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Generators

For New Resources: Rails Resources Generator

$ rails g resource post title:string body:string

This will generate a serializer at the same time in app/serializers/post_serializer.rb for your new model.

For Existing Models: Serializer Generator

$ rails g serializer post
  • Generated serializer will contain existing model's attributes and any
  • has_many, has_one and belongs_to associations in the model. For example:
class PostSerializer < ActiveModel::Serializer
  attributes :title, :body

  has_many :comments
  has_one :author
end

and

class CommentSerializer < ActiveModel::Serializer
  attributes :name, :body

  belongs_to :post_id
end
  • Attribute names are a whitelist of attributes to be serialized
  • If generated associations are left, as per default, then serializing any record (e.g. a post) will include all those associations (e.g. comments) if they

    • exist for that specific record (e.g. that post actually has any saved comment)
    • have serializers that can be found

For more information, see Serializers.

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