python - 将模板字符串传递给 Jinja 宏

Question

我想从宏中渲染模板字符串。我尝试使用以下使用 {{ comment|safe }} 呈现模板的宏来完成此操作，但呈现了模板中的变量，例如 {{ name }}从字面上代替 name 的值。如何在宏参数中允许变量数据？

{% macro comment_el(image_url, name, comment) %}
  <div class="media no-border-top">
    <div class="media-left">
      <a href="{{ outgoing_url }}" >
        <img class="media-object" src="{{ image_url }}" />
      </a>
    </div>
    <div class="media-body">
      <h4 class="media-heading"><a href="{{ outgoing_url }}" >{{ name }}</a></h4>
      <p>{{ comment|safe }}</p>
    </div>
  </div>
{% endmacro %}

{{ comment_el(
    url_for("static", filename="img/c01.jpg"),
    "Some Name",
    "This comment is amazing. All I want to say is that {{ name }} is an amazing person"
) }}

输出:

<p>This comment is amazing. All I want to say is that {{ name }} is an amazing person</p>

Answer 1

那是不可能的。

但是，您可以在 Jinja 宏中有一个 caller 来让您传递一个 block :

{% macro comment_el(image_url, name) %}
    ...
    <div class="media-body">
      <p>{{ caller() }}</p>
    </div>
    ...
{% endmacro %}

然后这样调用它:

{% call comment_el(url_for("static", filename="img/c01.jpg"), "Some Name") -%}
    This comment is amazing. All I want to say is that {{ name }} is an amazing person 
{%- endcall %}

相关文档:http://jinja.pocoo.org/docs/2.9/templates/#call

---

解决它的另一种选择是:

{% set comment -%}
    This comment is amazing. All I want to say is that {{ name }} is an amazing person
{%- endset %}
{{ comment_el(url_for("static", filename="img/c01.jpg"),
    "Some Name",
    comment
) }}

相关文档:http://jinja.pocoo.org/docs/2.9/templates/#block-assignments

---

为了完整起见，您还可以使用格式化:

{{ comment_el(url_for("static", filename="img/c01.jpg"),
"Some Name",
"This comment is amazing. All I want to say is that %s is an amazing person" | format(name)
) }}