I need to add a code, number or reference to each image in my gallery.
Please notice that this code must be unique, I mean gallery cant have 2 equal ones...
I need this for a car image gallery and this field is for the license plates.
Since we don't want repeated images of the same car, people must type the license plate and if an image of that car is already uploaded, then the upload of the new image will not be possible...
Can we make something like this?
