Adding custom template functions
| Author | Topic |
|---|---|
|
mysh
|
Posted on
You can define new functions in ExampleLet's say we want to add an option to unsafely render some HTML. Open
func (h *Handler) initTpl() {
commonTemplates := ""
for _, content := range TplCommonMap {
commonTemplates += content
}
for name, content := range TplMap {
views[name] = template.Must(template.New("main").Funcs(template.FuncMap{
"hasPermission": func(name string) bool {
return false
},
"logged": func() bool {
return false
},
"syntax": func(input string) template.HTML {
return template.HTML(syntax.Convert(input, true))
},
"sig": func(input string) template.HTML {
return template.HTML(syntax.Convert(input, false))
},
"iso8601": func(t time.Time) string {
return t.Format("2006-01-02")
},
"iso8601Time": func(t time.Time) string {
return t.Format("2006-01-02 15:04:05")
},
"html": func(s string) template.HTML {
return template.HTML(s)
},
"timeAgo": func(t time.Time) string {
d := time.Since(t)
if d.Seconds() < 60 {
seconds := int(d.Seconds())
if seconds == 1 {
return "1 second ago"
}
return fmt.Sprintf("%d seconds ago", seconds)
} else if d.Minutes() < 60 {
minutes := int(d.Minutes())
if minutes == 1 {
return "1 minute ago"
}
return fmt.Sprintf("%d minutes ago", minutes)
} else if d.Hours() < 24 {
hours := int(d.Hours())
if hours == 1 {
return "1 hour ago"
}
return fmt.Sprintf("%d hours ago", hours)
} else if d.Hours() < 730 {
days := int(d.Hours()) / 24
if days == 1 {
return "1 day ago"
}
return fmt.Sprintf("%d days ago", days)
} else if d.Hours() < 8760 {
months := int(d.Hours()) / 730
if months == 1 {
return "1 month ago"
}
return fmt.Sprintf("%d months ago", months)
} else {
years := int(d.Hours()) / 8760
if years == 1 {
return "1 year ago"
}
return fmt.Sprintf("%d years ago", years)
}
},
"inc": func(v int64) int64 {
return v + 1
},
"dec": func(v int64) int64 {
return v - 1
},
}).Parse(commonTemplates + content))
}
}
To it we can now add something like this:
"unsafeHtml": func(html string) template.HTML {
return template.HTML(html)
},
Then we can use Last edited on |