如何在树枝上使用if else作为控制器变量

Question

我想要做的是将imageowner（控制器返回的变量）与当前用户进行比较

<!-- image remove button --> 
 {% if {{ imageOwner }} == {{ app.user.username }} %} //Line 5
    <p>You are the owner of this image</p>

    <button onclick="deleteStuff()">deleted</button>
 {% endif %}

但它会抛出此错误

A hash key must be a quoted string, a number, a name, or an expression enclosed in parentheses (unexpected token "punctuation" of value "{" inLayoutBundle:Frontpage:content-bubble.html.twig at line 5

{{imageOwner}}和{{app.user.username}}返回正确的值，我认为是语法或逻辑错误

Answer 1

使用

 {% if imageOwner  == app.user.username %} //Line 5
    <p>You are the owner of this image</p>

    <button onclick="deleteStuff()">deleted</button>
 {% endif %}

在php中，{p> {{ imageOwner }}比echo $imageOwner更为纤细。因此，当您不想打印变量时，不需要使用{{}}包装变量。