fix: slug template variable (#795)

packages/core/dev-test/backends/gitlab/config.yml

@@ -71,6 +71,7 @@ collections:
     label: FAQ
     folder: _faqs
     create: true
+    media_folder: '/_faqs_images/{{slug}}'
     fields:
       - label: Question
         name: title
@@ -78,6 +79,9 @@ collections:
       - label: Answer
         name: body
         widget: markdown
+      - label: Image
+        name: image
+        widget: image
       - name: posts
         label: Posts
         label_singular: Post
@@ -475,3 +479,26 @@ collections:
               - label: File
                 name: file
                 widget: file
+  - name: pages
+    label: Nested Pages
+    label_singular: 'Page'
+    folder: _nested_pages
+    create: true
+    media_folder: '/_nested_page_pictures/{{slug}}'
+    # adding a nested object will show the collection folder structure
+    nested:
+      depth: 100 # max depth to show in the collection tree
+      summary: '{{title}}' # optional summary for a tree node, defaults to the inferred title field
+      # adding a path object allows editing the path of entries
+      # moving an existing entry will move the entire sub tree of the entry to the new location
+      path: { label: 'Path', index_file: 'index' }
+    fields:
+      - label: Title
+        name: title
+        widget: string
+      - label: Image
+        name: image
+        widget: image
+      - label: Body
+        name: body
+        widget: markdown