Grouping and displaying values in ReactJs

Question

I have grouped object inside an array according to specific property (in my case location.title).

let grouped = _.mapValues(
  _.groupBy(homes.items, "location.title"),
  x => x.map(y => _.omit(y, "location.title"))
);

Output result is as :

New York: (2) [{...}{...}]
Washington: (3)[{...}{...}{...}]

my Question is how can i map this output array and get output like this in React app.

Homes in New York : Here goes NewYork homes

Homes in Washington: Here goes Washington homes

Tholle · Accepted Answer · 2019-03-10 14:53:35Z

2

You can use Object.keys on the grouped object to get an array of all the keys, and then use map on that array to render them separately.

<div>
  {Object.keys(grouped).map(key => (
    <div key={key}>Homes in {key}: {grouped[key].join(', ')}</div>
  ))}
</div>

function App() {
  const grouped = {
    'New York': ['foo', 'bar'],
    Washington: ['foo', 'bar', 'baz']
  };

  return (
    <div>
      {Object.keys(grouped).map(key => (
        <div key={key}>Homes in {key}: {grouped[key].join(', ')}</div>
      ))}
    </div>
  );
}

ReactDOM.render(<App />, document.getElementById("root"));

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>

<div id="root"></div>

answered Mar 10, 2019 at 14:53

Tholle

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3 Comments

Malik Awan Over a year ago

so {grouped[key]} will pull out object inside particular array and i can passed down this object to React Component as props in order to display this with all its props like images, contents etc

Tholle Over a year ago

@IramAkhtar Yes, Object.keys(grouped) results in a new array with all the keys in grouped, so grouped[key] will be grouped['New York'] for the first iteration of map, and so on. If grouped[key] is an object, you can pass that down to another component as props if you like.

Malik Awan Over a year ago

my grouped[key] resulting another array containing objects of homes like this. (2) [{...}{...}] (3) [{...}{...}{...}] I need to display this array of objects along side of each location.

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