Merge pull request #1489 from atmire/Process-empty-parameters-fix

Scripts & Processes without parameters fix

src/app/process-page/form/process-form.component.spec.ts

@@ -87,4 +87,15 @@ describe('ProcessFormComponent', () => {
     component.submitForm({ controls: {} } as any);
     expect(scriptService.invoke).toHaveBeenCalled();
   });
+
+  describe('when undefined parameters are provided', () => {
+    beforeEach(() => {
+      component.parameters = undefined;
+    });
+
+    it('should invoke the script with an empty array of parameters', () => {
+      component.submitForm({ controls: {} } as any);
+      expect(scriptService.invoke).toHaveBeenCalledWith(script.id, [], jasmine.anything());
+    });
+  });
 });

src/app/process-page/form/process-form.component.ts

@@ -12,6 +12,7 @@ import { Router } from '@angular/router';
 import { getFirstCompletedRemoteData } from '../../core/shared/operators';
 import { RemoteData } from '../../core/data/remote-data';
 import { getProcessListRoute } from '../process-page-routing.paths';
+import { isEmpty } from '../../shared/empty.util';
 
 /**
  * Component to create a new script
@@ -35,7 +36,7 @@ export class ProcessFormComponent implements OnInit {
   /**
    * The parameter values to use to start the process
    */
-  @Input() public parameters: ProcessParameter[];
+  @Input() public parameters: ProcessParameter[] = [];
 
   /**
    * Optional files that are used as parameter values
@@ -69,6 +70,9 @@ export class ProcessFormComponent implements OnInit {
    * @param form
    */
   submitForm(form: NgForm) {
+    if (isEmpty(this.parameters)) {
+      this.parameters = [];
+    }
     if (!this.validateForm(form) || this.isRequiredMissing()) {
       return;
     }