Class: IronTrail::Reflection

Inherits:
ActiveRecord::Reflection::AssociationReflection
  • Object
show all
Defined in:
lib/iron_trail/reflection.rb

Instance Method Summary collapse

Instance Method Details

#association_class ⇒ Object 



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# File 'lib/iron_trail/reflection.rb', line 7

def association_class
  ::IronTrail::Association
end

#collection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/iron_trail/reflection.rb', line 5

def collection? = true

#join_scope(table, foreign_table, _foreign_klass) ⇒ Object 



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# File 'lib/iron_trail/reflection.rb', line 11

def join_scope(table, foreign_table, _foreign_klass)
  scope = klass_join_scope(table, nil)

  foreign_key_column_names = Array(join_foreign_key)
  if foreign_key_column_names.length > 1
    raise "IronTrail does not support composite foreign keys (got #{foreign_key_column_names})"
  end

  foreign_key_column_name = foreign_key_column_names.first

  # record_id is always of type text, but the foreign table primary key
  # could be anything (int, uuid, ...), so let's cast it to text.
  foreign_value = ::Arel::Nodes::NamedFunction.new(
    'CAST',
    [
      ::Arel::Nodes::As.new(
        foreign_table[foreign_key_column_name],
        ::Arel::Nodes::SqlLiteral.new('text')
      )
    ]
  )

  scope.where!(
    table['rec_id']
      .eq(foreign_value)
      .and(
        table['rec_table']
        .eq(foreign_table.name)
      )
  )

  scope
end