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Display any HTML in the "alert_message" setting #1311

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Merged
ian-noaa merged 1 commit into from
Oct 1, 2025
Merged

Display any HTML in the "alert_message" setting #1311

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14 changes: 14 additions & 0 deletions home/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ package main

import (
"encoding/json"
"html/template"
"log"
"net/http"
"os"
Expand Down Expand Up @@ -47,6 +48,14 @@ func parseConfig(file string) (ConfigJSON, error) {
return conf, nil
}

// Create a template function to allow the input string to be displayed
// unescaped - as raw HTML.
//
// Warning: This should ONLY be used on trusted input.
func displayAsRawHTML(text string) template.HTML {
return template.HTML(text)
}

func main() {
// FIXME: Let user specify config location or pass an env var with config
conf, err := parseConfig("settings.json")
Expand All @@ -57,6 +66,11 @@ func main() {
router := gin.Default()
router.Use(prometheusMiddleware()) // Attach our prometheus middleware

// Register custom template functions on the router
router.SetFuncMap(template.FuncMap{
"displayAsRawHTML": displayAsRawHTML,
})

// Load in the HTML templates
router.LoadHTMLGlob("templates/*")

Expand Down
2 changes: 1 addition & 1 deletion home/templates/alert.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@

<div class="container-fluid p-3 bg-white">
<div class="alert alert-danger" role="alert">
<p>{{ .Config.AlertMessage }}</p>
<p>{{ .Config.AlertMessage | displayAsRawHTML }}</p>
<!-- When congress hands out shutdown lemons, sometimes you need to make shutdown lemonade :-) -->
<!-- <marquee>{{ .Config.AlertMessage }}</marquee> -->
</div>
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