Serialization converts an object in memory into a stream of bytes that can be recreated when needed. Serializers in
Ruby on Rails convert a given object into a
Serializers control the particular attributes rendered when an object or model is converted into a JSON format.
The process is illustrated below:
To use a Serializer in your Rails project, you have to include the Serializer
gem in your
Gemfile, as shown below:
To install the Serializer module, you will need to run the following command:
Ruby on Rails, Serializers allow you to:
Consider a model,
User, with a single attribute for its name. To generate a Serializer for this model, you need to run the following command:
rails g serializer user
The above command creates the file
/app/serializers/user_serializer.rb with the following contents:
class UserSerializer < ActiveModel::Serializer attributes :name end
attributes list informs the Serializer which particular attributes to render when an object is converted to the
JSON format using the
render: json command.
If, for instance, the
User model also has attributes for
company that require rendering, you can add these to the attributes list in the file as shown below:
class UserSerializer < ActiveModel::Serializer attributes :name, :age, :company end
Once this is done, you may visit the
/user route of your
Ruby on Rails project to view the
JSON that is rendered.
Note: You can find a comprehensive guide on Serializers on the official Rails Documentation website.
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