使用react-router的全局数据

Question

How do I maintain a central/global object for some data with react-router?

Let's say my React site has 20 different routes. 15 out of those 20 routes need one JSON file from the server that almost never changes. I hate having to GET "/api/mydata" for every new URL/route.

I guess I can save the data in React's context , but that seems hacky and may not even work. Is there a more elegant solution for sharing data between react-router components?

Edit: I partially solved this by creating a Data.js file:

export var myData = function(cb) {
  ajax('GET', '/api/mydata', resp => {
    myData = function() {
      return cb(resp);
    };
    cb(resp);
  });
};

and use it like this:

myData(data => data.map(/* ...use the data */));

That way the data is guaranteed to only be fetched once per lifecycle.

Answer 1

Arrr... if you don't want to use redux or flux, you can create a singleton like this in a new js file

let appState = {};
export default appState;

First do ajax to fill the data into this singleton. Then import it to everywhere you want the data.