未定义的方法‘full_title’ [英] undefined method `full_title'
问题描述
我收到以下错误:
未定义的方法`full_title'在这一行:
<%= full_title(yield(:title)) %> 在我的布局文件中:
<头><title><%= full_title(yield(:title)) %></title><%= stylesheet_link_tag "application", media: "all",数据涡轮链接轨道"=>真%><%= javascript_include_tag "application", "data-turbolinks-track" =>真%><%= csrf_meta_tags %><身体><%= 渲染布局/标题"%><div class="容器"><%=产率%><%= 渲染布局/页脚"%></html>
我正在尝试使用页面标题执行类似于 Mike Hartle rails 教程的操作，但我没有使用测试.所以我没有在 spec 文件夹中创建支持文件.我实际上没有规范文件夹.我相信没有包含此代码的支持文件:
def full_title(page_title)base_title = "Ruby on Rails 教程示例应用程序"如果 page_title.empty?base_title别的#{base_title} | #{page_title}"结尾结尾导致错误.解决此问题的正确方法是您不想创建测试，因此不需要 spec 文件夹?我可以把这个代码放在哪里?
任何可直接访问视图的方法都必须转到帮助程序.
由于您尝试在布局中访问此方法，请将您的代码放在 application_helper.rb 文件中.
所有的助手都是模块.
如果您没有该文件，请在 app/helpers
module ApplicationHelperdef full_title(page_title)base_title = "Ruby on Rails 教程示例应用程序"如果 page_title.empty?base_title别的#{base_title} | #{page_title}"结尾结尾结尾然后，在 application_controller.rb 中include ApplicationHelper
I am getting the following error:
undefined method `full_title'
On this line:
<title><%= full_title(yield(:title)) %></title>
On my layouts file:
<!DOCTYPE html>
<html>
<head>
<title><%= full_title(yield(:title)) %></title>
<%= stylesheet_link_tag "application", media: "all",
"data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>
</head>
<body>
<%= render 'layouts/header' %>
<div class="container">
<%= yield %>
<%= render 'layouts/footer' %>
</div>
</body>
</html>
I am trying to do something similar to Mike Hartle rails tutorial with the page titles except I am not using tests. So I have not created a support file in the spec folder. I actually have no spec folder. I believe not having the support file with this code:
def full_title(page_title)
base_title = "Ruby on Rails Tutorial Sample App"
if page_title.empty?
base_title
else
"#{base_title} | #{page_title}"
end
end
Is causing the error. What is the proper way to fix this is you do not want to create tests and hence don't want a spec folder? Where can I put this code?
Any method accessible to the views directly has to go to the helper.
Since you are trying to access this method in your layouts, put your code in the application_helper.rb file.
All helpers are modules only.
If you don't have the file, create one in app/helpers
module ApplicationHelper
def full_title(page_title)
base_title = "Ruby on Rails Tutorial Sample App"
if page_title.empty?
base_title
else
"#{base_title} | #{page_title}"
end
end
end
Then, include ApplicationHelper in application_controller.rb
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