gem Faker添加方法

Question

我正在播种一些帖子(seeds.rb)。但是我想在Faker中本地添加一个方法(past_week)。我收到了一个错误

seeds.rb

Post.create(
    :title => Faker::Lorem.words(4),
    :content => Faker::Lorem.paragraph(2)
    :created_at => Faker::Date.past_week
    )

faker.rb (在我的~/.rvm/gems/ruby-2.1.0/faker1-3-0中

require 'time'
require 'date'
require 'faker/date'

在我的date.rb中(在我的~/.rvm/gems/ruby-2.1.0/faker1-3-0/lib中

module Faker
  class Date < Base
    class << self
      def past_week
        #return a random day in the past 7 days
        today = Date.today
        today = today.downto(today - 7).to_a
        today.shuffle[0]

      end
    end
  end
end

我的错误

NoMethodError: undefined method `today' for Faker::Date:Class
/home/userlaptop/.rvm/gems/ruby-2.1.0/gems/faker-1.3.0/lib/faker.rb:138:in `method_missing'
/home/userlaptop/.rvm/gems/ruby-2.1.0/gems/faker-1.3.0/lib/faker/date.rb:5:in `past_week'
/home/userlaptop/development/public/project/jed/db/seeds.rb:21:in `<top (required)>'

Answer 1

因为您已经将类命名为Date，所以找不到today，因为您没有定义该方法。为了引用ruby Date类，需要在该类前面加上一个作用域解析运算符：

module Faker
  class Date < Base
    class << self
      def past_week
        #return a random day in the past 7 days
        today = ::Date.today
        today = today.downto(today - 7).to_a
        today.shuffle[0]

      end
    end
  end
end