Ruby on rails 区别于<；%=&引用；及<；%&引用；当ruby与html混合时？

我正在学习Rails，我正在做一个练习，我必须在视图文件中混合一些html和ruby

在编写ruby时，“”和“”之间的主要区别是什么？

将计算并显示结果。 在这种情况下，您应该在视图中看到3

<%= something which you would like to have displayed in your view %>
<% something you would like to have hidden, 
(or something which doesn't display anything in the view) such as a
 conditional statement %>

<% if @post.nil? %>
    <%= render "nilNotify" %>
<% else %>
    <%= @post.content %>
<% end %>

将进行计算，但不会在视图中显示结果。在这种情况下，您将不会在视图中看到3。

将计算并显示结果。

<%= something which you would like to have displayed in your view %>
<% something you would like to have hidden, 
(or something which doesn't display anything in the view) such as a
 conditional statement %>

<% if @post.nil? %>
    <%= render "nilNotify" %>
<% else %>
    <%= @post.content %>
<% end %>

在这种情况下，您应该在视图中看到3

<%= something which you would like to have displayed in your view %>
<% something you would like to have hidden, 
(or something which doesn't display anything in the view) such as a
 conditional statement %>

<% if @post.nil? %>
    <%= render "nilNotify" %>
<% else %>
    <%= @post.content %>
<% end %>

将进行计算，但不会在视图中显示结果。在这种情况下，您将不会在视图中看到3。

<%= something which you would like to have displayed in your view %>
<% something you would like to have hidden, 
(or something which doesn't display anything in the view) such as a
 conditional statement %>

<% if @post.nil? %>
    <%= render "nilNotify" %>
<% else %>
    <%= @post.content %>
<% end %>


您可以添加即使使用
也要显示的内容，也可以添加即使使用
也要显示的内容