Class: WebammToRails::Sources::Models::AssociationDefinition::Presenter

Inherits:
Object
  • Object
show all
Defined in:
lib/webamm_to_rails/sources/models/association_definition/presenter.rb

Constant Summary collapse

UnknownAssociationType = 
Class.new(StandardError)

Instance Method Summary collapse

Constructor Details

#initialize(table_definition:, association:) ⇒ Presenter

Returns a new instance of Presenter.



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# File 'lib/webamm_to_rails/sources/models/association_definition/presenter.rb', line 8

def initialize(table_definition:, association:)
  @table_definition = table_definition
  @association = association
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/webamm_to_rails/sources/models/association_definition/presenter.rb', line 13

def render
  assoc_definition = case @association.type
                      when 'belongs_to'
                        assoc_def = "belongs_to :#{@association.destination.underscore.singularize}"
                        assoc_def << ", optional: true" unless @association.required
                        assoc_def
                      when 'has_one'
                        "has_one :#{@association.destination.underscore.singularize}"
                      when 'has_many'
                        assoc_def = "has_many :#{@association.destination.underscore.pluralize}"
                        assoc_def << ", through: :#{@association.options.through}" if @association.options&.through.present?
                        assoc_def
                      when 'has_many_and_belongs_to_many'
                        "has_and_belongs_to_many :#{@association.destination.underscore.pluralize}"
                      else
                        raise UnknownAssociationType, @association.type
                      end

  if @association.options&.class_name.present?
    assoc_definition << ", class_name: '#{@association.options.class_name}'"
  end

  if @association.options&.foreign_key.present?
    assoc_definition << ", foreign_key: '#{@association.options.foreign_key}'"
  end

  if @association.options&.dependent.present?
    assoc_definition << ", dependent: :#{@association.options.dependent}"
  end

  assoc_definition
end