Add 'allowed blocks' property for room entry

server/book/schema/mutations.py

@@ -18,12 +18,25 @@ def newlines_to_paragraphs(text):
     return '\n'.join(paragraphs)
 
 
-def handle_content_blocks(content_data):
+ALLOWED_BLOCKS = (
+    'text_block',
+    'student_entry',
+    'image_url_block',
+    'link_block',
+    'video_block',
+    'document_block',
+)
+
+
+def handle_content_blocks(content_data, allowed_blocks=ALLOWED_BLOCKS):
     new_contents = []
 
     for content in content_data:
         # todo: add all the content blocks
         # todo: sanitize user inputs!
+        if content['type'] not in allowed_blocks:
+            continue
+
         if content['type'] == 'text_block':
             new_contents.append({
                 'type': 'text_block',