app/soc/views/helper/responses.py
author Todd Larsen <tlarsen@google.com>
Sat, 22 Nov 2008 09:22:44 +0000
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Fix for 404 occuring when signing out during the creation of, for example, a new Document. This patch makes sure that the request.path is not altered when requesting the create page (alteration of which caused the 404). This also results in the seeds now being remembered when being forced to log in. The editPost method now correctly switches to the edit path after a successful edit. Patch by: Lennard de Rijk
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#!/usr/bin/python2.5
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#
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# Copyright 2008 the Melange authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#   http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Helpers used to render response.
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"""
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__authors__ = [
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  '"Todd Larsen" <tlarsen@google.com>',
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  '"Pawel Solyga" <pawel.solyga@gmail.com>',
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  ]
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from google.appengine.api import users
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from django import http
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from django.template import loader
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from soc.logic import accounts
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from soc.logic import system
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from soc.logic.models import site
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from soc.views import helper
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from soc.views.sitemap import sidebar
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import soc.logic
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import soc.logic.models.user
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import soc.views.helper.requests
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def respond(request, template, context=None, response_args=None):
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  """Helper to render a response, passing standard stuff to the response.
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  Args:
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    request: the Django HTTP request object
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    template: the template (or search list of templates) to render
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    context: the context supplied to the template (implements dict)
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    response_args: keyword arguments passed to http.HttpResponse()
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      (response_args['content'] is created with
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      render_to_string(template, dictionary=context) if it is not present)
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  Returns:
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    django.shortcuts.render_to_response(template, context) results
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  Raises:
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    Any exceptions that django.template.loader.render_to_string() or
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    django.http.HttpResponse() might raise.
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  """
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  if not context:
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    context = getUniversalContext(request)
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  if response_args is None:
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    response_args = {}
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  response_args['content'] = response_args.get(
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      'content', loader.render_to_string(template, dictionary=context))
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  return http.HttpResponse(**response_args)
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def getUniversalContext(request):
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  """Constructs a template context dict will many common variables defined.
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  Args:
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    request: the Django HTTP request object
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  Returns:
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    a new context dict containing:
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    {
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      'request': the Django HTTP request object passed in by the caller
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      'account': the logged-in Google Account if there is one
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      'user': the User entity corresponding to the Google Account in
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        context['account']
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      'is_admin': True if users.is_current_user_admin() is True
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      'is_debug': True if system.isDebug() is True
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      'sign_in': a Google Account login URL
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      'sign_out': a Google Account logout URL
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      'sidebar_menu_html': an HTML string that renders the sidebar menu
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    }
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  """
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  account = users.get_current_user()
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  context = {}
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  context['request'] = request
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  if account:
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    context['account'] = account
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    context['user'] = soc.logic.models.user.logic.getForFields(
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        {'account': account}, unique=True)
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    context['is_admin'] = accounts.isDeveloper(account=account)
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  context['is_debug'] = system.isDebug()
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  context['sign_in'] = users.create_login_url(request.path)
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  context['sign_out'] = users.create_logout_url(request.path)
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  context['sidebar_menu_items'] = sidebar.SIDEBAR
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  settings = site.logic.getFromFields(
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      scope_path=site.logic.DEF_SITE_SCOPE_PATH,
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      link_id=site.logic.DEF_SITE_LINK_ID)
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  if settings:
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    context['ga_tracking_num'] = settings.ga_tracking_num
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  return context
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def redirectToChangedSuffix(
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    request, old_suffix, new_suffix=None, params=None):
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  """Changes suffix of URL path and returns an HTTP redirect response.
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  Args:
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    request: the Django HTTP request object; redirect path is derived from
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      request.path
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    old_suffix, new_suffix, params:  see helper.requests.replaceSuffix()
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  Returns:
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    a Django HTTP redirect response pointing to the altered path.
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  """
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  path = helper.requests.replaceSuffix(request.path, old_suffix, new_suffix,
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                                       params=params)
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  return http.HttpResponseRedirect(path)