mirror of
https://github.com/netbox-community/netbox.git
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636 lines
24 KiB
Python
636 lines
24 KiB
Python
from collections import OrderedDict
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from django_tables2 import RequestConfig
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from django.conf import settings
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from django.contrib import messages
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from django.contrib.contenttypes.models import ContentType
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from django.core.exceptions import ValidationError
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from django.core.urlresolvers import reverse
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from django.db import transaction, IntegrityError
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from django.db.models import ProtectedError
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from django.forms import CharField, ModelMultipleChoiceField, MultipleHiddenInput, TypedChoiceField
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from django.http import HttpResponse
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from django.shortcuts import get_object_or_404, redirect, render
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from django.template import TemplateSyntaxError
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from django.utils.html import escape
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from django.utils.http import is_safe_url
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from django.utils.safestring import mark_safe
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from django.views.generic import View
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from extras.forms import CustomFieldForm
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from extras.models import CustomField, CustomFieldValue, ExportTemplate, UserAction
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from .error_handlers import handle_protectederror
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from .forms import ConfirmationForm
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from .paginator import EnhancedPaginator
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class CustomFieldQueryset:
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"""
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Annotate custom fields on objects within a QuerySet.
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"""
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def __init__(self, queryset, custom_fields):
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self.queryset = queryset
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self.custom_fields = custom_fields
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def __iter__(self):
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for obj in self.queryset:
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values_dict = {cfv.field_id: cfv.value for cfv in obj.custom_field_values.all()}
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obj.custom_fields = OrderedDict([(field, values_dict.get(field.pk)) for field in self.custom_fields])
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yield obj
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class ObjectListView(View):
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"""
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List a series of objects.
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queryset: The queryset of objects to display
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filter: A django-filter FilterSet that is applied to the queryset
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filter_form: The form used to render filter options
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table: The django-tables2 Table used to render the objects list
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template_name: The name of the template
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"""
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queryset = None
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filter = None
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filter_form = None
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table = None
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template_name = None
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def get(self, request):
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model = self.queryset.model
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object_ct = ContentType.objects.get_for_model(model)
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if self.filter:
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self.queryset = self.filter(request.GET, self.queryset).qs
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# If this type of object has one or more custom fields, prefetch any relevant custom field values
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custom_fields = CustomField.objects.filter(obj_type=ContentType.objects.get_for_model(model))\
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.prefetch_related('choices')
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if custom_fields:
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self.queryset = self.queryset.prefetch_related('custom_field_values')
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# Check for export template rendering
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if request.GET.get('export'):
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et = get_object_or_404(ExportTemplate, content_type=object_ct, name=request.GET.get('export'))
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queryset = CustomFieldQueryset(self.queryset, custom_fields) if custom_fields else self.queryset
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try:
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response = et.to_response(context_dict={'queryset': queryset},
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filename='netbox_{}'.format(model._meta.verbose_name_plural))
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return response
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except TemplateSyntaxError:
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messages.error(request, u"There was an error rendering the selected export template ({})."
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.format(et.name))
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# Fall back to built-in CSV export
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elif 'export' in request.GET and hasattr(model, 'to_csv'):
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output = '\n'.join([obj.to_csv() for obj in self.queryset])
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response = HttpResponse(
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output,
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content_type='text/csv'
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)
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response['Content-Disposition'] = 'attachment; filename="netbox_{}.csv"'\
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.format(self.queryset.model._meta.verbose_name_plural)
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return response
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# Provide a hook to tweak the queryset based on the request immediately prior to rendering the object list
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self.queryset = self.alter_queryset(request)
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# Compile user model permissions for access from within the template
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perm_base_name = '{}.{{}}_{}'.format(model._meta.app_label, model._meta.model_name)
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permissions = {p: request.user.has_perm(perm_base_name.format(p)) for p in ['add', 'change', 'delete']}
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# Construct the table based on the user's permissions
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table = self.table(self.queryset)
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if 'pk' in table.base_columns and (permissions['change'] or permissions['delete']):
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table.base_columns['pk'].visible = True
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# Apply the request context
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paginate = {
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'klass': EnhancedPaginator,
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'per_page': request.GET.get('per_page', settings.PAGINATE_COUNT)
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}
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RequestConfig(request, paginate).configure(table)
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context = {
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'table': table,
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'permissions': permissions,
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'filter_form': self.filter_form(request.GET, label_suffix='') if self.filter_form else None,
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'export_templates': ExportTemplate.objects.filter(content_type=object_ct),
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}
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context.update(self.extra_context())
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return render(request, self.template_name, context)
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def alter_queryset(self, request):
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# .all() is necessary to avoid caching queries
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return self.queryset.all()
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def extra_context(self):
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return {}
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class ObjectEditView(View):
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"""
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Create or edit a single object.
