app/soc/views/docs/edit.py
author Sverre Rabbelier <srabbelier@gmail.com>
Sun, 02 Nov 2008 22:57:46 +0000
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parent 408 7cd6bdfbf95c
child 445 31927f21970d
permissions -rw-r--r--
Refactor out the abundance of dictionary (un)packing Instead, keep the dict packed once packed, and only unpack it when needed.
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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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"""Views for editing and examining Documents.
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"""
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__authors__ = [
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  '"Todd Larsen" <tlarsen@google.com>',
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  ]
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from google.appengine.api import users
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from django import forms
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from django import http
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from django.utils.translation import ugettext_lazy
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from soc.logic import models
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from soc.logic import out_of_band
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from soc.logic import path_link_name
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from soc.logic.models import document
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from soc.views import helper
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from soc.views import simple
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from soc.views.helper import access
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from soc.views.helper import decorators
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from soc.views.user import profile
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import soc.models.document
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import soc.views.helper.forms
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import soc.views.helper.requests
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import soc.views.helper.responses
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import soc.views.helper.widgets
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import soc.views.out_of_band
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DEF_CREATE_NEW_DOC_MSG = ' You can create a new document by visiting the' \
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                         ' <a href="/docs/edit">Create ' \
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                         'a New Document</a> page.'
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SUBMIT_MESSAGES = (
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 ugettext_lazy('Document saved.'),
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)
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def getDocForForm(form):
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  """Extracts doc fields from a form and creates a new doc from it
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  """
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  user = users.get_current_user()
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  if user:
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    email = user.email()
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  else:
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    email = None
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  partial_path = form.cleaned_data.get('partial_path')
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  link_name = form.cleaned_data.get('link_name')
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  properties = {}
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  properties['partial_path'] = partial_path
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  properties['link_name'] = link_name
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  properties['title'] = form.cleaned_data.get('title')
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  properties['short_name'] = form.cleaned_data.get('short_name')
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  properties['content'] = form.cleaned_data.get('content')
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  properties['author'] = models.user.logic.getFromFields(email=email)
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  properties['is_featured'] = form.cleaned_data.get('is_featured')
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  key_fields = document.logic.getKeyFieldsFromDict(properties)
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  doc = document.logic.updateOrCreateFromFields(properties, key_fields)
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  return doc
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class CreateForm(helper.forms.BaseForm):
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  """Django form displayed when Developer creates a Document.
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  """
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  content = forms.fields.CharField(widget=helper.widgets.TinyMCE(
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      attrs={'rows':10, 'cols':40}))
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  class Meta:
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    model = soc.models.document.Document
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    #: list of model fields which will *not* be gathered by the form
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    exclude = ['inheritance_line', 'author', 'created', 'modified']
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  def clean_partial_path(self):
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    partial_path = self.cleaned_data.get('partial_path')
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    # TODO(tlarsen): combine path and link_name and check for uniqueness
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    return partial_path
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   104
  def clean_link_name(self):
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    link_name = self.cleaned_data.get('link_name')
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    # TODO(tlarsen): combine path and link_name and check for uniqueness
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    return link_name
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DEF_DOCS_CREATE_TMPL = 'soc/docs/edit.html'
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365
74dec172944e Create decorators module in view/helper and add view decorator that catches exceptions like DeadlineExceededError, MemoryError, AssertionError (this code is being moved from respond function). Add view decorator to all view functions. In addition remove not needed imports from all affected files and fix too long lines.
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@decorators.view
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def create(request, page=None, template=DEF_DOCS_CREATE_TMPL):
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  """View to create a new Document entity.
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  Args:
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    request: the standard django request object
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    page: a soc.logic.site.page.Page object which is abstraction that combines 
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      a Django view with sidebar menu info
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    template: the "sibling" template (or a search list of such templates)
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      from which to construct the public.html template name (or names)
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   123
  Returns:
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    A subclass of django.http.HttpResponse which either contains the form to
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    be filled out, or a redirect to the correct view in the interface.
