NoMethodError（未定义方法），但是定义了类方法

Question

I have created a new class Project which is inherited from ActiveRecord::Base . I defined a class method called get_all and I would like to use in Controller but I got NoMethodError (undefined method for ...)

Model:

class Project < ActiveRecord::Base

  def self.get_all
    find(:all)
  end

end

Controller:

class Controller < ApplicationController
  unloadable

  def index
    @projects = Project.get_all
  end
end

Answer 1

Note that in rails 3 the find(:all) method ( without any options ) is deprecated in favor of the all method. More about it:

http://m.onkey.org/active-record-query-interface

Also, I don't know why are you making that function, when you could just do:

@projects = Project.all

just like chrisbulmer said.

This should work:

Project model

  def self.get_all
    Project.all
  end