fix(trigger-words): propagate LORA_STACK updates through combiners (#881)

tests/frontend/utils/loraChainTraversal.test.js

@@ -0,0 +1,151 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const { APP_MODULE, UTILS_MODULE } = vi.hoisted(() => ({
+  APP_MODULE: new URL("../../../scripts/app.js", import.meta.url).pathname,
+  UTILS_MODULE: new URL("../../../web/comfyui/utils.js", import.meta.url).pathname,
+}));
+
+vi.mock(APP_MODULE, () => ({
+  app: {
+    graph: null,
+    registerExtension: vi.fn(),
+    ui: {
+      settings: {
+        getSettingValue: vi.fn(),
+      },
+    },
+  },
+}));
+
+describe("LoRA chain traversal", () => {
+  let collectActiveLorasFromChain;
+
+  beforeEach(async () => {
+    vi.resetModules();
+    ({ collectActiveLorasFromChain } = await import(UTILS_MODULE));
+  });
+
+  function createGraph(nodes, links) {
+    const graph = {
+      _nodes: nodes,
+      links,
+      getNodeById(id) {
+        return nodes.find((node) => node.id === id) ?? null;
+      },
+    };
+
+    nodes.forEach((node) => {
+      node.graph = graph;
+    });
+
+    return graph;
+  }
+
+  it("aggregates active LoRAs through a combiner with multiple LORA_STACK inputs", () => {
+    const randomizerA = {
+      id: 1,
+      comfyClass: "Lora Randomizer (LoraManager)",
+      mode: 0,
+      widgets: [
+        {
+          name: "loras",
+          value: [
+            { name: "Alpha", active: true },
+            { name: "Ignored", active: false },
+          ],
+        },
+      ],
+      inputs: [],
+      outputs: [],
+    };
+    const randomizerB = {
+      id: 2,
+      comfyClass: "Lora Randomizer (LoraManager)",
+      mode: 0,
+      widgets: [
+        {
+          name: "loras",
+          value: [{ name: "Beta", active: true }],
+        },
+      ],
+      inputs: [],
+      outputs: [],
+    };
+    const combiner = {
+      id: 3,
+      comfyClass: "Lora Stack Combiner (LoraManager)",
+      mode: 0,
+      widgets: [],
+      inputs: [
+        { name: "lora_stack_a", type: "LORA_STACK", link: 11 },
+        { name: "lora_stack_b", type: "LORA_STACK", link: 12 },
+      ],
+      outputs: [],
+    };
+    const loader = {
+      id: 4,
+      comfyClass: "Lora Loader (LoraManager)",
+      mode: 0,
+      widgets: [],
+      inputs: [{ name: "lora_stack", type: "LORA_STACK", link: 13 }],
+      outputs: [],
+    };
+
+    createGraph(
+      [randomizerA, randomizerB, combiner, loader],
+      {
+        11: { origin_id: 1, target_id: 3 },
+        12: { origin_id: 2, target_id: 3 },
+        13: { origin_id: 3, target_id: 4 },
+      }
+    );
+
+    const result = collectActiveLorasFromChain(loader);
+
+    expect([...result]).toEqual(["Alpha", "Beta"]);
+  });
+
+  it("stops propagation when the combiner is inactive", () => {
+    const randomizer = {
+      id: 1,
+      comfyClass: "Lora Randomizer (LoraManager)",
+      mode: 0,
+      widgets: [
+        {
+          name: "loras",
+          value: [{ name: "Alpha", active: true }],
+        },
+      ],
+      inputs: [],
+      outputs: [],
+    };
+    const combiner = {
+      id: 2,
+      comfyClass: "Lora Stack Combiner (LoraManager)",
+      mode: 2,
+      widgets: [],
+      inputs: [{ name: "lora_stack_a", type: "LORA_STACK", link: 21 }],
+      outputs: [],
+    };
+    const loader = {
+      id: 3,
+      comfyClass: "Lora Loader (LoraManager)",
+      mode: 0,
+      widgets: [],
+      inputs: [{ name: "lora_stack", type: "LORA_STACK", link: 22 }],
+      outputs: [],
+    };
+
+    createGraph(
+      [randomizer, combiner, loader],
+      {
+        21: { origin_id: 1, target_id: 2 },
+        22: { origin_id: 2, target_id: 3 },
+      }
+    );
+
+    const result = collectActiveLorasFromChain(loader);
+
+    expect(result.size).toBe(0);
+  });
+});

