Class: Dbee::Dsl::AssociationBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/dbee/dsl/association_builder.rb

Overview

This is really syntactic sugar built on top of Association. It can handle two main use-cases when declaring associations:

  • parent: create an association to a parent model (foreign key is on immediate table)

  • child: create an association to a child model (foreign key is on child table)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(inflector) ⇒ AssociationBuilder

Returns a new instance of AssociationBuilder.

Raises:

  • (ArgumentError) 


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# File 'lib/dbee/dsl/association_builder.rb', line 19

def initialize(inflector)
  raise ArgumentError, 'inflector is required' unless inflector

  @inflector = inflector

  freeze
end

Instance Attribute Details

#inflector ⇒ Object (readonly)

Returns the value of attribute inflector.



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# File 'lib/dbee/dsl/association_builder.rb', line 17

def inflector
  @inflector
end

Instance Method Details

#child_association(on_class_name, name, opts = {}) ⇒ Object 



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# File 'lib/dbee/dsl/association_builder.rb', line 36

def child_association(on_class_name, name, opts = {})
  reference_constraint = {
    name: opts[:foreign_key] || inflector.foreign_key(on_class_name),
    parent: opts[:primary_key] || :id
  }

  association(on_class_name, name, opts, reference_constraint)
end

#parent_association(on_class_name, name, opts = {}) ⇒ Object 



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# File 'lib/dbee/dsl/association_builder.rb', line 27

def parent_association(on_class_name, name, opts = {})
  reference_constraint = {
    name: opts[:foreign_key] || :id,
    parent: opts[:primary_key] || inflector.foreign_key(name)
  }

  association(on_class_name, name, opts, reference_constraint)
end