Module: ApiModel::InstanceMethods

Extended by:
ActiveSupport::Concern
Included in:
Base
Defined in:
lib/api_model/instance_methods.rb

Instance Method Summary collapse

Instance Method Details

#initialize(attributes = nil) ⇒ Object 



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# File 'lib/api_model/instance_methods.rb', line 18

def initialize(attributes = nil)
  run_callbacks :initialize do
    super attributes
  end
end

#save(path, body = nil, options = {}) ⇒ Object

Sends a request to the api to update a resource. If the response was successful, then it will update the instance with any changes which the API has returned. If not, it will set ActiveModel errors.

The default request type is PUT, but you can override this by setting :request_method in the options hash.

It also includes 3 callbacks which you can hook onto; save, which is the entire method, whether the API request was successful or not, and successful_save and unsuccessful_save which are triggered on successful or unsuccessful responses.

By default it uses the ApiModel::Builder::Hash builder rather than using the normal method of using the class, or api config builders. This is to avoid building new objects from the response, but can be easily overriden by passing in :builder in the options hash.



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# File 'lib/api_model/instance_methods.rb', line 64

def save(path, body=nil, options={})
  request_method = options.delete(:request_method) || :put
  errors_root = options.delete(:json_errors_root) || self.class.api_model_configuration.json_errors_root

  run_callbacks :save do
    response = self.class.call_api_with_json request_method, path, body, options.reverse_merge(builder: ApiModel::Builder::Hash.new)
    response_success = response.http_response.api_call.success?
    error_messages = response.fetch_from_body(errors_root)

    set_errors_from_hash error_messages if error_messages.present?

    if response_success
      run_callbacks :successful_save do
        update_attributes response.response_build_hash
      end
    else
      run_callbacks :unsuccessful_save
    end

    response_success
  end
end

#set_error_on_self_or_child(field, messages, obj = self) ⇒ Object

If the field to apply errors to is another ApiModel instance, call set_errors_from_hash on it. Otherwise, go ahead and treat it as a normal ActiveModel error on the current obj instance.



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# File 'lib/api_model/instance_methods.rb', line 42

def set_error_on_self_or_child(field, messages, obj = self)
  if obj.respond_to?(field.to_sym) && obj.send(field.to_sym).respond_to?(:set_error_on_self_or_child)
    obj.send(field.to_sym).set_errors_from_hash messages
  else
    obj.errors.add obj.class.real_attribute_name_for(field.to_sym), messages
  end
end

#set_errors_from_hash(errors_hash, obj = self) ⇒ Object

Convenience method to handle error hashes and set them as ActiveModel errors on instances. Using the ‘obj`, you can move the errors on to child classes if needed.



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# File 'lib/api_model/instance_methods.rb', line 26

def set_errors_from_hash(errors_hash, obj = self)
  return false unless errors_hash.is_a? Hash

  errors_hash.each do |field,messages|
    if messages.is_a?(Array)
      messages.each do |message|
        set_error_on_self_or_child field, message, obj
      end
    else
      set_error_on_self_or_child field, messages, obj
    end
  end
end