Filter parent object based on child object containing value-CodePudding

I have an object, benefitGroups that contains benefits. Each item in benefits contain an array of coverageLineIds. How can I filter the benefitGroups object to only contain benefits that include ID 1 in the coverageLineIds array?

const benefitGroups=  [
     {
      id: 1,
      name: "Benefit Group A",
      benefits: {
         id: 1,
         benefitGroupId: 1,
         name: "Benefit Z",
         coverageLineIds: [1, 2]
      },
      {
         id: 2,
         benefitGroupId: 1,
         name: "Benefit X",
         coverageLineIds: [1, 2]
      },
      {
         id: 3,
         benefitGroupId: 1,
         name: "Benefit Y",
         coverageLineIds: [1, 2]
      },
    },
     {
      id: 2,
      name: "Benefit Group B",
      benefits: {
         id: 4,
         benefitGroupId: 2,
         name: "Benefit I",
         coverageLineIds: [1]
      },
      {
         id: 5,
         benefitGroupId: 2,
         name: "Benefit J",
         coverageLineIds: [1]
      },
      {
         id: 6,
         benefitGroupId: 2,
         name: "Benefit H",
         coverageLineIds: [1]
      },
    },
     {
      id: 3
      name: "Benefit Group C",
      benefits: {
         id: 7,
         benefitGroupId: 3,
         name: "Benefit D",
         coverageLineIds: [3, 4]
      },
      {
         id: 8,
         benefitGroupId: 3,
         name: "Benefit E",
         coverageLineIds: [3, 4]
      },
      {
         id: 9,
         benefitGroupId: 3,
         name: "Benefit F",
         coverageLineIds: [3, 4]
      },
    },
]

In the above example, I would want to return Benefit Group A and B as their benefits contain coverage line IDs of 1.

CodePudding user response：

First of all, your JSON is invalid. Your benefits should be in array.

Once, fixed here is what you're looking for:


const id = 1;

const result = benefitGroups.filter((group) => {
  return group.benefits.some((benefit) => benefit.coverageLineIds.includes(id));
});

CodePudding user response：

const benefitGroups=  [
     {
      id: 1,
      name: "Benefit Group A",
      benefits: [{
         id: 1,
         benefitGroupId: 1,
         name: "Benefit Z",
         coverageLineIds: [1, 2]
      },
      {
         id: 2,
         benefitGroupId: 1,
         name: "Benefit X",
         coverageLineIds: [1, 2]
      },
      {
         id: 3,
         benefitGroupId: 1,
         name: "Benefit Y",
         coverageLineIds: [1, 2]
      }],
    },
     {
      id: 2,
      name: "Benefit Group B",
      benefits: [{
         id: 4,
         benefitGroupId: 2,
         name: "Benefit I",
         coverageLineIds: [1]
      },
      {
         id: 5,
         benefitGroupId: 2,
         name: "Benefit J",
         coverageLineIds: [1]
      },
      {
         id: 6,
         benefitGroupId: 2,
         name: "Benefit H",
         coverageLineIds: [1]
      }],
    },
     {
      id: 3,
      name: "Benefit Group C",
      benefits: [{
         id: 7,
         benefitGroupId: 3,
         name: "Benefit D",
         coverageLineIds: [3, 4]
      },
      {
         id: 8,
         benefitGroupId: 3,
         name: "Benefit E",
         coverageLineIds: [3, 4]
      },
      {
         id: 9,
         benefitGroupId: 3,
         name: "Benefit F",
         coverageLineIds: [3, 4]
      }],
    },
]

var filteredBenefitGroups = benefitGroups.filter((group) => {
    let benefits = group.benefits.filter(benefit => benefit.coverageLineIds.indexOf(1) !== -1);
    return benefits.length ? true : false;
});
console.log(filteredBenefitGroups);