Question

return render_template('books.html', username=session['username'], mybooks=q)

<html>
  Welcome {{username}}

  {% for book in mybooks %}
    {% if book.author == {{username}}%}
         <p>Author: {{ book.author }}</p>
         <p>Edition: {{book.edition}}</p>
    {% endif %}
  {% endfor %}
</html>

当我尝试比较时，我不明白为什么会出现错误：

{% if book.author == {{username}}%}

错误消息：

jinja2.exceptions.TemplateSyntaxError: expected token ':', got '}'

Answer 1

不需要

{{..}}，您没有在输出中添加值。只需将直接与变量

进行比较

{% if book.author == username %}

尝试进行比较时出现语法错误

1 个答案: