As a customer/visitor: edit my cart if I change my mind:

[yingshuyan]

Implementation:

1. change the quantity of a product in my cart.
   • [x] BackEnd: Create app.put route to change qty to cart model
   • [x] FrontEnd: Create thunk function to send put request to server and update redux store state
   • [x] FrontEnd: Cart Component be able to re-render when item qty is changed.

2.remove a product in my cart.

• [x] BackEnd: Create app.delete route to delete instance from the cart model
• [x] FrontEnd: Create thunk function to send delete request to server and update redux store state
• [x] FrontEnd: Cart Component be able to re-render when the item is removed

3.No one else should be able to edit my cart except me.

• [x] login user userId specific

• [ ] non log in user specific

[yingshuyan]

finish with login user userId specific(it only renders login user's cart)