vue-widgets/src/main.ts

@@ -9,7 +9,7 @@ import type { LoraPoolConfig, RandomizerConfig, CyclerConfig } from './composabl
 import {
   setupModeChangeHandler,
   createModeChangeCallback,
-  LORA_PROVIDER_NODE_TYPES
+  LORA_CHAIN_NODE_TYPES
 } from './mode-change-handler'
 
 const LORA_POOL_WIDGET_MIN_WIDTH = 500
@@ -755,8 +755,8 @@ app.registerExtension({
       }
     }
 
-    // Register mode change handlers for LoRA provider nodes
+    // Register mode change handlers for LORA_STACK chain nodes
-    if (LORA_PROVIDER_NODE_TYPES.includes(comfyClass)) {
+    if (LORA_CHAIN_NODE_TYPES.includes(comfyClass)) {
       const originalOnNodeCreated = nodeType.prototype.onNodeCreated
 
       nodeType.prototype.onNodeCreated = function () {

vue-widgets/src/mode-change-handler.ts

@@ -18,7 +18,22 @@ export const LORA_PROVIDER_NODE_TYPES = [
   "Lora Cycler (LoraManager)",
 ] as const;
 
+/**
+ * Nodes that do not own LoRA state themselves, but merge or forward LORA_STACK
+ * inputs so downstream trigger-word updates must traverse through them.
+ */
+export const LORA_STACK_AGGREGATOR_NODE_TYPES = [
+  "Lora Stack Combiner (LoraManager)",
+] as const;
+
+export const LORA_CHAIN_NODE_TYPES = [
+  ...LORA_PROVIDER_NODE_TYPES,
+  ...LORA_STACK_AGGREGATOR_NODE_TYPES,
+] as const;
+
 export type LoraProviderNodeType = typeof LORA_PROVIDER_NODE_TYPES[number];
+export type LoraStackAggregatorNodeType = typeof LORA_STACK_AGGREGATOR_NODE_TYPES[number];
+export type LoraChainNodeType = typeof LORA_CHAIN_NODE_TYPES[number];
 
 /**
  * Check if a node class is a LoRA provider node.
@@ -27,6 +42,16 @@ export function isLoraProviderNode(comfyClass: string): comfyClass is LoraProvid
   return LORA_PROVIDER_NODE_TYPES.includes(comfyClass as LoraProviderNodeType);
 }
 
+export function isLoraStackAggregatorNode(
+  comfyClass: string
+): comfyClass is LoraStackAggregatorNodeType {
+  return LORA_STACK_AGGREGATOR_NODE_TYPES.includes(comfyClass as LoraStackAggregatorNodeType);
+}
+
+export function isLoraChainNode(comfyClass: string): comfyClass is LoraChainNodeType {
+  return LORA_CHAIN_NODE_TYPES.includes(comfyClass as LoraChainNodeType);
+}
+
 /**
  * Extract active LoRA filenames from a node based on its type.
  *
@@ -40,6 +65,10 @@ export function getActiveLorasFromNodeByType(node: any): Set<string> {
     return extractFromCyclerConfig(node);
   }
 
+  if (isLoraStackAggregatorNode(comfyClass)) {
+    return new Set<string>();
+  }
+
   // Default: use lorasWidget (works for Stacker and Randomizer)
   return extractFromLorasWidget(node);
 }

web/comfyui/utils.js

@@ -10,10 +10,27 @@ export const LORA_PROVIDER_NODE_TYPES = [
   "Lora Cycler (LoraManager)",
 ];
 
