https://ruby-china.org/lyb124553153-github en-us <p>首先有个 User model</p> <pre class="highlight ruby"><code><span class="k">class</span> <span class="nc">User</span> <span class="o">&lt;</span> <span class="no">ApplicationRecord</span> <span class="k">end</span> </code></pre> <p>然后作比较的时候会发现 某条记录的 class 居然不是 User</p> <pre class="highlight ruby"><code><span class="no">User</span><span class="p">.</span><span class="nf">first</span><span class="p">.</span><span class="nf">class</span> <span class="o">===</span> <span class="no">User</span> </code></pre> <p>会返回 false</p> lyb124553153-github Fri, 27 Jul 2018 16:21:52 +0800 https://ruby-china.org/topics/37236 https://ruby-china.org/topics/37236