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92 lines
2.9 KiB
Python

from django import forms
from django.contrib.contenttypes.models import ContentType
from django.utils.translation import gettext as _
from extras.choices import CustomFieldVisibilityChoices
from extras.models import *
from utilities.forms.fields import DynamicModelMultipleChoiceField
__all__ = (
'CustomFieldsMixin',
'SavedFiltersMixin',
'TagsMixin',
)
class CustomFieldsMixin:
"""
Extend a Form to include custom field support.
Attributes:
model: The model class
"""
model = None
def __init__(self, *args, **kwargs):
self.custom_fields = {}
self.custom_field_groups = {}
super().__init__(*args, **kwargs)
self._append_customfield_fields()
def _get_content_type(self):
"""
Return the ContentType of the form's model.
"""
if not getattr(self, 'model', None):
raise NotImplementedError(f"{self.__class__.__name__} must specify a model class.")
return ContentType.objects.get_for_model(self.model)
def _get_custom_fields(self, content_type):
return CustomField.objects.filter(content_types=content_type).exclude(
ui_visibility=CustomFieldVisibilityChoices.VISIBILITY_HIDDEN
)
def _get_form_field(self, customfield):
return customfield.to_form_field()
def _append_customfield_fields(self):
"""
Append form fields for all CustomFields assigned to this object type.
"""
for customfield in self._get_custom_fields(self._get_content_type()):
if customfield.ui_visibility == CustomFieldVisibilityChoices.VISIBILITY_HIDDEN:
continue
field_name = f'cf_{customfield.name}'
self.fields[field_name] = self._get_form_field(customfield)
# Annotate the field in the list of CustomField form fields
self.custom_fields[field_name] = customfield
if customfield.group_name not in self.custom_field_groups:
self.custom_field_groups[customfield.group_name] = []
self.custom_field_groups[customfield.group_name].append(field_name)
class SavedFiltersMixin(forms.Form):
filter_id = DynamicModelMultipleChoiceField(
queryset=SavedFilter.objects.all(),
required=False,
label=_('Saved Filter'),
query_params={
'usable': True,
}
)
class TagsMixin(forms.Form):
tags = DynamicModelMultipleChoiceField(
queryset=Tag.objects.all(),
required=False,
label=_('Tags'),
)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Limit tags to those applicable to the object type
content_type = ContentType.objects.get_for_model(self._meta.model)
if content_type and hasattr(self.fields['tags'].widget, 'add_query_param'):
self.fields['tags'].widget.add_query_param('for_object_type_id', content_type.pk)