ReactJS: How to solve mapping multiple object array

Question

Hi I'm new in ReactJS Framework. I have problem regarding how to get the value of sec1 object and sec2 object to the API Response. and how to render return the value to my html page.

I have here my constructor codes and my response data.

constructor(){
    super();
    this.state = {
        sec1: [],
        sec2: []
    }
}
componentDidMount() {

        axios.get('/api/community').then(response => {
           this.setState({
               sec1: response.data,
               sec2: response.data
           })
        })

    }

My Console Log

sec1: response.data[0].sec1[0] sec2: response.data[0].sec2[0] — Chris Adams
– Chris Adams, Commented Sep 13, 2018 at 14:20
it's should be sec1: response.data[0].sec1 and sec2: response.data[0].sec2 — Olivier Boissé
– Olivier Boissé, Commented Sep 13, 2018 at 14:33

Chris Adams · Accepted Answer · 2018-09-13 14:26:27Z

2

Difficult without a clearer view of the data, but something like this perhaps?

sec1: response.data[0].sec1[0]
sec2: response.data[0].sec2[0]

Not ideal, but you could try drilling down bit by bit with console.log statements until you get what you need.

To me your data looks like...

array

prop

array

json object

answered Sep 13, 2018 at 14:26

Chris Adams

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2 Comments

Olivier Boissé Over a year ago

why sec1: response.data[0].sec1[0] and not sec1: response.data[0].sec1 ?

Chris Adams Over a year ago

Because, or at least to me, the screenshot looks like sec1 is an array.

Shivam Gupta · Accepted Answer · 2018-09-14 13:54:37Z

0

Adding to the above answers:

Option 1:

sec1: response.data[0].sec1[0]
sec2: response.data[0].sec2[0]

Will store sec1 and sec2 as objects. Mainly used if you know that sec1 and sec2 can never have more than one object and you need to drill down into each object in your application.

Option2 :

sec1: response.data[0].sec1
sec2: response.data[0].sec2

will store sec1 and sec2 as arrays. Mainly used when sec1 and sec2 are collection of objects and you need to iterate over each object to display/manipulate the data.

Choose wisely depending on your use-case.

edited Sep 14, 2018 at 13:54

answered Sep 13, 2018 at 14:50

Shivam Gupta

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2 Comments

DevGe Over a year ago

hi shivam the option 2 is working to my html page.. however if i use the option it gives me error.

Shivam Gupta Over a year ago

If you post some code/details about the error, I can take a look at it.

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