Laravel migration - Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails

Question

I am trying to run a migration for a table inventories that I have created with this migration:

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Answer 1

You probably have some records in the inventories table with local_id that does not have corresponding id in the contents table, hence the error. You could solve it by one of the two ways:

• Run the migration with foreign_key_checks turned off. This will disabled the foreign key constraints for the existing rows (if that's what you want). It's documented here
• Insert only those records that have corresponding id field in contents table. You can use INSERT INTO.. WHERE EXISTS query to filter the records out, and insert only those records.