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File upload in activiti

ajax

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

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jbarrez

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

ajax

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

jbarrez

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.

ajax

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??

ajax

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?

jbarrez

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.

ajax

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…

ronald_van_kuij

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

jbarrez

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:

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

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.