Fetching Include from a database?

[Kyle Cribbs]

Hello all, was hoping someone can help me understand how I can override or use client:true callback function to fetch the include from database.

To give context, we are using Kotlin and GraalVM to run its JavaScript interpreter with EJS 3.1.8.

Here is what I have tried thus far:

let data = {};
let str = "Hello <%= include('./src/main/resources/ejs_templates/imports/imports.ejs', {}); %>";

var fn = ejs.compile(str, {client:true});

fn(data, null, function(path, d){ // include callback

    print("HELLO WORLD!!!!!") // THIS PRINTS

    print(path) // THIS PRINTS

    var includedTemplate = fileReader.test3(path); // This is a custom we created that reads the data and we have printed this out, and is working

    return includedTemplate;

  }); // returns rendered string

var rendered = fn(data);

however, var rendered = fn(data); is stating: undefined is not a function.

if I print just fn, the content is:

function anonymous(locals, escapeFn, include, rethrow
) {
rethrow = rethrow || function rethrow(err,str,flnm,lineno,esc){var lines=str.split("\n");var start=Math.max(lineno-3,0);var end=Math.min(...<omitted>...
}

so it is a function...

We were thinking this could be an issue because we are technically doing this server side; however, we are specifying client: true so we have also tried this:

print("I'm here");
// tried overriding how it fetches for the include file
ejs.includeFile = function(path,d){

    print("Did we reach the mecca?")

    return fileReader.test3(path);

}
// also tried this override just in case
ejs.include = function(path,d){

    print("Did we reach the mecca?")

    return fileReader.test3(path);

}

let data = {};

let str = "<%= include('./src/main/resources/ejs_templates/imports/imports.ejs', {});%>";

var fn = ejs.compile(str);

var rendered = fn.apply(data);

When we execute this we get:

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.graalvm.polyglot.PolyglotException: Error: Could not find the include file "./src/main/resources/ejs_templates/imports/imports.ejs"] with root cause

org.graalvm.polyglot.PolyglotException: Error: Could not find the include file "./src/main/resources/ejs_templates/imports/imports.ejs"

Which to me means, we are not overriding the include fetch appropriately and its using the EJS default include fetch.

Does anyone have any thoughts on how could accomplish this?

[Kyle Cribbs]

I am a dummy, it ended up being because I am not setting fn to anything...

            let data = {}
            let str = "<%= include('./src/main/resources/ejs_templates/imports/imports.ejs');%>";
            var fn = ejs.compile(str, {client:true});

            var rendered = fn(data, null, function(path, d){
                // include callback logic
                var includedTemplate = fileReader.test3(path);
                print(includedTemplate)
                return includedTemplate;
            }, null);

that resolved it