Fix Language foreign key column lengths #5623
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And... of course I should have rerun the tests after rebasing... |
When Language.id was changed from max_length=7 to max_length=14 in migration 0081, Django 1.9 did not cascade the primary key column size change to foreign key and many-to-many junction table columns. This migration fixes those columns for databases that were created before the migration squash. It is idempotent - columns that are already varchar(14) are not modified. Fixes: contentcuration_channel.language_id Fixes: contentcuration_channel_included_languages.language_id Fixes: contentcuration_contentnode.language_id Fixes: contentcuration_file.language_id Adds migration test that deliberately corrupts the DB columns then runs the migration and confirms the fix.
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Summary
When Language.id was changed from max_length=7 to max_length=14 in migration 0081, Django 1.9 did not cascade the primary key column size change to foreign key and many-to-many junction table columns.
This migration fixes those columns for databases that were created before the migration squash. It is idempotent - columns that are already varchar(14) are not modified.
Fixes: contentcuration_channel.language_id
Fixes: contentcuration_channel_included_languages.language_id
Fixes: contentcuration_contentnode.language_id
Fixes: contentcuration_file.language_id
Adds migration test that deliberately corrupts the DB columns then runs the migration and confirms the fix.
References
Fixes #5618
Reviewer guidance
Because of our migration squashing, the bug is not extant on development machines, so coercing the database column length manually and then running the migration to ensure the change in the migration test was the best I could do here.
🤖 This was created by Claude Code. @rtibbles then reviewed the generated output, and made updates before making it ready for review 🤖