I have written a custom field type which will allow users to upload a file (CSV). Upon submitting the file, the plugin needs to be able to read through it and then do its own thing (update database values).
There doesn't seem to be any code called on Joomla's end for custom field types, though. I have seen Components do similar things to what I'm doing, but Components have much more control over the backend. Is there any way for me to access the $_POST/$_FILES globals after the user uploads a file via custom field types?
To clarify, my problem isn't allowing the user to upload the file. It's being able to access it (no code is called after the user hits save). I have tried creating my own form within the field, but that doesn't work.
Joomla's documentation for this kind of thing is very lacking, and any help would be appreciated.