Field Dependency based on Image Field

[Tom.]

I've tried searching the forum but I can't seem to find anything on this, I have no doubt it's been asked before. I have an advert field, which is an image field that will only allow 1 image to be uploaded. I also have a advert url, which will only show and be required if the image field has an image. 

I've tried:

advert.count>0

advert>0

advert!=0

advert.count!=0

advert!=false

advert!='' 

Non of them seem to work. Anyone know how to do this?

[mr-fan]

Hi tom.

bad news are here: (files&images are not supported)

https://processwire.com/talk/topic/9841-field-dependency-on-image-field/#entry94527

but the good news are there: (go a little indirection)

https://processwire.com/talk/topic/9841-field-dependency-on-image-field/#entry94530

hope this helps regads mr-fan

[Tom.]

Damn,

Okay, thank you for the heads up mr-fan I'll have a look into this Concatenate field. Thanks alot!