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Class: ActiveRecord::ConnectionAdapters::PostgreSQL::AlterTable

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::ActiveRecord::ConnectionAdapters::AlterTable
Instance Chain:
self, ::ActiveRecord::ConnectionAdapters::AlterTable
Inherits: ActiveRecord::ConnectionAdapters::AlterTable
Defined in: activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb

Overview

Active Record ::ActiveRecord::ConnectionAdapters::PostgreSQL Adapter Alter Table

Constant Summary

::ActiveRecord::ConnectionAdapters::AlterTable - Inherited

COMBINABLE_COMMANDS

Class Method Summary

::ActiveRecord::ConnectionAdapters::AlterTable - Inherited

.new

Instance Attribute Summary

::ActiveRecord::ConnectionAdapters::AlterTable - Inherited

#deferred_operations, #empty?, #operations

Instance Method Summary

::ActiveRecord::ConnectionAdapters::AlterTable - Inherited

#add_check_constraint, #add_column, #add_foreign_key, #add_timestamps, #change_column_default, #change_column_null, #drop_check_constraint, #drop_constraint, #drop_foreign_key, #name, #remove_check_constraint, #remove_column, #remove_columns, #remove_foreign_key, #remove_timestamps, #rename_column

Constructor Details

This class inherits a constructor from ActiveRecord::ConnectionAdapters::AlterTable

Instance Method Details

#add_column(column_name, type, **options)

[ GitHub ] 

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 416



def add_column(column_name, type, **options)
  super
  defer_comment(column_name, options[:comment]) if options.key?(:comment)
end


  








  

    #add_exclusion_constraint(expression, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 441



def add_exclusion_constraint(expression, **options)
  @operations << AddExclusionConstraint.new(@td.new_exclusion_constraint_definition(expression, options))
end


  








  

    #add_unique_constraint(column_name = nil, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 449



def add_unique_constraint(column_name = nil, **options)
  @operations << AddUniqueConstraint.new(@td.new_unique_constraint_definition(column_name, options))
end


  








  

    #change_column(column_name, type, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 421



def change_column(column_name, type, **options)
  cd = @td.new_column_definition(column_name, type, **options)
  @operations << ChangeColumnDefinition.new(cd, column_name)
  defer_comment(column_name, options[:comment]) if options.key?(:comment)
end


  








  

    #change_column_null(column_name, null, default = nil)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 427



def change_column_null(column_name, null, default = nil)
  if default.nil?
    super(column_name, null)
  else
    conn = @td.conn
    table_name = name
    @deferred_operations << -> { conn.change_column_null(table_name, column_name, null, default) }
  end
end


  








  

    #defer_comment(column_name, comment)   (private)
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 458



def defer_comment(column_name, comment)
  conn = @td.conn
  table_name = name
  @deferred_operations << -> { conn.change_column_comment(table_name, column_name, comment) }
end


  








  

    #remove_exclusion_constraint(expression = nil, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 445



def remove_exclusion_constraint(expression = nil, **options)
  drop_constraint(@td.conn.send(:exclusion_constraint_for!, name, expression: expression, **options).name)
end


  








  

    #remove_unique_constraint(column_name = nil, **options)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 453



def remove_unique_constraint(column_name = nil, **options)
  drop_constraint(@td.conn.send(:unique_constraint_for!, name, column: column_name, **options).name)
end


  








  

    #validate_constraint(name)  
  

  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb', line 437



def validate_constraint(name)
  @operations << ValidateConstraint.new(name)
end