How to abort a file upload in PrimeNG’s FileUpload component?












1














1. Summary



Based on the selected file in PrimeNG's FileUpload component, I want to abort the file upload to the backend server for specific filename patterns. Angular 6.0.7, PrimeNG 6.0.2.



2. First approach



2.1. HTML part



<p-fileUpload #fileUploader name="file" url="{{uploadUrl}}" accept=".jpeg,jpg" 
auto="auto" mode="basic" chooseLabel=„Upload file“
(onBeforeUpload)="fileUploadOnBeforeUpload($event, fileUploader)">
</p-fileUpload>


2.2. TypeScript part



fileUploadOnBeforeUpload(event) {
if (condition) {
event.xhr.abort();
}
}


2.3. Result



The method was called without any errors, but the upload was not canceled.



3. Second approach



3.1 TypeScript part



fileUploadOnBeforeUpload(event, fileUploader: FileUpload) {
if (condition) {
for (let file of fileUploader.files) {
const index = fileUploader.files.indexOf(file);
fileUploader.remove(event, index);
}
}
}


3.2 Result



The selected files are removed before transfer, which "stops" the upload as intended. But the backend server understandably complains about the empty request in the browser console: Failed to load resource: the server responded with a status of 400 ().



4. To be solved challenge



How can I abort the file upload in PrimeNG FileUpload component after selection of specific files?










share|improve this question





























    1














    1. Summary



    Based on the selected file in PrimeNG's FileUpload component, I want to abort the file upload to the backend server for specific filename patterns. Angular 6.0.7, PrimeNG 6.0.2.



    2. First approach



    2.1. HTML part



    <p-fileUpload #fileUploader name="file" url="{{uploadUrl}}" accept=".jpeg,jpg" 
    auto="auto" mode="basic" chooseLabel=„Upload file“
    (onBeforeUpload)="fileUploadOnBeforeUpload($event, fileUploader)">
    </p-fileUpload>


    2.2. TypeScript part



    fileUploadOnBeforeUpload(event) {
    if (condition) {
    event.xhr.abort();
    }
    }


    2.3. Result



    The method was called without any errors, but the upload was not canceled.



    3. Second approach



    3.1 TypeScript part



    fileUploadOnBeforeUpload(event, fileUploader: FileUpload) {
    if (condition) {
    for (let file of fileUploader.files) {
    const index = fileUploader.files.indexOf(file);
    fileUploader.remove(event, index);
    }
    }
    }


    3.2 Result



    The selected files are removed before transfer, which "stops" the upload as intended. But the backend server understandably complains about the empty request in the browser console: Failed to load resource: the server responded with a status of 400 ().



    4. To be solved challenge



    How can I abort the file upload in PrimeNG FileUpload component after selection of specific files?










    share|improve this question



























      1












      1








      1







      1. Summary



      Based on the selected file in PrimeNG's FileUpload component, I want to abort the file upload to the backend server for specific filename patterns. Angular 6.0.7, PrimeNG 6.0.2.



      2. First approach



      2.1. HTML part



      <p-fileUpload #fileUploader name="file" url="{{uploadUrl}}" accept=".jpeg,jpg" 
      auto="auto" mode="basic" chooseLabel=„Upload file“
      (onBeforeUpload)="fileUploadOnBeforeUpload($event, fileUploader)">
      </p-fileUpload>


      2.2. TypeScript part



      fileUploadOnBeforeUpload(event) {
      if (condition) {
      event.xhr.abort();
      }
      }


      2.3. Result



      The method was called without any errors, but the upload was not canceled.



      3. Second approach



      3.1 TypeScript part



      fileUploadOnBeforeUpload(event, fileUploader: FileUpload) {
      if (condition) {
      for (let file of fileUploader.files) {
      const index = fileUploader.files.indexOf(file);
      fileUploader.remove(event, index);
      }
      }
      }


      3.2 Result



      The selected files are removed before transfer, which "stops" the upload as intended. But the backend server understandably complains about the empty request in the browser console: Failed to load resource: the server responded with a status of 400 ().



      4. To be solved challenge



      How can I abort the file upload in PrimeNG FileUpload component after selection of specific files?










      share|improve this question















      1. Summary



      Based on the selected file in PrimeNG's FileUpload component, I want to abort the file upload to the backend server for specific filename patterns. Angular 6.0.7, PrimeNG 6.0.2.



      2. First approach



      2.1. HTML part



      <p-fileUpload #fileUploader name="file" url="{{uploadUrl}}" accept=".jpeg,jpg" 
      auto="auto" mode="basic" chooseLabel=„Upload file“
      (onBeforeUpload)="fileUploadOnBeforeUpload($event, fileUploader)">
      </p-fileUpload>


      2.2. TypeScript part



      fileUploadOnBeforeUpload(event) {
      if (condition) {
      event.xhr.abort();
      }
      }


      2.3. Result



      The method was called without any errors, but the upload was not canceled.



      3. Second approach



      3.1 TypeScript part



      fileUploadOnBeforeUpload(event, fileUploader: FileUpload) {
      if (condition) {
      for (let file of fileUploader.files) {
      const index = fileUploader.files.indexOf(file);
      fileUploader.remove(event, index);
      }
      }
      }


      3.2 Result



      The selected files are removed before transfer, which "stops" the upload as intended. But the backend server understandably complains about the empty request in the browser console: Failed to load resource: the server responded with a status of 400 ().



      4. To be solved challenge



      How can I abort the file upload in PrimeNG FileUpload component after selection of specific files?







      angular typescript file-upload upload primeng






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 13 at 17:47

























      asked Nov 9 at 1:50









      ThirstForKnowledge

      6351112




      6351112





























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