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model: The model of the object being edited
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form_class: The form used to create or edit the object
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fields_initial: A set of fields that will be prepopulated in the form from the request parameters
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template_name: The name of the template
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default_return_url: The name of the URL used to display a list of this object type
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"""
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model = None
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form_class = None
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fields_initial = []
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template_name = 'utilities/obj_edit.html'
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default_return_url = 'home'
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def get_object(self, kwargs):
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# Look up object by slug or PK. Return None if neither was provided.
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if 'slug' in kwargs:
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return get_object_or_404(self.model, slug=kwargs['slug'])
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elif 'pk' in kwargs:
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return get_object_or_404(self.model, pk=kwargs['pk'])
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return self.model()
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def alter_obj(self, obj, request, url_args, url_kwargs):
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# Allow views to add extra info to an object before it is processed. For example, a parent object can be defined
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# given some parameter from the request URL.
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return obj
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def get_return_url(self, obj):
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# Determine where to redirect the user after updating an object (or aborting an update).
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if obj.pk and hasattr(obj, 'get_absolute_url'):
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return obj.get_absolute_url()
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return reverse(self.default_return_url)
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def get(self, request, *args, **kwargs):
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obj = self.get_object(kwargs)
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obj = self.alter_obj(obj, request, args, kwargs)
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initial_data = {k: request.GET[k] for k in self.fields_initial if k in request.GET}
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form = self.form_class(instance=obj, initial=initial_data)
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return render(request, self.template_name, {
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'obj': obj,
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'obj_type': self.model._meta.verbose_name,
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'form': form,
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'return_url': self.get_return_url(obj),
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})
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def post(self, request, *args, **kwargs):
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obj = self.get_object(kwargs)
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obj = self.alter_obj(obj, request, args, kwargs)
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form = self.form_class(request.POST, instance=obj)
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if form.is_valid():
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obj = form.save(commit=False)
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obj_created = not obj.pk
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obj.save()
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form.save_m2m()
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if isinstance(form, CustomFieldForm):
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form.save_custom_fields()
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msg = u'Created ' if obj_created else u'Modified '
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msg += self.model._meta.verbose_name
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if hasattr(obj, 'get_absolute_url'):
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msg = u'{} <a href="{}">{}</a>'.format(msg, obj.get_absolute_url(), escape(obj))
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else:
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msg = u'{} {}'.format(msg, escape(obj))
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messages.success(request, mark_safe(msg))
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if obj_created:
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UserAction.objects.log_create(request.user, obj, msg)
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else:
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UserAction.objects.log_edit(request.user, obj, msg)
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if '_addanother' in request.POST:
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return redirect(request.path)
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return redirect(self.get_return_url(obj))
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return render(request, self.template_name, {
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'obj': obj,
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'obj_type': self.model._meta.verbose_name,
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'form': form,
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'return_url': self.get_return_url(obj),
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})
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class ObjectDeleteView(View):
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"""
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Delete a single object.
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model: The model of the object being edited
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template_name: The name of the template
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default_return_url: Name of the URL to which the user is redirected after deleting the object
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"""
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model = None
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template_name = 'utilities/obj_delete.html'
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default_return_url = 'home'
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def get_object(self, kwargs):
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# Look up object by slug if one has been provided. Otherwise, use PK.
