异步加载句柄模板 [英] loading handlebars template asynchronously
问题描述
我正在尝试编写一个函数,该函数使用ajax调用来获得模板并编译它以供使用,但我需要使用一个promise()函数,该函数会为我提供一个已编译的句柄模板(我将所有模板放在单独的文件中)所以我实际上可以使用它。
function getTemplate(name){
$ .get('/'+ name + '.hbs')。success(function(src){
var template = Handlebars.compile(src);
//无法在这里返回模板
});
$ b $ p
$ b 如何通过承诺来做到这一点,所以我可以这样做: (函数(e){
getTemplate('form')。done(函数(e)){
$ b
(模板){
$(body)。append(template({
name:My Name
})
);
});
});
解决方案 Chovy,我看到你接受了一个答案,但你可能有兴趣通过链接 .then()
而不是来知道 getTemplate
可以。成功()
,几乎写在问题中:
function getTemplate(name){
return $ .get('/'+ name +'。hbs')。then(function(src){
return Handlebars.compile(src);
});
}
或者,采用charlietfl的想法来传递数据并返回完全的Promise组成片段:
function getTemplate(name,data){
return $ .get('/'+ name +' (src){
return Handlebars.compile(src)(data);
});
}
nett效果与charlietfl的 getTemplate版本相同
但是 .then()
不需要显式创建Deferred。代码因此更加紧凑。
I'm trying to write a function that will give me a compiled handlebars template (I have all my templates in separate files) using an ajax call to get the template and compile it for use, but I need to use a promise so I can actually use it.
function getTemplate(name){
$.get('/'+name+'.hbs').success(function(src){
var template = Handlebars.compile(src);
//can't return the template here.
});
}
How do I do this with promises so I can do something like:
$("a").click(function(e){
getTemplate('form').done(function(template){
$("body").append(template({
name: "My Name"
})
);
});
});
解决方案 Chovy, I see you have accepted an answer but you might be interested to know that getTemplate
can, by chaining .then()
rather than .success()
, be written almost as in the question :
function getTemplate(name) {
return $.get('/'+name+'.hbs').then(function(src) {
return Handlebars.compile(src);
});
}
or, adopting charlietfl's idea to pass in data and return a Promise of a fully composed fragment :
function getTemplate(name, data) {
return $.get('/'+name+'.hbs').then(function(src) {
return Handlebars.compile(src)(data);
});
}
The nett effect is identical to charlietfl's version of getTemplate
but .then()
makes it unnecessary to create a Deferred explicitly. The code is thus more compact.
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