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In some Rails model definitions, there is a comment block at the top that contains the schema information.
# == Schema Information # Schema version: 20090122060318 # # Table name: table_name # # id :integer(4) not null, primary key ... When does this get updated? Is it only generated once, when you use the generator script to create the model? Is there a way to update this block when migrations are performed?
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The schema. rb serves mainly two purposes: It documents the final current state of the database schema. Often, especially when you have more than a couple of migrations, it's hard to deduce the schema just from the migrations alone.
What are models? In simple terms, models are Ruby classes that can holds value of a single row in a database table. Since they all inherit ActiveRecord::Base through ApplicationRecord class, they are equipped with all the ActiveRecord methods which enables them to interact with the database.
Seems like output of the annotate_models plugin. Just install it and run annotate in your rails root and the schema information will update automatically. Ideally, run it after each migration.
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You could also use the annotate-models gem. It's a bit less intrusive as there's no plugin needed.
Usage:
% gem install annotate % annotate Annotated Product, User, Role If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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