Change Details

**Description** For each route handler, we should correctly return NULL where that is the stored value in the DB or empty string where that value is stored. Currently, we return NULL for both NULL values and empty string. [[ https://gerrit.wikimedia.org/r/c/mediawiki/core/+/542292/1/includes/Rest/Handler/PageHistoryHandler.php#294 | See this line for reference ]] Requirements: [ ] All route handlers return empty string or NULL depending on the value stored in the DB

**Description** For each route handler, if the Comment is present we should return the stored value even if the stored value is the empty string and not return "null" in place of an empty string. Currently, we return "null" when an empty string is stored in the Comment table. [[ https://gerrit.wikimedia.org/r/c/mediawiki/core/+/542292/1/includes/Rest/Handler/PageHistoryHandler.php#294 | See this line for reference ]] Requirements: [ ] All route handlers return empty string or "null" depending on the DB contents

**Description** For each route handler, we should correctly return NULL where that is the stored value in the DB or empty string where that value is storedif the Comment is present we should return the stored value even if the stored value is the empty string and not return "null" in place of an empty string. Currently, we return NULL for both NULL values and empty string"null" when an empty string is stored in the Comment table. [[ https://gerrit.wikimedia.org/r/c/mediawiki/core/+/542292/1/includes/Rest/Handler/PageHistoryHandler.php#294 | See this line for reference ]] Requirements: [ ] All route handlers return empty string or NULL"null" depending on the value stored in the DB DB contents