Class: ActiveModel::AttributeMethods::ClassMethods::AttributeMethodMatcher

Inherits:
Object
  • Object
show all
Defined in:
activemodel/lib/active_model/attribute_methods.rb

Overview

:nodoc:

Defined Under Namespace

Classes: AttributeMethodMatch

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ AttributeMethodMatcher

Returns a new instance of AttributeMethodMatcher.


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 397

def initialize(options = {})
  @prefix, @suffix = options.fetch(:prefix, ''), options.fetch(:suffix, '')
  @regex = /^(?:#{Regexp.escape(@prefix)})(.*)(?:#{Regexp.escape(@suffix)})$/
  @method_missing_target = "#{@prefix}attribute#{@suffix}"
  @method_name = "#{prefix}%s#{suffix}"
end

Instance Attribute Details

#method_missing_targetObject (readonly)

Returns the value of attribute method_missing_target


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 393

def method_missing_target
  @method_missing_target
end

#prefixObject (readonly)

Returns the value of attribute prefix


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 393

def prefix
  @prefix
end

#suffixObject (readonly)

Returns the value of attribute suffix


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 393

def suffix
  @suffix
end

Instance Method Details

#match(method_name) ⇒ Object


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 404

def match(method_name)
  if @regex =~ method_name
    AttributeMethodMatch.new(method_missing_target, $1, method_name)
  end
end

#method_name(attr_name) ⇒ Object


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# File 'activemodel/lib/active_model/attribute_methods.rb', line 410

def method_name(attr_name)
  @method_name % attr_name
end

#plain?Boolean

Returns:

  • (Boolean)

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 414

def plain?
  prefix.empty? && suffix.empty?
end