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https://github.com/czlonkowski/n8n-mcp.git
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feat: add _cnd conditional operator support and n8n 2.0+ executeWorkflowTrigger fix (#495)
* feat: add _cnd conditional operator support and n8n 2.0+ executeWorkflowTrigger fix Added: - Support for all 12 _cnd operators in displayOptions validation (eq, not, gte, lte, gt, lt, between, startsWith, endsWith, includes, regex, exists) - Version-based visibility checking with @version in config - 42 new unit tests for _cnd operators Fixed: - n8n 2.0+ breaking change: executeWorkflowTrigger now recognized as activatable trigger - Removed outdated validation blocking Execute Workflow Trigger workflows 🤖 Generated with [Claude Code](https://claude.com/claude-code) Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix: harden _cnd operators and add edge case tests - Add try/catch for invalid regex patterns in regex operator - Add structure validation for between operator (from/to fields) - Add 5 new edge case tests for invalid inputs - Bump version to 2.30.1 - Resolve merge conflict with main (n8n 2.0 update) Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix: update workflow activation tests for n8n 2.0+ executeWorkflowTrigger - Update test to expect SUCCESS for executeWorkflowTrigger-only workflows - Remove outdated assertion about "executeWorkflowTrigger cannot activate" - executeWorkflowTrigger is now a valid activatable trigger in n8n 2.0+ Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * test: skip flaky versionId test pending n8n 2.0 investigation The versionId behavior appears to have changed in n8n 2.0 - simple name updates may no longer trigger versionId changes. This needs investigation but is unrelated to the _cnd operator PR. Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> --------- Co-authored-by: Romuald Członkowski <romualdczlonkowski@MacBook-Pro-Romuald.local> Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Romuald Członkowski
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GitHub
GitHub
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commit
562f4b0c4e
@@ -2905,12 +2905,18 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
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// Get properties
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const properties = node.properties || [];
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// Add @version to config for displayOptions evaluation (supports _cnd operators)
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const configWithVersion = {
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'@version': node.version || 1,
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...config
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};
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// Use enhanced validator with operation mode by default
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const validationResult = EnhancedConfigValidator.validateWithMode(
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node.nodeType,
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config,
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properties,
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node.nodeType,
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configWithVersion,
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properties,
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mode,
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profile
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);
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@@ -3276,57 +3282,27 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
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throw new Error(`Node ${nodeType} not found`);
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}
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// Get properties
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// Get properties
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const properties = node.properties || [];
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// Extract operation context (safely handle undefined config properties)
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const operationContext = {
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resource: config?.resource,
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operation: config?.operation,
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action: config?.action,
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mode: config?.mode
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// Add @version to config for displayOptions evaluation (supports _cnd operators)
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const configWithVersion = {
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'@version': node.version || 1,
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...(config || {})
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};
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// Find missing required fields
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const missingFields: string[] = [];
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for (const prop of properties) {
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// Skip if not required
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if (!prop.required) continue;
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// Skip if not visible based on current config
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if (prop.displayOptions) {
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let isVisible = true;
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// Check show conditions
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if (prop.displayOptions.show) {
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for (const [key, values] of Object.entries(prop.displayOptions.show)) {
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const configValue = config?.[key];
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const expectedValues = Array.isArray(values) ? values : [values];
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if (!expectedValues.includes(configValue)) {
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isVisible = false;
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break;
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}
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}
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}
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// Check hide conditions
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if (isVisible && prop.displayOptions.hide) {
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for (const [key, values] of Object.entries(prop.displayOptions.hide)) {
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const configValue = config?.[key];
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const expectedValues = Array.isArray(values) ? values : [values];
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if (expectedValues.includes(configValue)) {
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isVisible = false;
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break;
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}
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}
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}
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if (!isVisible) continue;
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// Skip if not visible based on current config (uses ConfigValidator for _cnd support)
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if (prop.displayOptions && !ConfigValidator.isPropertyVisible(prop, configWithVersion)) {
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continue;
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}
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// Check if field is missing (safely handle null/undefined config)
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if (!config || !(prop.name in config)) {
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missingFields.push(prop.displayName || prop.name);
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@@ -176,35 +176,107 @@ export class ConfigValidator {
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}
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/**
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* Check if a property is visible given current config
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* Evaluate a single _cnd conditional operator from n8n displayOptions.
