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Location: conntrackt/conntrackt/views.py - annotation
3d702d4d7154
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CONNT-25: Updating application and project to use Django 1.9.x:
- Updated the html_link tag implementation to produce safe output, and
added tests for it.
- Updated URL configuration in both the application and test project
according to deprecation warning.
- Updated views that return customized forms to ensure the form_class
passed in to get_form is optional.
- Bumped Django in both setup script and development requirements to
version 1.9.x.
- Updated test project configuration to match the version produced by
Django 1.9.x admin commands.
- Updated the html_link tag implementation to produce safe output, and
added tests for it.
- Updated URL configuration in both the application and test project
according to deprecation warning.
- Updated views that return customized forms to ensure the form_class
passed in to get_form is optional.
- Bumped Django in both setup script and development requirements to
version 1.9.x.
- Updated test project configuration to match the version produced by
Django 1.9.x admin commands.
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b2d842037a63 b2d842037a63 b2d842037a63 b2d842037a63 8fe010d0a605 8fe010d0a605 8fe010d0a605 8fe010d0a605 8fe010d0a605 2d83b9633ce7 8fe010d0a605 8fe010d0a605 8fe010d0a605 8fe010d0a605 8fe010d0a605 8fe010d0a605 2d83b9633ce7 8fe010d0a605 8fe010d0a605 8fe010d0a605 ba26a581c827 8fe010d0a605 8fe010d0a605 8fe010d0a605 | # -*- coding: utf-8 -*-
#
# Copyright (C) 2013 Branko Majic
#
# This file is part of Django Conntrackt.
#
# Django Conntrackt is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# Django Conntrackt is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# Django Conntrackt. If not, see <http://www.gnu.org/licenses/>.
#
# Standard library imports.
from StringIO import StringIO
from zipfile import ZipFile, ZIP_DEFLATED
import json
# Django imports.
from django.contrib.auth.decorators import permission_required
from django.contrib import messages
from django.core.exceptions import ValidationError
from django.core.urlresolvers import reverse, reverse_lazy
from django.db.models import Q
from django.db.models.deletion import Collector
from django.http import HttpResponse
from django.shortcuts import render_to_response, get_object_or_404
from django.views.generic import TemplateView, DetailView, CreateView, UpdateView, DeleteView, View
# Third-party application imports.
from braces.views import MultiplePermissionsRequiredMixin, SetHeadlineMixin
# Application imports.
from .forms import ProjectForm, LocationForm, EntityForm, InterfaceForm, CommunicationForm
from .models import Project, Entity, Location, Interface, Communication
from .utils import generate_entity_iptables, generate_project_diagram
class RedirectToNextMixin(object):
"""
View mixin that can be used for redirecting the user to URL defined through
a GET parameter. The mixin is usable with Create/Update/Delete views that
utilise the get_success_url() call.
The mixin accepts the following class options:
next_parameter - Name of the GET parameter that contains the redirect
URL. Defaults to "next".
"""
next_parameter = "next"
def get_success_url(self):
"""
Returns the success URL to which the user will be redirected.
"""
return self.request.GET.get(self.next_parameter, super(RedirectToNextMixin, self).get_success_url())
class RelatedItemsMixin(object):
"""
View mixin that adds related items of a referenced model object to context
data in form of a nested list, including the reference model object as the
first element of a list.
The context data will be passed using the "related_items" key.
This data can be used in the template by passing it through the
unordered_list template tag.
The reference object is accessed via "object" property of calling view
(i.e. self.object).
For more details on implementation, see:
RelatedCollectorMixin.get_dependant_objects_representation method
"""
def get_context_data(self, **kwargs):
"""
Adds the related items of a reference model object to context data.
Returns:
Context data.
"""
# Set the context using the parent class.
context = super(RelatedItemsMixin, self).get_context_data(**kwargs)
# Add to context the nested list of string representations of related
# items.
context["related_items"] = self.object.get_dependant_objects_representation()
return context
class IndexView(MultiplePermissionsRequiredMixin, TemplateView):
"""
Custom view used for rendering the index page.
"""
template_name = 'conntrackt/index.html'
# Required permissions.
permissions = {
"all": ("conntrackt.view",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_context_data(self, **kwargs):
"""
Returns the context data that should be used for rendering of the
template.
Adds the 'projects' context object containing all of the projects
available sorted aplhabetically by name.
