+
−#!/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.
+
−
+
−"""Views for Role profiles.
+
−"""
+
−
+
−__authors__ = [
+
−    '"Sverre Rabbelier" <sverre@rabbelier.nl>',
+
−    '"Lennard de Rijk" <ljvderijk@gmail.com>',
+
−  ]
+
−
+
−
+
−from django import forms
+
−from django import http
+
−from django.utils.translation import ugettext
+
−
+
−from soc.logic import cleaning
+
−from soc.logic import dicts
+
−from soc.logic.models import request as request_logic
+
−from soc.logic.models import user as user_logic
+
−from soc.logic.helper import notifications as notifications_helper
+
−from soc.logic.helper import request as request_helper
+
−from soc.views.helper import decorators
+
−from soc.views.helper import redirects
+
−from soc.views.helper import responses
+
−from soc.views.models import base
+
−from soc.views.models import request as request_view
+
−
+
−import soc.models.request
+
−import soc.views.helper.lists
+
−import soc.views.helper.responses
+
−import soc.views.helper.widgets
+
−
+
−
+
−ROLE_VIEWS = {}
+
−
+
−
+
−def addRole(view):
+
−  """Adds the specified view to the known role views.
+
−  """
+
−
+
−  global ROLE_VIEWS
+
−  params = view.getParams()
+
−  name = params['url_name']
+
−  ROLE_VIEWS[name] = view
+
−
+
−
+
−class View(base.View):
+
−  """Views for all entities that inherit from Role.
+
−
+
−  All views that only Role entities have are defined in this subclass.
+
−  """
+
−
+
−  DEF_INVITE_INSTRUCTION_MSG_FMT = ugettext(
+
−      'Please use this form to invite someone to become a %(name)s.')
+
−
+
−  DEF_REQUEST_INSTRUCTION_MSG_FMT = ugettext(
+
−      'Please use this form to request to become a %(name)s')
+
−
+
−  DEF_INVITE_ERROR_MSG_FMT = ugettext(
+
−      'This user can not receive an invite to become a %(name)s. <br/>'
+
−      'Please make sure there is no outstanding invite or request and '
+
−      'be sure that this user is not a %(name)s.')
+
−
+
−  DEF_REQUEST_ERROR_MSG_FMT = ugettext(
+
−      'You can not request to become a %(name)s. <br/>'
+
−      'Please make sure there is no outstanding invite or request and '
+
−      'be sure that you are not a %(name)s already.')
+
−
+
−
+
−  def __init__(self, params=None):
+
−    """
+
−
+
−    Args:
+
−      params: This dictionary should be filled with the parameters
+
−    """
+
−
+
−    new_params = {}
+
−
+
−    patterns = params.get('extra_django_patterns')
+
−
+
−    if not patterns:
+
−      patterns = []
+
−
+
−    if params.get('allow_requests_and_invites'):
+
−      # add patterns concerning requests and invites
+
−      patterns += [(r'^%(url_name)s/(?P<access_type>invite)/%(scope)s$',
+
−          'soc.views.models.%(module_name)s.invite',
+
−          'Create invite for %(name)s'),
+
−          (r'^%(url_name)s/(?P<access_type>accept_invite)/%(scope)s/%(lnp)s$',
+
−          'soc.views.models.%(module_name)s.accept_invite',
+
−          'Accept invite for %(name)s'),
+
−          (r'^%(url_name)s/(?P<access_type>process_request)/%(scope)s/%(lnp)s$',
+
−          'soc.views.models.%(module_name)s.process_request',
+
−          'Process request for %(name)s'),
+
−          (r'^%(url_name)s/(?P<access_type>request)/%(scope)s$',
+
−          'soc.views.models.%(module_name)s.request',
+
−          'Create a Request to become %(name)s')]
+
−    elif params.get('allow_invites'):
+
−      # add patterns concerning only invites
+
−      patterns += [(r'^%(url_name)s/(?P<access_type>invite)/%(scope)s$',
+
−          'soc.views.models.%(module_name)s.invite',
+
