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I wrote a little module that provides a form and does some special processing of the submission. There are no database tables involved. If I change the form or processing, how do I code the update? Do I still use hook_update_N if the module update doesn't affect the database?

Thanks!

6

If the changes are just code, (not db schema changes, content changes, variable changes, data changes in general), then you don't need an update hook, no.

Basic rule of thumb: will your code updates break anything for existing or new users? If not, you don't need an update hook.

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