Accessing Nested Values

[xseano]

Hi again Typicode, xD

I was a bit confused about accessing deep properties in your documentation. My question was, how would I access an array within the main object?

For example, here is my db.json:

{ "users": [ { "id": "hhhhadjklsajkdlaskjd", "unm": "sean", "email": "sean.o@mac.com", "pwd": "black", "todos_list1": [ { "id": 4, "title": "asd", "descrp": "asd" } ], "todos_list2": [ { "id": 1, "title": "Book", "descrp": "Read Outliers" }, { "id": 2, "title": "sadasd", "descrp": "Reassasdasdasdssliers" } ], "todos_yo": [

In which I can access the main object under http://localhost:3000/users/hhhhadjklsajkdlaskjd , but since POST with arrays is not supported, how would I be able to access an array like "todos_list1" and view what objects are stored inside this array?

Ex (When I can view todos_list1 specifically, I would see this):
{ "id": 4, "title": "asd", "descrp": "asd" }

Please let me know, or if there is another way to POST objects to an array.

Thanks!

[typicode]

Hi @xseano,

There's no way to just "pick" todos_list1 with this db.json structure.

If possible I would recommend this kind of db.json:

{  
   "users":[  
      {  
         "id":1,
         "unm":"sean"
      }
   ],
   "todos":[  
      {  
         "id":1,
         "name":"list1",
         "items":[  
            {  
               "title":"asd",
               "descrp":"asd"
            }
         ],
         "userId":1
      },
     {  
         "id":2,
         "name":"list2",
         "items":[  
            {  
               "title":"Book",
               "descrp":"Read Outliers"
            },
            {  
               "title":"sadasd",
               "descrp":"Reassasdasdasdssliers"
            }
         ],
         "userId":1
      }
   ]
}

This way you can do:

GET /users/1?_embed=todos # get user 1 + todos
GET /users/1/todos # get all todos for user 1
GET /users/1/todos?name=list1 # get todo for list 1

To create a new todo list, you now have a dedicated URL:

POST /users/1/todos # payload: { name: 'list3', items: [] }

To update a todo list (all the items will be replaced by the payload, but depending of the size of it, it can be acceptable):

PUT /todos/1 # payload { name: 'list1', items: [ { title: "new item" } ] }

You may want to have some even finer grained URLs:

{
  users: []
  lists: [
    { id: 1, userId: 1 }
  ],
  items: [
    { id: 1, listId: 1 }
  ]
}

Then you would get:

/users/1
/users/1/lists
/lists/1
/lists/1/items

For inspiration, you can have a look at the doc, posts with comments are bit like users and todos.
And you can also experiment with requests live on https://github.com/typicode/jsonplaceholder

Hope it helps.

[xseano]

WOW, this definitely helps -- thank you so much!!! 👍

[SquealerAD]

if i understand correctly this -> POST /users/1/todos # payload: { name: 'list3', items: [] } will update all todos objects in the array no metter what is userId. how can i update specific todo list for specific user?

[virgil-av]

posting POST /users/1/todos this will error out and not actually post in /users

[fatemehqasemkhani]

@typicode Saved my day, thanks

[archana-ragam]

How to access the nested data from json data using json-server.
This is my json data
{
"flightDetails": [
{
"id": 1,
"flight_name": "INDIGO",
"flight_departs": "8:00",
"flight_arrives": "9:00",
"flight_from": "New",
"flight_to": "Hyderabad",
"flight_date": "13/6/2023",
"flight_img": "/images/airindia.jpg",
"flight_classes": [
"Business",
"Premium economy",
"first",
"economy"
],

"services": [
{
"id": 2,
"service_name": "seat allocation",
"types": [
{
"Seat": "Extra Leg Room",
"cost": "rs/- 1500"
},
{
"Seat": "Front of Aircraft",
"cost": "rs/- 1000"
}
]
},
{
"id": 1,
"service_name": "Baggage",
"types": [
{
"Baggage_type": "Overweight",
"Baggage_limit": "0-3kgs",
"Baggage_cost_1kg": "rs/-200"
},
{
"Baggage_type": "Checked Bags ",
"Baggage_limit": "15kgs",
"Baggage_cost_1kg": "rs/-390"
}
]
},
{
"id": 3,
"service_name": "Baggage",
"types": [
{
"Baggage_type": "Overweight",
"Baggage_limit": "0-3kgs",
"Baggage_cost_1kg": "rs/-200"
},
{
"Baggage_type": "Checked Bags ",
"Baggage_limit": "15kgs",
"Baggage_cost_1kg": "rs/-390"
}
]
}
],
"passenger": [
{
"id": 1,
"passenger_seat_number": "20A",
"passenger_name": "RAGAM ARCHANA",
"passenger_address": "Hyd,Telangana",
"passenger_passport_details": {
"Citizen": "India",
"place": "Hyd,Telangana",
"date_of_birth": "03-08-2000",
"expire_date": "24/07",
"gender": "F"
}
}
]
}
]
}