Move parameter construction into a seperate module
authorSverre Rabbelier <srabbelier@gmail.com>
Sat, 29 Nov 2008 18:30:58 +0000
changeset 611 2ec30182e5f1
parent 610 e0bd276ffd82
child 612 3cca81b1e5a1
Move parameter construction into a seperate module This is part of an effort to make base.py less bloated and have it's methods be more cohesive. Patch by: Sverre Rabbelier
app/soc/views/helper/params.py
app/soc/views/helper/redirects.py
app/soc/views/models/base.py
app/soc/views/models/user_self.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/views/helper/params.py	Sat Nov 29 18:30:58 2008 +0000
@@ -0,0 +1,215 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2008 the Melange authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Params related methods
+"""
+
+__authors__ = [
+  '"Sverre Rabbelier" <sverre@rabbelier.nl>',
+  ]
+
+
+from django import forms
+from django.utils.translation import ugettext_lazy
+
+from soc.logic import cleaning
+from soc.logic import dicts
+from soc.views import helper
+from soc.views.helper import access
+from soc.views.helper import dynaform
+from soc.views.helper import redirects
+
+
+LIST_DESCRIPTION_FMT = ugettext_lazy(
+    'List of %(name_plural)s in Google Open Source Programs.')
+
+DEF_SUBMIT_MSG_PARAM_NAME = 's'
+DEF_SUBMIT_MSG_PROFILE_SAVED = 0
+
+
+def constructParams(params):
+  """Constructs a new params dictionary based on params
+
+  Params usage:
+    The params dictionary is passed to getCreateForm and getEditForm,
+      see their docstring on how they use it.
+
+    rights: The rights value is merged with a default rights
+      dictionary and then used as rights value.
+    url_name: The url_name value is used in constructing several
+      redirects as the first part of the url.
+    module_name: The module_name value is used in constructing the
+      location of several templates. It is expected that it matches
+      the part after "/templates/soc/" for this View.
+    name_plural: The name_plural argument is provided to the
+      LIST_DESCRIPTION when constructing the list_description field.
+    extra_dynainclude: The extra_dynainclude value is used when
+      constructing the create_dynainclude value.
+    extra_dynaexclude: The extra_dynaexclude value is used when
+      constructing the create_dynaexclude value.
+    logic: The logic value is used as argument to clean_new_link_id
+      from the cleaning module.
+  """
+
+  rights = {}
+  rights['unspecified'] = []
+  rights['any_access'] = [access.checkIsLoggedIn]
+  rights['public'] = [access.checkIsUser]
+  rights['create'] = [access.checkIsDeveloper]
+  rights['edit'] = [access.checkIsDeveloper]
+  rights['delete'] = [access.checkIsDeveloper]
+  rights['list'] = [access.checkIsDeveloper]
+
+  if 'rights' in params:
+    rights = dicts.merge(params['rights'], rights)
+
+  new_params = {}
+  new_params['rights'] = rights
+  new_params['create_redirect'] = '/%(url_name)s' % params
+  new_params['edit_redirect'] = '/%(url_name)s/edit' % params
+  new_params['missing_redirect'] = '/%(url_name)s/create' % params
+  new_params['delete_redirect'] = '/%(url_name)s/list' % params
+  new_params['invite_redirect'] = '/request/list'
+
+  new_params['sidebar'] = None
+  new_params['sidebar_defaults'] = [
+   ('/%s/create', 'New %(name)s', 'create'),
+   ('/%s/list', 'List %(name_plural)s', 'list'),
+  ]
+  new_params['sidebar_additional'] = []
+
+  new_params['key_fields_prefix'] = []
+
+  new_params['django_patterns'] = None
+  new_params['django_patterns_defaults'] = [
+      (r'^%(url_name)s/show/%(key_fields)s$',
+          'soc.views.models.%s.public', 'Show %(name_short)s'),
+      (r'^%(url_name)s/create$',
+          'soc.views.models.%s.create', 'Create %(name_short)s'),
+      (r'^%(url_name)s/create/%(key_fields)s$',
+          'soc.views.models.%s.create', 'Create %(name_short)s'),
+      (r'^%(url_name)s/delete/%(key_fields)s$',
+          'soc.views.models.%s.delete', 'Delete %(name_short)s'),
+      (r'^%(url_name)s/edit/%(key_fields)s$',
+          'soc.views.models.%s.edit', 'Edit %(name_short)s'),
+      (r'^%(url_name)s/list$',
+          'soc.views.models.%s.list', 'List %(name_plural)s'),
+      ]
+
+  new_params['public_template'] = 'soc/%(module_name)s/public.html' % params
+  new_params['create_template'] = 'soc/models/edit.html'
+  new_params['edit_template'] = 'soc/models/edit.html'
+  new_params['list_template'] = 'soc/models/list.html'