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if 'slug' in kwargs:
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return get_object_or_404(self.model, slug=kwargs['slug'])
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else:
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return get_object_or_404(self.model, pk=kwargs['pk'])
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def get_return_url(self, obj):
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if obj.pk and hasattr(obj, 'get_absolute_url'):
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return obj.get_absolute_url()
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return reverse(self.default_return_url)
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def get(self, request, **kwargs):
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obj = self.get_object(kwargs)
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initial_data = {
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'return_url': request.GET.get('return_url'),
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}
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form = ConfirmationForm(initial=initial_data)
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return render(request, self.template_name, {
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'obj': obj,
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'form': form,
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'obj_type': self.model._meta.verbose_name,
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'return_url': request.GET.get('return_url') or self.get_return_url(obj),
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})
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def post(self, request, **kwargs):
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obj = self.get_object(kwargs)
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form = ConfirmationForm(request.POST)
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if form.is_valid():
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try:
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obj.delete()
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except ProtectedError as e:
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handle_protectederror(obj, request, e)
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return redirect(obj.get_absolute_url())
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msg = u'Deleted {} {}'.format(self.model._meta.verbose_name, obj)
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messages.success(request, msg)
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UserAction.objects.log_delete(request.user, obj, msg)
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return_url = form.cleaned_data['return_url']
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if return_url and is_safe_url(url=return_url, host=request.get_host()):
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return redirect(return_url)
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else:
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return redirect(self.get_return_url(obj))
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return render(request, self.template_name, {
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'obj': obj,
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'form': form,
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'obj_type': self.model._meta.verbose_name,
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'return_url': request.GET.get('return_url') or self.get_return_url(obj),
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})
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class BulkAddView(View):
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"""
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Create new objects in bulk.
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form: Form class
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model: The model of the objects being created
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template_name: The name of the template
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default_return_url: Name of the URL to which the user is redirected after creating the objects
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"""
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form = None
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model = None
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template_name = None
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default_return_url = 'home'
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def get(self, request):
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form = self.form()
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return render(request, self.template_name, {
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'obj_type': self.model._meta.verbose_name,
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'form': form,
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'return_url': reverse(self.default_return_url),
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})
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def post(self, request):
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form = self.form(request.POST)
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if form.is_valid():
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# The first field will be used as the pattern
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field_names = list(form.fields.keys())
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pattern_field = field_names[0]
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pattern = form.cleaned_data[pattern_field]
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# All other fields will be copied as object attributes
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kwargs = {k: form.cleaned_data[k] for k in field_names[1:]}
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new_objs = []
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try:
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with transaction.atomic():
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for value in pattern:
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obj = self.model(**kwargs)
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setattr(obj, pattern_field, value)
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obj.full_clean()
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obj.save()
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new_objs.append(obj)
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except ValidationError as e:
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form.add_error(None, e)
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if not form.errors:
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msg = u"Added {} {}".format(len(new_objs), self.model._meta.verbose_name_plural)
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messages.success(request, msg)
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UserAction.objects.log_bulk_create(request.user, ContentType.objects.get_for_model(self.model), msg)
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if '_addanother' in request.POST:
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return redirect(request.path)
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return redirect(self.default_return_url)
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return render(request, self.template_name, {
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'form': form,
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'obj_type': self.model._meta.verbose_name,
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'return_url': reverse(self.default_return_url),
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})
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class BulkImportView(View):
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"""
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Import objects in bulk (CSV format).
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form: Form class
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table: The django-tables2 Table used to render the list of imported objects
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template_name: The name of the template
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default_return_url: The name of the URL to use for the cancel button
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"""
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form = None
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table = None
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template_name = None
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default_return_url = None
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def get(self, request):
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return render(request, self.template_name, {
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'form': self.form(),
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'return_url': self.default_return_url,
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})
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def post(self, request):
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form = self.form(request.POST)
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if form.is_valid():
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new_objs = []
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try:
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with transaction.atomic():
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for obj in form.cleaned_data['csv']:
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self.save_obj(obj)
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new_objs.append(obj)
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obj_table = self.table(new_objs)
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if new_objs:
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msg = u'Imported {} {}'.format(len(new_objs), new_objs[0]._meta.verbose_name_plural)
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messages.success(request, msg)
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UserAction.objects.log_import(request.user, ContentType.objects.get_for_model(new_objs[0]), msg)
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return render(request, "import_success.html", {
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'table': obj_table,
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})
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except IntegrityError as e:
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form.add_error('csv', "Record {}: {}".format(len(new_objs) + 1, e.__cause__))
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return render(request, self.template_name, {
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'form': form,
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'return_url': self.default_return_url,
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})
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def save_obj(self, obj):
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obj.save()
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class BulkEditView(View):
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"""
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Edit objects in bulk.
