Function ExampleRanger

ranger_test.go:36–69

ExampleRanger demonstrates how to write a custom template ranger.

()

// ExampleRanger demonstrates how to write a custom template ranger.
func ExampleRanger() {
	// Error handling ignored for brevity.
	//
	// Setup template and rendering.
	loader := NewInMemLoader()
	loader.Set("template",
		`{{ range k := ecr }}
{{k}} = {{.}}
{{- end }}
{{ range k := struct.RangerEface }}
{{k}} = {{.}}
{{- end }}`,
	)
	set := NewSet(loader, WithSafeWriter(nil))
	t, _ := set.GetTemplate("template")

	// Pass a custom ranger instance as the 'ecr' var, as well as in a struct field with type interface{}.
	vars := VarMap{
		"ecr":    reflect.ValueOf(&exampleCustomRanger{}),
		"struct": reflect.ValueOf(struct{ RangerEface interface{} }{RangerEface: &exampleCustomRanger{}}),
	}

	// Execute template.
	_ = t.Execute(os.Stdout, vars, nil)

	// Output:
	// 0 = custom ranger 0
	// 1 = custom ranger 1
	// 2 = custom ranger 2
	//
	// 0 = custom ranger 0
	// 1 = custom ranger 1
	// 2 = custom ranger 2
}