如何使用Jade locals选择哪个部分或包含使用？

Question

我想通过将位置作为本地发送来选择要包含哪个玉。这是我试过的：

app.js：

var express = require('express');
var fs = require('fs');
var app = express();
var jade = require('jade');

app.get('/jadetest', function(req, res){
    var fn = jade.compileFile('views/over.jade');
    var locals = {"bodystring": "./body.jade"}

    res.writeHead(200, {'Content-Type': 'html'});
    res.write(fn(locals));
    res.end();
})

var server = app.listen(3000);

over.jade：

doctype html
html(lang="en")
    head
title= pageTitle
body
    h1 Title
    // This doesn't work
    //include bodystring
    // or this
    //include #{bodystring}
    // or this
    //include -bodystring
    // this does, but it doesn't offer the flexibility I want
    include ./body.jade

body.jade：

h1 Jade - node template engine

我可以将标题设置为bodystring的内容，但是当我把它放在include中时它不喜欢它。这有单独的语法吗？有可能吗？我是在努力做事吗？