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cls: The model of the objects being edited
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parent_cls: The model of the parent object (if any)
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filter: FilterSet to apply when deleting by QuerySet
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form: The form class used to edit objects in bulk
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template_name: The name of the template
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default_return_url: Name of the URL to which the user is redirected after editing the objects (can be overriden by
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POSTing return_url)
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"""
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cls = None
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parent_cls = None
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filter = None
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form = None
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template_name = None
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default_return_url = 'home'
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def get(self):
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return redirect(self.default_return_url)
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def post(self, request, **kwargs):
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# Attempt to derive parent object if a parent class has been given
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if self.parent_cls:
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parent_obj = get_object_or_404(self.parent_cls, **kwargs)
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else:
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parent_obj = None
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# Determine URL to redirect users upon modification of objects
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posted_return_url = request.POST.get('return_url')
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if posted_return_url and is_safe_url(url=posted_return_url, host=request.get_host()):
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return_url = posted_return_url
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elif parent_obj:
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return_url = parent_obj.get_absolute_url()
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else:
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return_url = reverse(self.default_return_url)
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# Are we editing *all* objects in the queryset or just a selected subset?
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if request.POST.get('_all') and self.filter is not None:
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pk_list = [obj.pk for obj in self.filter(request.GET, self.cls.objects.only('pk')).qs]
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else:
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pk_list = [int(pk) for pk in request.POST.getlist('pk')]
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if '_apply' in request.POST:
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form = self.form(self.cls, request.POST)
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if form.is_valid():
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custom_fields = form.custom_fields if hasattr(form, 'custom_fields') else []
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standard_fields = [field for field in form.fields if field not in custom_fields and field != 'pk']
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# Update standard fields. If a field is listed in _nullify, delete its value.
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nullified_fields = request.POST.getlist('_nullify')
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fields_to_update = {}
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for field in standard_fields:
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if field in form.nullable_fields and field in nullified_fields:
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if isinstance(form.fields[field], CharField):
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fields_to_update[field] = ''
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else:
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fields_to_update[field] = None
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elif form.cleaned_data[field]:
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fields_to_update[field] = form.cleaned_data[field]
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updated_count = self.cls.objects.filter(pk__in=pk_list).update(**fields_to_update)
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# Update custom fields for objects
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if custom_fields:
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objs_updated = self.update_custom_fields(pk_list, form, custom_fields, nullified_fields)
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if objs_updated and not updated_count:
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updated_count = objs_updated
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if updated_count:
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msg = u'Updated {} {}'.format(updated_count, self.cls._meta.verbose_name_plural)
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messages.success(self.request, msg)
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UserAction.objects.log_bulk_edit(request.user, ContentType.objects.get_for_model(self.cls), msg)
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return redirect(return_url)
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else:
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initial_data = request.POST.copy()
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initial_data['pk'] = pk_list
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form = self.form(self.cls, initial=initial_data)
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selected_objects = self.cls.objects.filter(pk__in=pk_list)
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if not selected_objects:
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messages.warning(request, u"No {} were selected.".format(self.cls._meta.verbose_name_plural))
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return redirect(return_url)
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return render(request, self.template_name, {
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'form': form,
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'selected_objects': selected_objects,
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'return_url': return_url,
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})
|
|
|
|
def update_custom_fields(self, pk_list, form, fields, nullified_fields):
|
|
obj_type = ContentType.objects.get_for_model(self.cls)
|
|
objs_updated = False
|
|
|
|
for name in fields:
|
|
|
|
field = form.fields[name].model
|
|
|
|
# Setting the field to null
|
|
if name in form.nullable_fields and name in nullified_fields:
|
|
|
|
# Delete all CustomFieldValues for instances of this field belonging to the selected objects.
|
|
CustomFieldValue.objects.filter(field=field, obj_type=obj_type, obj_id__in=pk_list).delete()
|
|
objs_updated = True
|
|
|
|
# Updating the value of the field
|
|
elif form.cleaned_data[name] not in [None, u'']:
|
|
|
|
# Check for zero value (bulk editing)
|
|
if isinstance(form.fields[name], TypedChoiceField) and form.cleaned_data[name] == 0:
|
|
serialized_value = field.serialize_value(None)
|
|
else:
|
|
serialized_value = field.serialize_value(form.cleaned_data[name])
|
|
|
|
# Gather any pre-existing CustomFieldValues for the objects being edited.
|
|
existing_cfvs = CustomFieldValue.objects.filter(field=field, obj_type=obj_type, obj_id__in=pk_list)
