ZCCADCDEDB567ABAE643E15DCF0974E503Z 删除每个子文档中的数组项

Question

I have an User (click) Model with a cart where products are stored (just the id). If I want to delete a product from the Shop, the product should be also deleted from every users cart.

Therefore I tried this code:

User.update({ $pull: {'cart.items': {productId: product._id }}});

Even if I want to delete the product from a specific User with findByIdAndUpdate, it doesn't work:

User.findByIdAndUpdate(user._id, { $pull: {'cart.items': {productId: product._id }}});

Answer 1

just try:

User.update({},{ $pull: {'cart.items': {productId: product._id }}});