code for getting the url picture in storage and put in database of firebase












1


















var selectedFile;

$("#file").on("change", function(event) {
selectedFile = event.target.files[0];
$("#uploadButton").show();
});

function uploadFile() {
// Create a root reference
var filename = selectedFile.name;
var storageRef = firebase.storage().ref('/dogImages/' + filename);
var uploadTask = storageRef.put(selectedFile);

// Register three observers:
// 1. 'state_changed' observer, called any time the state changes
// 2. Error observer, called on failure
// 3. Completion observer, called on successful completion
uploadTask.on('state_changed', function(snapshot){
// Observe state change events such as progress, pause, and resume
// See below for more detail
}, function(error) {
// Handle unsuccessful uploads
}, function() {
// Handle successful uploads on complete
// For instance, get the download URL: https://firebasestorage.googleapis.com/...
var postKey = firebase.database().ref('Posts').push().key;
var downloadURL = uploadTask.snapshot.downloadURL;

var postData = {
url: downloadURL,
caption: $("#imageCaption").val()
};

var updatess = {};
updatess ['Posts' + postKey] = postData;

return firebase.database().ref().update(updatess);
});

}





The Error is Uncaught (in promise) Error: Reference.update failed: First argument contains undefined in property 'Posts-LRyHOS3r8-VP-7WMsCS.url' and it doesnt store in database of firebase. this is my code










share|improve this question





























    1


















    var selectedFile;

    $("#file").on("change", function(event) {
    selectedFile = event.target.files[0];
    $("#uploadButton").show();
    });

    function uploadFile() {
    // Create a root reference
    var filename = selectedFile.name;
    var storageRef = firebase.storage().ref('/dogImages/' + filename);
    var uploadTask = storageRef.put(selectedFile);

    // Register three observers:
    // 1. 'state_changed' observer, called any time the state changes
    // 2. Error observer, called on failure
    // 3. Completion observer, called on successful completion
    uploadTask.on('state_changed', function(snapshot){
    // Observe state change events such as progress, pause, and resume
    // See below for more detail
    }, function(error) {
    // Handle unsuccessful uploads
    }, function() {
    // Handle successful uploads on complete
    // For instance, get the download URL: https://firebasestorage.googleapis.com/...
    var postKey = firebase.database().ref('Posts').push().key;
    var downloadURL = uploadTask.snapshot.downloadURL;

    var postData = {
    url: downloadURL,
    caption: $("#imageCaption").val()
    };

    var updatess = {};
    updatess ['Posts' + postKey] = postData;

    return firebase.database().ref().update(updatess);
    });

    }





    The Error is Uncaught (in promise) Error: Reference.update failed: First argument contains undefined in property 'Posts-LRyHOS3r8-VP-7WMsCS.url' and it doesnt store in database of firebase. this is my code










    share|improve this question



























      1












      1








      1











      var selectedFile;

      $("#file").on("change", function(event) {
      selectedFile = event.target.files[0];
      $("#uploadButton").show();
      });

      function uploadFile() {
      // Create a root reference
      var filename = selectedFile.name;
      var storageRef = firebase.storage().ref('/dogImages/' + filename);
      var uploadTask = storageRef.put(selectedFile);

      // Register three observers:
      // 1. 'state_changed' observer, called any time the state changes
      // 2. Error observer, called on failure
      // 3. Completion observer, called on successful completion
      uploadTask.on('state_changed', function(snapshot){
      // Observe state change events such as progress, pause, and resume
      // See below for more detail
      }, function(error) {
      // Handle unsuccessful uploads
      }, function() {
      // Handle successful uploads on complete
      // For instance, get the download URL: https://firebasestorage.googleapis.com/...
      var postKey = firebase.database().ref('Posts').push().key;
      var downloadURL = uploadTask.snapshot.downloadURL;

      var postData = {
      url: downloadURL,
      caption: $("#imageCaption").val()
      };

      var updatess = {};
      updatess ['Posts' + postKey] = postData;

      return firebase.database().ref().update(updatess);
      });

      }





      The Error is Uncaught (in promise) Error: Reference.update failed: First argument contains undefined in property 'Posts-LRyHOS3r8-VP-7WMsCS.url' and it doesnt store in database of firebase. this is my code










      share|improve this question



















      var selectedFile;

      $("#file").on("change", function(event) {
      selectedFile = event.target.files[0];
      $("#uploadButton").show();
      });

      function uploadFile() {
      // Create a root reference
      var filename = selectedFile.name;
      var storageRef = firebase.storage().ref('/dogImages/' + filename);
      var uploadTask = storageRef.put(selectedFile);