|
|
|
|
# Determine which objects have an existing CFV to update and which need a new CFV created.
|
|
update_list = [cfv['obj_id'] for cfv in existing_cfvs.values()]
|
|
create_list = list(set(pk_list) - set(update_list))
|
|
|
|
# Creating/updating CFVs
|
|
if serialized_value:
|
|
existing_cfvs.update(serialized_value=serialized_value)
|
|
CustomFieldValue.objects.bulk_create([
|
|
CustomFieldValue(field=field, obj_type=obj_type, obj_id=pk, serialized_value=serialized_value)
|
|
for pk in create_list
|
|
])
|
|
|
|
# Deleting CFVs
|
|
else:
|
|
existing_cfvs.delete()
|
|
|
|
objs_updated = True
|
|
|
|
return len(pk_list) if objs_updated else 0
|
|
|
|
|
|
class BulkDeleteView(View):
|
|
"""
|
|
Delete objects in bulk.
|
|
|
|
cls: The model of the objects being deleted
|
|
parent_cls: The model of the parent object (if any)
|
|
filter: FilterSet to apply when deleting by QuerySet
|
|
form: The form class used to delete objects in bulk
|
|
template_name: The name of the template
|
|
default_return_url: Name of the URL to which the user is redirected after deleting the objects (can be overriden by
|
|
POSTing return_url)
|
|
"""
|
|
cls = None
|
|
parent_cls = None
|
|
filter = None
|
|
form = None
|
|
template_name = 'utilities/confirm_bulk_delete.html'
|
|
default_return_url = 'home'
|
|
|
|
def post(self, request, **kwargs):
|
|
|
|
# Attempt to derive parent object if a parent class has been given
|
|
if self.parent_cls:
|
|
parent_obj = get_object_or_404(self.parent_cls, **kwargs)
|
|
else:
|
|
parent_obj = None
|
|
|
|
# Determine URL to redirect users upon deletion of objects
|
|
posted_return_url = request.POST.get('return_url')
|
|
if posted_return_url and is_safe_url(url=posted_return_url, host=request.get_host()):
|
|
return_url = posted_return_url
|
|
elif parent_obj:
|
|
return_url = parent_obj.get_absolute_url()
|
|
else:
|
|
return_url = reverse(self.default_return_url)
|
|
|
|
# Are we deleting *all* objects in the queryset or just a selected subset?
|
|
if request.POST.get('_all') and self.filter is not None:
|
|
pk_list = [obj.pk for obj in self.filter(request.GET, self.cls.objects.only('pk')).qs]
|
|
else:
|
|
pk_list = [int(pk) for pk in request.POST.getlist('pk')]
|
|
|
|
form_cls = self.get_form()
|
|
|
|
if '_confirm' in request.POST:
|
|
form = form_cls(request.POST)
|
|
if form.is_valid():
|
|
|
|
# Delete objects
|
|
queryset = self.cls.objects.filter(pk__in=pk_list)
|
|
try:
|
|
deleted_count = queryset.delete()[1][self.cls._meta.label]
|
|
except ProtectedError as e:
|
|
handle_protectederror(list(queryset), request, e)
|
|
return redirect(return_url)
|
|
|
|
msg = u'Deleted {} {}'.format(deleted_count, self.cls._meta.verbose_name_plural)
|
|
messages.success(request, msg)
|
|
UserAction.objects.log_bulk_delete(request.user, ContentType.objects.get_for_model(self.cls), msg)
|
|
return redirect(return_url)
|
|
|
|
else:
|
|
form = form_cls(initial={'pk': pk_list, 'return_url': return_url})
|
|
|
|
selected_objects = self.cls.objects.filter(pk__in=pk_list)
|
|
if not selected_objects:
|
|
messages.warning(request, u"No {} were selected for deletion.".format(self.cls._meta.verbose_name_plural))
|
|
return redirect(return_url)
|
|
|
|
return render(request, self.template_name, {
|
|
'form': form,
|
|
'parent_obj': parent_obj,
|
|
'obj_type_plural': self.cls._meta.verbose_name_plural,
|
|
'selected_objects': selected_objects,
|
|
'return_url': return_url,
|
|
})
|
|
|
|
def get_form(self):
|
|
"""
|
|
Provide a standard bulk delete form if none has been specified for the view
|
|
"""
|
|
|
|
class BulkDeleteForm(ConfirmationForm):
|
|
pk = ModelMultipleChoiceField(queryset=self.cls.objects.all(), widget=MultipleHiddenInput)
|
|
|
|
if self.form:
|
|
return self.form
|
|
return BulkDeleteForm
|