Rails update attributes not updating

12-Dec-2019 12:40 by 4 Comments

Rails update attributes not updating

For me a similar error was: with update_attributes it runs all ‘before_save’ filters before actually updating–I had a filter that was nuking the very attribute I was trying to change [by calling reload].Hi, I am trying to find a way tp update attributes in a habtm association.

In fact, rich associations (habtm with attributes) have been deprecated and won't be supported at all come 2.0 release. Correct me if I'm wrong, but these are technically called "polymorphic joins" aren't they?

This blog post describes how to use Value Objects backed by Rails' Active Record.

As soon as you allow users to enter data into your system, you need to validate the input to ensure that the saved data is consistent.

It also has a Model class, which habtm join tables don't, so its table name corresponds to its model name in the usual fashion, rather than being constructed from names of the tables it is joining.

You can use polymorphic associations in a join model, but it gets tricky. Like I said, the real goal of my email was to make sure we're all using the same (or mostly the same) vocab, especially when talking about some of the more involved Rails concepts/features.

In order to do this, you should not rely on your local development machine but use a staging server that mimics the production environment as closely as possible.

Besides clicking through the whole application, you should: If you have followed the steps above, there is a good chance the final deployment works smoothly.While the rails team already does a great job in keeping the updates as simple as possible and explaining the required changes, the update still requires a lot of effort in bigger applications.Furthermore, if the application that you are working on is still under development, you have to coordinate the update with the other changes to avoid one large pull request that potentially has multiple merge conflicts and is hard to review.-Brian _______________________________________________ Rails mailing list [hidden email] Brian, I don't think Henrik was talking about polymorphism.The usual habtm join table has nothing to do with polymorphism, and I'm not sure how to make it work with polymorphic associations anyway. In Rails parlance a "join model" is a join table that has been promoted to full model status by adding a primary key and probably other attribute fields as well.To unsubscribe from this group, send email to rubyonrails-talk [email protected]

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