module Rein::Constraint::Match
This module contains methods for defining regex match constraints.
Constants
- OPERATORS
Public Instance Methods
add_match_constraint(*args)
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# File lib/rein/constraint/match.rb, line 14 def add_match_constraint(*args) reversible do |dir| dir.up { _add_match_constraint(*args) } dir.down { _remove_match_constraint(*args) } end end
remove_match_constraint(*args)
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# File lib/rein/constraint/match.rb, line 21 def remove_match_constraint(*args) reversible do |dir| dir.up { _remove_match_constraint(*args) } dir.down { _add_match_constraint(*args) } end end
Private Instance Methods
_add_match_constraint(table, attribute, options = {})
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# File lib/rein/constraint/match.rb, line 30 def _add_match_constraint(table, attribute, options = {}) name = Util.constraint_name(table, attribute, 'match', options) table = Util.wrap_identifier(table) attribute = Util.wrap_identifier(attribute) conditions = OPERATORS.slice(*options.keys).map do |key, operator| value = options[key] [attribute, operator, "'#{value}'"].join(' ') end.join(' AND ') conditions = Util.conditions_with_if(conditions, options) sql = "ALTER TABLE #{table} ADD CONSTRAINT #{name} CHECK (#{conditions})" execute(Util.add_not_valid_suffix_if_required(sql, options)) end
_remove_match_constraint(table, attribute, options = {})
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# File lib/rein/constraint/match.rb, line 43 def _remove_match_constraint(table, attribute, options = {}) name = Util.constraint_name(table, attribute, 'match', options) table = Util.wrap_identifier(table) execute("ALTER TABLE #{table} DROP CONSTRAINT #{name}") end