Module: AutoARRefrection

Defined in:
lib/auto_ar.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/auto_ar.rb', line 32

def self.included(base)
  base.class_eval do
    unless defined? method_missing_without_auto_ar
      alias_method_chain :method_missing, :auto_ar
    end
  end
end

Instance Method Details

#foo(parent_class, child_class) ⇒ Object 



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# File 'lib/auto_ar.rb', line 74

def foo(parent_class, child_class)
  parent_class.class_eval("has_many :#{child_class.to_s.pluralize.underscore}")
  child_class.class_eval("belongs_to :#{parent_class.to_s.singularize.underscore}")
end

#method_missing_with_auto_ar(method_sym, *args) ⇒ Object 



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# File 'lib/auto_ar.rb', line 40

def method_missing_with_auto_ar(method_sym, *args)
  begin
    method_missing_without_auto_ar(method_sym, *args)
  rescue NoMethodError => e
    method_name = method_sym.to_s
    if method_name == method_name.singularize
      f_key = method_name.singularize.foreign_key
      if self.respond_to?(f_key)
        target_klass = Object.const_get(method_name.classify)
#            target_klass.class_eval("has_many :#{self.class.to_s.pluralize.underscore.intern}")
#            self.class.class_eval("belongs_to :#{method_sym}")
        foo(target_klass, self.class)
      else
        raise NoMethodError
      end
    elsif method_name == method_name.pluralize
      table_name = method_name.tableize
      f_key = self.class.to_s.foreign_key
      conn = self.connection
      if conn.tables.include?(table_name) &&
          conn.columns(table_name).map(&:name).include?(f_key)
        target_klass = Object.const_get(method_name.classify)
        target_klass.class_eval("belongs_to :#{self.class.to_s.singularize.underscore.intern}")
        self.class.class_eval("has_many :#{method_sym}")
      else
        raise NoMethodError
      end
    else
      raise NoMethodError
    end
    self.send(method_sym, *args)
  end
end