Jinja模板块中的嵌套块和for循环 [英] nested block and for loop in a Jinja template block

问题描述

尝试在Jinja模板块设置中使用嵌套块和for循环.

Trying to use nested block and for loop in a Jinja template block setup.

{% block main %}
<table>
<tr>
<td>user id</td>
<td>user sec level</td>
</tr>
    {% block main_nested_b scoped %}
    {%
    for user in list_users:
        t_id_user = str(user[0][0])
        t_sec_level = str(user[2][0])
    %}
<tr>
<td>
<a href='/usersEdit?id_user={{ t_id_user }}' class='onwhite'>edit</a>
</td>
</tr>
    {% endfor %}
    {% endblock main_nested_b %}
{% endblock main %}
</table>

错误消息:

jinja2.exceptions.TemplateSyntaxError: expected token 'end of statement block', got 't_id_user'

帮助?

推荐答案

您不能将Jinja语法视为Python语法.这不是同一回事.将您的 for标记与

You can't treat Jinja syntax as Python syntax. It's not the same thing. Keep your for tag separate from assignment (set) tags:

    {% for user in list_users %}
        {% set t_id_user = user[0][0] %}
        {% set t_sec_level = user[2][0] %}

请注意，for ... in ...语法的末尾甚至没有:！另外，您无需在此处调用str()，将其留给Jinja即可为您转换为字符串.在任何使用{{ t_id_user }}或{{ t_sec_level }}的位置，该值将始终转换为字符串.

Note that there isn't even a : at the end of the for ... in ... syntax! Also you don't need to call str() here, leave that to Jinja to convert to strings for you; anywhere you use {{ t_id_user }} or {{ t_sec_level }} the value will be converted to a string anyway.

这是完整的模板:

<table>
{% block main %}
    {% block main_nested_b scoped %}
    {% for user in list_users %}
        {% set t_id_user = user[0][0] %}
        {% set t_sec_level = user[2][0] %}
<tr>
<td>
<a href='/usersEdit?id_user={{ t_id_user }}' class='onwhite'>edit</a>
</td>
</tr>
    {% endfor %}
    {% endblock main_nested_b %}
{% endblock main %}
</table>

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