127 lines
3.8 KiB
Python
127 lines
3.8 KiB
Python
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# -*- coding: utf-8 -*-
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from django.db import models
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from django.contrib.auth.decorators import login_required
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from django.utils.decorators import method_decorator
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from django.conf.urls import url
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from django.core.urlresolvers import reverse
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from django.utils.functional import cached_property
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from django.utils.translation import ugettext as _
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from wagtail.contrib.modeladmin.helpers import AdminURLHelper, ButtonHelper
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from wagtail.contrib.modeladmin.options import ModelAdmin
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from wagtail.contrib.modeladmin.views import IndexView
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from feedler.models import Entry
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class ExportButtonHelper(ButtonHelper):
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"""
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This helper constructs all the necessary attributes to create a button.
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There is a lot of boilerplate just for the classnames to be right :(
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"""
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export_button_classnames = ['icon', 'icon-download']
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def export_button(self, classnames_add=None, classnames_exclude=None):
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if classnames_add is None:
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classnames_add = []
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if classnames_exclude is None:
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classnames_exclude = []
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classnames = self.export_button_classnames + classnames_add
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cn = self.finalise_classname(classnames, classnames_exclude)
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text = _('Export {}'.format(self.verbose_name_plural.title()))
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return {
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'url': self.url_helper.get_action_url('export', query_params=self.request.GET),
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'label': text,
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'classname': cn,
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'title': text,
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}
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class ExportAdminURLHelper(AdminURLHelper):
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"""
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This helper constructs the different urls.
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This is mostly just to overwrite the default behaviour
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which consider any action other than 'create', 'choose_parent' and 'index'
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as `object specific` and will try to add the object PK to the url
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which is not what we want for the `export` option.
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In addition, it appends the filters to the action.
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"""
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non_object_specific_actions = ('create', 'choose_parent', 'index', 'export')
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def get_action_url(self, action, *args, **kwargs):
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query_params = kwargs.pop('query_params', None)
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url_name = self.get_action_url_name(action)
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if action in self.non_object_specific_actions:
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url = reverse(url_name)
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else:
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url = reverse(url_name, args=args, kwargs=kwargs)
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if query_params:
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url += '?{params}'.format(params=query_params.urlencode())
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return url
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def get_action_url_pattern(self, action):
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if action in self.non_object_specific_actions:
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return self._get_action_url_pattern(action)
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return self._get_object_specific_action_url_pattern(action)
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class ExportView(IndexView):
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"""
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A Class Based View which will generate
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"""
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def export_csv(self):
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data = self.queryset.all()
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response = ...
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return response
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@method_decorator(login_required)
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def dispatch(self, request, *args, **kwargs):
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super().dispatch(request, *args, **kwargs)
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return self.export_csv()
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class ExportModelAdminMixin(object):
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"""
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A mixin to add to your model admin which hooks the different helpers, the view
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and register the new urls.
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"""
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button_helper_class = ExportButtonHelper
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url_helper_class = ExportAdminURLHelper
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export_view_class = ExportView
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def get_admin_urls_for_registration(self):
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urls = super().get_admin_urls_for_registration()
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urls += (
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url(
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self.url_helper.get_action_url_pattern('export'),
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self.export_view,
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name=self.url_helper.get_action_url_name('export')
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),
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)
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return urls
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def export_view(self, request):
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kwargs = {'model_admin': self}
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view_class = self.export_view_class
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return view_class.as_view(**kwargs)(request)
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class MenuModelAdmin(ExportModelAdminMixin, ModelAdmin):
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model = Entry
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