server/AyaNova/Controllers/ReportController.cs

@@ -104,7 +104,7 @@ namespace AyaNova.Api.Controllers
             }";
 
             //sample template
-            var reportTemplate = "'<div>{{#with person}}{{firstname}} {{lastname}}{{/with}}</div>'";
+            var reportTemplate = "'<div>{{#with person}}{{firstname}}  {{loud lastname}}{{/with}}</div>'";
             //data object        
             var reportData = "{ person: { firstname: 'Yehuda', lastname: 'Katz' } }";
 
@@ -114,13 +114,18 @@ namespace AyaNova.Api.Controllers
                 //Add handlebars JS for compiling and presenting
                 await page.AddScriptTagAsync(new AddTagOptions() { Path = hbspath });
 
+                //test add helpers
+                await page.AddScriptTagAsync(new AddTagOptions() { Path = Path.Combine(ReportJSFolderPath, "ay-hb-helpers.js") });
+                //execute to add to handlebars
+                await page.EvaluateExpressionAsync("ayRegisterHelpers();");
+
                 //compile and run handlebars template              
-                var compileScript = $"Handlebars.compile({reportTemplate})({reportData});";                             
+                var compileScript = $"Handlebars.compile({reportTemplate})({reportData});";
                 var resultHTML = await page.EvaluateExpressionAsync<string>(compileScript);
-              
+
                 //render report as HTML
-                 await page.AddStyleTagAsync(new AddTagOptions { Content = reportCSS });
-                 await page.SetContentAsync(resultHTML);
+                await page.AddStyleTagAsync(new AddTagOptions { Content = reportCSS });
+                await page.SetContentAsync(resultHTML);
 
                 //render to pdf and return
                 var pdfBuffer = await page.PdfDataAsync();

server/AyaNova/resource/reportjs/ay-hb-helpers.js

@@ -0,0 +1,5 @@
+function ayRegisterHelpers() {
+  Handlebars.registerHelper("loud", function (aString) {
+    return aString.toUpperCase();
+  });
+}