Sending files in Reactjs Dropzone using multipart/form-data












0














I am working on an React application using a Dropzone npm package, which allows users to select multiple files. I would need to send these files as a multipart/form-data to my web service.



I don't have Form to post the data, I am using the an Ajax post request to send files to my WCF service.



I have configured the WCF to receive files as stream and I can successfully send files via PostMan as form-data in the body. But just trying to figure out how I can send my Dropzone files as multipart/form-data in the react app.



Any input would be appreciated.










share|improve this question



























    0














    I am working on an React application using a Dropzone npm package, which allows users to select multiple files. I would need to send these files as a multipart/form-data to my web service.



    I don't have Form to post the data, I am using the an Ajax post request to send files to my WCF service.



    I have configured the WCF to receive files as stream and I can successfully send files via PostMan as form-data in the body. But just trying to figure out how I can send my Dropzone files as multipart/form-data in the react app.



    Any input would be appreciated.










    share|improve this question

























      0












      0








      0







      I am working on an React application using a Dropzone npm package, which allows users to select multiple files. I would need to send these files as a multipart/form-data to my web service.



      I don't have Form to post the data, I am using the an Ajax post request to send files to my WCF service.



      I have configured the WCF to receive files as stream and I can successfully send files via PostMan as form-data in the body. But just trying to figure out how I can send my Dropzone files as multipart/form-data in the react app.



      Any input would be appreciated.










      share|improve this question













      I am working on an React application using a Dropzone npm package, which allows users to select multiple files. I would need to send these files as a multipart/form-data to my web service.



      I don't have Form to post the data, I am using the an Ajax post request to send files to my WCF service.



      I have configured the WCF to receive files as stream and I can successfully send files via PostMan as form-data in the body. But just trying to figure out how I can send my Dropzone files as multipart/form-data in the react app.



      Any input would be appreciated.







      javascript reactjs react-native dropzone.js react-dropzone






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 at 7:18









      theITvideos

      58411024




      58411024
























          1 Answer
          1






          active

          oldest

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          2















          I don't have Form to post the data




          Why not? As shown in the docs here you need to create a basic form like:



          <form action="/file-upload"
          class="dropzone"
          id="my-awesome-dropzone">
          <input type="file" name="file" />
          </form>


          In case you create Dropzone programmatically, that should already be present.



          Having that, sending the Files via Ajax is easy, since all you need to do is:



          //create a FormData Object
          //that will care about all
          //the mimetypes etc
          const fd = new FormData(document.getElementById('my-awesome-dropzone'));

          fetch(<url>, {
          method: 'POST',
          body: fd
          }).then(function (response) {
          //...
          });


          as shown here. Not using a <form> cannot work, since you do not have a <input type="file" /> to give the user the opportunity to select files. Not taking advantage of using FormData is possible, but since that is complicated and error-prone, the FormData API was introduced.



          That said, all you need to do is add event listener(s) to the dropzone object and do what is need to be done.



          The simplest form to perform an React Integratio is to use componentDidMount() and componentWillUnmount() lifecycle methods to create and destroy the dropzone object. The needed form can be created within the render() method or, when used programmatically, with the callback of a ref.






          share|improve this answer























          • Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
            – theITvideos
            Nov 20 at 22:04








          • 1




            YES. That should work as well…
            – philipp
            Nov 21 at 7:18











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2















          I don't have Form to post the data




          Why not? As shown in the docs here you need to create a basic form like:



          <form action="/file-upload"
          class="dropzone"
          id="my-awesome-dropzone">
          <input type="file" name="file" />
          </form>


          In case you create Dropzone programmatically, that should already be present.



          Having that, sending the Files via Ajax is easy, since all you need to do is:



          //create a FormData Object
          //that will care about all
          //the mimetypes etc
          const fd = new FormData(document.getElementById('my-awesome-dropzone'));

          fetch(<url>, {
          method: 'POST',
          body: fd
          }).then(function (response) {
          //...
          });


          as shown here. Not using a <form> cannot work, since you do not have a <input type="file" /> to give the user the opportunity to select files. Not taking advantage of using FormData is possible, but since that is complicated and error-prone, the FormData API was introduced.



          That said, all you need to do is add event listener(s) to the dropzone object and do what is need to be done.



          The simplest form to perform an React Integratio is to use componentDidMount() and componentWillUnmount() lifecycle methods to create and destroy the dropzone object. The needed form can be created within the render() method or, when used programmatically, with the callback of a ref.






          share|improve this answer























          • Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
            – theITvideos
            Nov 20 at 22:04








          • 1




            YES. That should work as well…
            – philipp
            Nov 21 at 7:18
















          2















          I don't have Form to post the data




          Why not? As shown in the docs here you need to create a basic form like:



          <form action="/file-upload"
          class="dropzone"
          id="my-awesome-dropzone">
          <input type="file" name="file" />
          </form>


          In case you create Dropzone programmatically, that should already be present.



