Class: ActiveRecord::DynamicFinderMatch

### Home Classes Methods

### In Files

- lib/active_record/dynamic_finder_match.rb

### Parent

Object

### Methods

- ::match
- ::new
- #bang?
- #creator?
- #finder?
- #instantiator?

### Files

- README.rdoc

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# ActiveRecord::DynamicFinderMatch

# Active Record Dynamic Finder Match

Refer to ActiveRecord::Base documentation for Dynamic attribute-based finders for detailed info

### Attributes

attribute_names[R]
finder[R]
instantiator[R]

### Public Class Methods

match(method) click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 8
    def self.match(method)
      finder       = :first
      bang         = false
      instantiator = nil

      case method.to_s
      when /^find_(all_|last_)?by_([_a-zA-Z]\w*)$/
        finder = :last if $1 == 'last_'
        finder = :all if $1 == 'all_'
        names = $2
      when /^find_by_([_a-zA-Z]\w*)\!$/
        bang = true
        names = $1
      when /^find_or_(initialize|create)_by_([_a-zA-Z]\w*)$/
        instantiator = $1 == 'initialize' ? :new : :create
        names = $2
      else
        return nil
      end

      new(finder, instantiator, bang, names.split('_and_'))
    end

new(finder, instantiator, bang, attribute_names) click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 31
    def initialize(finder, instantiator, bang, attribute_names)
      @finder          = finder
      @instantiator    = instantiator
      @bang            = bang
      @attribute_names = attribute_names
    end

### Public Instance Methods

bang?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 52
    def bang?
      @bang
    end

creator?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 48
    def creator?
      @finder == :first && @instantiator == :create
    end

finder?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 40
    def finder?
      @finder && !@instantiator
    end

instantiator?() click to toggle source

    # File lib/active_record/dynamic_finder_match.rb, line 44
    def instantiator?
      @finder == :first && @instantiator
    end

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