import copy
import json
import operator
import re
from collections import OrderedDict
from functools import partial, reduce, update_wrapper
from urllib.parse import quote as urlquote
from django import forms
from django.conf import settings
from django.contrib import messages
from django.contrib.admin import helpers, widgets
from django.contrib.admin.checks import (
BaseModelAdminChecks, InlineModelAdminChecks, ModelAdminChecks,
)
from django.contrib.admin.exceptions import DisallowedModelAdminToField
from django.contrib.admin.templatetags.admin_urls import add_preserved_filters
from django.contrib.admin.utils import (
NestedObjects, construct_change_message, flatten_fieldsets,
get_deleted_objects, lookup_needs_distinct, model_format_dict,
model_ngettext, quote, unquote,
)
from django.contrib.admin.views.autocomplete import AutocompleteJsonView
from django.contrib.admin.widgets import (
AutocompleteSelect, AutocompleteSelectMultiple,
)
from django.contrib.auth import get_permission_codename
from django.core.exceptions import (
FieldDoesNotExist, FieldError, PermissionDenied, ValidationError,
)
from django.core.paginator import Paginator
from django.db import models, router, transaction
from django.db.models.constants import LOOKUP_SEP
from django.db.models.fields import BLANK_CHOICE_DASH
from django.forms.formsets import DELETION_FIELD_NAME, all_valid
from django.forms.models import (
BaseInlineFormSet, inlineformset_factory, modelform_defines_fields,
modelform_factory, modelformset_factory,
)
from django.forms.widgets import CheckboxSelectMultiple, SelectMultiple
from django.http import HttpResponseRedirect
from django.http.response import HttpResponseBase
from django.template.response import SimpleTemplateResponse, TemplateResponse
from django.urls import reverse
from django.utils.decorators import method_decorator
from django.utils.html import format_html
from django.utils.http import urlencode
from django.utils.inspect import get_func_args
from django.utils.safestring import mark_safe
from django.utils.text import capfirst, format_lazy, get_text_list
from django.utils.translation import gettext as _, ngettext
from django.views.decorators.csrf import csrf_protect
from django.views.generic import RedirectView
IS_POPUP_VAR = '_popup'
TO_FIELD_VAR = '_to_field'
HORIZONTAL, VERTICAL = 1, 2
def get_content_type_for_model(obj):
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level.
from django.contrib.contenttypes.models import ContentType
return ContentType.objects.get_for_model(obj, for_concrete_model=False)
def get_ul_class(radio_style):
return 'radiolist' if radio_style == VERTICAL else 'radiolist inline'
class IncorrectLookupParameters(Exception):
pass
# Defaults for formfield_overrides. ModelAdmin subclasses can change this
# by adding to ModelAdmin.formfield_overrides.
FORMFIELD_FOR_DBFIELD_DEFAULTS = {
models.DateTimeField: {
'form_class': forms.SplitDateTimeField,
'widget': widgets.AdminSplitDateTime
},
models.DateField: {'widget': widgets.AdminDateWidget},
models.TimeField: {'widget': widgets.AdminTimeWidget},
models.TextField: {'widget': widgets.AdminTextareaWidget},
models.URLField: {'widget': widgets.AdminURLFieldWidget},
models.IntegerField: {'widget': widgets.AdminIntegerFieldWidget},
models.BigIntegerField: {'widget': widgets.AdminBigIntegerFieldWidget},
models.CharField: {'widget': widgets.AdminTextInputWidget},
models.ImageField: {'widget': widgets.AdminFileWidget},
models.FileField: {'widget': widgets.AdminFileWidget},
models.EmailField: {'widget': widgets.AdminEmailInputWidget},
}
csrf_protect_m = method_decorator(csrf_protect)
class BaseModelAdmin(metaclass=forms.MediaDefiningClass):
"""Functionality common to both ModelAdmin and InlineAdmin."""
autocomplete_fields = ()
raw_id_fields = ()
fields = None
exclude = None
fieldsets = None
form = forms.ModelForm
filter_vertical = ()
filter_horizontal = ()
radio_fields = {}
prepopulated_fields = {}
formfield_overrides = {}
readonly_fields = ()
ordering = None
sortable_by = None
view_on_site = True
show_full_result_count = True
checks_class = BaseModelAdminChecks
def check(self, **kwargs):
return self.checks_class().check(self, **kwargs)
def __init__(self):
# Merge FORMFIELD_FOR_DBFIELD_DEFAULTS with the formfield_overrides
# rather than simply overwriting.
overrides = copy.deepcopy(FORMFIELD_FOR_DBFIELD_DEFAULTS)
for k, v in self.formfield_overrides.items():
overrides.setdefault(k, {}).update(v)
self.formfield_overrides = overrides
def formfield_for_dbfield(self, db_field, request, **kwargs):
"""
Hook for specifying the form Field instance for a given database Field
instance.
If kwargs are given, they're passed to the form Field's constructor.
"""
# If the field specifies choices, we don't need to look for special
# admin widgets - we just need to use a select widget of some kind.
if db_field.choices:
return self.formfield_for_choice_field(db_field, request, **kwargs)
# ForeignKey or ManyToManyFields
if isinstance(db_field, (models.ForeignKey, models.ManyToManyField)):
# Combine the field kwargs with any options for formfield_overrides.
# Make sure the passed in **kwargs override anything in
# formfield_overrides because **kwargs is more specific, and should
# always win.
if db_field.__class__ in self.formfield_overrides:
kwargs = {**self.formfield_overrides[db_field.__class__], **kwargs}
# Get the correct formfield.
if isinstance(db_field, models.ForeignKey):
formfield = self.formfield_for_foreignkey(db_field, request, **kwargs)
elif isinstance(db_field, models.ManyToManyField):
formfield = self.formfield_for_manytomany(db_field, request, **kwargs)
# For non-raw_id fields, wrap the widget with a wrapper that adds
# extra HTML -- the "add other" interface -- to the end of the
# rendered output. formfield can be None if it came from a
# OneToOneField with parent_link=True or a M2M intermediary.
if formfield and db_field.name not in self.raw_id_fields:
related_modeladmin = self.admin_site._registry.get(db_field.remote_field.model)
wrapper_kwargs = {}
if related_modeladmin:
wrapper_kwargs.update(
can_add_related=related_modeladmin.has_add_permission(request),
can_change_related=related_modeladmin.has_change_permission(request),
can_delete_related=related_modeladmin.has_delete_permission(request),
can_view_related=related_modeladmin.has_view_permission(request),
)
formfield.widget = widgets.RelatedFieldWidgetWrapper(
formfield.widget, db_field.remote_field, self.admin_site, **wrapper_kwargs
)
return formfield
# If we've got overrides for the formfield defined, use 'em. **kwargs
# passed to formfield_for_dbfield override the defaults.
for klass in db_field.__class__.mro():
if klass in self.formfield_overrides:
kwargs = {**copy.deepcopy(self.formfield_overrides[klass]), **kwargs}
return db_field.formfield(**kwargs)
# For any other type of field, just call its formfield() method.
return db_field.formfield(**kwargs)
def formfield_for_choice_field(self, db_field, request, **kwargs):
"""
Get a
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