How static resources are resolved within a module

[jtabot]

Hi all

I am creating a module and I want to use js and css files inside my jsp files. I noticed that in some modules when they have jsp views inside the webapp folder like hello.jsp. Inside controllers the view is resolved as "/module/moduleId/hello" where openmrs will definitely add the .jsp at the end.

Now I have the following files webapp/hello.jsp and webapp/resources/hello.js. I tried using
<script src="../resources/hello.js"/>
inside the jsp file to include the hello.js but I get 404

[dkayiwa]

Use something like this: https://github.com/openmrs/openmrs-module-xforms/blob/master/omod/src/main/webapp/xformDesigner.jsp#L15

[jtabot]

openmrs/openmrs-module-xforms/blob/master/omod/src/main/webapp/xformDesigner.jsp#L15

@dkayiwa thanks. Please help me understand how this is resolved file="/moduleResources/xforms/formdesigner/FormDesigner.nocache.js. I mean if I have .js file inside moduleName/omod/src/main/webapp/js/hello.js how would I my html include code look like?

[dkayiwa]

Put it under resources in a path like ../webapp/resources/js/hello.js

Then you would use:

<openmrs:htmlInclude file="/moduleResources/moduleName/js/hello.js"/>

[jtabot]

@dkayiwa the above was indeed helpful. I was able include javascript files into my jsp page using that.

Now can't seem to figure this one out;

I have a jsp file in
webapp/views/hello.jsp

and a javascript file in
webapp/resources/js/sw.js

I want to register a Service Worker from the hello.jsp page. I have placed this code inside the hello.jsp

<script>
    if ("serviceWorker" in navigator) {
        console.log("Service Worker Available!!!");
        navigator.serviceWorker.register("../resources/js/sw.js").then(function(registration) {
            console.log("Yay!");
        }).catch(function(error) {
            console.log("error!", error);
        });
    }
</script>

When I deploy and test the application, I get this output. Looks like the sw.js file is not been found

Service Worker Available!!!
helloWorldForm.form:1484 error! TypeError: Failed to register a ServiceWorker: A bad HTTP response code (404) was received when fetching the script.

[dkayiwa]

Did you try this?
navigator.serviceWorker.register("<openmrs:htmlInclude file='/moduleResources/moduleName/js/sw.js'/>").then(function(registration) {

[dkayiwa]

I just realised the above would not work because it just creates a script tag.
Did you try this?
navigator.serviceWorker.register("../moduleResources/moduleName/js/sw.js").then(function(registration) {

[jtabot]

@dkayiwa thanks. But that didn't work either. This is a huge blocker for us. Do you think platform will need some enhancements to have this working?

[raff]

@jtabot, see e.g. https://github.com/openmrs/openmrs-module-dhisreport/blob/d6a2a00b098e6379e1c364e430173a7dfa6cd3c5/omod/src/main/webapp/resources/js/js_css.jsp#L25 how you can construct js url...

[jtabot]

@raff thanks. That worked like a charm

[jtabot]

@raff can I use that in an external javascript to resolve resources or is it only allowed in jsp pages?

say I have an external javascript that is included in my jsp page and inside my javascipt i want to resolve file paths in strings like '/css/main.css'

[raff]

js files are not processed by the container...

The typical approach is to define a js global variable CONTEXT_PATH = ${pageContext.request.contextPath} in a jsp page and then use it in your scripts.