CODEWITHSUNDEEP
reactjs
Derek Hough
Derek Hough

Reputation: 45

How do i filter the array in object of array?

How do i filter roles in this array to return true when "Admin" is found?

const array = [{
    "country": "all",
    "roles": [
        "Normal",
        "Admin",
    ]
}]

Upvotes: -1

Views: 54

Answers (3)

JuneC
JuneC

Reputation: 69

1.Did u mean to return a boolean overall?

In Js es6, you could use .some() MDN web docs

it's nice and simple :)

const array = [{
    "country": "all",
    "roles": [
        "Normal",
        "Admin",
    ]
}, {
    "country": "test",
    "roles": [
        "Normal"
    ]
}]

const result = array.some(o => Boolean(o.roles.some(role => role === 'Admin')))

console.log(result) // return true

2.Or, did u mean that it returns a new array in which each roles become a boolean depending on having 'Admin' or not?

If it is, .some() works as well :)

Try below:

const array = [{
    "country": "all",
    "roles": [
        "Normal",
        "Admin",
    ]
}, {
    "country": "test",
    "roles": [
        "Normal"
    ]
}]

const result = array.reduce((acc, curr, index) => {
    const item = Object.assign({}, curr, { roles: curr.roles.some(o => o === 'Admin') })
    acc.push(item)
    return acc
}, [])

console.log(result)  // return true

or if it filter an array, my answer is the same as Tobias' :)

Upvotes: -1

razer
razer

Reputation: 134

  const array = [{
   "country": "all",
   "roles": [
    "Normal",
    "Admin",
   ]
   }]

    const val = array.map((a) => a.roles.includes('Admin'))
                  
    console.log(val) //return true

Upvotes: -1

Tobias S.
Tobias S.

Reputation: 23905

Use .filter() and .includes():

const admins = array.filter((u) => u.roles.includes("Admin"))

Upvotes: 2

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