+export const LORA_STACK_AGGREGATOR_NODE_TYPES = [
+  "Lora Stack Combiner (LoraManager)",
+];
+
+export const LORA_CHAIN_NODE_TYPES = [
+  ...LORA_PROVIDER_NODE_TYPES,
+  ...LORA_STACK_AGGREGATOR_NODE_TYPES,
+];
+
 export function isLoraProviderNode(comfyClass) {
   return LORA_PROVIDER_NODE_TYPES.includes(comfyClass);
 }
 
+export function isLoraStackAggregatorNode(comfyClass) {
+    return LORA_STACK_AGGREGATOR_NODE_TYPES.includes(comfyClass);
+}
+
+export function isLoraChainNode(comfyClass) {
+    return LORA_CHAIN_NODE_TYPES.includes(comfyClass);
+}
+
 function isMapLike(collection) {
     return collection && typeof collection.entries === "function" && typeof collection.values === "function";
 }
@@ -245,16 +262,20 @@ export function hideWidgetForGood(node, widget, suffix = "") {
 // Update pattern to match both formats: <lora:name:model_strength> or <lora:name:model_strength:clip_strength>
 export const LORA_PATTERN = /<lora:([^:]+):([-\d\.]+)(?::([-\d\.]+))?>/g;
 
-// Get connected Lora Stacker nodes that feed into the current node
+function isLoraStackInput(input) {
-export function getConnectedInputStackers(node) {
+    return input?.type === "LORA_STACK";
-    const connectedStackers = [];
+}
+
+// Get connected LORA_STACK chain nodes that feed into the current node
+export function getConnectedInputLoraChainNodes(node) {
+    const connectedNodes = [];
 
     if (!node?.inputs) {
-        return connectedStackers;
+        return connectedNodes;
     }
 
     for (const input of node.inputs) {
-        if (input.name !== "lora_stack" || !input.link) {
+        if (!isLoraStackInput(input) || !input.link) {
             continue;
         }
 
@@ -264,12 +285,12 @@ export function getConnectedInputStackers(node) {
         }
 
         const sourceNode = node.graph?.getNodeById?.(link.origin_id);
-        if (sourceNode && isLoraProviderNode(sourceNode.comfyClass)) {
+        if (sourceNode && isLoraChainNode(sourceNode.comfyClass)) {
-            connectedStackers.push(sourceNode);
+            connectedNodes.push(sourceNode);
         }
     }
 
-    return connectedStackers;
+    return connectedNodes;
 }
 
 // Get connected TriggerWord Toggle nodes that receive output from the current node
@@ -314,6 +335,11 @@ export function getActiveLorasFromNode(node) {
         return activeLoraNames;
     }
 
+    // Aggregator nodes do not own LoRA state directly; they only forward upstream stacks.
+    if (isLoraStackAggregatorNode(node.comfyClass)) {
+        return activeLoraNames;
+    }
+
     // Handle Lora Stacker and Lora Randomizer (lorasWidget)
     let lorasWidget = node.lorasWidget;
     if (!lorasWidget && node.widgets) {
@@ -348,14 +374,18 @@ export function collectActiveLorasFromChain(node, visited = new Set()) {
     // Mode 2 is Never, Mode 4 is Bypass
     const isNodeActive = node.mode === undefined || node.mode === 0 || node.mode === 3;
     
+    if (!isNodeActive) {
+        return new Set();
+    }
+
     // Get active loras from current node only if node is active
-    const allActiveLoraNames = isNodeActive ? getActiveLorasFromNode(node) : new Set();
+    const allActiveLoraNames = getActiveLorasFromNode(node);
     