−          'Create invite for %(name)s'),
+
−          (r'^%(url_name)s/(?P<access_type>accept_invite)/%(scope)s/%(lnp)s$',
+
−          'soc.views.models.%(module_name)s.accept_invite',
+
−          'Accept invite for %(name)s'),
+
−          (r'^%(url_name)s/(?P<access_type>process_request)/%(scope)s/%(lnp)s$',
+
−          'soc.views.models.%(module_name)s.process_request',
+
−          'Process request for %(name)s')]
+
−
+
−    # add manage pattern
+
−    patterns += [(r'^%(url_name)s/(?P<access_type>manage)/%(scope)s/%(lnp)s$',
+
−        'soc.views.models.%(module_name)s.manage',
+
−        'Manage a %(name)s'),]
+
−
+
−    new_params['extra_django_patterns'] = patterns
+
−    new_params['scope_redirect'] = redirects.getInviteRedirect
+
−    new_params['manage_redirect'] = redirects.getListRolesRedirect
+
−
+
−    new_params['create_template'] = 'soc/role/edit.html'
+
−    new_params['edit_template'] = 'soc/role/edit.html'
+
−
+
−    new_params['create_extra_dynaproperties'] = {
+
−       'latitude':forms.fields.FloatField(widget=forms.HiddenInput,
+
−                                          required=False),
+
−       'longitude': forms.fields.FloatField(widget=forms.HiddenInput,
+
−                                            required=False),
+
−       'clean_link_id': cleaning.clean_existing_user('link_id'),
+
−       'clean_res_street': cleaning.clean_ascii_only('res_street'),
+
−       'clean_res_city': cleaning.clean_ascii_only('res_city'),
+
−       'clean_res_state': cleaning.clean_ascii_only('res_state'),
+
−       'clean_res_postalcode': cleaning.clean_ascii_only('res_postalcode'),
+
−       'clean_ship_street': cleaning.clean_ascii_only('ship_street'),
+
−       'clean_ship_city': cleaning.clean_ascii_only('ship_city'),
+
−       'clean_ship_state': cleaning.clean_ascii_only('ship_state'),
+
−       'clean_ship_postalcode': cleaning.clean_ascii_only('ship_postalcode'),
+
−       'clean_home_page': cleaning.clean_url('home_page'),
+
−       'clean_blog': cleaning.clean_url('blog'),
+
−       'clean_photo_url': cleaning.clean_url('photo_url'),
+
−       'scope_path': forms.CharField(widget=forms.HiddenInput,
+
−                                  required=True),
+
−       }
+
−
+
−    new_params['extra_dynaexclude'] = ['user', 'status', 'agreed_to_tos_on']
+
−
+
−    new_params['disallow_last_resign'] = False
+
−
+
−    params = dicts.merge(params, new_params, sub_merge=True)
+
−
+
−    super(View, self).__init__(params=params)
+
−
+
−    # add manage template
+
−    params['manage_template'] = 'soc/%(module_name)s/manage.html' % params
+
−
+
−    if params.get('show_in_roles_overview'):
+
−      # add to roles overview
+
−      addRole(self)
+
−
+
−  @decorators.merge_params
+
−  @decorators.check_access
+
−  def invite(self, request, access_type,
+
−             page_name=None, params=None, **kwargs):
+
−    """Creates the page on which an invite can be send out.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      access_type : the name of the access type which should be checked
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the context for this webpage
+
−    context = responses.getUniversalContext(request)
+
−    responses.useJavaScript(context, params['js_uses_all'])
+
−    context['page_name'] = page_name
+
−    context['instruction_message'] = (self.DEF_INVITE_INSTRUCTION_MSG_FMT %
+
−        params)
+
−
+
−    if request.method == 'POST':
+
−      return self.invitePost(request, context, params, **kwargs)
+
−    else:
+
−      # request.method == 'GET'
