Implement AbstractFormFieldType for File type

[shamil]

Hi,
We use Generated Task Forms with our custom application. Need to add file form field to the task form and decided to add custom type to form fields in Modeler.

Found this post useful,

Camunda Custom Form Field Type

We are implementing Camunda on our application and we have a problem with forms We need to implement our own form field type. We use the Camunda Modeler and use the custom type in the Type attribute of the field but when we try to deploy the war we always see the same error ENGINE-16004 Exception while closing command context: ENGINE-09005 Could not parse BPMN process. Errors: * unknown type 'file' [...] We searched in the documentation but we don’t see how to implement custom form field type…

searched whole web but couldn’t find concrete implementation example for type FileFormFieldType

Camunda Custom Form Field Type - #7 by roman.smirnov

Can you show us a way? How should we implement that AbstractFormFieldType? Or we should use our own custom solution by uploading files to some custom location and using file path as form field?