How i can filter and return a nested array of object?

Question

someone can help me? i have a data structure like as:

contracts: [ 
0: {closedRequest: [{id: ... , name: ... } , {id: ... , name: ... }, {id: ... , name: ... }]},
1: {closedRequest: [{id: ... , name: ... } , {id: ... , name: ... }, {id: ... , name: ... }]},

]

Now i would filter this object for delete element in closedRequest that have a determined Id. I try to use with filter, but array not change.

How i can do it?

Example, i want exclude all element that have id (on closedRequest) = 3

so, if i have this structure:

contracts: [ 
0: {closedRequest: [{id: 2 , name: "a"} , {id: 3 , name: "b"}, {id: 4 , name: "c" }]},
1: {closedRequest: [{id: 2 , name: "a"} , {id: 3 , name: "b"}, {id: 4 , name: "c" }]},

]

i want have:

contracts: [ 
0: {closedRequest: [{id: 2 , name: "a"}  {id: 4 , name: "c" }]},
1: {closedRequest: [{id: 2 , name: "a"}  {id: 4 , name: "c" }]},

]

Example of my code:

client.contracts.forEach((c) =>
          c.closedRequests.filter((cr) => cr.requestID != requestID)
        );

i want have same object, but with filed of closedRequest edited.

Thanks

Answer 1

Assuming each item of contracts array consists of many fields, you can use array.map to transform the old array into a new one and array.filter in order to filter a nested array:

 let contracts = [ { closedRequest: [{id: 2 , name: "a"} , {id: 3 , name: "b"}, {id: 4 , name: "c" }] }, { closedRequest: [{id: 2 , name: "a"} , {id: 3 , name: "b"}, {id: 4 , name: "c" }] } ]; let filteredContracts = contracts.map(contract => ({ ...contract, closedRequest : contract.closedRequest.filter(x => x.id !== 3) })); console.log(filteredContracts);