public-health-ch/feedler/admin.py

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# -*- coding: utf-8 -*-
from django.db import models
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator
from django.conf.urls import url
from django.core.urlresolvers import reverse
from django.utils.functional import cached_property
from django.utils.translation import ugettext as _
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from django.shortcuts import redirect
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from wagtail.contrib.modeladmin.helpers import AdminURLHelper, ButtonHelper
from wagtail.contrib.modeladmin.options import ModelAdmin
from wagtail.contrib.modeladmin.views import IndexView
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from wagtail.wagtailadmin import messages
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from feedler.models import Entry
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from feedler.refresh import refresh_streams
from feedler.models.admin import FeedlySettings
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class RefreshButtonHelper(ButtonHelper):
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"""
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This helper constructs a refresh button
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"""
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button_classnames = ['icon', 'icon-download']
def refresh_button(self, classnames_add=None, classnames_exclude=None):
if classnames_add is None: classnames_add = []
if classnames_exclude is None: classnames_exclude = []
classnames = self.button_classnames + classnames_add
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cn = self.finalise_classname(classnames, classnames_exclude)
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text = _('Sync {}'.format(self.verbose_name_plural.title()))
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return {
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'url': self.url_helper.get_action_url('refresh', query_params=self.request.GET),
'label': text, 'classname': cn, 'title': text,
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}
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class RefreshAdminURLHelper(AdminURLHelper):
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"""
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This helper constructs the different urls, to overwrite the default behaviour
and append the filters to the action.
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"""
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non_object_specific_actions = ('create', 'choose_parent', 'index', 'refresh')
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def get_action_url(self, action, *args, **kwargs):
query_params = kwargs.pop('query_params', None)
url_name = self.get_action_url_name(action)
if action in self.non_object_specific_actions:
url = reverse(url_name)
else:
url = reverse(url_name, args=args, kwargs=kwargs)
if query_params:
url += '?{params}'.format(params=query_params.urlencode())
return url
def get_action_url_pattern(self, action):
if action in self.non_object_specific_actions:
return self._get_action_url_pattern(action)
return self._get_object_specific_action_url_pattern(action)
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class RefreshView(IndexView):
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"""
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A Class Based View which will handle the button click
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"""
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# def export_csv(self):
# data = self.queryset.all()
# response = ...
# return response
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@method_decorator(login_required)
def dispatch(self, request, *args, **kwargs):
super().dispatch(request, *args, **kwargs)
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if not refresh_streams(FeedlySettings.for_site(request.site)):
messages.error(
request, _('Sorry, could not refresh streams. Please contact your administrator.'))
return redirect('/admin/feedler/entry/')
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class EntryModelAdminMixin(object):
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"""
A mixin to add to your model admin which hooks the different helpers, the view
and register the new urls.
"""
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button_helper_class = RefreshButtonHelper
url_helper_class = RefreshAdminURLHelper
view_class = RefreshView
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def get_admin_urls_for_registration(self):
urls = super().get_admin_urls_for_registration()
urls += (
url(
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self.url_helper.get_action_url_pattern('refresh'),
self.refresh_view,
name=self.url_helper.get_action_url_name('refresh')
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),
)
return urls
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def refresh_view(self, request):
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kwargs = {'model_admin': self}
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view_class = self.view_class
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return view_class.as_view(**kwargs)(request)