Handlebars Switch 助手函数

这为已经非常出色的handlebars-rustcrate提供了Handlebars {{#switch}}助手函数。

感兴趣的相关链接

• 文档
• handlebars-rust
• Handlebars

快速入门

您可以使用Handlebars#register_helper方法轻松地将{{#switch}}助手函数添加到Rust Handlebars对象中

use handlebars::Handlebars;
use handlebars_switch::SwitchHelper;

let mut handlebars = Handlebars::new();
handlebars.register_helper("switch", Box::new(SwitchHelper));

示例

以下是一个示例，根据用户的访问级别渲染不同的页面

extern crate handlebars_switch;
extern crate handlebars;
#[macro_use] extern crate serde_json;

use handlebars::Handlebars;
use handlebars_switch::SwitchHelper;

fn main() {
  let mut handlebars = Handlebars::new();
  handlebars.register_helper("switch", Box::new(SwitchHelper));

  let tpl = "\
      {{#switch access}}\
          {{#case \"admin\"}}Admin{{/case}}\
          {{#default}}User{{/default}}\
      {{/switch}}\
  ";

  assert_eq!(
      handlebars.template_render(tpl, &json!({"access": "admin"})).unwrap(),
      "Admin"
  );

  assert_eq!(
      handlebars.template_render(tpl, &json!({"access": "nobody"})).unwrap(),
      "User"
  );
}