Compiling Dust templates from Different Sources - express

Question

I am trying to compile and render a Dust template in Express using content from two different sources:
Dust files located under the /views directory
A response as a string from an external CDN
My goal is to receive a string response from the CDN, which will have content referencing the Dust files stored locally in /views. It will look something like this:
"{>layout/}
{<content}
<h1>Here is the dynamic content that will change based on the CDN request</h1>
{<content}"
The layout.dust file is stored locally under /views, which is referenced from the CDN's string response.
I am trying to compile the string response in my route by doing:
var compiled = dust.compile(templateStr, 'catalog_template');
dust.loadSource(compiled);
dust.render('catalog_template', dustParams, function(err, out) {
if(err) {
console.log(err);
}
console.log(out);
res.render(out);
});
But rendering the file causes an error:
[Error: Template Not Found: layout]
So somehow I need to compile the CDN's string with layout.dust (which is located in my /views directory). What is the best way to do this?

Answer 1

You just need to compile layout.dust by itself and when you render the CDN template, dust will pull in the layout partial. You can have dust dynamically compile templates from your filesystem like so:
dust.onLoad = function (name, callback) {
// Get src from filesystem
fs.readFile('path to template', function (err, data) {
if (err) throw err;
callback(err, data.toString());
});
}
Make sure you require the node fs module in your code.