django-orchestra-test/orchestra/admin/options.py

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from django import forms
from django.contrib import admin
from django.forms.models import BaseInlineFormSet
from .utils import set_url_query
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class ExtendedModelAdmin(admin.ModelAdmin):
add_fields = ()
add_fieldsets = ()
add_form = None
change_readonly_fields = ()
def get_readonly_fields(self, request, obj=None):
fields = super(ExtendedModelAdmin, self).get_readonly_fields(request, obj=obj)
if obj:
return fields + self.change_readonly_fields
return fields
def get_fieldsets(self, request, obj=None):
if not obj:
if self.add_fieldsets:
return self.add_fieldsets
elif self.add_fields:
return [(None, {'fields': self.add_fields})]
return super(ExtendedModelAdmin, self).get_fieldsets(request, obj=obj)
def get_inline_instances(self, request, obj=None):
""" add_inlines and inline.parent_object """
self.inlines = getattr(self, 'add_inlines', self.inlines)
if obj:
self.inlines = type(self).inlines
inlines = super(ExtendedModelAdmin, self).get_inline_instances(request, obj=obj)
for inline in inlines:
inline.parent_object = obj
return inlines
def get_form(self, request, obj=None, **kwargs):
""" Use special form during user creation """
defaults = {}
if obj is None and self.add_form:
defaults['form'] = self.add_form
defaults.update(kwargs)
return super(ExtendedModelAdmin, self).get_form(request, obj, **defaults)
class ChangeListDefaultFilter(object):
"""
Enables support for default filtering on admin change list pages
Your model admin class should define an default_changelist_filters attribute
default_changelist_filters = (('my_nodes', 'True'),)
"""
default_changelist_filters = ()
def changelist_view(self, request, extra_context=None):
""" Default filter as 'my_nodes=True' """
defaults = []
for key, value in self.default_changelist_filters:
set_url_query(request, key, value)
defaults.append(key)
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# hack response cl context in order to hook default filter awaearness into search_form.html template
response = super(ChangeListDefaultFilter, self).changelist_view(request, extra_context=extra_context)
if hasattr(response, 'context_data') and 'cl' in response.context_data:
response.context_data['cl'].default_changelist_filters = defaults
return response
class AtLeastOneRequiredInlineFormSet(BaseInlineFormSet):
def clean(self):
"""Check that at least one service has been entered."""
super(AtLeastOneRequiredInlineFormSet, self).clean()
if any(self.errors):
return
if not any(cleaned_data and not cleaned_data.get('DELETE', False)
for cleaned_data in self.cleaned_data):
raise forms.ValidationError('At least one item required.')