-    // Get connected input stackers and collect their active loras
+    // Get connected input LORA_STACK chain nodes and collect their active loras
-    const inputStackers = getConnectedInputStackers(node);
+    const inputChainNodes = getConnectedInputLoraChainNodes(node);
-    for (const stacker of inputStackers) {
+    for (const chainNode of inputChainNodes) {
-        const stackerLoras = collectActiveLorasFromChain(stacker, visited);
+        const upstreamLoras = collectActiveLorasFromChain(chainNode, visited);
-        stackerLoras.forEach(name => allActiveLoraNames.add(name));
+        upstreamLoras.forEach(name => allActiveLoraNames.add(name));
     }
     
     return allActiveLoraNames;
@@ -819,8 +849,8 @@ export function updateDownstreamLoaders(startNode, visited = new Set()) {
                 collectActiveLorasFromChain(targetNode);
               updateConnectedTriggerWords(targetNode, allActiveLoraNames);
             }
-            // If target is another LoRA provider node, recursively check its outputs
+            // If target is another LORA_STACK chain node, recursively check its outputs
-            else if (targetNode && isLoraProviderNode(targetNode.comfyClass)) {
+            else if (targetNode && isLoraChainNode(targetNode.comfyClass)) {
               updateDownstreamLoaders(targetNode, visited);
             }
           }

