Rails: get all field for an object coming from the database

Question

Let's say I have an Foo ActiveRecord model with fields foo_id, foo_name and foo_description.

After doing something like

@foo = Foo.find(1)

Is there any method "model_fields" such that: @foo.model_fields() would return the array:

["foo_id", "foo_name", "foo_description"] ?

Thanks for the help.

Answer 1

There is an attributes method that give a hash of field and values. So you could use

@foo.attributes.keys

To get an array of the fields on the model.

There's also a Foo.column_names class method that gives you the same information without having to look up a record first.

Documentation for:
ActiveRecord::Base.column_names
ActiveRecord::Base#attributes