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

Inherits:

Object

• Object
• ActiveModel::AttributeMethods::ClassMethods::AttributeMethodMatcher

show all

Defined in:

activemodel/lib/active_model/attribute_methods.rb

Defined Under Namespace

Classes: AttributeMethodMatch

Instance Attribute Summary (collapse)

• - (Object) prefix readonly

  Returns the value of attribute prefix.

• - (Object) suffix readonly

  Returns the value of attribute suffix.

Instance Method Summary (collapse)

• - (AttributeMethodMatcher) initialize(options = {}) constructor

  A new instance of AttributeMethodMatcher.

• - (Object) match(method_name)
• - (Object) method_missing_target
• - (Object) method_name(attr_name)

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 319

def initialize(options = {})
  options.symbolize_keys!
  @prefix, @suffix = options[:prefix] || '', options[:suffix] || ''
  @regex = /^(#{Regexp.escape(@prefix)})(.+?)(#{Regexp.escape(@suffix)})$/
end

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 315

def prefix
  @prefix
end

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 315

def suffix
  @suffix
end

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 325

def match(method_name)
  if matchdata = @regex.match(method_name)
    AttributeMethodMatch.new(method_missing_target, matchdata[2])
  else
    nil
  end
end

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 337

def method_missing_target
  :#{prefix}attribute#{suffix}"
end

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# File 'activemodel/lib/active_model/attribute_methods.rb', line 333

def method_name(attr_name)
  "#{prefix}#{attr_name}#{suffix}"
end