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  """
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   128
  try:
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    access.checkIsDeveloper(request)
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  except  soc.views.out_of_band.AccessViolationResponse, alt_response:
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    # TODO(tlarsen): change this to just limit the Documents that can be
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    #   created by the User in their current Role
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   133
    return alt_response.response()
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   135
  # create default template context for use with any templates
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  context = helper.responses.getUniversalContext(request)
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  context['page'] = page
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   139
  if request.method == 'POST':
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    form = CreateForm(request.POST)
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    if form.is_valid():
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      doc = getDocForForm(form)
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   145
      if not doc:
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        return http.HttpResponseRedirect('/')
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      new_path = path_link_name.combinePath([doc.partial_path, doc.link_name])
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      # redirect to new /docs/edit/new_path?s=0
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      # (causes 'Profile saved' message to be displayed)
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      return helper.responses.redirectToChangedSuffix(
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          request, None, new_path,
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          params=profile.SUBMIT_PROFILE_SAVED_PARAMS)
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  else: # method == 'GET':
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    # no link name specified, so start with an empty form
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    form = CreateForm()
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  context['form'] = form
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  return helper.responses.respond(request, template, context)
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DEF_DOCS_EDIT_TMPL = 'soc/docs/edit.html'
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class EditForm(CreateForm):
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  """Django form displayed a Document is edited.
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  """
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  doc_key_name = forms.fields.CharField(widget=forms.HiddenInput)
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  created_by = forms.fields.CharField(widget=helper.widgets.ReadOnlyInput(),
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                                      required=False)
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@decorators.view
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def edit(request, page=None, partial_path=None, link_name=None,
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         template=DEF_DOCS_EDIT_TMPL):
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  """View to modify the properties of a Document Model entity.
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  Args:
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    request: the standard django request object
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    page: a soc.logic.site.page.Page object which is abstraction that combines 
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      a Django view with sidebar menu info
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    partial_path: the Document's site-unique "path" extracted from the URL,
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      minus the trailing link_name
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    link_name: the last portion of the Document's site-unique "path"
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      extracted from the URL
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    template: the "sibling" template (or a search list of such templates)
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      from which to construct the public.html template name (or names)
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  Returns:
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    A subclass of django.http.HttpResponse which either contains the form to
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    be filled out, or a redirect to the correct view in the interface.
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  """
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  try:
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    access.checkIsDeveloper(request)
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  except  soc.views.out_of_band.AccessViolationResponse, alt_response:
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    # TODO(tlarsen): change this to just limit the Documents that can be
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    #   edited by the User in their current Role
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    return alt_response.response()
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  # create default template context for use with any templates
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  context = helper.responses.getUniversalContext(request)
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  context['page'] = page
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  doc = None  # assume that no Document entity will be found
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  path = path_link_name.combinePath([partial_path, link_name])
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  # try to fetch Document entity corresponding to path if one exists    
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  try:
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    if path:
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      doc = document.logic.getFromFields(partial_path=partial_path,
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                                         link_name=link_name)
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  except out_of_band.ErrorResponse, error:
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    # show custom 404 page when path doesn't exist in Datastore
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    error.message = error.message + DEF_CREATE_NEW_DOC_MSG
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    return simple.errorResponse(request, page, error, template, context)
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  if request.method == 'POST':
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    form = EditForm(request.POST)
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    if form.is_valid():
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      doc = getDocForForm(form)
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      if not doc:
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        return http.HttpResponseRedirect('/')
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      new_path = path_link_name.combinePath([doc.partial_path, doc.link_name])
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      # redirect to new /docs/edit/new_path?s=0
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      # (causes 'Profile saved' message to be displayed)
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      return helper.responses.redirectToChangedSuffix(
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          request, path, new_path,
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          params=profile.SUBMIT_PROFILE_SAVED_PARAMS)
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  else: # method == 'GET':
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    # try to fetch Document entity corresponding to path if one exists
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    if path:
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      if doc:
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        # is 'Profile saved' parameter present, but referrer was not ourself?
