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Class: ActiveRecord::Migration::Compatibility::V4_2

Do not use. This class is for internal use only.

Instance Method Summary

V5_0 - Inherited

#add_belongs_to

Alias for V5_0#add_reference.
#add_column, #add_reference, #create_join_table, #create_table, #compatible_table_definition

V5_1 - Inherited

#change_column, #create_table

V5_2 - Inherited

#add_timestamps, #command_recorder, #compatible_table_definition

V6_0 - Inherited

#add_belongs_to

Alias for V6_0#add_reference.
#add_reference, #compatible_table_definition

V6_1 - Inherited

#add_column, #change_column, #compatible_table_definition

V7_0 - Inherited

#add_belongs_to

Alias for V7_0#add_reference.
#add_column, #add_foreign_key, #add_index, #add_reference, #change_column, #change_column_null, #create_table, #disable_extension, #rename_table, #compatible_table_definition

V7_0::LegacyIndexName - Included

#expression_column_name?, #index_name_options, #legacy_index_name

V8_0 - Inherited

#compatible_table_definition

V8_0::RemoveForeignKeyColumnMatch - Included

#remove_foreign_key

::ActiveRecord::Migration::Current - Inherited

#change_table, #compatible_table_definition, #create_join_table, #create_table, #drop_table

Instance Method Details

#add_belongs_to(table_name, ref_name, **options)

Alias for #add_reference.

[ GitHub ] 

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 450



alias :add_belongs_to :add_reference


  








  

    #add_reference(table_name, ref_name, **options)  
    Also known as: #add_belongs_to
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 446



def add_reference(table_name, ref_name, **options)
  options[:index] ||= false
  super
end


  








  

    #add_timestamps(table_name, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 452



def add_timestamps(table_name, **options)
  options[:null] = true if options[:null].nil?
  super
end


  








  

    #compatible_table_definition(t)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 474



def compatible_table_definition(t)
  t.singleton_class.prepend(TableDefinition)
  super
end


  








  

    #index_exists?(table_name, column_name = nil, **options)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 457



def index_exists?(table_name, column_name = nil, **options)
  column_names = Array(column_name).map(&:to_s)
  options[:name] =
    if options[:name].present?
      options[:name].to_s
    else
      connection.index_name(table_name, column: column_names)
    end
  super
end


  








  

    #index_name_for_remove(table_name, column_name, options)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 479



def index_name_for_remove(table_name, column_name, options)
  index_name = connection.index_name(table_name, column_name || options)

  unless connection.index_name_exists?(table_name, index_name)
    if options.key?(:name)
      options_without_column = options.except(:column)
      index_name_without_column = connection.index_name(table_name, options_without_column)

      if connection.index_name_exists?(table_name, index_name_without_column)
        return index_name_without_column
      end
    end

    raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' does not exist"
  end

  index_name
end


  








  

    #remove_index(table_name, column_name = nil, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/migration/compatibility.rb', line 468



def remove_index(table_name, column_name = nil, **options)
  options[:name] = index_name_for_remove(table_name, column_name, options)
  super
end