add discount restriction stacked config models

openedx/features/discounts/admin.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+"""
+Django Admin pages for DiscountRestrictionConfig.
+"""
+
+from __future__ import absolute_import, unicode_literals
+
+from django.contrib import admin
+from django.utils.translation import ugettext_lazy as _
+
+from openedx.core.djangoapps.config_model_utils.admin import StackedConfigModelAdmin
+
+from .models import DiscountRestrictionConfig
+
+
+class DiscountRestrictionConfigAdmin(StackedConfigModelAdmin):
+    """
+    Admin to configure discount restrictions
+    """
+    fieldsets = (
+        ('Context', {
+            'fields': DiscountRestrictionConfig.KEY_FIELDS,
+            'description': _(
+                'These define the context to enable lms-controlled discounts on. '
+                'If no values are set, then the configuration applies globally. '
+                'If a single value is set, then the configuration applies to all courses '
+                'within that context. At most one value can be set at a time.<br>'
+                'If multiple contexts apply to a course (for example, if configuration '
+                'is specified for the course specifically, and for the org that the course '
+                'is in, then the more specific context overrides the more general context.'
+            ),
+        }),
+        ('Configuration', {
+            'fields': ('enabled',),
+            'description': _(
+                'If any of these values is left empty or "Unknown", then their value '
+                'at runtime will be retrieved from the next most specific context that applies. '
+                'For example, if "Enabled" is left as "Unknown" in the course context, then that '
+                'course will be Enabled only if the org that it is in is Enabled.'
+            ),
+        })
+    )
+    raw_id_fields = ('course',)
+
+admin.site.register(DiscountRestrictionConfig, DiscountRestrictionConfigAdmin)