+
−      return self.inviteGet(request, context, params, **kwargs)
+
−
+
−  def inviteGet(self, request, context, params, **kwargs):
+
−    """Handles the GET request concerning the view that creates an invite
+
−    for attaining a certain Role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # set the role to the right name
+
−    fields = {'role': '%(module_name)s' % (params)}
+
−
+
−    # get the request view parameters and initialize the create form
+
−    request_params = request_view.view.getParams()
+
−    form = request_params['invite_form'](initial=fields)
+
−
+
−    # construct the appropriate response
+
−    return super(View, self)._constructResponse(request, entity=None,
+
−        context=context, form=form, params=request_params)
+
−
+
−  def invitePost(self, request, context, params, **kwargs):
+
−    """Handles the POST request concerning the view that creates an invite
+
−    for attaining a certain Role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      page_name: the page name displayed in templates as page and header title
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the request view parameters and populate the form using POST data
+
−    request_params = request_view.view.getParams()
+
−    form = request_params['invite_form'](request.POST)
+
−
+
−    if not form.is_valid():
+
−      # return the invalid form response
+
−      return self._constructResponse(request, entity=None, context=context,
+
−          form=form, params=request_params)
+
−
+
−    # collect the cleaned data from the valid form
+
−    key_name, form_fields = soc.views.helper.forms.collectCleanedFields(form)
+
−
+
−    # get the group entity for which this request is via the scope_path
+
−    group = self._logic.getGroupEntityFromScopePath(params['group_logic'],
+
−         kwargs['scope_path'])
+
−
+
−    # get the request scope path
+
−    request_scope_path = self._getRequestScopePathFromGroup(group)
+
−
+
−    # create the fields for the new request entity
+
−    request_fields = {'link_id': form_fields['link_id'].link_id,
+
−        'scope': group,
+
−        'scope_path': request_scope_path,
+
−        'role': params['module_name'],
+
−        'role_verbose': params['name'],
+
−        'status': 'group_accepted'}
+
−
+
−    if not self._isValidNewRequest(request_fields, params):
+
−      # not a valid invite
+
−      context['error_message'] = self.DEF_INVITE_ERROR_MSG_FMT % (
+
−          params)
+
−      return self.inviteGet(request, context, params, **kwargs)
+
−
+
−    # extract the key_name for the new request entity
+
−    key_name = request_logic.logic.getKeyNameFromFields(request_fields)
+
−
+
−    # create the request entity
+
−    entity = request_logic.logic.updateOrCreateFromKeyName(request_fields,
+
−                                                           key_name)
+
−
+
−    # send out an invite notification
+
−    notifications_helper.sendInviteNotification(entity)
+
−
+
−    group_view = params.get('group_view')
+
−    if not group_view:
+
−      return http.HttpResponseRedirect('/')
+
−    else:
+
−      # redirect to the requests list
+
−      return http.HttpResponseRedirect(
+
−          redirects.getListRequestsRedirect(group, group_view.getParams()))
+
−
+
−  def _getRequestScopePathFromGroup(self, group_entity):
+
−    """Returns the scope_path that should be put in a request for a given group.
+
−
+
−    Args:
+
−      group_entity: The group entity for which the request scope_path should
+
−                    be returned.
