Changing enum value in Rails without saving model

Question

How do I change an enum value without saving the model to the database yet?

The documentation for ActiveRecord::Enum indicates that methods like conversation.active! and conversation.status = "archived" is equivalent to doing conversation.update! status: 1, whereas I'm getting attributes from a simple_form form, and I don't want to save the model until all of the attributes have been set, as otherwise the model won't be valid.

score 8 · Accepted Answer · answered Aug 25 '15 at 01:26

8

The bang version of the method - conversation.active! will save to the database immediately.

The other way - conversation.status = "archived" will not, and will require an explicit conversation.save! afterwards. So, that's the method you're after.

(BTW, the rails console is really handy for testing stuff like this, and will even show you the exact sql that gets executed with the bang version of the method, as you execute it)

answered Aug 25 '15 at 01:26

joshua.paling

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So it is! So the comment in the documentation saying `# conversation.update! status: 1` is incorrect? – Andrew Grimm Aug 25 '15 at 01:29
Yeah. You'd have to do `conversation.status = "archived"; conversation.save!` – joshua.paling Aug 25 '15 at 01:36

Changing enum value in Rails without saving model

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