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A New Chapter for MagicMirror: The Community Takes the Lead
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What's the best way to fetch JSON data?

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  • C Offline
    CreepinJesus
    last edited by Feb 18, 2021, 2:26 PM

    Hi all,

    I’m hoping some of your developer knowledge can help me out here.

    What is the best/recommended way to retrieve JSON (or other) data from external APIs? Up to now I’ve been using fetch() in the main module .js file, but after hitting some CORS snags, I’m wondering if there is a better method?

    Thanks.

    S 1 Reply Last reply Feb 18, 2021, 2:32 PM Reply Quote 0
    • C Offline
      CreepinJesus
      last edited by Feb 18, 2021, 11:43 PM

      That didn’t help, but I’ve fixed the CORS issue by allowing requests from that origin on the server in question anyway.

      Kind of digressing from the original question but if fetch does the job then I suppose it’s good enough!

      1 Reply Last reply Reply Quote 1
      • S Offline
        sdetweil @CreepinJesus
        last edited by sdetweil Feb 18, 2021, 3:52 PM Feb 18, 2021, 2:32 PM

        @creepinjesus cors has nothing to do w fetch. request and axios will have the same problems.
        thats the server side protecting itself

        i generally dont use the builtin .json() methods provided by fetch and others, cause i dont like the error handling of the actual data transfer part.

        i use JSON.parse() with try/catch around it

        or JSON.stringify() to get the json text

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        C 1 Reply Last reply Feb 18, 2021, 5:45 PM Reply Quote 0
        • C Offline
          CreepinJesus @sdetweil
          last edited by Feb 18, 2021, 5:45 PM

          @sdetweil said in What's the best way to fetch JSON data?:

          @creepinjesus cors has nothing to do w fetch

          No, that’s fair enough. Just checking it’s not the fetch method itself.

          Is it possible then to even access JSON that’s being blocked by CORS using some other method? Would making the request from node_helper make a difference?

          The data is being served on a local server and I can use curl or a browser to access it without issue; just not from a script in the browser (of course).

          S 1 Reply Last reply Feb 18, 2021, 5:51 PM Reply Quote 0
          • S Offline
            sdetweil @CreepinJesus
            last edited by Feb 18, 2021, 5:51 PM

            @creepinjesus is the address: in config.js “localhost”?

            try changing to “0.0.0.0”

            or vice versa

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            1 Reply Last reply Reply Quote 0
            • C Offline
              CreepinJesus
              last edited by Feb 18, 2021, 11:43 PM

              That didn’t help, but I’ve fixed the CORS issue by allowing requests from that origin on the server in question anyway.

              Kind of digressing from the original question but if fetch does the job then I suppose it’s good enough!

              1 Reply Last reply Reply Quote 1
              • S Offline
                sdetweil
                last edited by Feb 19, 2021, 2:59 AM

                @creepinjesus when the server is remote there are urls u can use to proxy your real url

                search for cors proxy

                Sam

                How to add modules

                learning how to use browser developers window for css changes

                1 Reply Last reply Reply Quote 0
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