CODEWITHSUNDEEP
javascriptarraysjsonreactjs
Eik Hunter
Eik Hunter

Reputation: 87

Map local .json data in React

I have a local .json file formated below

    {
  "results": [
    {
      "id": 1,
      "title": "2 bedroom apartment to rent",
      "location": "30 South Colonnade London E14 5EZ",
      "description": "The building offers a communal lifestyle which consists of a large lounge area with dining room, working space, TV lounge, gym, stylish meeting rooms, free table tennis, free WIFI and a spacious communal roof terrace. Local transport includes Canning Town DLR and Jubilee Line (0.1 miles). Argo Apartments is managed by Grainger plc, one of the UK's leading professional landlords with over 100 years experience.",
      "price": "1,800",
      "beds": 2,
      "bathrooms": 1,
      "landlord": "Hamptons International Lettings",
      "images": ["image1", "image2"]
    },
    {
      "id": 2,
      "title": "2 bedroom flat to rent",
      "location": "Textile Building, Chatham Place, Hackney, London, E9",
      "description": "SHORT LET - Forming part of the new eagerly awaited Textile Building in Hackney Central E8, this stunning two double bedroom property has been finished to the highest standard, featuring two modern fitted bathrooms (one en-suite), two equal double bedrooms, spacious open plan reception with brand new integrated kitchen, exposed brickwork and communal underground bike storage.",
      "price": "2,400",
      "beds": 2,
      "bathrooms": 1,
      "landlord": "Stirling Ackroyd, Hackney",
      "images": ["image1", "image2"]
    },
    {
      "id": 3,
      "title": "3 bedroom apartment to rent",
      "location": "Sixth Floor Tower Building 11 York Road London SE1 7NX",
      "description": "A fantastic three bedroom apartment set in this popular development close to Vauxhall and Stockwell tube stations. The apartment is neutrally decorated throughout and is available either furnished or unfurnished. Residents will enjoy the plethora of shops, bars and restaurants and leisure activities in this popular part of London as well as the excellent commuter links towards Central London.",
      "price": "2,050",
      "beds": 3,
      "bathrooms": 2,
      "landlord": "Regent Letting and Property Management",
      "images": ["image1", "image2"]
    }
  ],
  "newResults" : [
      {
      "id": 4,
      "title": "2 bedroom flat to rent",
      "location": "Conway Street, Fitzrovia, W1T",
      "description": "Complete is delighted to market this newly renovated period property situated on the corner of Fitzroy Square in the heart of Fitzrovia, W1. The property is located on the ground floor and comes with 2 double bedrooms, shower room, open plan living and kitchen area. The kitchen is fully fitted with Siemens appliances and Duravit fittings in the bathroom. This apartment has high ceiling and retains its original period features. Located on the corner of this garden square this development was built in the 18th Century and benefits from being in the heart of vibrant London whilst also being a quiet residential area.",
      "price": "1,500",
      "beds": 2,
      "bathrooms": 1,
      "landlord": "Barnard Marcus Lettings",
      "images": ["image1", "image2"]
    }  
  ]
}

I want to be able to call the relevent information mapped to a component as below

class ResultsLists extends React.Component {
  constructor(props) {
    super(props)

    this.state = {
      results: resultsData
    }
  }

  render() {
    const results = this.state.results.results.map((result) =>
      <li>{result}</li>
    );

    return (
      <div className="rst-List">
        <ul className="rst-List_Items">
          {results}
        </ul>
      </div>
    )
  }
}

I can't seem to get it too work and am getting the error - Objects are not valid as a React child. There seems to be a varying variety as to why this isn't working, wondered whether someone could sanity check.

Upvotes: 1

Views: 6310

Answers (1)

Colin Ricardo
Colin Ricardo

Reputation: 17239

You're mapping over the results, but then you're putting the whole result object into the JSX.

This is an example of how to map over data:

const someData = [{ name: "Colin" }, { name: "Ricardo" }];

const App = () => {
  const temp = someData.map(o => <li>{o.name}</li>);

  return (
    <div>
      <ul>{temp}</ul>
    </div>
  );
};

Note that we have {o.name} and not just {o}.

Working example here.

So in your case, you need something like:

const results = this.state.results.results.map((result) =>
  <li>{result.title}</li>
);

Upvotes: 1

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