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* Supports: eq, not, gte, lte, gt, lt, between, startsWith, endsWith, includes, regex, exists
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*/
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protected static isPropertyVisible(prop: any, config: Record<string, any>): boolean {
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private static evaluateCondition(
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condition: { _cnd: Record<string, any> },
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configValue: any
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): boolean {
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const cnd = condition._cnd;
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if ('eq' in cnd) return configValue === cnd.eq;
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if ('not' in cnd) return configValue !== cnd.not;
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if ('gte' in cnd) return configValue >= cnd.gte;
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if ('lte' in cnd) return configValue <= cnd.lte;
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if ('gt' in cnd) return configValue > cnd.gt;
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if ('lt' in cnd) return configValue < cnd.lt;
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if ('between' in cnd) {
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const between = cnd.between;
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if (!between || typeof between.from === 'undefined' || typeof between.to === 'undefined') {
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return false; // Invalid between structure
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}
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return configValue >= between.from && configValue <= between.to;
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}
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if ('startsWith' in cnd) {
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return typeof configValue === 'string' && configValue.startsWith(cnd.startsWith);
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}
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if ('endsWith' in cnd) {
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return typeof configValue === 'string' && configValue.endsWith(cnd.endsWith);
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}
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if ('includes' in cnd) {
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return typeof configValue === 'string' && configValue.includes(cnd.includes);
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}
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if ('regex' in cnd) {
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if (typeof configValue !== 'string') return false;
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try {
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return new RegExp(cnd.regex).test(configValue);
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} catch {
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return false; // Invalid regex pattern
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}
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}
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if ('exists' in cnd) {
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return configValue !== undefined && configValue !== null;
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}
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// Unknown operator - default to not matching (conservative)
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return false;
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}
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/**
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* Check if a config value matches an expected value.
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* Handles both plain values and _cnd conditional operators.
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*/
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private static valueMatches(expectedValue: any, configValue: any): boolean {
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// Check if this is a _cnd conditional
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if (expectedValue && typeof expectedValue === 'object' && '_cnd' in expectedValue) {
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return this.evaluateCondition(expectedValue, configValue);
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}
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// Plain value comparison
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return configValue === expectedValue;
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}
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/**
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* Check if a property is visible given current config.
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* Supports n8n's _cnd conditional operators in displayOptions.
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*/
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public static isPropertyVisible(prop: any, config: Record<string, any>): boolean {
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if (!prop.displayOptions) return true;
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// Check show conditions
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// Check show conditions - property visible only if ALL conditions match
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if (prop.displayOptions.show) {
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for (const [key, values] of Object.entries(prop.displayOptions.show)) {
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const configValue = config[key];
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const expectedValues = Array.isArray(values) ? values : [values];
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if (!expectedValues.includes(configValue)) {
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// Check if ANY expected value matches (OR logic within a key)
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const anyMatch = expectedValues.some(expected =>
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this.valueMatches(expected, configValue)
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);
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if (!anyMatch) {
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return false;
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}
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}
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}
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// Check hide conditions
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// Check hide conditions - property hidden if ANY condition matches
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if (prop.displayOptions.hide) {
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for (const [key, values] of Object.entries(prop.displayOptions.hide)) {
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const configValue = config[key];
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const expectedValues = Array.isArray(values) ? values : [values];
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if (expectedValues.includes(configValue)) {
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// Check if ANY expected value matches (property should be hidden)
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const anyMatch = expectedValues.some(expected =>
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this.valueMatches(expected, configValue)
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);
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if (anyMatch) {
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return false;
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}
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}
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}
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return true;
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}
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@@ -331,24 +331,16 @@ export function validateWorkflowStructure(workflow: Partial<Workflow>): string[]
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}
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// Validate active workflows have activatable triggers
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// Issue #351: executeWorkflowTrigger cannot activate a workflow
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// It can only be invoked by other workflows
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// NOTE: Since n8n 2.0, executeWorkflowTrigger is now activatable and MUST be activated to work
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if ((workflow as any).active === true && workflow.nodes && workflow.nodes.length > 0) {
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const activatableTriggers = workflow.nodes.filter(node =>
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!node.disabled && isActivatableTrigger(node.type)
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);
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const executeWorkflowTriggers = workflow.nodes.filter(node =>
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!node.disabled && node.type.toLowerCase().includes('executeworkflow')
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);
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if (activatableTriggers.length === 0 && executeWorkflowTriggers.length > 0) {
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// Workflow is active but only has executeWorkflowTrigger nodes
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const triggerNames = executeWorkflowTriggers.map(n => n.name).join(', ');
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if (activatableTriggers.length === 0) {
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errors.push(
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`Cannot activate workflow with only Execute Workflow Trigger nodes (${triggerNames}). ` +
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'Execute Workflow Trigger can only be invoked by other workflows, not activated. ' +
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'Either deactivate the workflow or add a webhook/schedule/polling trigger.'
