command to dump all xblock fields

lms/djangoapps/courseware/management/commands/dump_xblocks.py

+# pylint: disable=missing-docstring
+
+from textwrap import dedent
+
+from django.core.management.base import BaseCommand, CommandError
+from xblock.core import XBlock
+from xblock.fields import Scope
+import yaml
+
+
+class Command(BaseCommand):
+    """
+    Produce a YAML description of all XBlocks the platform knows about and their fields.
+    """
+    help = dedent(__doc__).strip()
+    option_list = BaseCommand.option_list
+
+    def handle(self, *args, **options):
+        blocks = {}
+        for block_type, block_class in XBlock.load_classes():
+            block_struct = blocks.setdefault(block_type, {})
+            block_struct['fields'] = []
+            if getattr(block_class, 'has_children', False):
+                block_struct['has_children'] = True
+            for field_name, field in block_class.fields.items():
+                if field_name == 'xml_attributes':
+                    continue
+                if field.scope == Scope.settings:
+                    block_struct['fields'].append(field_name)
+
+        return yaml.dump(blocks, default_flow_style=False)