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[wolnelektury.git] / apps / ajaxable / utils.py

diff --git a/apps/ajaxable/utils.py b/apps/ajaxable/utils.py
index e32356a..02e8767 100755 (executable)
--- a/apps/ajaxable/utils.py
+++ b/apps/ajaxable/utils.py
@@ -4,7 +4,6 @@ from django.http import (HttpResponse, HttpResponseRedirect,
         HttpResponseForbidden)
 from django.shortcuts import render_to_response
 from django.template import RequestContext
-from django.utils.cache import patch_vary_headers
 from django.utils.encoding import force_unicode
 from django.utils.functional import Promise
 from django.utils.http import urlquote_plus
@@ -53,6 +52,12 @@ def require_login(request):
         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.
 
@@ -60,6 +65,7 @@ class AjaxableFormView(object):
 
     """
     form_class = None
+    placeholdize = False
     # override to customize form look
     template = "ajaxable/form.html"
     submit = _('Send')
@@ -74,7 +80,8 @@ class AjaxableFormView(object):
     @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."""
-        form_args, form_kwargs = self.form_args(request, *args, **kwargs)
+        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
 
@@ -104,6 +111,8 @@ class AjaxableFormView(object):
                 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:
@@ -114,28 +123,56 @@ class AjaxableFormView(object):
             form = self.form_class(*form_args, **form_kwargs)
             response_data = None
 
-        template = self.template if request.is_ajax() else self.full_template
+        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": self.title,
+                "title": title,
+                "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())
+        context.update(self.extra_context(request, obj))
         return render_to_response(template, context,
             context_instance=RequestContext(request))
 
-    def form_args(self, request, *args, **kwargs):
+    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):
+    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.