Added basic docs for entities and attributes.

[philo.git] / templatetags / embed.py

diff --git a/templatetags/embed.py b/templatetags/embed.py
index 901e163..eb4cd68 100644 (file)
--- a/templatetags/embed.py
+++ b/templatetags/embed.py
@@ -65,6 +65,9 @@ def get_embed_dict(embed_list, context):
        embeds = {}
        for e in embed_list:
                ct = e.get_content_type(context)
+               if ct is None:
+                       # Then the embed doesn't exist for this context.
+                       continue
                if ct not in embeds:
                        embeds[ct] = [e]
                else:
@@ -143,7 +146,6 @@ class ConstantEmbedNode(template.Node):
                        self.template = None
        
        def compile_instance(self, object_pk):
-               self.object_pk = object_pk
                model = self.content_type.model_class()
                try:
                        return model.objects.get(pk=object_pk)
@@ -207,17 +209,13 @@ class ConstantEmbedNode(template.Node):
                try:
                        t = context.render_context[EMBED_CONTEXT_KEY].get_embed_template(self, context)
                except (KeyError, IndexError):
-                       if settings.TEMPLATE_DEBUG:
-                               raise
                        self.mark_rendered_for(context)
                        return settings.TEMPLATE_STRING_IF_INVALID
                
                context.push()
                context['embedded'] = instance
-               kwargs = {}
                for k, v in self.kwargs.items():
-                       kwargs[k] = v.resolve(context)
-               context.update(kwargs)
+                       context[k] = v.resolve(context)
                t_rendered = t.render(context)
                context.pop()
                self.mark_rendered_for(context)
@@ -263,7 +261,10 @@ class InstanceEmbedNode(EmbedNode):
                return self.instance.resolve(context)
        
        def get_content_type(self, context):
-               return ContentType.objects.get_for_model(self.get_instance(context))
+               instance = self.get_instance(context)
+               if not instance:
+                       return None
+               return ContentType.objects.get_for_model(instance)
 
 
 def get_embedded(self):
@@ -273,15 +274,15 @@ def get_embedded(self):
 setattr(ConstantEmbedNode, LOADED_TEMPLATE_ATTR, property(get_embedded))
 
 
-def get_content_type(bit):
+def parse_content_type(bit, tagname):
        try:
                app_label, model = bit.split('.')
        except ValueError:
-               raise template.TemplateSyntaxError('"%s" template tag expects the first argument to be of the form app_label.model' % tag)
+               raise template.TemplateSyntaxError('"%s" template tag expects the first argument to be of the form app_label.model' % tagname)
        try:
                ct = ContentType.objects.get(app_label=app_label, model=model)
        except ContentType.DoesNotExist:
-               raise template.TemplateSyntaxError('"%s" template tag requires an argument of the form app_label.model which refers to an installed content type (see django.contrib.contenttypes)' % tag)
+               raise template.TemplateSyntaxError('"%s" template tag requires an argument of the form app_label.model which refers to an installed content type (see django.contrib.contenttypes)' % tagname)
        return ct
 
 
@@ -298,7 +299,7 @@ def do_embed(parser, token):
                raise template.TemplateSyntaxError('"%s" template tag must have at least two arguments.' % tag)
        
        if len(bits) == 3 and bits[-2] == 'with':
-               ct = get_content_type(bits[0])
+               ct = parse_content_type(bits[0], tag)
                
                if bits[2][0] in ['"', "'"] and bits[2][0] == bits[2][-1]:
                        return ConstantEmbedNode(ct, template_name=bits[2])
@@ -321,7 +322,7 @@ def do_embed(parser, token):
                return InstanceEmbedNode(instance, kwargs)
        elif len(bits) > 2:
                raise template.TemplateSyntaxError('"%s" template tag expects at most 2 non-keyword arguments when embedding instances.')
-       ct = get_content_type(bits[0])
+       ct = parse_content_type(bits[0], tag)
        pk = bits[1]
        
        try: