Helping template tags.

content_plugins/templatetags/content_plugin_tags.py

@@ -0,0 +1,32 @@
+from django import template
+from django.template import loader
+from django.apps import registry
+
+
+register = template.Library()
+
+
+@register.filter
+def region_contents(regions, region_key):
+    return regions._contents[region_key]
+
+
+@register.filter
+def filter_plugins(region_contents, model):
+    """
+    Usage:
+
+    {{ regions|region_conents:"article"|filter_plugins:"projects.ContributorProjectPlugin" }}
+
+    """
+    if type(model) == str:
+        model = registry.apps.get_model(model)
+
+    return [plugin.object
+        for plugin in region_contents
+        if type(plugin) == model]
+
+
+@register.filter
+def select_template(template_list):
+    return loader.select_template(template_list)