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Class: ActiveRecord::Associations::JoinDependency::Aliases

Do not use. This class is for internal use only.
Relationships & Source Files
Namespace Children
Classes:
Column, Table
Inherits: Object
Defined in: activerecord/lib/active_record/associations/join_dependency.rb

Class Method Summary

Instance Method Summary

Constructor Details

.new(tables) ⇒ Aliases

[ GitHub ] 

  


# File 'activerecord/lib/active_record/associations/join_dependency.rb', line 14



def initialize(tables)
  @tables = tables
  @alias_cache = tables.each_with_object({}) { |table, h|
    h[table.node] = table.columns.each_with_object({}) { |column, i|
      i[column.name] = column.alias
    }
  }
  @columns_cache = tables.each_with_object({}) { |table, h|
    h[table.node] = table.columns
  }
end


  







Instance Method Details



  

    #column_alias(node, column)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/associations/join_dependency.rb', line 34



def column_alias(node, column)
  @alias_cache[node][column]
end


  








  

    #column_aliases(node)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/associations/join_dependency.rb', line 30



def column_aliases(node)
  @columns_cache[node]
end


  








  

    #columns  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/associations/join_dependency.rb', line 26



def columns
  @tables.flat_map(&:column_aliases)
end