+  new_params['invite_template'] = 'soc/models/invite.html'
+
+  new_params['error_public'] = 'soc/%(module_name)s/error.html' % params
+  new_params['error_edit'] = 'soc/%(module_name)s/error.html'  % params
+
+  new_params['list_main'] = 'soc/list/main.html'
+  new_params['list_pagination'] = 'soc/list/pagination.html'
+  new_params['list_row'] = 'soc/%(module_name)s/list/row.html' % params
+  new_params['list_heading'] = 'soc/%(module_name)s/list/heading.html' % params
+
+  new_params['list_action'] = (redirects.getEditRedirect, params)
+  new_params['list_params'] = {
+      'list_action': 'action',
+      'list_description': 'description',
+      'list_main': 'main',
+      'list_pagination': 'pagination',
+      'list_row': 'row',
+      'list_heading': 'heading',
+      }
+
+  new_params['list_description'] = LIST_DESCRIPTION_FMT % params
+  new_params['save_message'] = [ugettext_lazy('Profile saved.')]
+  new_params['submit_msg_param_name'] = DEF_SUBMIT_MSG_PARAM_NAME
+  new_params['edit_params'] = {
+      DEF_SUBMIT_MSG_PARAM_NAME: DEF_SUBMIT_MSG_PROFILE_SAVED,
+      }
+
+  new_params['dynabase'] = helper.forms.BaseForm
+
+  new_params['create_dynainclude'] = [] + params.get('extra_dynainclude', [])
+  new_params['create_dynaexclude'] = ['scope', 'scope_path'] + \
+      params.get('extra_dynaexclude', [])
+  new_params['create_dynafields'] = {
+      'clean_link_id': cleaning.clean_new_link_id(params['logic']),
+      'clean_feed_url': cleaning.clean_feed_url,
+      }
+
+  dynafields = {
+      'clean_link_id': cleaning.clean_link_id,
+      'link_id': forms.CharField(widget=helper.widgets.ReadOnlyInput()),
+      }
+  dynafields.update(params.get('extra_dynafields', {}))
+
+  new_params['edit_dynainclude'] = None
+  new_params['edit_dynaexclude'] = None
+  new_params['edit_dynafields'] = dynafields
+
+  params = dicts.merge(params, new_params)
+
+  # These need to be constructed separately, because they require
+  # parameters that can be defined either in params, or new_params.
+  if not 'create_form' in params:
+    params['create_form'] = getCreateForm(params)
+
+  if not 'edit_form' in params:
+    params['edit_form'] = getEditForm(params)
+
+  return params
+
+def getCreateForm(params):
+  """Constructs a new CreateForm using params
+
+  Params usage:
+    dynabase: The dynabase value is used as the base argument to
+      dynaform.newDynaForm.
+    logic: The logic value is used to get the model argument to newDynaForm.
+    create_dynainclude: same as dynabase, but as dynainclude argument
+    create_dynaexclude: same as dynabase, but as dynaexclude argument
+    create_dynafields: same as dynabase, but as dynafields argument
+  """
+
+  create_form = dynaform.newDynaForm(
+    dynabase = params['dynabase'],
+    dynamodel = params['logic'].getModel(),
+    dynainclude = params['create_dynainclude'],
+    dynaexclude = params['create_dynaexclude'],
+    dynafields = params['create_dynafields'],
+    )
+
+  return create_form
+
+def getEditForm(params):
+  """Constructs a new EditForm using params
+
+  Params usage:
+    create_form: The dynabase value is used as the dynaform argument
+      to dyanform.extendDynaForm.
+    edit_dynainclude: same as create_form, but as dynainclude argument
+    edit_dynaexclude: same as create_form, but as dynaexclude argument
+    edit_dynafields: same as create_form, but as dynafields argument
+  """
+
+  edit_form = dynaform.extendDynaForm(
+    dynaform = params['create_form'],
+    dynainclude = params['edit_dynainclude'],
+    dynaexclude = params['edit_dynaexclude'],
+    dynafields = params['edit_dynafields'],
+    )
+
+  return edit_form
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/views/helper/redirects.py	Sat Nov 29 18:30:58 2008 +0000
@@ -0,0 +1,31 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2008 the Melange authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Redirect related methods
+"""
+
+__authors__ = [
+  '"Sverre Rabbelier" <sverre@rabbelier.nl>',
+  ]
+
+
+def getEditRedirect(entity, params):
+  """Returns the edit redirect for the specified entity
+  """
+
+  suffix = params['logic'].getKeySuffix(entity)
+  url_name = params['url_name']
+  return '/%s/edit/%s' % (url_name, suffix)
--- a/app/soc/views/models/base.py	Sat Nov 29 17:20:52 2008 +0000
+++ b/app/soc/views/models/base.py	Sat Nov 29 18:30:58 2008 +0000
@@ -25,23 +25,19 @@
 