web/comfyui/vue-widgets/lora-manager-widgets.js

@@ -14938,11 +14938,24 @@ const LORA_PROVIDER_NODE_TYPES$1 = [
   "Lora Randomizer (LoraManager)",
   "Lora Cycler (LoraManager)"
 ];
+const LORA_STACK_AGGREGATOR_NODE_TYPES$1 = [
+  "Lora Stack Combiner (LoraManager)"
+];
+const LORA_CHAIN_NODE_TYPES$1 = [
+  ...LORA_PROVIDER_NODE_TYPES$1,
+  ...LORA_STACK_AGGREGATOR_NODE_TYPES$1
+];
+function isLoraStackAggregatorNode$1(comfyClass) {
+  return LORA_STACK_AGGREGATOR_NODE_TYPES$1.includes(comfyClass);
+}
 function getActiveLorasFromNodeByType(node) {
   const comfyClass = node == null ? void 0 : node.comfyClass;
   if (comfyClass === "Lora Cycler (LoraManager)") {
     return extractFromCyclerConfig(node);
   }
+  if (isLoraStackAggregatorNode$1(comfyClass)) {
+    return /* @__PURE__ */ new Set();
+  }
   return extractFromLorasWidget(node);
 }
 function extractFromLorasWidget(node) {
@@ -15002,8 +15015,18 @@ const LORA_PROVIDER_NODE_TYPES = [
   "Lora Randomizer (LoraManager)",
   "Lora Cycler (LoraManager)"
 ];
-function isLoraProviderNode(comfyClass) {
+const LORA_STACK_AGGREGATOR_NODE_TYPES = [
-  return LORA_PROVIDER_NODE_TYPES.includes(comfyClass);
+  "Lora Stack Combiner (LoraManager)"
+];
+const LORA_CHAIN_NODE_TYPES = [
+  ...LORA_PROVIDER_NODE_TYPES,
+  ...LORA_STACK_AGGREGATOR_NODE_TYPES
+];
+function isLoraStackAggregatorNode(comfyClass) {
+  return LORA_STACK_AGGREGATOR_NODE_TYPES.includes(comfyClass);
+}
+function isLoraChainNode(comfyClass) {
+  return LORA_CHAIN_NODE_TYPES.includes(comfyClass);
 }
 function isMapLike(collection) {
   return collection && typeof collection.entries === "function" && typeof collection.values === "function";
@@ -15041,14 +15064,17 @@ function getLinkFromGraph(graph, linkId) {
   }
   return graph.links[linkId] || null;
 }
-function getConnectedInputStackers(node) {
+function isLoraStackInput(input) {
+  return (input == null ? void 0 : input.type) === "LORA_STACK";
+}
+function getConnectedInputLoraChainNodes(node) {
   var _a2, _b;
-  const connectedStackers = [];
+  const connectedNodes = [];
   if (!(node == null ? void 0 : node.inputs)) {
-    return connectedStackers;
+    return connectedNodes;
   }
   for (const input of node.inputs) {
-    if (input.name !== "lora_stack" || !input.link) {
+    if (!isLoraStackInput(input) || !input.link) {
       continue;
     }
     const link = getLinkFromGraph(node.graph, input.link);
@@ -15056,11 +15082,11 @@ function getConnectedInputStackers(node) {
       continue;
     }
     const sourceNode = (_b = (_a2 = node.graph) == null ? void 0 : _a2.getNodeById) == null ? void 0 : _b.call(_a2, link.origin_id);
-    if (sourceNode && isLoraProviderNode(sourceNode.comfyClass)) {
+    if (sourceNode && isLoraChainNode(sourceNode.comfyClass)) {
-      connectedStackers.push(sourceNode);
+      connectedNodes.push(sourceNode);
     }
   }
-  return connectedStackers;
+  return connectedNodes;
 }
 function getConnectedTriggerToggleNodes(node) {
   var _a2, _b, _c;
@@ -15095,6 +15121,9 @@ function getActiveLorasFromNode(node) {
     }
     return activeLoraNames;
   }
+  if (isLoraStackAggregatorNode(node.comfyClass)) {
+    return activeLoraNames;
+  }
   let lorasWidget = node.lorasWidget;
   if (!lorasWidget && node.widgets) {
     lorasWidget = node.widgets.find((w2) => w2.name === "loras");
@@ -15118,11 +15147,14 @@ function collectActiveLorasFromChain(node, visited = /* @__PURE__ */ new Set())
   }
   visited.add(nodeKey);
   const isNodeActive2 = node.mode === void 0 || node.mode === 0 || node.mode === 3;
-  const allActiveLoraNames = isNodeActive2 ? getActiveLorasFromNode(node) : /* @__PURE__ */ new Set();
+  if (!isNodeActive2) {
-  const inputStackers = getConnectedInputStackers(node);
+    return /* @__PURE__ */ new Set();
-  for (const stacker of inputStackers) {
+  }
-    const stackerLoras = collectActiveLorasFromChain(stacker, visited);
+  const allActiveLoraNames = getActiveLorasFromNode(node);
-    stackerLoras.forEach((name) => allActiveLoraNames.add(name));
+  const inputChainNodes = getConnectedInputLoraChainNodes(node);
+  for (const chainNode of inputChainNodes) {
+    const upstreamLoras = collectActiveLorasFromChain(chainNode, visited);
+    upstreamLoras.forEach((name) => allActiveLoraNames.add(name));
   }
   return allActiveLoraNames;
 }
@@ -15191,7 +15223,7 @@ function updateDownstreamLoaders(startNode, visited = /* @__PURE__ */ new Set())
             if (targetNode && targetNode.comfyClass === "Lora Loader (LoraManager)") {
               const allActiveLoraNames = collectActiveLorasFromChain(targetNode);
               updateConnectedTriggerWords(targetNode, allActiveLoraNames);
-            } else if (targetNode && isLoraProviderNode(targetNode.comfyClass)) {
+            } else if (targetNode && isLoraChainNode(targetNode.comfyClass)) {
               updateDownstreamLoaders(targetNode, visited);
             }
           }
@@ -15784,7 +15816,7 @@ app$1.registerExtension({
         return originalConfigure == null ? void 0 : originalConfigure.apply(this, arguments);
       };
     }
-    if (LORA_PROVIDER_NODE_TYPES$1.includes(comfyClass)) {
+    if (LORA_CHAIN_NODE_TYPES$1.includes(comfyClass)) {
       const originalOnNodeCreated = nodeType.prototype.onNodeCreated;
       nodeType.prototype.onNodeCreated = function() {
         originalOnNodeCreated == null ? void 0 : originalOnNodeCreated.apply(this, arguments);