user20230119
Undo mix ash.codegen and mix ash.migrate?
How do you undo mix ash.codegen?
I added an attribute to my resource with allow_nil? false.
I ran mix ash.codegen add_entity_path and got resource_snapshots and migrations.
I get this error when running mix ash.migrate.
17:52:16.239 [info] alter table entities
** (Postgrex.Error) ERROR 23502 (not_null_violation) column "path" of relation "entities" contains null values
I tried changing allow_nil? true and ran mix ash.codegen add_entity_path_null, but I still get the same error.
Do I just delete the last two resource_snapshots and the migrations before running mix ash.codegen again?
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zachdaniel
Correct. You can, however if you want, undo the migrations as you described. We’re working on a tool for generating migrations that can be easily “undone” with mix ash.codegen --dev that tags the migrations as dev migrations. Then you can revert the dev migrations and delete them or you can “save” them with mix ash.codegen <a summary of all the changes>.
Until then, there is a script you can use to do it based off of the git changes:
trentjones21
Ah, I figured out my problem. I need to delete the _dev.json files from the snapshots too. My problem is that I added those files to my .gitignore so it was obvious to me that they were there.
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