 
 from django import http
-from django import forms
-from django.conf.urls import defaults
 from django.utils.translation import ugettext_lazy
 
 import soc.logic
 import soc.logic.lists
 import soc.views.helper.lists
 import soc.views.helper.responses
+import soc.views.helper.params
 
-from soc.logic import cleaning
 from soc.logic import dicts
 from soc.logic import models
 from soc.models import linkable
 from soc.views import helper
 from soc.views import out_of_band
-from soc.views.helper import access
-from soc.views.helper import dynaform
 
 
 class View(object):
@@ -53,9 +49,6 @@
   self._logic: the logic singleton for this entity
   """
 
-  DEF_SUBMIT_MSG_PARAM_NAME = 's'
-  DEF_SUBMIT_MSG_PROFILE_SAVED = 0
-
   DEF_CREATE_NEW_ENTITY_MSG_FMT = ugettext_lazy(
       ' You can create a new %(entity_type)s by visiting'
       ' <a href="%(create)s">Create '
@@ -70,123 +63,9 @@
         the fields it should contain, and how they are used.
     """
 
-    rights = {}
-    rights['unspecified'] = []
-    rights['any_access'] = [access.checkIsLoggedIn]
-    rights['public'] = [access.checkIsUser]
-    rights['create'] = [access.checkIsDeveloper]
-    rights['edit'] = [access.checkIsDeveloper]
-    rights['delete'] = [access.checkIsDeveloper]
-    rights['list'] = [access.checkIsDeveloper]
-
-    if 'rights' in params:
-      rights = dicts.merge(params['rights'], rights)
-
-    new_params = {}
-    new_params['rights'] = rights
-    new_params['create_redirect'] = '/%(url_name)s' % params
-    new_params['edit_redirect'] = '/%(url_name)s/edit' % params
-    new_params['missing_redirect'] = '/%(url_name)s/create' % params
-    new_params['delete_redirect'] = '/%(url_name)s/list' % params
-    new_params['invite_redirect'] = '/request/list'
-    
-    new_params['sidebar'] = None
-    new_params['sidebar_defaults'] = [
-     ('/%s/create', 'New %(name)s', 'create'),
-     ('/%s/list', 'List %(name_plural)s', 'list'),
-    ]
-    new_params['sidebar_additional'] = []
-
-    new_params['key_fields_prefix'] = []
-
-    new_params['django_patterns'] = None
-    new_params['django_patterns_defaults'] = [
-        (r'^%(url_name)s/show/%(key_fields)s$', 
-            'soc.views.models.%s.public', 'Show %(name_short)s'),
-        (r'^%(url_name)s/create$',
-            'soc.views.models.%s.create', 'Create %(name_short)s'),
-        (r'^%(url_name)s/create/%(key_fields)s$',
-            'soc.views.models.%s.create', 'Create %(name_short)s'),
-        (r'^%(url_name)s/delete/%(key_fields)s$',
-            'soc.views.models.%s.delete', 'Delete %(name_short)s'),
-        (r'^%(url_name)s/edit/%(key_fields)s$',
-            'soc.views.models.%s.edit', 'Edit %(name_short)s'),
-        (r'^%(url_name)s/list$',
-            'soc.views.models.%s.list', 'List %(name_plural)s'),
-        ]
-
-    new_params['public_template'] = 'soc/%(module_name)s/public.html' % params
-    new_params['create_template'] = 'soc/models/edit.html'
-    new_params['edit_template'] = 'soc/models/edit.html'