"""
# Set the context using the parent class.
context = super(IndexView, self).get_context_data(**kwargs)
# Store information about all projcts in context.
context['projects'] = Project.objects.all().order_by('name')
# Store information about all locations in context.
context['locations'] = Location.objects.all().order_by('name')
return context
class ProjectView(MultiplePermissionsRequiredMixin, DetailView):
"""
Custom view for presenting the project information.
"""
model = Project
permissions = {
"all": ("conntrackt.view",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_context_data(self, **kwargs):
"""
Returns the context data that should be used for rendering of the
template.
Adds the 'location_entities' context object that contains tuples of the
form '(location, entities)', where location is an instance of a
Location, and entities is a query set of entities that belong to that
particular location, and to related project.
"""
# Set the context using the parent class.
context = super(ProjectView, self).get_context_data(**kwargs)
# Set-up an array that will contaion (location, entities) tuples.
location_entities = []
# Add the (location, entities) tuple for each location that has entities
# belonging to the related project.
for location in Location.objects.filter(entity__project=self.object).distinct().order_by("name"):
entities = Entity.objects.filter(project=self.object, location=location)
location_entities.append((location, entities))
# Add the (location, entities) tuples to context.
context['location_entities'] = location_entities
# Add all project communications to context.
context['communications'] = self.object.get_project_communications_summary()
# Finally return the context.
return context
class EntityView(MultiplePermissionsRequiredMixin, DetailView):
"""
Custom view for presenting entity information.
"""
# Optimise the query to fetch the related data from reverse relationships.
queryset = Entity.objects.all()
queryset = queryset.prefetch_related('interface_set__destination_set__source__entity')
queryset = queryset.prefetch_related('interface_set__destination_set__destination__entity')
queryset = queryset.prefetch_related('interface_set__source_set__source__entity')
queryset = queryset.prefetch_related('interface_set__source_set__destination__entity')
# Required permissions.
permissions = {
"all": ("conntrackt.view",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_context_data(self, **kwargs):
"""
Returns the context data that should be used for rendering of the
template.
Adds the 'entity_iptables' context object that contains full iptables
rules generated for the entity.
"""
# Call the parent class method.
context = super(EntityView, self).get_context_data(**kwargs)
# Add the rendered iptables rules to the context.
context['entity_iptables'] = generate_entity_iptables(self.object)
# Add the incoming and outgoing commmunication to the context.
context["incoming_communications"] = self.object.incoming_communications()
context["outgoing_communications"] = self.object.outgoing_communications()
# Add the interfaces to the context.
context["interfaces"] = self.object.interface_set.all().order_by("name")
# Add project/location to the context.
context["project"] = self.object.project
context["location"] = self.object.location
return context
@permission_required("conntrackt.view", raise_exception=True)
def entity_iptables(request, pk):
"""
Custom view that returns response containing iptables rules generated for an
entity.
Makes sure to set the Content-Disposition of a response in order to
signal the browser it should start download of this view's response
immediately. Also sets the suggested filename for it.
Arguments:
pk - Primary key of the Entity object for which the rules should be
generated.
Returns:
Response object that contains the iptables rules for specified entity.
"""
# Fetch the entity, and construct the response with iptables rules as
# content.
entity = get_object_or_404(Entity, pk=pk)
content = generate_entity_iptables(entity)
response = HttpResponse(content, content_type='text/plain')
# Add the Content-Disposition information for the browser, telling the
# browser to download the file with suggested filename.
response['Content-Disposition'] = "attachment; filename=%s-iptables.conf" % entity.name.lower().replace(" ", "_")
return response
@permission_required("conntrackt.view", raise_exception=True)
def project_iptables(request, project_id, location_id=None):
"""
Custom view for obtaining iptables for all entities of a project or project
location in a single ZIP file.
Arguments:
request - Request object.
project_id - Unique ID of the project for whose entities the iptables
rules should be generated.
location_id - Optional unique ID of the project location for whose
entities the iptables rules should be generated. Default is None, which
means generate rules for _all_ entities in a project.
Returns:
Response object that contains the ZIP file and Content-Disposition
information.