+
−    """
+
−
+
−    if group_entity.scope_path:
+
−      request_scope_path = '%s/%s' % (
+
−          group_entity.scope_path, group_entity.link_id)
+
−    else:
+
−      request_scope_path = group_entity.link_id
+
−
+
−    return request_scope_path
+
−
+
−
+
−  @decorators.merge_params
+
−  @decorators.check_access
+
−  def acceptInvite(self, request, access_type,
+
−                   page_name=None, params=None, **kwargs):
+
−    """Creates the page process an invite into a Role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      access_type : the name of the access type which should be checked
+
−      page_name: the page name displayed in templates as page and header title
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−     # get the context for this webpage
+
−    context = responses.getUniversalContext(request)
+
−    responses.useJavaScript(context, params['js_uses_all'])
+
−    context['page_name'] = page_name
+
−
+
−    if request.method == 'POST':
+
−      return self.acceptInvitePost(request, context, params, **kwargs)
+
−    else:
+
−      # request.method == 'GET'
+
−      return self.acceptInviteGet(request, context, params, **kwargs)
+
−
+
−  def acceptInviteGet(self, request, context, params, **kwargs):
+
−    """Handles the GET request concerning the creation of a Role via an
+
−    invite.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # create the form using the scope_path and link_id from kwargs 
+
−    # as initial value
+
−    fields = {'link_id': kwargs['link_id'],
+
−              'scope_path': kwargs['scope_path']}
+
−    form = params['invited_create_form'](initial=fields)
+
−
+
−    # construct the appropriate response
+
−    return super(View, self)._constructResponse(request, entity=None,
+
−        context=context, form=form, params=params)
+
−
+
−  def acceptInvitePost(self, request, context, params, **kwargs):
+
−    """Handles the POST request concerning the creation of a Role via an
+
−    invite.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # populate the form using the POST data
+
−    form = params['invited_create_form'](request.POST)
+
−
+
−    if not form.is_valid():
+
−      # return the invalid form response
+
−      return self._constructResponse(request, entity=None, context=context,
+
−          form=form, params=params)
+
−
+
−    # collect the cleaned data from the valid form
+
−    key_name, fields = soc.views.helper.forms.collectCleanedFields(form)
+
−
+
−    # call the post process method
+
−    self._acceptInvitePost(fields, request, context, params, **kwargs)
+
−
+
−    group_logic = params['group_logic']
+
−    group_entity = group_logic.getFromKeyName(fields['scope_path'])
+
−    fields['scope'] = group_entity
+
−
+
−    # make sure that this role becomes active once more in case this user
+
−    # has been reinvited
+
−    fields ['status'] = 'active'
+
−
+
−    # get the key_name for the new entity
+
−    key_name = self._logic.getKeyNameFromFields(fields)
+
−
+
−    # create new Role entity
+
−    entity = self._logic.updateOrCreateFromKeyName(fields, key_name)
+
−
+
−    # mark the request as completed
+
−    request_helper.completeRequestForRole(entity, params['module_name'])
+
−
+
−    # redirect to the roles overview page
+
−    return http.HttpResponseRedirect('/user/roles')
+
−
+
−  def _acceptInvitePost(self, fields, request, context, params, **kwargs):
+
−    """Used to post-process data after the fields have been cleaned.
+
−
+
−      Args:
+
−      fields : the cleaned fields from the role form
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−    pass
+
−
+
−
+
−  @decorators.merge_params
+
−  @decorators.check_access
+
−  def manage(self, request, access_type,
+
−             page_name=None, params=None, **kwargs):
+
−    """Handles the request concerning the view that let's 
+
−       you manage a role's status.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      page_name: the page name displayed in templates as page and header title
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the context for this webpage
+
−    context = responses.getUniversalContext(request)
+
−    responses.useJavaScript(context, params['js_uses_all'])
+
−    context['page_name'] = page_name
+
−
+
−    logic = params['logic']
+
−
+
−    # get the entity for the given fields in kwargs
+
−    fields = {'scope_path': kwargs['scope_path'],
+
−        'link_id': kwargs['link_id']}
+
−    role_entity = logic.getForFields(kwargs, unique=True)
+
−
+
−    # get the redirect for the cancel button or when the resignation is done
+
−    redirect = params['manage_redirect'](role_entity.scope,
+
−        params['group_view'].getParams())
+
−
+
−    # check to see if resign is true
+
−    get_dict = request.GET
+
−    resign = get_dict.get('resign')
+
−
+
−    if resign == 'true':
+
−
+
−      if params.get('disallow_last_resign'):
+
−        # check if the current role is the last for this scope
+
−        fields = {'scope': role_entity.scope,
+
−            'status': 'active'}
+
−        roles = logic.getForFields(fields, limit=2)
+
−
+
−        # if there is more then one left we can safely resign
