Pebble模板通过键获取Map元素失败，求有序生成XML方案

Hey there! Let's break down what's going wrong with your Pebble template and fix that segment access issue.

First, let's unpack why your first approach isn't working:

• When you use range(1, segmentsLength), remember that Pebble's range is left-inclusive and right-exclusive. So if segmentsLength is 3, this loop will only run for 1 and 2—you'll miss the last segment. You need to adjust it to range(1, segmentsLength + 1) to cover all indices.
• The bigger issue is the path file.value['segments'].value[sg]. If file.value['segments'] is already the Map containing your segment entries, you don't need that extra .value layer. Plus, if the keys in your segments Map are string-type numbers (like "1", "2" instead of numeric 1, 2), using a numeric index sg won't match the keys—you need to convert it to a string first.

Here's a fixed version of your first approach that addresses these problems:

{% set segments = file.value['segments'] %}
{% set segmentsLength = segments|length %} 
{% for sg in range(1, segmentsLength + 1) %}
    {% set segment = segments[str(sg)] %}
    <Segment type="{{ segment.value['segmentType'] }}">
        <Start>{{ segment.value['start'] }}</Start>
        <End>{{ segment.value['end'] }}</End>
    </Segment>
{% endfor %}

If your segments is actually a list (not a Map) and you just need to skip the first element while keeping the correct order, a simpler fix is using the slice filter instead of manually handling ranges:

{% for segment in file.value['segments']|slice(start=1) %}
    <Segment type="{{ segment.value['segmentType'] }}">
        <Start>{{ segment.value['start'] }}</Start>
        <End>{{ segment.value['end'] }}</End>
    </Segment>
{% endfor %}

And if the issue is that your segments Map isn't iterating in the order you need, you can sort the Map entries by their keys first:

{% set sortedSegments = file.value['segments']|sort(attribute='key') %}
{% for segmentEntry in sortedSegments %}
    {% set segment = segmentEntry.value %}
    <Segment type="{{ segment.value['segmentType'] }}">
        <Start>{{ segment.value['start'] }}</Start>
        <End>{{ segment.value['end'] }}</End>
    </Segment>
{% endfor %}

The core here is figuring out whether segments is a list or a Map—your second loop works because Pebble can iterate over both, but accessing them by index vs. key requires different syntax.

内容的提问来源于stack exchange，提问作者MikeH