+++ /dev/null
-# -*- coding: utf-8 -*-
-# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
-#
-from functools import wraps
-
-from django.http import (HttpResponse, HttpResponseRedirect,
- HttpResponseForbidden)
-from django.shortcuts import render_to_response
-from django.template import RequestContext
-from django.utils.encoding import force_unicode
-from django.utils.functional import Promise
-from django.utils.http import urlquote_plus
-import json
-from django.utils.translation import ugettext_lazy as _
-from django.views.decorators.vary import vary_on_headers
-from honeypot.decorators import verify_honeypot_value
-
-
-class LazyEncoder(json.JSONEncoder):
- def default(self, obj):
- if isinstance(obj, Promise):
- return force_unicode(obj)
- return obj
-
-
-def method_decorator(function_decorator):
- """Converts a function decorator to a method decorator.
-
- It just makes it ignore first argument.
- """
- def decorator(method):
- @wraps(method)
- def wrapped_method(self, *args, **kwargs):
- def function(*fargs, **fkwargs):
- return method(self, *fargs, **fkwargs)
- return function_decorator(function)(*args, **kwargs)
- return wrapped_method
- return decorator
-
-
-def require_login(request):
- """Return 403 if request is AJAX. Redirect to login page if not."""
- if request.is_ajax():
- return HttpResponseForbidden('Not logged in')
- else:
- return HttpResponseRedirect('/uzytkownicy/zaloguj')# next?=request.build_full_path())
-
-
-def placeholdized(form):
- for field in form.fields.values():
- field.widget.attrs['placeholder'] = field.label
- return form
-
-
-class AjaxableFormView(object):
- """Subclass this to create an ajaxable view for any form.
-
- In the subclass, provide at least form_class.
-
- """
- form_class = None
- placeholdize = False
- # override to customize form look
- template = "ajaxable/form.html"
- submit = _('Send')
-
- title = ''
- success_message = ''
- POST_login = False
- formname = "form"
- form_prefix = None
- full_template = "ajaxable/form_on_page.html"
- honeypot = False
-
- @method_decorator(vary_on_headers('X-Requested-With'))
- def __call__(self, request, *args, **kwargs):
- """A view displaying a form, or JSON if request is AJAX."""
- obj = self.get_object(request, *args, **kwargs)
- form_args, form_kwargs = self.form_args(request, obj)
- if self.form_prefix:
- form_kwargs['prefix'] = self.form_prefix
-
- if request.method == "POST":
- if self.honeypot:
- response = verify_honeypot_value(request, None)
- if response:
- return response
-
- # do I need to be logged in?
- if self.POST_login and not request.user.is_authenticated():
- return require_login(request)
-
- form_kwargs['data'] = request.POST
- form = self.form_class(*form_args, **form_kwargs)
- if form.is_valid():
- add_args = self.success(form, request)
- response_data = {
- 'success': True,
- 'message': self.success_message,
- 'redirect': request.GET.get('next')
- }
- if add_args:
- response_data.update(add_args)
- if not request.is_ajax() and response_data['redirect']:
- return HttpResponseRedirect(urlquote_plus(
- response_data['redirect'], safe='/?=&'))
- elif request.is_ajax():
- # Form was sent with errors. Send them back.
- if self.form_prefix:
- errors = {}
- for key, value in form.errors.items():
- errors["%s-%s" % (self.form_prefix, key)] = value
- else:
- errors = form.errors
- response_data = {'success': False, 'errors': errors}
- else:
- response_data = None
- if request.is_ajax():
- return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
- else:
- if (self.POST_login and not request.user.is_authenticated()
- and not request.is_ajax()):
- return require_login(request)
-
- form = self.form_class(*form_args, **form_kwargs)
- response_data = None
-
- title = self.title
- if request.is_ajax():
- template = self.template
- else:
- template = self.full_template
- cd = self.context_description(request, obj)
- if cd:
- title += ": " + cd
- if self.placeholdize:
- form = placeholdized(form)
- context = {
- self.formname: form,
- "title": title,
- "honeypot": self.honeypot,
- "placeholdize": self.placeholdize,
- "submit": self.submit,
- "response_data": response_data,
- "ajax_template": self.template,
- "view_args": args,
- "view_kwargs": kwargs,
- }
- context.update(self.extra_context(request, obj))
- return render_to_response(template, context,
- context_instance=RequestContext(request))
-
- def redirect_or_refresh(self, request, path, message=None):
- """If the form is AJAX, refresh the page. If not, go to `path`."""
- if request.is_ajax():
- output = "<script>window.location.reload()</script>"
- if message:
- output = "<div class='normal-text'>" + message + "</div>" + output
- return HttpResponse(output)
- else:
- return HttpResponseRedirect(path)
-
- def get_object(self, request, *args, **kwargs):
- """Override to parse view args and get some associated data."""
- return None
-
- def form_args(self, request, obj):
- """Override to parse view args and give additional args to the form."""
- return (), {}
-
- def extra_context(self, request, obj):
- """Override to pass something to template."""
- return {}
-
- def context_description(self, request, obj):
- """Description to appear in standalone form, but not in AJAX form."""
- return ""
-
- def success(self, form, request):
- """What to do when the form is valid.
-
- By default, just save the form.
-
- """
- return form.save(request)
fnp / wolnelektury.git / blobdiff