Pipeline JSON array trailing comma in Jinja

Question

In case it helps someone to save a couple of hours solving this error, when you try to send a json array using jinja in pipelines.

Error:
Something went wrong executing a step. Try modifying your pipeline.
Body:
{"payments":
[{% for r in a%}
{"value":"{{r.vto}}"},
{% endfor %}
]}

Valid:
{"payments":
[{% for r in a%}
{"value":"{{r.vto}}"}{% if not loop.last %},{% endif %}
{% endfor %}
]}

Reference: https://rogerpence.dev/omitting-the-last-comma-in-a-series-in-a-jinja-template/

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Diretoria Mirantes
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prashantmaheshw · Answer

Thanks for sharing this , The code in red is in my staple but it definitely will help others------------------------------Prashant Maheshwari------------------------------

prashantmaheshw · Answer

I just learned from Dough Henning , an alternative way to writing the same&nbsp;
{{ ',' if not loop.last }}​------------------------------Prashant Maheshwari------------------------------

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Pipeline JSON array trailing comma in Jinja