+
−        resign = len(roles) > 1
+
−      else:
+
−        resign = True
+
−
+
−      if resign:
+
−        # change the status of this role_entity to invalid
+
−        fields = {'status': 'invalid'}
+
−        logic.updateEntityProperties(role_entity, fields)
+
−
+
−        # redirect to the roles listing
+
−        return http.HttpResponseRedirect(redirect)
+
−      else:
+
−        # show error to the user
+
−        context['not_allowed_to_resign'] = ugettext("This user can't be "
+
−            "resigned, please make sure it's not the last %(name)s." % params)
+
−
+
−    # set the appropriate context
+
−    context['entity'] = role_entity
+
−    context['url_name'] = params['url_name']
+
−    context['cancel_redirect'] = redirect
+
−
+
−    # get the manage template
+
−    template = params['manage_template']
+
−
+
−    # return a proper response
+
−    return responses.respond(request, template, context=context)
+
−
+
−
+
−  @decorators.merge_params
+
−  @decorators.check_access
+
−  def request(self, request, access_type,
+
−              page_name=None, params=None, **kwargs):
+
−    """Handles the request concerning the view that creates a request
+
−    for attaining a certain Role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      page_name: the page name displayed in templates as page and header title
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the context for this webpage
+
−    context = responses.getUniversalContext(request)
+
−    responses.useJavaScript(context, params['js_uses_all'])
+
−    context['page_name'] = page_name
+
−    context['instruction_message'] = (self.DEF_REQUEST_INSTRUCTION_MSG_FMT %
+
−        params)
+
−
+
−    if request.method == 'POST':
+
−      return self.requestPost(request, context, params, **kwargs)
+
−    else:
+
−      # request.method == 'GET'
+
−      return self.requestGet(request, context, params, **kwargs)
+
−
+
−  def requestGet(self, request, context, params, **kwargs):
+
−    """Handles the GET request concerning the creation of a request
+
−    to attain a role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # set right fields for the request form
+
−    user_entity = user_logic.logic.getForCurrentAccount()
+
−    fields = {'link_id' : user_entity.link_id,
+
−              'role' : params['module_name'],
+
−              'group_id' : kwargs['scope_path']}
+
−
+
−    # get the request view parameters and initialize the create form
+
−    request_params = request_view.view.getParams()
+
−    form = request_params['request_form'](initial=fields)
+
−
+
−    # construct the appropriate response
+
−    return super(View, self)._constructResponse(request, entity=None,
+
−        context=context, form=form, params=request_params)
+
−
+
−  def requestPost(self, request, context, params, **kwargs):
+
−    """Handles the POST request concerning the creation of a request
+
−    to attain a role.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      context: dictionary containing the context for this view
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the request view parameters and populate the form using POST data
+
−    request_params = request_view.view.getParams()
+
−    form = request_params['invite_form'](request.POST)
+
−
+
−    if not form.is_valid():
+
−      # return the invalid form response
+
−      return self._constructResponse(request, entity=None, context=context,
+
−          form=form, params=request_params)
+
−
+
−    # get the group entity for which this request is via the scope_path
+
−    group = self._logic.getGroupEntityFromScopePath(params['group_logic'],
+
−         kwargs['scope_path'])
+
−
+
−    # get the request scope path
+
−    request_scope_path = self._getRequestScopePathFromGroup(group)
+
−
+
−    # defensively set the fields we need for this request and set status to new
+
−    user_entity = user_logic.logic.getForCurrentAccount()
+
−    request_fields = {'link_id' : user_entity.link_id,
+
−        'scope' : group,
+
−        'scope_path' : request_scope_path,
+
−        'role' : params['module_name'],
+
−        'role_verbose' : params['name'],
+
−        'status' : 'new'}
+
−
+
−    if not self._isValidNewRequest(request_fields, params):
+
−      # not a valid request
+
−      context['error_message'] = self.DEF_REQUEST_ERROR_MSG_FMT % (
+
−          params)
+
−      return self.requestGet(request, context, params, **kwargs)
+
−
+
−    # extract the key_name for the new request entity
+
−    key_name = request_logic.logic.getKeyNameFromFields(request_fields)
+
−
+
−    # create the request entity
+
−    request_logic.logic.updateOrCreateFromKeyName(request_fields, key_name)
+
−
+
−    # TODO(ljvderijk): send out a message to alert the users 
+
−    # able to process this request
+
−
+
−    # redirect to roles overview
+
−    return http.HttpResponseRedirect('/user/roles')
+
−
+
−
+
−  @decorators.merge_params
+
−  @decorators.check_access
+
−  def processRequest(self, request, access_type,
+
−                     page_name=None, params=None, **kwargs):
+
−    """Creates the page upon which a request can be processed.
+
−
+
−    Args:
+
−      request: the standard Django HTTP request object
+
−      access_type : the name of the access type which should be checked
+
−      page_name: the page name displayed in templates as page and header title
+
−      params: a dict with params for this View
+
−      kwargs: the Key Fields for the specified entity
+
−    """
+
−
+
−    # get the context for this webpage
+
−    context = responses.getUniversalContext(request)
+
−    responses.useJavaScript(context, params['js_uses_all'])
+
−    context['page_name'] = page_name
+
−
+
−    # get the request entity using the information from kwargs
+
−    fields = {'link_id': kwargs['link_id'],
+
−        'scope_path': kwargs['scope_path'],
+
−        'role': params['module_name']}
+
−    request_entity = request_logic.logic.getForFields(fields, unique=True)
+
−
+
−    get_dict = request.GET
+
−
+
−    if 'status' in get_dict.keys():
+
−      if get_dict['status'] in ['group_accepted', 'rejected', 'ignored']:
+
−        # update the request_entity and redirect away from this page
+
−        request_status = get_dict['status']
+
−
+
−        # only update when the status is changing
+
−        if request_status != request_entity.status:
+
−          request_logic.logic.updateEntityProperties(request_entity, {
+
−              'status': get_dict['status']})
+
−
+
−          if request_status == 'group_accepted':
+
−            notifications_helper.sendInviteNotification(request_entity)
+
−
+
−        group_view = params.get('group_view')
+
−        if not group_view:
+
−          return http.HttpResponseRedirect('/')
+
−        else:
+
−          # redirect to the requests list
+
−          return http.HttpResponseRedirect(
+
−              redirects.getListRequestsRedirect(request_entity.scope, 
+
−                  group_view.getParams()))
+
−
+
−    # put the entity in the context
+
−    context['entity'] = request_entity
+
−    context['request_status'] = request_entity.status 
+
−    context['module_name'] = params['module_name']
+
−
+
−    #display the request processing page using the appropriate template
+
−    template = request_view.view.getParams()['request_processing_template']
+
−
+
−    return responses.respond(request, template, context=context)
+
−
+
−  def _isValidNewRequest(self, request_fields, params):
+
−    """Checks if this is a valid Request object to make.
+
−
+
−    Args:
+
−    request_fields: dict containing the fields for the new request entity.
+
−    params: parameters for the current view
+
−    """
+
−    fields = request_fields.copy()
+
−    fields['status'] = ['new', 'group_accepted', 'ignored']
+
−
+
−    request_entity = request_logic.logic.getForFields(fields, unique=True)
+
−    
+
−    if request_entity:
+
−      # already outstanding request
+
−      return False
+
−
+
−    # check if the role already exists
+
−    fields = {'scope': request_fields['scope'],
+
−        'link_id': request_fields['link_id'],
+
−        'status': ['active','inactive'],
+
−        }
+
−
+
−    role_entity = params['logic'].getForFields(fields, unique=True)
+
−
+
−    if role_entity:
+
−      # already has this role
+
−      return False
+
−
+
−    # no oustanding request or a valid role
+
−    return True