Class: Rulz::Attribute::Condition

Inherits:
Object
  • Object
show all
Defined in:
lib/rulz/attribute.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, attr, name, proc) ⇒ Condition

Returns a new instance of Condition.



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# File 'lib/rulz/attribute.rb', line 22

def initialize(klass, attr, name, proc)
  @name = name
  @proc = proc
  klass.instance_exec self do |condition|
    conditions = instance_variable_get("@rulz_#{attr}_conditions") || []
    conditions << condition
    instance_variable_set("@rulz_#{attr}_conditions", conditions) 
  end        
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rulz/attribute.rb', line 21

def name
  @name
end

#proc ⇒ Object (readonly)

Returns the value of attribute proc.



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# File 'lib/rulz/attribute.rb', line 21

def proc
  @proc
end

Class Method Details

.find(klass, attr, name) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/rulz/attribute.rb', line 32

def self.find(klass, attr, name)
  result = klass.instance_variable_get("@rulz_#{attr}_conditions").find {|c| c.name == name }
  raise ArgumentError, "Condition '#{name}' for '#{attr}' does not exist" unless result
  result
end