Review pathing functions

[davidyell]

Need some method which will return,

• A full path name to the folder
• A complete filename with and without prefix
• Component parts of the path

[davidyell]

Should probably come after #16 so that I know nothing is broken or regressed.

[davidyell]

Need to think about multiple file uploads.

The config exists to allow multiple upload fields per model, but the pathing doesn't. So it'll need to understand some use-cases.

• User is uploading the same image into two different fields in the same Table
• Different images into different fields

Does the path need to be a different UUID for each file? Or include the field in the path?

I think it's best to include the field in the path, to help differentiate different files uploaded to the same table.

[davidyell]

Why does _buildPath() take $field, $entity and also $entity->get($field)? Surely the last argument can be removed and processed inside the method.

[davidyell]

Sounds like it needs it's own class. So that an instance of the ProfferPath or something can be created and passed around, with various accessor methods.

[davidyell]

Started work in the features/pathing branch

[davidyell]

Completed.