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        # (e.g. someone bookmarked the GET that followed the POST submit) 
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        if (request.GET.get(profile.SUBMIT_MSG_PARAM_NAME)
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            and (not helper.requests.isReferrerSelf(request, suffix=path))):
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          # redirect to aggressively remove 'Profile saved' query parameter
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          return http.HttpResponseRedirect(request.path)
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        # referrer was us, so select which submit message to display
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        # (may display no message if ?s=0 parameter is not present)
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        context['notice'] = (
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            helper.requests.getSingleIndexedParamValue(
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                request, profile.SUBMIT_MSG_PARAM_NAME,
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                values=SUBMIT_MESSAGES))
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        # populate form with the existing Document entity
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        author_link_name = doc.author.link_name
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        form = EditForm(initial={'doc_key_name': doc.key().name(),
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            'title': doc.title, 'partial_path': doc.partial_path,
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            'link_name': doc.link_name, 'short_name': doc.short_name,
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b37fc4c1e189 Eliminate the Work.abstract property and move the Document.content property
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            'content': doc.content, 'author': doc.author,
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            'is_featured': doc.is_featured, 'created_by': author_link_name})
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      else:
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        if request.GET.get(profile.SUBMIT_MSG_PARAM_NAME):
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          # redirect to aggressively remove 'Profile saved' query parameter
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          return http.HttpResponseRedirect(request.path)
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        context['lookup_error'] = ugettext_lazy(
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            'Document with that path not found.')
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c76a366c7ab4 Replace almost all occurences of linkname with link_name
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        form = EditForm(initial={'link_name': link_name})
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    else:  # no link name specified in the URL
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      if request.GET.get(profile.SUBMIT_MSG_PARAM_NAME):
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        # redirect to aggressively remove 'Profile saved' query parameter
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        return http.HttpResponseRedirect(request.path)
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      # no link name specified, so start with an empty form
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      form = EditForm()
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  context.update({'form': form,
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                  'entity': doc})
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  return helper.responses.respond(request, template, context)
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@decorators.view
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def delete(request, page=None, partial_path=None, link_name=None,
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           template=DEF_DOCS_EDIT_TMPL):
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  """Request handler to delete Document Model entity.
314
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  Args:
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    request: the standard django request object
358
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    page: a soc.logic.site.page.Page object which is abstraction that combines 
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      a Django view with sidebar menu info
314
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    partial_path: the Document's site-unique "path" extracted from the URL,
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      minus the trailing link_name
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    link_name: the last portion of the Document's site-unique "path"
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      extracted from the URL
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    template: the "sibling" template (or a search list of such templates)
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      from which to construct the public.html template name (or names)
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   298
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  Returns:
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    A subclass of django.http.HttpResponse which redirects 
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    to /site/docs/list.
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  """
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   303
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  try:
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    access.checkIsDeveloper(request)
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   306
  except  soc.views.out_of_band.AccessViolationResponse, alt_response:
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   307
    # TODO(tlarsen): change this to just limit the Documents that can be
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   308
    #   deleted by the User in their current Role
314
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   309
    return alt_response.response()
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   310
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   311
  # create default template context for use with any templates
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   312
  context = helper.responses.getUniversalContext(request)
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   313
  context['page'] = page
314
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   314
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   315
  existing_doc = None
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   316
  path = path_link_name.combinePath([partial_path, link_name])
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   317
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   318
  # try to fetch Document entity corresponding to path if one exists    
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   319
  try:
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    if path:
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   321
      existing_doc = document.logic.getFromFields(partial_path=partial_path,
dfaf249c12b2 Rearrange imports in home.py so they apply to new discussed format (separate "from ..." and "import ..." blocks). Add Delete Document functionality.
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                                                  link_name=link_name)
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   323
  except out_of_band.ErrorResponse, error:
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   324
    # show custom 404 page when path doesn't exist in Datastore
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   325
    error.message = error.message + DEF_CREATE_NEW_DOC_MSG
361
465e4df617de Make page argument required for errorResponse and requestLogin functions in simple.py and update affected files. Some keyword argument changes to in user/profile.py. All the changes are based on comments to r817.
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   326
    return simple.errorResponse(request, page, error, template, context)
314
dfaf249c12b2 Rearrange imports in home.py so they apply to new discussed format (separate "from ..." and "import ..." blocks). Add Delete Document functionality.
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diff changeset
   327
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   328
  if existing_doc:
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   329
    document.logic.delete(existing_doc)
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   330
377
d94ec6f104cc Refactor various site views into more generic locations, in preparation for
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   331
  return http.HttpResponseRedirect('/docs/list')