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Create a model

To create a model (lets call it User) by running:

$ rails g model User

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which will generate the file app/models/user.rb:

class User
  include Mongoid::Document

end

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This is all we need to have a model (albeit nothing but an id field). Unlike ActiveRecord, there is no migration files. All the database information for the model is contained in the model file.
Timestamps are not automatically included in your model when we generate it. To add created_at and updated_at to our model, add

include Mongoid::Timestamps

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Our model underneath include Mongoid::Document like:

include Mongoid::Timestamps

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Ruby On Rails Basics

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