ios - Add to cart functionality - Core data -


i trying create best possible design following scenario.

category -> list of products

in tableview list of products shown, user has option add product cart.
so, whenever user opens cart, can see of products has added.

my question how can best setup functionality in core data? best solution maintain separate cart entity? or relationship right way it?, if yes can please tell me kind relationship should between cart & product?

make cart entity suggested to-many relationship cartproduct entity. cart entity can contain 'meta' information purchase , cartproduct link actual product entity.

the type of relationship between cartproduct entity , product entity 1-1, in xcode, in data model editor, cartproduct entity selected, sure add product entity relationship in relationships section , leave to-many relationship setting unchecked. values this:

  • relationship: product
  • destination: product
  • inverse: cartproduct

then, select product entity in editor , double check relationship exists looks (again, make sure to-many relationship setting unchecked):

  • relationship: cartproduct
  • destination: cartproduct
  • inverse: product

the above should started.


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