"""
# Fetch the project.
project = get_object_or_404(Project, pk=project_id)
# Set-up a string IO object to which we'll write the ZIP file (in-memory).
buff = StringIO()
# Create a new ZIP file in-memory.
zipped_iptables = ZipFile(buff, "w", ZIP_DEFLATED)
# Create the response object, setting the mime type so browser could offer
# to open the file with program as well.
response = HttpResponse(content_type='application/zip')
# If specific location was specified, get the entities that are part of that
# project location only, otherwise fetch all of the project's entities. Also
# set-up the filename that will be suggested to the browser.
if location_id:
location = get_object_or_404(Location, pk=location_id)
entities = project.entity_set.filter(location=location)
filename = '%s-%s-iptables.zip' % (project.name.lower().replace(" ", "_"), location.name.lower().replace(" ", "_"))
else:
entities = project.entity_set.all()
filename = '%s-iptables.zip' % (project.name.lower().replace(" ", "_"))
# Render iptables rules for each entity, placing them in the ZIP archive.
for entity in entities:
entity_iptables = generate_entity_iptables(entity)
zipped_iptables.writestr("%s-iptables.conf" % entity.name.lower().replace(" ", "_"), entity_iptables)
# Close the archive, and flush the buffer.
zipped_iptables.close()
buff.flush()
# Write the contents of our buffer (ZIP archive) to response content, and
# close the IO string.
response.write(buff.getvalue())
buff.close()
# Set the Content-Disposition so the browser would know it should download
# the archive, and suggest the filename.
response['Content-Disposition'] = 'attachment; filename="%s"' % filename
# Finally return the response object.
return response
class ProjectCreateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, CreateView):
"""
View for creating a new project.
"""
model = Project
form_class = ProjectForm
headline = "Add new project"
template_name = "conntrackt/create_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.add_project",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
class ProjectUpdateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, UpdateView):
"""
View for modifying an existing project.
"""
model = Project
form_class = ProjectForm
template_name = "conntrackt/update_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.change_project",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_headline(self):
"""
Set headline based on project name.
"""
return "Update project %s" % self.object.name
class ProjectDeleteView(RelatedItemsMixin, RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, DeleteView):
"""
View for deleting a project.
"""
model = Project
template_name = "conntrackt/delete_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.delete_project",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
success_url = reverse_lazy("index")
def post(self, *args, **kwargs):
"""
Add a success message that will be displayed to the user to confirm the
project deletion.
"""
messages.success(self.request, "Project %s has been removed." % self.get_object().name, extra_tags="alert alert-success")
return super(ProjectDeleteView, self).post(*args, **kwargs)
def get_headline(self):
"""
Set headline based on project name.
"""
return "Delete project %s" % self.object.name
class LocationCreateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, CreateView):
"""
View for creating a new location.
"""
model = Location
form_class = LocationForm
headline = "Add new location"
template_name = "conntrackt/create_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.add_location",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
success_url = reverse_lazy("index")
class LocationUpdateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, UpdateView):
"""
View for modifying an existing location.
"""
model = Location
form_class = LocationForm
template_name = "conntrackt/update_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.change_location",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
success_url = reverse_lazy("index")
def get_headline(self):
"""
Set headline based on location name.
"""
return "Update location %s" % self.object.name
class LocationDeleteView(RelatedItemsMixin, RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, DeleteView):
"""
View for deleting a location.
"""
model = Location
template_name = "conntrackt/delete_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.delete_location",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
success_url = reverse_lazy("index")
def post(self, *args, **kwargs):
"""
Add a success message that will be displayed to the user to confirm the
location deletion.
"""
messages.success(self.request, "Location %s has been removed." % self.get_object().name, extra_tags="alert alert-success")
return super(LocationDeleteView, self).post(*args, **kwargs)
def get_headline(self):
"""
Set headline based on location name.
"""
return "Delete location %s" % self.object.name
class EntityCreateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, CreateView):
"""
View for creating a new entity.
"""
model = Entity
form_class = EntityForm
headline = "Add new entity"
template_name = "conntrackt/create_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.add_entity",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_form(self, form_class=EntityForm):
"""
Returns an instance of form that can be used by the view.
The method will limit the project or location select inputs if request
contained this information.
