Other platform (mobile) lets say B4A or android-java, cordova or whatever, makes a request to CUBA REST-API and takes in return a JSON, lets say Routes. I write this JSON to SQLite database, property by property. Run through this table and create a related record in other table with some info, results and a Photo. This foto is stored in mobile.
Finally, the “result” entities are sent to CUBA via REST-API. How can I return each photo attached to result?
In SQLite “result” table exist string property with attached Photo name, but CUBA “result” entity uses a filedescriptor property.
You question is about how to upload an entity, one field of which is a file, right? If so, then you’ll have to do two REST API invocations. The first request will upload a file with the photo . It will be a POST request to the /files endpoint. This method will return you a JSON like this:
The id field is the identifier of the FileDescriptor entity.
Your another entity, say it’s name is MyEntity, will have a field photo with the FileDescriptor type. To create an instance of the entity with the reference to the FileDescriptor of just uploaded photo you’ll need to make a request like this /entities/myproj$MyEntity: