ActiveModel::Serializer::Validator

This gem adds JSON schema validations for the JSON output generated by an ActiveModel::Serializer.

Add this line to your application's Gemfile:

gem 'active_model_serializers_validator'

The gem adds two instance methods (#valid? and #errors) and one class method (.json_schema) to the ActiveModel::Serializer class.

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-03/schema",
  "id": "#",
  "required": false,
  "additionalProperties": false,
  "properties": {
    "favorite_number": {
      "type": "integer",
      "id": "favorite_number",
      "required": true
    },
  }
}

class MySerializer < ActiveModel::Serializer
  json_schema '/path/to/my/schema.jsonschema'
  attribute :favorite_number
end

object = OpenStruct.new(favorite_number: 'what?')
serializer = MySerializer.new(object)

serializer.valid?
# => false

serializer.errors
# => [The property '#/foo' of type String did not match the following type: integer in schema /path/to/my/schema.jsonschema]

ActiveModel::Serializer::Validator is © 2013-2015 Mirego and may be freely distributed under the New BSD license. See the LICENSE.md file.

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