@maieva As @windyshores has already stated using OJ and almond milk to get calcium is not really getting food based calcium. It's just food with calcium added to it. Like sprinkling a powdered calcium supplement on your food. Also, almonds are quite high in oxalates which bind with calcium and other minerals and therefore interfere with your bodies utilization of those minerals. There seems to be disagreement as to how much oxalates interfere in that way but I think a conservative view might me to keep oxalates low. As in daily use of almond milk might not be a good way to get calcium.

Personally I think people are over reacting to possible dangers of supplements to the point that many people with osteoporosis may not be getting enough calcium. Sure it's probably best to get any nutrient from food but if you do not get 1000-1200mg of calcium in your diet, my thought is add the calcium in with a supplement to get it to that level.
Of course there are those that believe you don't need all that calcium anyway but I'll leave that one for another day.