Filtering data using 'AND' condition of inputs given

Question

I am facing an issue where I should filter the data based on '&&' condition of inputs given.

The data to be filtered

let ssData={
         "0": {
             "OnPower": "no",
              "hazard": "no",
               "issues": "no",
               "OnGenerator": "no",
              "PermanentFuel": "no",
              "onDamage": "no"
      },
      "1": {
            "OnPower": "yes",
            "hazard": "yes",
            "issues": "no",
            "OnGenerator": "yes",
            "PermanentFuel": "no",
            "onDamage": "yes"
      },
      "2": {
            "OnPower": "no",
            "hazard": "no",
            "issues": "no",
            "OnGenerator": "yes",
            "PermanentFuel": "yes",
            "onDamage": "no"
      },
      "3": {
            "OnPower": "yes",
            "hazard": "yes",
            "issues": "yes",
            "OnGenerator": "yes",
            "PermanentFuel": "yes",
            "onDamage": "yes"
      },
      "4": {
            "OnPower": "no",
            "hazard": "yes",
            "issues": "no",
            "OnGenerator": "no",
            "PermanentFuel": "no",
            "onDamage": "yes"
      },
      "5": {
            "OnPower": "yes",
            "hazard": "no",
            "issues": "no",
            "OnGenerator": "yes",
            "PermanentFuel": "no",
            "onDamage": "no"
      },
      "6": {
            "OnPower": "yes",
            "hazard": "no",
            "issues": "yes",
            "OnGenerator": "no",
            "PermanentFuel": "no",
            "onDamage": "yes"
      }
}

input to filtering is :

 let filterData= ["OnPower","hazard","OnGenerator"]

The filtering should be done by comparing with "yes" value and using "AND" condition from input

export function filterWithMultipleIssueData(ssData, filterData){
   let filteredSSData=[]
    ssData.map((row,index)=>{
        filterData.map((field)=>{
            if(row[field] == 'yes'){
                 filteredSSData.push(row.toJS())
            }
        })
    })
    return filteredSSData
}

In the above function , Im getting filteredSSData using 'OR' condition.(OnPower 'OR' hazard 'OR' OnGenerator)

The Comparision should be with OnPower 'AND' hazard 'AND' OnGenerator

The expected Output is:  

{
       "1": {
            "OnPower": "yes",
            "hazard": "yes",
            "issues": "no",
            "OnGenerator": "yes",
            "PermanentFuel": "no",
            "onDamage": "yes"
      },
      "3": {
            "OnPower": "yes",
            "hazard": "yes",
            "issues": "yes",
            "OnGenerator": "yes",
            "PermanentFuel": "yes",
            "onDamage": "yes"
      },
}

Answer 1

Instead of using map on filtered you might wana use every instead:

 function filterYes(data, keys){
   return data.filter(data => keys.every(key => data[key] === "yes"));
 }

I guess your data is an array (cause you call map on it) otherwise its a bit more complicated:

 function filterYes(data, key){
  return Object.assign({}, ...Object.entries(data).filter(([key, value]) =>
     keys.every(key => value[key] === "yes")
 ).map(([key, value]) => ({[key]: value}));
}

Answer 2

Here's how to do it with higher-order functions:

• map
• filter
• reduce

 let ssData={ "0": { "OnPower": "no", "hazard": "no", "issues": "no", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "no" }, "1": { "OnPower": "yes", "hazard": "yes", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "no", "onDamage": "yes" }, "2": { "OnPower": "no", "hazard": "no", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "yes", "onDamage": "no" }, "3": { "OnPower": "yes", "hazard": "yes", "issues": "yes", "OnGenerator": "yes", "PermanentFuel": "yes", "onDamage": "yes" }, "4": { "OnPower": "no", "hazard": "yes", "issues": "no", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "yes" }, "5": { "OnPower": "yes", "hazard": "no", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "no", "onDamage": "no" }, "6": { "OnPower": "yes", "hazard": "no", "issues": "yes", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "yes" } }; let filterData= ["OnPower","hazard","OnGenerator"]; function filterDataFunction(dataToFilter, filterOptions) { return Object.getOwnPropertyNames(dataToFilter) .map(elem => ssData[elem]) // convert object to array .filter(data => filterOptions .map(filter => data[filter] === 'yes') // filter data where specified answers equal yes .reduce((first, second) => first && second)); // perform && on all elements of the array } console.log(filterDataFunction(ssData, filterData));

Answer 3

You don't have an Array, but you can do this with Object.entries().filter().reduce() .

let result = Object.entries(ssData)
  .filter(([_, o]) => filterData.every(k => o[k] === "yes"))
  .reduce((res, [k, o]) => Object.assign(res, {[k]: o}), {});

---

Click for demo:

 let ssData = { "0": { "OnPower": "no", "hazard": "no", "issues": "no", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "no" }, "1": { "OnPower": "yes", "hazard": "yes", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "no", "onDamage": "yes" }, "2": { "OnPower": "no", "hazard": "no", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "yes", "onDamage": "no" }, "3": { "OnPower": "yes", "hazard": "yes", "issues": "yes", "OnGenerator": "yes", "PermanentFuel": "yes", "onDamage": "yes" }, "4": { "OnPower": "no", "hazard": "yes", "issues": "no", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "yes" }, "5": { "OnPower": "yes", "hazard": "no", "issues": "no", "OnGenerator": "yes", "PermanentFuel": "no", "onDamage": "no" }, "6": { "OnPower": "yes", "hazard": "no", "issues": "yes", "OnGenerator": "no", "PermanentFuel": "no", "onDamage": "yes" } }; let filterData= ["OnPower","hazard","OnGenerator"]; let result = Object.entries(ssData) .filter(([_, o]) => filterData.every(k => o[k] === "yes")) .reduce((res, [k, o]) => Object.assign(res, {[k]: o}), {}); console.log(result);

Answer 4

I see here multiple answers. One close to the code structure you used!

function filterWithMultipleIssueData(ssData, filterData){
   let filteredSSData= [];

      Object.keys(ssData).forEach((key)=> {
       let row = ssData[key];

       let filtered =  filterData.filter(field => row[field] == 'yes');  
       if(filtered.length == filterData.length) //filterData is the array you provided 
         filteredSSData.push(row);
    }); 
}