Do not return assets that have already been rendered.

Author: grantcopley

models/CBWIREController.cfc

@@ -92,7 +92,22 @@ component singleton {
 
         // Return assets from components
         if ( local.httpRequestState.assets.count() ) {
-            local.componentsResult[ "assets" ] = local.httpRequestState.assets;
+            var alreadyLoadedAssets = payload.components.reduce( function( _agg, _comp ) {
+                if ( _comp.snapshot.memo.keyExists( "assets" ) ) {
+                    _comp.snapshot.memo.assets.each( function( _asset ) {
+                        _agg.append( _asset );
+                    } );
+                }
+                return _agg;
+            }, [] );
+
+            local.componentsResult[ "assets" ] = local.httpRequestState.assets.filter( function( key, value ) {
+                return !arrayFindNoCase( alreadyLoadedAssets, key );
+            } );
+
+            if ( !local.componentsResult[ "assets" ].count() ) {
+                local.componentsResult[ "assets" ] = [];
+            }
         }
 
         // Set the response headers to prevent caching

models/Component.cfc

@@ -1135,8 +1135,8 @@ component output="true" {
         } ).each( function( key, value, result ) {
             // Extract the counter from the tag name
             local.counter = key.replaceNoCase( "assets", "" );
-            // Create assets tag id based on compile time id and counter
-            local.assetsTagId = variables._compileTimeKey & "-" & local.counter;
+            // Create assets tag id based on hash of assets
+            local.assetsTagId = hash( value );
             // Track the assets tag
             variables._assets[ local.assetsTagId ] = value;
             local.requestAssets = variables._CBWIREController.getRequestAssets();

test-harness/tests/specs/CBWIRESpec.cfc

@@ -497,11 +497,29 @@ component extends="coldbox.system.testing.BaseTestCase" {
                     updates = {}
                 );
                 var result = cbwireController.handleRequest( payload, event );
+                expect( isStruct( result.assets ) );
                 expect( result.assets.count() ).toBe( 1 );
                 var keys = result.assets.keyArray();
                 expect( result.assets[ keys.first() ] ).toInclude( "tailwind.min.css" );
             } );
 
+            it( "it should NOT return assets if they were already rendered", function() {
+                var payload = incomingRequest(
+                    memo = {
+                        "name": "test.should_track_cbwire_assets_in_http_response",
+                        "id": "Z1Ruz1tGMPXSfw7osBW2",
+                        "children": [],
+                        "assets": [ "FC8550AF548BA7D81CAA8C2333141FDA" ]
+                    },
+                    data = {},
+                    calls = [],
+                    updates = {}
+                );
+                var result = cbwireController.handleRequest( payload, event );
+                expect( isArray( result.assets ) ).toBeTrue();
+                expect( result.assets.len() ).toBe( 0 );
+            } );
+
             it( "should support $refresh action", function() {
                 var payload = incomingRequest(
                     memo = {

test-harness/wires/test/should_not_render_cbwire_assets_tags.cfm

@@ -12,4 +12,4 @@
 
 <cbwire:assets>
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/tailwind.min.css">
-</cbwire:script>
+</cbwire:assets>