Learn Ruby on Rails

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Congratulations! You built a messaging app that uses a database to store messages. What can we generalize so far?

A model represents a table in the database.
A migration is a way to update the database with a new table, or changes to an existing table.
Rails provides seven standard controller actions for doing common things such as display and create data
Data can be displayed in the view using ERB web templating.
Data can be saved into the database using a web form.