Added dbtemplate validation to the class, to make sure one cannot enter invalid DBtemplates through the admin.

- Legacy-Id: 16100

ietf/dbtemplate/admin.py

@@ -5,6 +5,7 @@ from ietf.dbtemplate.models import DBTemplate
 
 class DBTemplateAdmin(admin.ModelAdmin):
     list_display = ('title', 'path',)
+    search_fields = ('title', 'path', )
     ordering = ('path', )
 
 admin.site.register(DBTemplate, DBTemplateAdmin)

ietf/dbtemplate/models.py

@@ -1,4 +1,11 @@
+# -*- coding: utf-8 -*-
+# Copyright The IETF Trust 2012-2019, All Rights Reserved
+from __future__ import unicode_literals, print_function
+
+
 from django.db import models
+from django.core.exceptions import ValidationError
+from django.template import Context
 
 from ietf.group.models import Group
 from ietf.name.models import DBTemplateTypeName
@@ -22,3 +29,18 @@ class DBTemplate(models.Model):
 
     def __unicode__(self):
         return self.title
+
+    def clean(self):
+        from ietf.dbtemplate.template import PlainTemplate, RSTTemplate, DjangoTemplate
+        try:
+            if   self.type.slug == 'rst':
+                RSTTemplate(self.content).render(Context({}))
+            elif self.type.slug == 'django':
+                DjangoTemplate(self.content).render(Context({}))
+            elif self.type.slug == 'plain':
+                PlainTemplate(self.content).render(Context({}))
+            else:
+                raise ValidationError("Unexpected DBTemplate.type.slug: %s" % self.type.slug)
+        except Exception, e:
+            raise ValidationError(e)
+