* add .TemplateData property to data in order to populate template <title> tags with the compiled subject value
* update all templates
* re-enable integration test and update implementation to check changes
* chore: fmt
* add HiddenSubject template func and update text templates
* slight performance improvement, only execute subject template once
* update template I missed
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Co-authored-by: Gilles De Mey <gilles.de.mey@gmail.com>
We have received a lot of feedback regarding the ValueString in alert notifications. Perhaps one of the most frequent complaints about ValueString is that it is difficult to read because it contains a lot of information, and the information is shown as a JSON-like string. Users have often asked how it can be templated and the answer is that it can't.
Until now users have been able to add custom annotations to their alert rules which contains values via the $values variable added in previous versions of Grafana. However, these custom annotations must be added for each of the user's alert rule, instead of once in a template that all of their alerts can be notified via.
This commit adds then the much requested feature to support values in notification templates. Users can then create a single template that prints the annotations, labels and values of their alerts in a format of their choice!
The ng_alert_notification email template did not include templating for
linked or embedded images. This change updates that.
Additionally, this change supports embedding an image for each alert in
an email batch.
Fixes#50315
* Wrap the inner template into div to prevent premailer from breaking the HTML structure
* Remove test row
* Add wrapper explanation
* Remove redundant code
* Add empty line
* add value to email template
* add value to default template
* update test string
* test: fix ngalert test suite
* test: run CI
Co-authored-by: gillesdemey <gilles.de.mey@gmail.com>
* Render new email template and fix the title
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Fix nit
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
