topic Re: File upload in activiti in Alfresco Archive

File upload in activiti

ajax — Mon, 25 Feb 2013 07:47:14 GMT

Hello All,I tried to search a lot but not able to find out as to how can I add a HTML file upload element in my activiti process. Was able to add textarea using form type but not able to get exactly how can I add file upload element in process.Kindly guide as to how to do that…Thanks,Ajax

Re: File upload in activiti

jbarrez — Mon, 25 Feb 2013 13:43:06 GMT

Sorry, we haven't implemented that feature yet in Activiti.

Re: File upload in activiti

ajax — Mon, 25 Feb 2013 13:47:20 GMT

So any way around to achieve the same. I mean how can I upload a attachment or document during process??

Re: File upload in activiti

jbarrez — Mon, 25 Feb 2013 16:06:28 GMT

For the engine, an attachment or document is nothing more than a process variable.
What you need is mapping from the form property (file) to something the engine understands (process variable).

The explorer app is shipped with such a custom form property so you can start with that to learn how it can be done.

Re: File upload in activiti

ajax — Tue, 26 Feb 2013 04:56:58 GMT

For the engine, an attachment or document is nothing more than a process variable.
What you need is mapping from the form property (file) to something the engine understands (process variable).

The explorer app is shipped with such a custom form property so you can start with that to learn how it can be done.

Thank you for your quick response…

With FormService I can surely get data but problems is how do I show such element which actually can provide a way to select files from system which can further be used from variable??

Re: File upload in activiti

ajax — Tue, 26 Feb 2013 05:02:34 GMT

After looking into Book-Webapp-Explorer-App have seen a class FileAttachmentEditor is there but not able to find a form type associated with it. Is there a way to use the same in my process?

Re: File upload in activiti

jbarrez — Tue, 26 Feb 2013 10:04:47 GMT

Yes indeed, FileAttachmentEditor is a good example of such a component.

Now what you need is a new form property type (eg file), that has a client side part (ie what is used in Vaadin for rendering) and one that has an Activiti side (ie form property -> process variable). I haven't done it myself, so it's only theory so far. Could very well be some API is blocking something. But unfortunately I currently don't have time to look into how it would fit.

Re: File upload in activiti

ajax — Tue, 26 Feb 2013 10:24:41 GMT

Yes indeed, FileAttachmentEditor is a good example of such a component.

Now what you need is a new form property type (eg file), that has a client side part (ie what is used in Vaadin for rendering) and one that has an Activiti side (ie form property -> process variable). I haven't done it myself, so it's only theory so far. Could very well be some API is blocking something. But unfortunately I currently don't have time to look into how it would fit.

Ok, I tried to create the same but getting error saying "no editor or conversion strategy found to convert my field into activiti's form type"

If you can spare a little time and if can guide/provide pointer to me at least what all one has to do to create a component then I will try to implement and would contribute once done. Would be good for others too.

Sorry to ask so much but I have to do it :roll:

Thanks…

Re: File upload in activiti

ronald_van_kuij — Tue, 26 Feb 2013 22:12:53 GMT

Use a real ui framework… The ui of the explorer might fint your needs now with a few customizatios, but you'll getvstuck in the end

Re: File upload in activiti

jbarrez — Thu, 28 Feb 2013 15:55:12 GMT

Ok, I tried to create the same but getting error saying "no editor or conversion strategy found to convert my field into activiti's form type"

This is because you need to define a form property converter on the engine too. See the webapp config:

  <!– Custom form property renderers can be plugged in here –>
  <bean id="formPropertyRendererManager" class="org.activiti.explorer.ui.form.FormPropertyRendererManager" lazy-init="true">
    <!– Default renderer –>
    <property name="noTypePropertyRenderer">
      <bean class="org.activiti.explorer.ui.form.StringFormPropertyRenderer" />
    </property>
    <!– Renderers by property type –>
    <property name="propertyRenderers">
      <list>
        <bean class="org.activiti.explorer.ui.form.StringFormPropertyRenderer" />
        <bean class="org.activiti.explorer.ui.form.EnumFormPropertyRenderer" />
        <bean class="org.activiti.explorer.ui.form.LongFormPropertyRenderer" />
        <bean class="org.activiti.explorer.ui.form.DateFormPropertyRenderer" />
        <bean class="org.activiti.explorer.ui.form.UserFormPropertyRenderer" />
        <bean class="org.activiti.explorer.ui.form.BooleanFormPropertyRenderer" />
      </list>
    </property>
  </bean>

Sorry to ask so much but I have to do it

At the moment we're pretty busy with finishing up on the 5.12 release. But afterwards I might have time to look into it.

Use a real ui framework

That's just matter of opinion of course 😉

But I agree with you if you meant that the Explorer UI is for demo purposes only.