Getting can not read property 'length' of undefined error

Developers
1

Hi Team,

I am using set and get methods in property panel for input fields.Please find the piece of code.

var ruleSetEntry = entryFactory.textField({
		    id: 'ruleSetId',
		    description: '',
		    label: 'RuleSetId',
		    modelProperty: 'ruleSetId',
		    set : function(element, values) {
			   var businessObject = getBusinessObject(element),
			       newObjectList = [];
			
			   if (typeof values.ruleSet !== 'undefined' && values.ruleSet !== '') {
			     newObjectList.push(bpmnFactory.create('bpmn:RuleSetId', {
			       text: values.ruleSet
			     }));
			   }
			   return cmdHelper.setList(element, businessObject, 'ruleSetId', newObjectList);
			 },
			
			 get : function(element) {
			   var businessObject = getBusinessObject(element);
			   var documentations = businessObject.get('ruleSetId'), text = (documentations.length > 0) ? documentations[0].text : '';
			      return { ruleSetId: text };
			 }
		     });
	 group.entries.push(ruleSetEntry);

with this code i am getting ‘can not read property ‘length’ of undefined’.Please find the attached screenshot.Please let me know why this error coming in console.

Thanks
-Prameela

2

Hi,

Did you try to debug it?

By the look of it documentations is used before actually being set.
…Or businessObject.get('ruleSetId') returns an undefined result.

Cheers,
Vladimir

3

Hi vladimirs,

Before set method i tried calling get method,still same error and businessObject.get(‘ruleSetId’) returning an undefined result.

Thanks
-Prameela

4

I would advice to write some test cases that cover what you are trying to achieve and try to debug your code.

Please, see example as a reference and look for hints in source repository for the properties panel on how to achieve your requirement.

Cheers,
Vladimir