Question

在我的应用程序中，用户必须填写他们的门牌号码。这是通过simple_form gem完成的，但每次我点击提交时都说门牌号不能为空。这意味着不会提交字段值。怎么样？

Schema.rb

t.integer "house_number"

Simpleform

<%= f.input :house_number %>

模型

validates :house_number, presence: true, numericality: :integer, allow_blank: false

修改

我删除了allow_blank，因为它看似多余。它仍然无法正常工作。请求日志发布在下面。

Started POST "/postcodes" for 127.0.0.1 at 2014-02-04 16:28:14 +0100
Processing by PostcodesController#create as HTML
  Parameters: 
{"utf8"=>"✓", 
"authenticity_token"=>"0POd0L1b81uY1nSgW6b5NHLdG5KRkA0bUB4p7wwJhxk=", 
"postcode"=>  {"zipcode"=>"1234aa", "house_number"=>"2", "street_name"=>"", "city"=>""},   "commit"=>"Submit"}
Unpermitted parameters: house_number
   (0.4ms)  BEGIN
   (0.3ms)  ROLLBACK
  Rendered postcodes/_form.html.erb (18.0ms)
  Rendered postcodes/new.html.erb within layouts/application (18.7ms)
Completed 200 OK in 35ms (Views: 28.1ms | ActiveRecord: 0.7ms)

Answer 1

请使用：

validates :house_number, presence: true, numericality: :integer

Answer 2

看着日志，我看到我忘了添加了house_number到强大的参数！

整数字段值未提交（简单格式）

2 个答案: