filter return combined matches

July 11, 2022

arr = [{name: "tom", tools:["spanner", "hammer", "screwdriver"]}, 
{name: "john", tools:["Mallet", "hammer", "screwdriver"]},
{name: "phil", tools:["Mallet", "Drill", "screwdriver"]}]


private filterObjectArray(arr: any, filterArr: any): any {
  return arr.filter((el: any) =>
    filterArr.some(
      (f: any) =>
        el.tools.toString()?.toLowerCase().indexOf(f.name?.toLowerCase()) >= 0
    )
  );
 }

My filter is similar to the above, at the moment if my filter returned filterArr = [{name: "screwdriver"}, {name: "hammer"}] then all objects would be returned as they all have at least one match in screwdriver.

However, how do I make it that only objects that has both filter properties display e.g. in the above I expect only the two objects tom and john return as they both have a screwdriver and hammer, whereas phil only has a screwdriver .

>Solution :

Here is a solution in JS. You can use every here to check if that every filter is included in the tools array

let arr = [{name: "tom", tools:["spanner", "hammer", "screwdriver"]}, 
{name: "john", tools:["Mallet", "hammer", "screwdriver"]},
{name: "phil", tools:["Mallet", "Drill", "screwdriver"]}]

let filterArr = [{name: "screwdriver"}, {name: "hammer"}]

let res = arr.filter(({tools}) => filterArr.every(({name}) => tools.includes(name)))

console.log(res)