Question

How do I execute a method just before saving a model?

Like for example hashing passwords in a User Model.

@Before annotation does not seem to exist for models.

I am using PlayFramework 1.2.x

PS : I plan on using it with the CRUD Module.

Answer 1

Check out the collection of Pre* annotations in JPA. For example PrePersist and PreUpdate.

In your model, just stick the annotation you need onto the method that you want to invoke.

@PrePersist
public void hashPassword(){
    // do stuff
}

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Another option might be to override the save() method for the particular model, but I wouldn’t do that unless it’s completely necessary. I would stick to the JPA APIs if they offer a solution, but that is just my opinion.