init

backend/events/resources.py

@@ -0,0 +1,86 @@
+from import_export import resources, fields
+from import_export.widgets import ForeignKeyWidget, ManyToManyWidget
+
+from events.models import Event, Registration
+from users.models import User
+from gallery.models import Gallery
+from payments.models import DiscountCode
+
+class EventResource(resources.ModelResource):
+    gallery_images = fields.Field(
+        column_name='gallery_images',
+        attribute='gallery_images',
+        widget=ManyToManyWidget(Gallery, field='title', separator='|')
+    )
+
+    class Meta:
+        model = Event
+        fields = (
+            'id', 'title', 'slug', 'description', 'start_time', 'end_time',
+            'event_type', 'address', 'location', 'online_link', 'status',
+            'capacity', 'price', 'registration_start_date', 'registration_end_date',
+            'featured_image', 'gallery_images', 'created_at', 'updated_at',
+            'is_deleted', 'deleted_at'
+        )
+        export_order = fields
+
+class RegistrationResource(resources.ModelResource):
+    """Export registrations with user attributes and shortened ticket identifiers."""
+
+    event = fields.Field(
+        column_name='event',
+        attribute='event',
+        widget=ForeignKeyWidget(Event, 'title')
+    )
+    user_username = fields.Field(
+        column_name='user_username',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'username')
+    )
+    user_email = fields.Field(
+        column_name='user_email',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'email')
+    )
+    user_first_name = fields.Field(
+        column_name='user_first_name',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'first_name')
+    )
+    user_last_name = fields.Field(
+        column_name='user_last_name',
+        attribute='user',
+        widget=ForeignKeyWidget(User, 'last_name')
+    )
+    discount_code = fields.Field(
+        column_name='discount_code',
+        attribute='discount_code',
+        widget=ForeignKeyWidget(DiscountCode, 'code')
+    )
+
+    class Meta:
+        model = Registration
+        fields = (
+            'id',
+            'event',
+            'user_username',
+            'user_email',
+            'user_first_name',
+            'user_last_name',
+            'registered_at',
+            'status',
+            'ticket_id',
+            'discount_code',
+            'discount_amount',
+            'final_price',
+            'created_at',
+            'updated_at',
+            'is_deleted',
+            'deleted_at',
+        )
+        export_order = fields
+
+    def dehydrate_ticket_id(self, obj):
+        """Limit ticket identifiers to eight characters in exports."""
+        val = getattr(obj, 'ticket_id', '')
+        return str(val)[:8] if val else ''