如何将 Jinja `length` 逻辑应用于嵌套 JSON 数组？

Question

重复，如何进一步深入嵌套数组并应用一些 length 逻辑？

目标： 如果 PositionsHeld 数组有超过 1 个条目，我想用逗号分隔值 , 但不是最后一个条目.

示例：

JSON 片段：

{
    "Employers": [
        {
            "EmploymentType": "Food Service",
            "Employer": "Test Brew",
            "EmployerURL": "",
            "StartMonth": 9,
            "StartYear": 2020,
            "EndMonth": null,
            "EndYear": null,
            "City": "Olympia",
            "State": "WA",
            "PositionsHeld": [
                {"Position": "Barista"},
                {"Position": "Asst. Manager"}
            ]
        },
        {
            "EmploymentType": "Food Service",
            "Employer": "The Steakhouse",
            "EmployerURL": "https://www.steakmill.com/",
            "StartMonth": 7,
            "StartYear": 2019,
            "EndMonth": 1,
            "EndYear": 2020,
            "City": "Milton",
            "State": "WA",
            "PositionsHeld": [
                {"Position": "Busser"}
            ]
        }
    ]
}

HTML w/Jinja 片段：

{% for e in data.Employers %}

<h3>
{% for p in e.PositionsHeld %} 
    {% if p|length > 1 %}     <-- Here is the crux of question -->
        {{ p.Position }} ,    <-- Want to add a "," if needed BUT NOT TO THE FINAL POSITION-->
        else {{ p.Position }} 
    {% endif %} 
{% endfor %}
</h3>

{% endfor %}

Answer 1

这是您要查找的内容：

{% for e in data.Employers %}
    <h3>
        {% for p in e.PositionsHeld %}
            {% if not loop.last %}{{ p.Position }}, {% else %}{{ p.Position }}{% endif %}
        {% endfor %}
    </h3>
{% endfor %}

或者，更简洁的版本（我更喜欢这种方式，因为它很简单）：

{% for e in data.Employers %}
    <h3>
        {{ e.PositionsHeld | join(',', attribute="Position") }}
    </h3>
{% endfor %}

如何将 Jinja `length` 逻辑应用于嵌套 JSON 数组？

How to apply Jinja `length` logic to nested JSON array?

html

json

jinja2