Pipelines

Pipelines in Go templates allow chaining commands where the output of one becomes the input to the next.

Data Commands

Access data fields from the template context.

{{.Title}}  // Access Title field from data
{{.User.Name}}  // Access nested fields

Call template functions with arguments.

{{template "content"}}  // Call template function
{{len .Items}}  // Call built-in len function

Call methods on data objects.

type Data struct {}
func (d Data) SayMsg(m string) string {
    return m
}

{{.SayMsg "Hello World!"}}  // Call method with argument

Chain commands where output of one becomes input to next.

{{ command1 arg1 | command2 }}  // Pipe result of command1 to command2
{{ .Name | printf "%s" | html }}  // Chain multiple commands

Control whitespace in template output.

{{- "some string" -}}  // Remove whitespace before and after
{{ "text" -}}  // Remove whitespace after
{{- "text" }}  // Remove whitespace before