"""
form = super(EntityCreateView, self).get_form(form_class)
# Limit the project selection if required.
project_id = self.request.GET.get("project", None)
if project_id:
form.fields["project"].queryset = Project.objects.filter(pk=project_id)
form.fields["project"].empty_label = None
# Limit the location selection if required.
location_id = self.request.GET.get("location", None)
if location_id:
form.fields["location"].queryset = Location.objects.filter(pk=location_id)
form.fields["location"].empty_label = None
return form
def get_initial(self):
"""
Returns initial values that should be pre-selected (if they were
specified through a GET parameter).
"""
initial = super(EntityCreateView, self).get_initial()
initial["project"] = self.request.GET.get("project", None)
initial["location"] = self.request.GET.get("location", None)
return initial
class EntityUpdateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, UpdateView):
"""
View for updating an existing entity.
"""
model = Entity
form_class = EntityForm
template_name = "conntrackt/update_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.change_entity",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_headline(self):
"""
Set headline based on entity name.
"""
return "Update entity %s" % self.object.name
class EntityDeleteView(RelatedItemsMixin, RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, DeleteView):
"""
View for deleting an entity.
"""
model = Entity
template_name = "conntrackt/delete_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.delete_entity",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def post(self, *args, **kwargs):
"""
Add a success message that will be displayed to the user to confirm the
entity deletion.
"""
messages.success(self.request, "Entity %s has been removed." % self.get_object().name, extra_tags="alert alert-success")
return super(EntityDeleteView, self).post(*args, **kwargs)
def delete(self, *args, **kwargs):
"""
Deletes the object. This method is overridden in order to obtain the
project ID for success URL.
@TODO: Fix this once Django 1.6 comes out with fix from ticket 19044.
"""
self.success_url = reverse("project", args=(self.get_object().project.id,))
return super(EntityDeleteView, self).delete(*args, **kwargs)
def get_headline(self):
"""
Set headline based on entity name.
"""
return "Delete entity %s" % self.object.name
class InterfaceCreateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, CreateView):
"""
View for creating a new interface.
"""
model = Interface
form_class = InterfaceForm
headline = "Add new interface"
template_name = "conntrackt/create_form.html"
# Required permissions
permissions = {
"all": ("conntrackt.add_interface",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_form(self, form_class=InterfaceForm):
"""
Returns an instance of form that can be used by the view.
The method will limit the entity select input if request contained this
information.
"""
form = super(InterfaceCreateView, self).get_form(form_class)
# Limit the entity selection if required.
entity_id = self.request.GET.get("entity", None)
if entity_id:
form.fields["entity"].queryset = Entity.objects.filter(pk=entity_id)
form.fields["entity"].empty_label = False
return form
def get_initial(self):
"""
Returns initial values that should be pre-selected (if they were
specified through a GET parameter).
"""
initial = super(InterfaceCreateView, self).get_initial()
initial["entity"] = self.request.GET.get("entity", None)
return initial
def get_success_url(self):
"""
Returns the URL to which the user should be redirected after an
interface has been created.
The URL in this case will be set to entity's details page.
"""
return reverse("entity", args=(self.object.entity.pk,))
class InterfaceUpdateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, UpdateView):
"""
View for updating an existing interface.
"""
model = Interface
form_class = InterfaceForm
template_name = "conntrackt/update_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.change_interface",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_form(self, form_class=InterfaceForm):
"""
Returns an instance of form that can be used by the view.
The method will limit the entities that can be selected for the
interface to the ones that belong to the same project as the currently
set entity.
"""
form = super(InterfaceUpdateView, self).get_form(form_class)
# Limit the entities to same project.
form.fields["entity"].queryset = Entity.objects.filter(project=self.object.entity.project)
return form
def get_success_url(self):
"""
Returns the URL to which the user should be redirected after an
interface has been updated.
The URL in this case will be set to entity's details page.
"""
return reverse("entity", args=(self.object.entity.pk,))
def get_headline(self):
"""
Set headline based on interface name.
"""
return "Update interface %s" % self.object.name
class InterfaceDeleteView(RelatedItemsMixin, RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, DeleteView):
"""
View for deleting an interface.
"""
model = Interface
template_name = "conntrackt/delete_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.delete_interface",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def post(self, *args, **kwargs):
"""
Add a success message that will be displayed to the user to confirm the
interface deletion.
"""
messages.success(self.request, "Interface %s has been removed." % self.get_object().name, extra_tags="alert alert-success")
return super(InterfaceDeleteView, self).post(*args, **kwargs)
def delete(self, *args, **kwargs):
"""
Deletes the object. This method is overridden in order to obtain the
entity ID for success URL.
