Question

我正在尝试使用simple_form单选按钮集合来对我的帖子进行分类，但是，似乎模型无法读取该值。

以下是代码

class CreatePosts < ActiveRecord::Migration
 def change
 create_table :posts do |t|
  t.text :content
  t.integer :category
  t.references :user, index: true, foreign_key: true
  t.references :comment

  t.timestamps null: false
end
end
end

虽然我发布了以下内容

<%= simple_form_for:post do |f| %>
   <%= f.collection_radio_buttons :category, [[1,"Joke "],[2,"Gossip "],[3,"option3 "],[4,"option4 "]], :first, :last %>
   <%= f.text_area :content  %>
   <%= f.button :submit, "Post" %>          
<% end %>

无论我点击单选按钮。结果是一样的

Post Load (12.7ms)  SELECT  "posts".* FROM "posts" ORDER BY "posts"."id" DESC LIMIT $1  [["LIMIT", 1]]
 => #<Post id: 17, content: "test again",  category: nil, user_id: 1, created_at: "2017-12-13 05:47:09", updated_at: "2017-12-13 05:47:09">

类别：无

如何通过单击单选按钮输入值？

Answer 1

您错过了<Connector port="8086" ...> <Server port="8007" shutdown="SHUTDOWN"> <Connector port="8010" protocol="AJP/1.3" redirectPort="8443" />，更改了行

带

<%= f.collection_radio_buttons :category, [[1,"Joke "],[2,"Gossip "],[3,"option3 "],[4,"option4 "], :first, :last %>

Answer 2

你的SELECT A.LASTNAME, A.FIRSTNAME, A.DATEFROM, A.DATETO, A.ROOMNUMBER, A.CITY, A.COUNTRY, A.STATUS, A.DAYS FROM (SELECT LASTNAME, FIRSTNAME, MAX(DATETO) AS MOST_RECENT_STAY FROM YOUR_TABLE GROUP BY LASTNAME, FIRSTNAME) Z INNER JOIN YOUR_TABLE A ON Z.LASTNAME = A.LASTNAME AND Z.FIRSTNAME = A.FIRSTNAME AND Z.MOST_RECENT_STAY = A.DATETO;列是整数类型所以我认为数组的secound参数应该是整数而不是字符串，让我们尝试一下。

compile 'com.google.firebase:firebase-messaging:11.6.2'

尝试使用simple_form单选按钮输入值

2 个答案: