cubicweb-conference #1381229 Add an url_id attribute to Conference to have a unique url identifier [validation pending]
Add a unique identifiant for conference entities to backport url rewriting in conference
Notes from the patch:
Modify the fsschema to avoid conflict with the two constraints unique=True and required=True (as required=True, column is filled with the same null value, so the constraint unique=True fails).
|closed by||#17c99b4077da add attribute url_id to Conference to have a unique url identifier (closes #1381229)|