-    new_params['list_template'] = 'soc/models/list.html'
-    new_params['invite_template'] = 'soc/models/invite.html'
-
-    new_params['error_public'] = 'soc/%(module_name)s/error.html' % params
-    new_params['error_edit'] = 'soc/%(module_name)s/error.html'  % params
-
-    new_params['list_main'] = 'soc/list/main.html'
-    new_params['list_pagination'] = 'soc/list/pagination.html'
-    new_params['list_row'] = 'soc/%(module_name)s/list/row.html' % params
-    new_params['list_heading'] = 'soc/%(module_name)s/list/heading.html' % params
+    self._params = helper.params.constructParams(params)
+    self._logic = params['logic']
 
-    new_params['list_action'] = (self.getEditRedirect, None)
-    new_params['list_params'] = {
-        'list_action': 'action',
-        'list_description': 'description',
-        'list_main': 'main',
-        'list_pagination': 'pagination',
-        'list_row': 'row',
-        'list_heading': 'heading',
-        }
-
-    description = ugettext_lazy('List of %(name_plural)s in Google Open Source Programs.')
-    new_params['list_description'] = description % params
-    new_params['save_message'] = [ugettext_lazy('Profile saved.')]
-    new_params['edit_params'] = {
-        self.DEF_SUBMIT_MSG_PARAM_NAME: self.DEF_SUBMIT_MSG_PROFILE_SAVED,
-        }
-
-    new_params['dynabase'] = helper.forms.BaseForm
-
-    new_params['create_dynainclude'] = [] + params.get('extra_dynainclude', [])
-    new_params['create_dynaexclude'] = ['scope', 'scope_path'] + \
-        params.get('extra_dynaexclude', [])
-    new_params['create_dynafields'] = {
-        'clean_link_id': cleaning.clean_new_link_id(params['logic']),
-        'clean_feed_url': cleaning.clean_feed_url,
-        }
-
-    dynafields = {
-        'clean_link_id': cleaning.clean_link_id,
-        'link_id': forms.CharField(widget=helper.widgets.ReadOnlyInput()),
-        }
-    dynafields.update(params.get('extra_dynafields', {}))
-
-    new_params['edit_dynainclude'] = None
-    new_params['edit_dynaexclude'] = None
-    new_params['edit_dynafields'] = dynafields
-
-    self._params = dicts.merge(params, new_params)
-    self._logic = self._params['logic']
-
-    # These need to be constructed seperately, because they require
-    # parameters that can be defined either in params, or new_params.
-    if 'create_form' not in self._params:
-      self._params['create_form'] = dynaform.newDynaForm(
-        dynabase = self._params['dynabase'],
-        dynamodel = self._logic.getModel(),
-        dynainclude = self._params['create_dynainclude'],
-        dynaexclude = self._params['create_dynaexclude'],
-        dynafields = self._params['create_dynafields'],
-        )
-
-    if 'edit_form' not in self._params:
-      self._params['edit_form'] = dynaform.extendDynaForm(
-        dynaform = self._params['create_form'],
-        dynainclude = self._params['edit_dynainclude'],
-        dynaexclude = self._params['edit_dynaexclude'],
-        dynafields = self._params['edit_dynafields'],
-        )
 
