顯示相關模型的內容

我在第一次認真地嘗試Rails應用程序，並且遇到了一些麻煩。顯示相關模型的內容

我有兩種模式，一種叫LegalForm，另一種叫Question。一個包含不同形式的列表，另一個包含與每個形式相關的問題。或者，正如我在legal_form.rb

class LegalForm < ActiveRecord::Base 
    has_many :questions 
end

已經指出每個數據庫表設置如下：

mysql> select * from questions; 
+----+--------------+-----------------+---------------+---------------------------------------------------------------------+---------------------+---------------------+ 
| id | legalform_id | question_number | question_type | the_question              | created_at   | updated_at   | 
+----+--------------+-----------------+---------------+---------------------------------------------------------------------+---------------------+---------------------+ 
| 1 |   1 |    1 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 2 |   1 |    2 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 3 |   1 |    3 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 4 |   1 |    4 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 5 |   1 |    5 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 6 |   1 |    6 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 7 |   1 |    7 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 8 |   1 |    8 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 9 |   1 |    9 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
| 10 |   1 |    10 | lorem   | lorem ipsum dolor sit amet consectetuer adipiscing elit proin risus | 2014-11-20 21:27:04 | 2014-11-20 21:27:04 | 
+----+--------------+-----------------+---------------+---------------------------------------------------------------------+---------------------+---------------------+ 
10 rows in set (0.00 sec) 

mysql> select * from legal_forms;                                     
+----+------------+---------+---------------------+---------------------+                           
| id | title  | company | created_at   | updated_at   |                           
+----+------------+---------+---------------------+---------------------+ 
| 1 | First_Form |  1 | 2014-11-20 20:58:53 | 2014-11-20 20:58:53 | 
+----+------------+---------+---------------------+---------------------+

我想怎麼辦是顯示問題1 10，如上所述，在legal_forms的顯示視圖中。

爲此，我已經設置了我的legal_forms_controller.rb如下：

class LegalFormsController < ApplicationController 
    def index 
@legal_forms=LegalForm.all 
    end 

    def ufilter 
    end 

    def own 
    end 

    def show 
@legalform = LegalForm.find(params[:id]) 
@questions = @legalform.questions 
    end 

    private 
    def legal_forms_params 
params.require(:legalform).permit(:title, :company) 
    end 
end

，並建立了我的show.html.erb文件是這樣的：

<h1>LegalForms#show</h1> 
<p>Find me in app/views/legal_forms/show.html.erb</p> 
<% @questions.each do |question| %> 
<span><%= question.the_question %> </span> 
<% end %>

然而，當我瀏覽網頁在localhost:3000/legal_forms/1，我面臨以下錯誤：

ActiveRecord::StatementInvalid in LegalForms#show Mysql2::Error: Unknown column 'questions.legal_form_id' in 'where clause': SELECT questions .* FROM questions WHERE questions . legal_form_id = 1

錯誤消息將循環中的問題（在給出sql錯誤的情況下有意義）引腳。我清楚地明白了這裏的一些錯誤想法。任何幫助正確的軌道將不勝感激。

來源

2014-11-21 neanderslob