@TODO: Fix this once Django 1.6 comes out with fix from ticket 19044.
"""
self.success_url = reverse("entity", args=(self.get_object().entity.id,))
return super(InterfaceDeleteView, self).delete(*args, **kwargs)
def get_headline(self):
"""
Set headline based on interface name.
"""
return "Delete interface %s" % self.object.name
class CommunicationCreateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, CreateView):
"""
View for creating a new communication.
"""
model = Communication
form_class = CommunicationForm
headline = "Add new communication"
template_name = "conntrackt/create_form.html"
# Required permissions
permissions = {
"all": ("conntrackt.add_communication",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_form(self, form_class=CommunicationForm):
"""
Returns an instance of form that can be used by the view.
The method will limit the source and destination interface selection to
interfaces belonging to the same project as provided entity ID (if any
was provided).
"""
form = super(CommunicationCreateView, self).get_form(form_class)
# Limit the interface selection based on provided source entity,
# destination entity, or project.
entity_id = self.request.GET.get("from_entity", None) or self.request.GET.get("to_entity", None)
project_id = self.request.GET.get("project", None)
if project_id:
form.fields["source"].queryset = Interface.objects.filter(entity__project=project_id)
form.fields["destination"].queryset = Interface.objects.filter(entity__project=project_id)
elif entity_id:
entity = Entity.objects.get(pk=1)
form.fields["source"].queryset = Interface.objects.filter(entity__project=entity.project)
form.fields["destination"].queryset = Interface.objects.filter(entity__project=entity.project)
return form
def get_initial(self):
"""
Returns initial values that should be pre-selected (if they were
specified through a GET parameter).
"""
initial = super(CommunicationCreateView, self).get_initial()
# If source or destination entity were specified in request, fetch the
# first interface from them and use it as initial source and destination.
from_entity = self.request.GET.get("from_entity", None)
to_entity = self.request.GET.get("to_entity", None)
if from_entity:
try:
interface = Interface.objects.filter(entity=from_entity)[0]
initial["source"] = interface.id
except IndexError:
pass
if to_entity:
try:
interface = Interface.objects.filter(entity=to_entity)[0]
initial["destination"] = interface.id
except IndexError:
pass
return initial
def get_success_url(self):
"""
Returns the URL to which the user should be redirected after a
communication has been created.
The URL will either point to value provided via GET parameter "next", or
to project page to which the communication belongs.
"""
# We must set the success URL to something first.
self.success_url = reverse("project", args=(self.object.source.entity.project.pk,))
# This will override the URL if parameter "next" was provided (from
# RedirectToNextMixin).
success_url = super(CommunicationCreateView, self).get_success_url()
return success_url
class CommunicationUpdateView(RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, UpdateView):
"""
View for updating an existing communication.
"""
model = Communication
form_class = CommunicationForm
template_name = "conntrackt/update_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.change_communication",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_form(self, form_class=CommunicationForm):
"""
Returns an instance of form that can be used by the view.
The method will limit the source and destination interfaces that can be
selected for the communication. Both will be limited to interfaces
coming from entities that belong to the same project as current
communication's source interface.
"""
form = super(CommunicationUpdateView, self).get_form(form_class)
project = self.object.source.entity.project
form.fields["source"].queryset = Interface.objects.filter(entity__project=project)
form.fields["destination"].queryset = Interface.objects.filter(entity__project=project)
return form
def get_success_url(self):
"""
Returns the URL to which the user should be redirected after a
communication has been created.
The URL will either point to value provided via GET parameter "next", or
to project page to which the communication belongs.
"""
return self.request.GET.get("next", reverse("project", args=(self.object.source.entity.project.pk,)))
def get_headline(self):
"""
Set headline based on communication.
"""
return "Update communication %s" % self.object
class CommunicationDeleteView(RelatedItemsMixin, RedirectToNextMixin, SetHeadlineMixin, MultiplePermissionsRequiredMixin, DeleteView):
"""
View for deleting an communication.
"""
model = Communication
template_name = "conntrackt/delete_form.html"
# Required permissions.
permissions = {
"all": ("conntrackt.delete_communication",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def post(self, *args, **kwargs):
"""
Add a success message that will be displayed to the user to confirm the
communication deletion.
