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October 22, 2016 12:06
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to show how as_json can be used with super
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def as_json(options={}) | |
# options hash accepts four keys for better customization :only, :methods, :include, :except | |
# so whenever such keys are found, we call super with those keys to provide response consisting only those keys | |
if options.key?(:only) or options.key?(:methods) or options.key?(:include) or options.key?(:except) | |
h = super(options) | |
else | |
h = super(only: [:picture, :age], | |
methods: [:name], | |
include: {:emails => { :only => [:id, :email] }) | |
end | |
end | |
# response when no options passed: | |
# ex. render json: @user | |
# user: { | |
# picture: "url", | |
# age: "20", | |
# name: "some name", | |
# emails: [ | |
# { | |
# id: 1, | |
# email: "somename@gmail.com" | |
# }, | |
# { | |
# id: 2, | |
# email: "somename@yahoo.com" | |
# } | |
# ] | |
# } | |
# response when options passed | |
# ex: render json: @user.as_json(only: [:picture, :age], methods: [:name]) | |
# user: { | |
# picture: "url", | |
# age: "20", | |
# name: "some name" | |
# } |
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