   def public(self, request, page_name=None, params=None, **kwargs):
     """Displays the public page for the entity specified by **kwargs.
@@ -411,6 +290,9 @@
         existing entity. If the seed argument is present, it is passed
         as the 'initial' argument on construction. Otherwise, it is
         called with no arguments.
+      submit_msg_param_name: The submit_msg_param_name value is used
+        as the key part in the ?key=value construct for the submit
+        message parameter (see also save_message).
 
     Args:
       request: the django request object
@@ -426,14 +308,14 @@
     # Remove the params from the request, this is relevant only if
     # someone bookmarked a POST page.
     is_self_referrer = helper.requests.isReferrerSelf(request, suffix=suffix)
-    if request.GET.get(self.DEF_SUBMIT_MSG_PARAM_NAME):
+    if request.GET.get(params['submit_msg_param_name']):
       if (not entity) or (not is_self_referrer):
         return http.HttpResponseRedirect(request.path)
 
     if entity:
       # Note: no message will be displayed if parameter is not present
       context['notice'] = helper.requests.getSingleIndexedParamValue(
-          request, self.DEF_SUBMIT_MSG_PARAM_NAME,
+          request, params['submit_msg_param_name'],
           values=params['save_message'])
 
       # populate form with the existing entity
@@ -576,14 +458,6 @@
 
     return http.HttpResponseRedirect(redirect)
 
-  def getEditRedirect(self, entity, _):
-    """Returns the edit redirect for the specified entity
-    """
-
-    suffix = self._logic.getKeySuffix(entity)
-    url_name = self._params['url_name']
-    return '/%s/edit/%s' % (url_name, suffix)
-
   def _editPost(self, request, entity, fields):
     """Performs any required processing on the entity to post its edit page.
 
--- a/app/soc/views/models/user_self.py	Sat Nov 29 17:20:52 2008 +0000
+++ b/app/soc/views/models/user_self.py	Sat Nov 29 18:30:58 2008 +0000
@@ -179,7 +179,7 @@
       if user:
         # is 'Profile saved' parameter present, but referrer was not ourself?
         # (e.g. someone bookmarked the GET that followed the POST submit)
-        if (request.GET.get(self.DEF_SUBMIT_MSG_PARAM_NAME)
+        if (request.GET.get(params['submit_msg_param_name'])
             and (not helper.requests.isReferrerSelf(request))):
           # redirect to aggressively remove 'Profile saved' query parameter
           return http.HttpResponseRedirect(request.path)
@@ -188,13 +188,13 @@
         # (may display no message if ?s=0 parameter is not present)
         context['notice'] = (
             helper.requests.getSingleIndexedParamValue(
-                request, self.DEF_SUBMIT_MSG_PARAM_NAME,
+                request, params['submit_msg_param_name'],
                 values=params['save_message']))
 
         # populate form with the existing User entity
         form = UserForm(instance=user)
       else:
-        if request.GET.get(self.DEF_SUBMIT_MSG_PARAM_NAME):
+        if request.GET.get(params['submit_msg_param_name']):
           # redirect to aggressively remove 'Profile saved' query parameter
           return http.HttpResponseRedirect(request.path)