132 lines
5.2 KiB
Python
132 lines
5.2 KiB
Python
from django import forms
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from django.conf.urls import patterns, url
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from django.contrib import admin
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from django.contrib.admin.utils import unquote
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from django.forms.models import BaseInlineFormSet
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from .utils import set_url_query, action_to_view
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class ChangeListDefaultFilter(object):
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"""
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Enables support for default filtering on admin change list pages
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Your model admin class should define an default_changelist_filters attribute
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default_changelist_filters = (('my_nodes', 'True'),)
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"""
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default_changelist_filters = ()
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def changelist_view(self, request, extra_context=None):
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""" Default filter as 'my_nodes=True' """
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defaults = []
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for key, value in self.default_changelist_filters:
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set_url_query(request, key, value)
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defaults.append(key)
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# hack response cl context in order to hook default filter awaearness
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# into search_form.html template
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response = super(ChangeListDefaultFilter, self).changelist_view(request,
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extra_context=extra_context)
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if hasattr(response, 'context_data') and 'cl' in response.context_data:
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response.context_data['cl'].default_changelist_filters = defaults
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return response
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class AtLeastOneRequiredInlineFormSet(BaseInlineFormSet):
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def clean(self):
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"""Check that at least one service has been entered."""
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super(AtLeastOneRequiredInlineFormSet, self).clean()
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if any(self.errors):
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return
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if not any(cleaned_data and not cleaned_data.get('DELETE', False)
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for cleaned_data in self.cleaned_data):
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raise forms.ValidationError('At least one item required.')
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class ChangeViewActionsMixin(object):
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""" Makes actions visible on the admin change view page. """
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change_view_actions = ()
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change_form_template = 'orchestra/admin/change_form.html'
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def get_urls(self):
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"""Returns the additional urls for the change view links"""
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urls = super(ChangeViewActionsMixin, self).get_urls()
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admin_site = self.admin_site
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opts = self.model._meta
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new_urls = patterns('')
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for action in self.get_change_view_actions():
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new_urls += patterns('',
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url('^(\d+)/%s/$' % action.url_name,
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admin_site.admin_view(action),
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name='%s_%s_%s' % (opts.app_label,
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opts.model_name,
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action.url_name)))
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return new_urls + urls
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def get_change_view_actions(self, obj=None):
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""" allow customization on modelamdin """
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views = []
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for action in self.change_view_actions:
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if isinstance(action, basestring):
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action = getattr(self, action)
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view = action_to_view(action, self)
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view.url_name = getattr(action, 'url_name', action.__name__)
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view.verbose_name = getattr(action, 'verbose_name',
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view.url_name.capitalize().replace('_', ' '))
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view.css_class = getattr(action, 'css_class', 'historylink')
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view.description = getattr(action, 'description', '')
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views.append(view)
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return views
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def change_view(self, request, object_id, **kwargs):
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if not 'extra_context' in kwargs:
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kwargs['extra_context'] = {}
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obj = self.get_object(request, unquote(object_id))
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kwargs['extra_context']['object_tools_items'] = [
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action.__dict__ for action in self.get_change_view_actions(obj=obj)
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]
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return super(ChangeViewActionsMixin, self).change_view(request, object_id, **kwargs)
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class ChangeAddFieldsMixin(object):
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""" Enables to specify different set of fields for change and add views """
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add_fields = ()
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add_fieldsets = ()
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add_form = None
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change_readonly_fields = ()
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def get_readonly_fields(self, request, obj=None):
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fields = super(ChangeAddFieldsMixin, self).get_readonly_fields(request, obj=obj)
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if obj:
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return fields + self.change_readonly_fields
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return fields
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def get_fieldsets(self, request, obj=None):
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if not obj:
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if self.add_fieldsets:
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return self.add_fieldsets
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elif self.add_fields:
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return [(None, {'fields': self.add_fields})]
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return super(ChangeAddFieldsMixin, self).get_fieldsets(request, obj=obj)
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def get_inline_instances(self, request, obj=None):
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""" add_inlines and inline.parent_object """
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self.inlines = getattr(self, 'add_inlines', self.inlines)
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if obj:
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self.inlines = type(self).inlines
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inlines = super(ChangeAddFieldsMixin, self).get_inline_instances(request, obj=obj)
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for inline in inlines:
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inline.parent_object = obj
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return inlines
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def get_form(self, request, obj=None, **kwargs):
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""" Use special form during user creation """
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defaults = {}
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if obj is None and self.add_form:
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defaults['form'] = self.add_form
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defaults.update(kwargs)
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return super(ChangeAddFieldsMixin, self).get_form(request, obj, **defaults)
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class ExtendedModelAdmin(ChangeViewActionsMixin, ChangeAddFieldsMixin, admin.ModelAdmin):
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pass
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