My 18 month old daughter has stopped eating everything that is good for her.
If she won't eat for meal, I will keep it for when she is hungry but then she STILL won't eat it. She won't even touch meat or any kid but I was able to get her to eat spaghetti with hamburger and veggies. That is the only thing she will eat.
We've tried giving her more attention when she eats and that didn't work so we tried no attention and that didn't work as well
Any idea's on how to get her to eat?

I wouldn't worry too much at this point... if she is acting fine, is content, etc. Toddlers often go through phases of eating only certain foods for awhile.

Keep offering a couple of different things every now and then, along with what you know she will eat, but don't push it... keep it matter of fact. You don't want meal times to become stressful and you certainly don't want to have a battle of wills with a toddler! It probably won't be too long before other things will interest her again.