"""
messages.success(self.request, "Communication %s has been removed." % self.get_object(), extra_tags="alert alert-success")
return super(CommunicationDeleteView, self).post(*args, **kwargs)
def delete(self, *args, **kwargs):
"""
Deletes the object. This method is overridden in order to obtain the
entity ID for success URL.
@TODO: Fix this once Django 1.6 comes out with fix from ticket 19044.
"""
entity_id = self.request.GET.get("from_entity", None) or self.request.GET.get("to_entity", None) or self.get_object().source.entity.pk
self.success_url = reverse("entity", args=(entity_id,))
return super(CommunicationDeleteView, self).delete(*args, **kwargs)
def get_headline(self):
"""
Set headline based on communication.
"""
return "Delete communication %s" % self.object
@permission_required("conntrackt.view", raise_exception=True)
def project_diagram(request, pk):
"""
Custom view that returns response containing diagram of project
communications.
The diagram will include coloured entities, with directional lines
connecting the source and destination end entities.
The output format is SVG.
Arguments:
request - Request object.
pk - Project ID for which the diagram should be generated.
Returns:
Response object that contains the project diagram rendered as SVG.
"""
# Fetch the project.
project = get_object_or_404(Project, pk=pk)
# Generate the diagram.
content = generate_project_diagram(project).create_svg()
# Set the mime type.
response = HttpResponse(content, content_type='image/svg+xml')
# Return the response object.
return response
class SearchView(MultiplePermissionsRequiredMixin, TemplateView):
"""
Custom view used for rendering the search (results) page.
"""
template_name = 'conntrackt/search.html'
# Required permissions.
permissions = {
"all": ("conntrackt.view",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get_context_data(self, **kwargs):
"""
Returns the context data that should be used for rendering of the
template.
Adds context objects:
- 'entities', which is a list of entities that had the search term in
their name or description.
- 'projects', which is a list of entities that had the search term in
their name or description.
- 'search_term', which is a string of previous query that brought the
user to page (if any). The term will be stripped from leading and
trailing spaces/tabs.
"""
# Set the context using the parent aclass.
context = super(SearchView, self).get_context_data(**kwargs)
# Retrieve the search term, and strip it if it was provided.
search_term = self.request.GET.get("q", None)
if search_term:
search_term = search_term.strip()
# Do not allow empty searches.
if search_term == "":
messages.error(self.request, "Search query is not allowed to be empty.", extra_tags="alert alert-error")
# Set-up the context objects if search was sent. Otherwise empty search
# page will be shown.
elif search_term is not None:
context['search_term'] = search_term
context['entities'] = Entity.objects.search(search_term)
context['projects'] = Project.objects.search(search_term)
return context
class APISearchView(MultiplePermissionsRequiredMixin, View):
"""
API view implementing search for entities and projects that match the
provided search term.
The output generated by the view uses JSON. The result will include a list
of matched items, where each item is a dictionary with the following keys:
- name (name of the matched item)
- project (project to which the item belongs)
- type (type of the matched item)
- url (URL towards the matched item)
"""
# Required permissions.
permissions = {
"all": ("conntrackt.view",),
}
# Raise authorisation denied exception for unmet permissions.
raise_exception = True
def get(self, request, search_term=""):
"""
Implements response handling for a GET request.
"""
# Retrieve the search term, and strip it if it was provided.
if search_term:
search_term = search_term.strip()
# Set-up a list that will contain found items.
items = []
# Fetch the maximum number of items that should be returned.
limit = int(request.GET.get("limit", 0))
if limit < 0:
raise ValidationError("Limit may not be a negative value.")
# Don't perform search with empty search term.
if search_term != "":
# Run the search on entities and projects.
entities = Entity.objects.search(search_term).select_related("project")
projects = Project.objects.search(search_term)
# If maximum number of items was provided, narrow-down the results.
if limit > 0:
entities = entities[:limit]
projects = projects[:limit]
# Add found entities.
for entity in entities:
items.append({"name": entity.name,
"project": entity.project.name,
"type": "entity",
"url": entity.get_absolute_url()})
# Add found projects.
for project in projects:
items.append({"name": project.name,
"project": project.name,
"type": "project",
"url": project.get_absolute_url()})
# Generate the JSON response.
content = json.dumps(items)
response = HttpResponse(content, content_type="application/json")
# Return the response.
return response
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