Mysql2 ::錯誤：'where子句'中的未知列'projects.company_id'

-8

任何人都可以幫我解決這個錯誤。Mysql2 ::錯誤：'where子句'中的未知列'projects.company_id'

Mysql2::Error: Unknown column 'projects.company_id' in 'where clause': SELECT `projects`.* FROM `projects` WHERE `projects`.`company_id` = 2 ORDER BY position ASC 
    Rendered project/index.html.erb within layouts/application (22.4ms) 
Completed 500 Internal Server Error in 106ms (ActiveRecord: 89.3ms) 

ActionView::Template::Error (Mysql2::Error: Unknown column 'projects.company_id' in 'where clause': SELECT `projects`.* FROM `projects` WHERE `projects`.`company_id` = 2 ORDER BY position ASC): 
    12:  <th> Actions </th> 
    13: </tr> 
    14: 
    15: <%= @projects.each do |project| %> 
    16: <tr> 
    17:  <td><%= project.company.name if project.company %></td> 
    18:  <td><%= project.name %></td> 
    app/views/project/index.html.erb:15:in `_app_views_project_index_html_erb__831754569244709537_70147764435580' 


    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/actionpack-4.2.3/lib/action_dispatch/middleware/templates/rescues/_source.erb (8.2ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/actionpack-4.2.3/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (4.5ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/actionpack-4.2.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.0ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/actionpack-4.2.3/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within rescues/layout (58.5ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/_markup.html.erb (1.0ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.3ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.3ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/style.css.erb within layouts/inlined_string (1.1ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/console.js.erb within layouts/javascript (44.4ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/main.js.erb within layouts/javascript (0.3ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.6ms) 
    Rendered /Users/ajaysithagari/.rvm/gems/ruby-2.2.1/gems/web-console-2.2.1/lib/web_console/templates/index.html.erb (98.5ms)

來源

2015-11-18 user5575586

1）格式你的問題。 2）發佈產生錯誤的代碼。 3）發佈與此相關的螞蟻代碼（例如模型）等。 – lcguida

向我們展示您的模型。有2個模型叫做項目和公司嗎？而關係是項目有一個公司和公司有很多項目？ – Guru

請添加更多的細節，如模型關聯，可能是你沒有列「company_id」在您的項目表 –

我的猜測是你只需要將company_id字段添加到項目模型。

rails generate migration AddCompanyIdToProject company_id:integer:index 
rake db:migrate

來源

2015-11-18 09:08:49 rlarcombe

感謝您的重播...... – user5575586

確保Project表有列company_id

rails generate migration AddCompanyIdToProject company:references 
rake db:migrate

來源

2015-11-18 09:51:03 Prashant4224

謝謝重播 – user5575586

如果答案是正確的，那麼接受它。 @ user5575586 – Prashant4224

Mysql2 ::錯誤：'where子句'中的未知列'projects.company_id'

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