Class: PGTrunk::Operations::ForeignKeys::DropForeignKey

Inherits:
Base show all
Defined in:
lib/pg_trunk/operations/foreign_keys/drop_foreign_key.rb

Instance Method Summary collapse

Methods inherited from Base

#<=>

Methods included from PGTrunk::Operation::SQLHelpers

#quote

Methods included from PGTrunk::Operation::RubyHelpers

#dump, #to_a, #to_opts, #to_ruby

Methods included from PGTrunk::Operation::Inversion

#invert!, #irreversible!

Methods included from PGTrunk::Operation::Validations

#error_messages

Methods included from PGTrunk::Operation::Attributes

#attributes, #initialize

Instance Method Details

#invert ⇒ Object 



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# File 'lib/pg_trunk/operations/foreign_keys/drop_foreign_key.rb', line 80

def invert
  irreversible!("if_exists: true") if if_exists
  AddForeignKey.new(**to_h)
end

#to_sql(_version) ⇒ Object 



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# File 'lib/pg_trunk/operations/foreign_keys/drop_foreign_key.rb', line 74

def to_sql(_version)
  sql = "ALTER TABLE #{table.to_sql} DROP CONSTRAINT"
  sql << " IF EXISTS" if if_exists
  sql << " #{name.lean.inspect};"
end