Module: Sequel::Plugins::ClassTableInheritanceConstraintValidations

Defined in:
lib/sequel/plugins/class_table_inheritance_constraint_validations.rb

Overview

Overview

The class_table_inheritance_constraint_validations plugin extends the constraint_validations plugin to work correctly with the class_table_inheritance plugin. It ensures that constraint_validations are loaded from all tables in the class table inheritance hierarchy, not just the base table.

Example

For example, with this hierarchy, where each model has its own table with constraint validations:

    Employee
   /        \
Staff     Manager
             |
         Executive

# Loads constraint_validations from the employees table
class Employee < Sequel::Model
  plugin :class_table_inheritance
  plugin :constraint_validations
  plugin :class_table_inheritance_constraint_validations
end

# Loads constraint_validations from managers and employees tables
class Manager < Employee
end

# Loads constraint_validations from executives, managers, and
# employees tables
class Executive < Manager
end

# Loads constraint_validations from staff and employees tables
class Staff < Employee
end

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Class Method Details

.apply(model) ⇒ Object 



47
48
49
50
51
 
# File 'lib/sequel/plugins/class_table_inheritance_constraint_validations.rb', line 47

def self.apply(model)
  unless ConstraintValidations::InstanceMethods > model && ClassTableInheritance::InstanceMethods > model
    raise Error, "must load the constraint_validations and class_table_inheritance plugins into #{model} before loading class_table_inheritance_constraint_validations plugin"
  end
end