how i can get data from nested array and get the result

January 8, 2022

const source = [
    {
      id: "1",
      data: {
          first_name: "Rian",
          last_name: "Nugraha"
      },
      school: {
        id: "1",
        data: "PLMK-JKT"
      },
    },
    {
      id: "2",
      full_name: "Ari Santoso",
      school: {
        id: "1",
        short_name: "GRSR",
        data: "JKT"
      },
    },
    {
      id: "3",
      data: {
        first_name: "Rahman",
        last_name: "Sunggara"
    },
    school: {
        id: "1",
        short_name: "GELM",
        data: "JKT"
      },
    },
    {
        id: "4",
        data: {
            first_name: "Rian",
            last_name: "Nugraha"
        },
        school: {
            id: "2",
            data: "PLMK-BDG"
        },
    },
  ]

so, I want to combine first_name and last_name into fullname of the nested array or combine short_name and data in school nested array but always undefined, the result like below:

{ name : ‘Rian Nugraha’, school_name: ‘PLMK-JKT }

>Solution :

Did using a ternary operator

const source = [
    {
      id: "1",
      data: {
          first_name: "Rian",
          last_name: "Nugraha"
      },
      school: {
        id: "1",
        data: "PLMK-JKT"
      },
    },
    {
      id: "2",
      full_name: "Ari Santoso",
      school: {
        id: "1",
        short_name: "GRSR",
        data: "JKT"
      },
    },
    {
      id: "3",
      data: {
        first_name: "Rahman",
        last_name: "Sunggara"
    },
    school: {
        id: "1",
        short_name: "GELM",
        data: "JKT"
      },
    },
    {
        id: "4",
        data: {
            first_name: "Rian",
            last_name: "Nugraha"
        },
        school: {
            id: "2",
            data: "PLMK-BDG"
        },
    },
  ]
  
  const resArray = source.map((el) => {
    let name = el.data? (el.data.first_name+" "+el.data.last_name): el.full_name;
    let school_name = el.school.short_name? (el.school.short_name+" "+el.school.data): el.school.data;
    const result = {
      name: name,
      school_name: school_name
    }
    return result;
  })
  
  console.log(resArray)