Activerecord RSpec和活动记录验证

我试图验证一部电影的评级是否大于0且小于或等于5，为此，我在RSpec中使用了“be_valid”，当我检查电影标题是否为零时，它似乎起作用，但对评级不起作用

我不明白为什么

型号：

class Movie < ApplicationRecord
  validates :title, presence: true
  validates :rating, presence: true, numericality: { greater_than_or_equal_to: 0,less_than_or_equal_to: 5,  only_integer: true }
end

错误：

Movie
  title must be present
  rating must be greater than 0 (FAILED - 1)
  rating must be less than or equal to 5 (FAILED - 2)

Failures:

  1) Movie rating must be greater than 0
     Failure/Error: expect(subject.rating).to be_valid
     
     NoMethodError:
       undefined method `valid?' for 1:Integer
     # ./spec/models/movie_spec.rb:15:in `block (2 levels) in <top (required)>'

  2) Movie rating must be less than or equal to 5
     Failure/Error: expect(rating).to be_valid
     
     NameError:
       undefined local variable or method `rating' for #<RSpec::ExampleGroups::Movie:0x00007f8332f46fc0>
     # ./spec/models/movie_spec.rb:20:in `block (2 levels) in <top (required)>'

电影
标题必须存在
评级必须大于0（失败-1）
额定值必须小于或等于5（失败-2）
失败：
1） 电影分级必须大于0
失败/错误：预期（受试者评级）。有效
命名错误：
1:整数的未定义方法“valid”
#./spec/models/movie_spec.rb:15:in'block（2层）in'
2） 电影分级必须小于或等于5
失败/错误：预期（评级）。有效
名称错误：
未定义的局部变量或方法“评级”#
#./spec/models/movie_spec.rb:20:in'block（2层）in'

您应该使用

expect（subject.）。在其他两个测试用例中有效。您得到错误是因为您试图验证
subject.rating
这是一个整数。
您应该使用
expect（subject.），以便在其他两个测试用例中有效。您得到错误是因为您试图验证
subject.rating
这是一个整数

Movie
  title must be present
  rating must be greater than 0 (FAILED - 1)
  rating must be less than or equal to 5 (FAILED - 2)

Failures:

  1) Movie rating must be greater than 0
     Failure/Error: expect(subject.rating).to be_valid
     
     NoMethodError:
       undefined method `valid?' for 1:Integer
     # ./spec/models/movie_spec.rb:15:in `block (2 levels) in <top (required)>'

  2) Movie rating must be less than or equal to 5
     Failure/Error: expect(rating).to be_valid
     
     NameError:
       undefined local variable or method `rating' for #<RSpec::ExampleGroups::Movie:0x00007f8332f46fc0>
     # ./spec/models/movie_spec.rb:20:in `block (2 levels) in <top (required)>'