          Having that, sending the Files via Ajax is easy, since all you need to do is:



          //create a FormData Object
          //that will care about all
          //the mimetypes etc
          const fd = new FormData(document.getElementById('my-awesome-dropzone'));

          fetch(<url>, {
          method: 'POST',
          body: fd
          }).then(function (response) {
          //...
          });


          as shown here. Not using a <form> cannot work, since you do not have a <input type="file" /> to give the user the opportunity to select files. Not taking advantage of using FormData is possible, but since that is complicated and error-prone, the FormData API was introduced.



          That said, all you need to do is add event listener(s) to the dropzone object and do what is need to be done.



          The simplest form to perform an React Integratio is to use componentDidMount() and componentWillUnmount() lifecycle methods to create and destroy the dropzone object. The needed form can be created within the render() method or, when used programmatically, with the callback of a ref.






          share|improve this answer























          • Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
            – theITvideos
            Nov 20 at 22:04








          • 1




            YES. That should work as well…
            – philipp
            Nov 21 at 7:18














          2












          2








          2







          I don't have Form to post the data




          Why not? As shown in the docs here you need to create a basic form like:



          <form action="/file-upload"
          class="dropzone"
          id="my-awesome-dropzone">
          <input type="file" name="file" />
          </form>


          In case you create Dropzone programmatically, that should already be present.



          Having that, sending the Files via Ajax is easy, since all you need to do is:



          //create a FormData Object
          //that will care about all
          //the mimetypes etc
          const fd = new FormData(document.getElementById('my-awesome-dropzone'));

          fetch(<url>, {
          method: 'POST',
          body: fd
          }).then(function (response) {
          //...
          });


          as shown here. Not using a <form> cannot work, since you do not have a <input type="file" /> to give the user the opportunity to select files. Not taking advantage of using FormData is possible, but since that is complicated and error-prone, the FormData API was introduced.



          That said, all you need to do is add event listener(s) to the dropzone object and do what is need to be done.



          The simplest form to perform an React Integratio is to use componentDidMount() and componentWillUnmount() lifecycle methods to create and destroy the dropzone object. The needed form can be created within the render() method or, when used programmatically, with the callback of a ref.






          share|improve this answer















          I don't have Form to post the data




          Why not? As shown in the docs here you need to create a basic form like:



          <form action="/file-upload"
          class="dropzone"
          id="my-awesome-dropzone">
          <input type="file" name="file" />
          </form>


          In case you create Dropzone programmatically, that should already be present.



          Having that, sending the Files via Ajax is easy, since all you need to do is:



          //create a FormData Object
          //that will care about all
          //the mimetypes etc
          const fd = new FormData(document.getElementById('my-awesome-dropzone'));

          fetch(<url>, {
          method: 'POST',
          body: fd
          }).then(function (response) {
          //...
          });


          as shown here. Not using a <form> cannot work, since you do not have a <input type="file" /> to give the user the opportunity to select files. Not taking advantage of using FormData is possible, but since that is complicated and error-prone, the FormData API was introduced.



          That said, all you need to do is add event listener(s) to the dropzone object and do what is need to be done.



          The simplest form to perform an React Integratio is to use componentDidMount() and componentWillUnmount() lifecycle methods to create and destroy the dropzone object. The needed form can be created within the render() method or, when used programmatically, with the callback of a ref.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 20 at 8:11

























          answered Nov 20 at 7:51









          philipp

          8,63643568




          8,63643568












          • Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
            – theITvideos
            Nov 20 at 22:04








          • 1




            YES. That should work as well…
            – philipp
            Nov 21 at 7:18


















          • Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
            – theITvideos
            Nov 20 at 22:04








          • 1




            YES. That should work as well…
            – philipp
            Nov 21 at 7:18
















          Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
          – theITvideos
          Nov 20 at 22:04






          Thank you for the reply. In my react .tsx file, although there is no <form> tag being using, I am using dropzone component like this: <Dropzone onDrop={this.onDrop.bind(this)} > <p>drop files here</p> </Dropzone> and it does generate an <input type="file" /> tag upon page render. Could I use data from this input tag and use in the FormData.append() method?
          – theITvideos
          Nov 20 at 22:04






          1




          1




          YES. That should work as well…
          – philipp
          Nov 21 at 7:18




          YES. That should work as well…
          – philipp
          Nov 21 at 7:18


















          draft saved

          draft discarded




















































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