Filter array of objects where one field in object is array

Question

 data:[
        {
           id:1,
           tags:['TagA','TagB','TagC']
         },
         {
           id:2,
           tags:['TagB','TagD']
         },
         {
            id:3,
            tags:['tagE','tagC']
         }
      ]

filterCondition:{tags:['TagA','TagB']}

Expected Output: [
                   {
                     id:1,
                     tags:['TagA','TagB','TagC']
                   },
                   {
                     id:2,
                     tags:['TagB','TagD']
                   }
                 ]

Is there a possible way to achieve this in typescript using filter method? It is possible when tags field is not an array but when it is in array the code breaks.

I tried but it fails:

   data.filter(o => Object.keys(filterCondition).every(k => filterCondition[k].some(f => o[k] === f)));

typescript is superset of js, so js solution will work because it is js — llamerr
– llamerr, Commented Dec 17, 2018 at 12:40

RBG · Accepted Answer · 2018-12-17 13:36:28Z

3

you can use filter and includes

const data = [{id:1,tags:['TagA','TagB','TagC']},{id:2,tags:['TagB','TagD']},{id:3,tags:['tagE','tagC']}];
      
const filterData = tag => data.filter(d => tag.some(t => d.tags.includes(t)));

console.log(filterData(['TagA', 'TagB']));

Little edit in the form of conditionArray mentioned:

    let filterArray={tags:['TagA','TagB']}

    const data = [{id:1,tags:['TagA','TagB','TagC']},{id:2,tags:['TagB','TagD']},{id:3,tags:['tagE','tagC']}];

    output= data.filter(o => Object.keys(filterArray).every(d => filterArray[d].some(t => o[d].includes(t))));

edited Dec 17, 2018 at 13:36

RBG

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answered Dec 17, 2018 at 12:38

Artyom Amiryan

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4 Comments

RBG Over a year ago

I want to filter it based on 'filterCondition' array, hence includes wont work when filterCondition:{tags:['tagA','tagB']}

Artyom Amiryan Over a year ago

it is based on that array as you described in question, please explain what you mean and give example

RBG Over a year ago

Artyom Amiryan ,please see the edited example. If any of the tags in the condition array is present in the object, then that object should be there in the ouput

Artyom Amiryan Over a year ago

@RishabhBharatGada I have updated my example, please check if is it what you need ?

Muni Kumar Gundu · Accepted Answer · 2018-12-17 14:03:50Z

2

const s = {
  data: [{
      id: 1,
      tags: ['TagA', 'TagB', 'TagC']
    },
    {
      id: 2,
      tags: ['TagB', 'TagD']
    },
    {
      id: 3,
      tags: ['tagE', 'tagC']
    }
  ],
  filterCondition: {
    tags: ['TagA', 'TagB']
  }
};

console.log(s.data.filter(a => s.filterCondition.tags

  .some(s => a.tags.join(',').includes(s))));

answered Dec 17, 2018 at 14:03

Muni Kumar Gundu

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