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'Cannot activate workflow: No activatable trigger nodes found. ' +
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'Workflows must have at least one enabled trigger node (webhook, schedule, executeWorkflowTrigger, etc.).'
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);
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}
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}
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@@ -897,13 +897,13 @@ export class WorkflowDiffEngine {
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// Workflow activation operation validators
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private validateActivateWorkflow(workflow: Workflow, operation: ActivateWorkflowOperation): string | null {
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// Check if workflow has at least one activatable trigger
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// Issue #351: executeWorkflowTrigger cannot activate workflows
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// NOTE: Since n8n 2.0, executeWorkflowTrigger is activatable and MUST be activated to work
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const activatableTriggers = workflow.nodes.filter(
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node => !node.disabled && isActivatableTrigger(node.type)
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);
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if (activatableTriggers.length === 0) {
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return 'Cannot activate workflow: No activatable trigger nodes found. Workflows must have at least one enabled trigger node (webhook, schedule, email, etc.). Note: executeWorkflowTrigger cannot activate workflows as they can only be invoked by other workflows.';
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return 'Cannot activate workflow: No activatable trigger nodes found. Workflows must have at least one enabled trigger node (webhook, schedule, executeWorkflowTrigger, etc.).';
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}
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return null;
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@@ -495,9 +495,14 @@ export class WorkflowValidator {
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}
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// Validate node configuration
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// Add @version to parameters for displayOptions evaluation (supports _cnd operators)
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const paramsWithVersion = {
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'@version': node.typeVersion || 1,
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...node.parameters
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};
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const nodeValidation = this.nodeValidator.validateWithMode(
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node.type,
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node.parameters,
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paramsWithVersion,
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nodeInfo.properties || [],
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'operation',
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profile as any
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@@ -183,7 +183,7 @@ export function isTriggerNode(nodeType: string): boolean {
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}
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/**
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* Check if a node is an ACTIVATABLE trigger (excludes executeWorkflowTrigger)
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* Check if a node is an ACTIVATABLE trigger
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*
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* This function determines if a node can be used to activate a workflow.
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* Returns true for:
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@@ -191,25 +191,18 @@ export function isTriggerNode(nodeType: string): boolean {
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* - Time-based triggers (schedule, cron)
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* - Poll-based triggers (emailTrigger, slackTrigger, etc.)
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* - Manual triggers (manualTrigger, start, formTrigger)
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*
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* Returns FALSE for:
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* - executeWorkflowTrigger (can only be invoked by other workflows)
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* - Sub-workflow triggers (executeWorkflowTrigger) - requires activation in n8n 2.0+
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*
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* Used for: Activation validation (active workflows need activatable triggers)
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*
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* NOTE: Since n8n 2.0, executeWorkflowTrigger workflows MUST be activated to work.
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* This is a breaking change from pre-2.0 behavior.
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*
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* @param nodeType - The node type to check
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* @returns true if node can activate a workflow
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*/
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export function isActivatableTrigger(nodeType: string): boolean {
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const normalized = normalizeNodeType(nodeType);
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const lowerType = normalized.toLowerCase();
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// executeWorkflowTrigger cannot activate a workflow (invoked by other workflows)
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if (lowerType.includes('executeworkflow')) {
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return false;
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}
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// All other triggers can activate workflows
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// All trigger nodes can activate workflows (including executeWorkflowTrigger in n8n 2.0+)
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return isTriggerNode(nodeType);
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}
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