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





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53218727%2fhow-to-abort-a-file-upload-in-primeng-s-fileupload-component%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53218727%2fhow-to-abort-a-file-upload-in-primeng-s-fileupload-component%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Guess what letter conforming each word

          Port of Spain

          Run scheduled task as local user group (not BUILTIN)