如何将变量 link_to 定义为外部 URL [英] How do I defined a variable link_to to an external URL

问题描述

在我的网站上，用户拥有个人资料，其中包含指向其个人外部网站的链接.我以 website 名称存储在 postgresql 数据库中的站点的 url.当我测试结果时，我总是得到这样的网址:

On my site a user has a personal profile with a link to his personal external website. The url of the sites I store in a postgresql database under the name website. When I test the result, I always get a url like this:

http://localhost:3000/www.example.com

而不是 http://www.example.com

我的视图 index.html.erb 如下所示:

My view index.html.erb looks like this:

<% provide(:title, 'All projects') %>
<h1>All projects</h1>

<%= will_paginate %>

<ul class="microposts">
    <%= render @microposts %>
</ul>

<%= will_paginate %>

和我的 _micropost.html.erb 像这样:

<li>
    <span class="title"><%= micropost.title %></span>
    <span class="website"><%= link_to micropost.website, micropost.website %></span>
    <span class="content"><%= micropost.content %></span>
    <span class="timestamp">
        Posted <%= time_ago_in_words(micropost.created_at) %> ago.
    </span>
</li>

我不知道在这种情况下有什么问题.如果我在 micropost.website 之前设置 @，它会给我一个错误 undefined method `website' for nil:NilClass

I don't know what's the problem in this case. If I set a @ before micropost.website it gives me an error undefined method `website' for nil:NilClass

有人可以帮助我吗(我是 RoR 初学者)?

Does anyone can help me (I'm a RoR beginner)?

KR，法比安

推荐答案

听起来您存储的 URL 没有 http://，因此它们被解释为相对 URL.你只需要做这样的事情:

It sounds like you are storing URLs without the http:// so they are being interpreted as relative URLs. You just need to do something like this:

link_to micropost.website, "http://#{micropost.website}"

或者可能向该模型添加一个 full_url 方法，如果它丢失，则添加它.

or maybe add a full_url method to that model that adds it if it's missing.

顺便说一句，你不能在那个部分使用 @micropost 因为它不存在(你只有 @microposts 或 micropost代码>).

By the way, you can't use @micropost in that partial because it doesn't exist (you only have @microposts or micropost).

这篇关于如何将变量 link_to 定义为外部 URL的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！