Using fetch to render json data in react app - json

Question

I am trying to render some JSON about a person's location from an api in my react app.
I am using isomorphic-fetch to access the data from the API I can add the base test in and it correctly logs the data using below.
require('isomorphic-fetch');
require('es6-promise').polyfill();
var url = 'http://localhost:3000/api/data'
fetch(url)
.then(function(response) {
if (response.status >= 400) {
throw new Error("Bad response from server");
}
return response.json();
})
.then(function(data) {
console.log(data);
});
What i'm trying to work out is how I can take this response and render it in my component which currently looks like this (in this example code below data is coming from local json file so i need to merge them together).
I've attempted to set up componentDidMount but could get my head around the syntax so it kept breaking, I also checked out redux actions but that exploded my brain.
const personLoc = Object.keys(data.person.loc).map((content, idx) => {
const items = data.person.loc[content].map((item, i) => (
<p key={i}>{item.text}</p>
))
return <div key={idx}>{items}</div>
})
export default function PersonLocation() {
return (
<div className="bio__location">
{personLoc}
</div>
)
}

Answer 1

componentDidMount should setState:
componentDidMount() {
var that = this;
var url = 'http://localhost:3000/api/data'
fetch(url)
.then(function(response) {
if (response.status >= 400) {
throw new Error("Bad response from server");
}
return response.json();
})
.then(function(data) {
that.setState({ person: data.person });
});
}
The render component should map the state:
const personLoc = Object.keys(this.state.person.loc).map((content, idx) => {
const items = this.state.person.loc[content].map((item, i) => (
<p key={i}>{item.text}</p>
))
return <div key={idx}>{items}</div>
})