WhatsApp template messages can be delivered with the correct variable
values while the Chatwoot conversation shows numeric placeholders
instead. This affects template sends where the client submits the raw
template body together with valid processed parameters; WhatsApp
delivery itself remains unchanged.
The message model currently passes outgoing content through Liquid
before saving it. Liquid interprets positional WhatsApp placeholders
such as `{{1}}` and `{{2}}` as numeric expressions, even though the
WhatsApp sender independently uses `processed_params.body` to build the
provider payload.
Fixes
https://linear.app/chatwoot/issue/PLA-192/render-whatsapp-template-values-in-conversation-transcripts
### What changed
For WhatsApp template messages, Chatwoot now substitutes positional or
named body placeholders from `processed_params.body` before saving the
transcript. Missing values remain visible as placeholders, and ordinary
outgoing Liquid messages continue through the existing rendering path.
The existing message model regression suite remains green, and the
reported payload now persists as `Hello Ahmad, Furqan is your contact.`
### Things to know
This corrects newly created messages. Existing conversation messages
that were already stored as `1`, `2`, and so on are not backfilled.
### How to reproduce
1. Open a WhatsApp conversation outside the 24-hour messaging window.
2. Send a positional template whose body contains `{{1}}` and `{{2}}`.
3. Supply values for both parameters while submitting the original
template body as the message content.
4. Observe that WhatsApp delivers the substituted values, while the
Chatwoot transcript shows `1` and `2`.
### How to test
1. Select a WhatsApp template with two body variables.
2. Enter `Ahmad` and `Furqan` as the values and send the message.
3. Confirm the recipient receives the substituted template.
4. Confirm the Chatwoot conversation also displays `Ahmad` and `Furqan`
instead of the numeric placeholders.
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Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>
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