topic Re: Pass list into a form property in Alfresco Archive

Pass list into a form property

jwistrom — Thu, 04 Jun 2015 20:45:14 GMT

HiI am rather new to Activiti but I have some knowledge. I am using Vaadin to render the forms. I have created my own fields for rendering. Now I want to create a form property (or something) so I can render a component with two tables (available values and assigned values) in the Bpmn xml I want to

Re: Pass list into a form property

trademak — Fri, 05 Jun 2015 12:31:44 GMT

Hi Johan,

You would need to store the variables in the process context in the form field type converter.

Best regards,

Re: Pass list into a form property

jwistrom — Fri, 05 Jun 2015 13:09:43 GMT

Thank you. I will see what I can do about it. Do you know of any example I can look at? I am not so experienced so I haven't heard of "form field converter"

Re: Pass list into a form property

trademak — Fri, 05 Jun 2015 15:12:53 GMT

You can look at the Date converter as an example:

https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/engine/impl/form/DateFormType.java

Best regards,

Re: Pass list into a form property

jwistrom — Sun, 07 Jun 2015 10:31:07 GMT

Hi
From what I understand. The Date converter parses the string to a date format. In my case i pass in an expression that returns a list. How do I parse the string I pass in to an expression and then execute the expression in my custom form type (or custom form field)?

Best Regards

Re: Pass list into a form property

jbarrez — Fri, 12 Jun 2015 09:41:02 GMT

Pretty much the same way as the date, you just need to decide on a way to store the list as a string and then serialize/deserialize when needed.

Re: Pass list into a form property

jwistrom — Sun, 14 Jun 2015 20:28:09 GMT

Don't I need to pass in the list with the extension activiti:value in the xml? If so, what I understand expression can not be passed in, right? Isn't the date pattern passed in that way?

Regards
Johan

Re: Pass list into a form property

jbarrez — Tue, 16 Jun 2015 09:12:50 GMT

You would indeed need something like
<code>
<activiti:value id="left" name="Go Left" />
</code>
and then in the FormType implementation do something like .getInformation("left")

Re: Pass list into a form property

jwistrom — Mon, 22 Jun 2015 16:31:46 GMT

Then I will pass in a String right? If I pass in an expression, say
<code>${1+1}</code>

I have done like this in my custom form type.

<code>
for(FormValue fv : formProperty.getFormValues()){
         if (fv.getId().equals("myId")){
            myExpression = fv.getName();
         }
      }
</code>

But how do I interpret the incoming string as an expression because I do not get 2 in my form values, I get the string "${1+1}"

Rgds
Johan

Re: Pass list into a form property

jbarrez — Tue, 30 Jun 2015 19:06:03 GMT

Hmm you would to make it an Expression object, from the String (get the ExpressionManager from the ProcessEngineConfiguration), but you would need something to resolve it against (eg an execution).