      // Register three observers:
      // 1. 'state_changed' observer, called any time the state changes
      // 2. Error observer, called on failure
      // 3. Completion observer, called on successful completion
      uploadTask.on('state_changed', function(snapshot){
      // Observe state change events such as progress, pause, and resume
      // See below for more detail
      }, function(error) {
      // Handle unsuccessful uploads
      }, function() {
      // Handle successful uploads on complete
      // For instance, get the download URL: https://firebasestorage.googleapis.com/...
      var postKey = firebase.database().ref('Posts').push().key;
      var downloadURL = uploadTask.snapshot.downloadURL;

      var postData = {
      url: downloadURL,
      caption: $("#imageCaption").val()
      };

      var updatess = {};
      updatess ['Posts' + postKey] = postData;

      return firebase.database().ref().update(updatess);
      });

      }





      The Error is Uncaught (in promise) Error: Reference.update failed: First argument contains undefined in property 'Posts-LRyHOS3r8-VP-7WMsCS.url' and it doesnt store in database of firebase. this is my code






      var selectedFile;

      $("#file").on("change", function(event) {
      selectedFile = event.target.files[0];
      $("#uploadButton").show();
      });

      function uploadFile() {
      // Create a root reference
      var filename = selectedFile.name;
      var storageRef = firebase.storage().ref('/dogImages/' + filename);
      var uploadTask = storageRef.put(selectedFile);

      // Register three observers:
      // 1. 'state_changed' observer, called any time the state changes
      // 2. Error observer, called on failure
      // 3. Completion observer, called on successful completion
      uploadTask.on('state_changed', function(snapshot){
      // Observe state change events such as progress, pause, and resume
      // See below for more detail
      }, function(error) {
      // Handle unsuccessful uploads
      }, function() {
      // Handle successful uploads on complete
      // For instance, get the download URL: https://firebasestorage.googleapis.com/...
      var postKey = firebase.database().ref('Posts').push().key;
      var downloadURL = uploadTask.snapshot.downloadURL;

      var postData = {
      url: downloadURL,
      caption: $("#imageCaption").val()
      };

      var updatess = {};
      updatess ['Posts' + postKey] = postData;

      return firebase.database().ref().update(updatess);
      });

      }





      var selectedFile;

      $("#file").on("change", function(event) {
      selectedFile = event.target.files[0];
      $("#uploadButton").show();
      });

      function uploadFile() {
      // Create a root reference
      var filename = selectedFile.name;
      var storageRef = firebase.storage().ref('/dogImages/' + filename);
      var uploadTask = storageRef.put(selectedFile);

      // Register three observers:
      // 1. 'state_changed' observer, called any time the state changes
      // 2. Error observer, called on failure
      // 3. Completion observer, called on successful completion
      uploadTask.on('state_changed', function(snapshot){
      // Observe state change events such as progress, pause, and resume
      // See below for more detail
      }, function(error) {
      // Handle unsuccessful uploads
      }, function() {
      // Handle successful uploads on complete
      // For instance, get the download URL: https://firebasestorage.googleapis.com/...
      var postKey = firebase.database().ref('Posts').push().key;
      var downloadURL = uploadTask.snapshot.downloadURL;

      var postData = {
      url: downloadURL,
      caption: $("#imageCaption").val()
      };

      var updatess = {};
      updatess ['Posts' + postKey] = postData;

      return firebase.database().ref().update(updatess);
      });

      }






      javascript firebase firebase-realtime-database firebase-storage






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 23 '18 at 3:12









      PradyumanDixit

      2,1872820




      2,1872820










      asked Nov 23 '18 at 2:00









      Miriam Ferrer Miriam Ferrer

      82




      82
























          1 Answer
          1






          active

          oldest

          votes


















          0














          The error message is quite explicit: downloadURL seems to be null. If you search for recent questions about this, you'll see that the download URL is now retrieved asynchronously by calling getDownloadURL().



          So something like:



          uploadTask.on('state_changed', function(snapshot){
          // Observe state change events such as progress, pause, and resume
          // See below for more detail
          }, function(error) {
          // Handle unsuccessful uploads
          }, function() {
          var postKey = firebase.database().ref('Posts').push().key;
          var downloadURL = uploadTask.snapshot.downloadURL;
          return storageRef.getDownloadURL().toPromise().then(downloadUrl => {
          var postData = {
          url: downloadUrl,
          caption: $("#imageCaption").val()
          };

          var updatess = {};
          updatess ['Posts' + postKey] = postData;

          return firebase.database().ref().update(updatess);
          });

          });


          Also see:




          • the Firebase documentation sample on uploads

          • the Firebase documentation on downloading files by URL

          • How do i get download URL once upload is done on firebase storage

          • Firebase get Download URL after successful image upload to firebase storage

          • I can't get image downloadUrl from Firebase Storage (Angular/Ionic)






          share|improve this answer
























          • thank you so much!!!!! your code is working

            – Miriam Ferrer
            Nov 23 '18 at 6:49











          Your Answer






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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          The error message is quite explicit: downloadURL seems to be null. If you search for recent questions about this, you'll see that the download URL is now retrieved asynchronously by calling getDownloadURL().



          So something like:



          uploadTask.on('state_changed', function(snapshot){
          // Observe state change events such as progress, pause, and resume
          // See below for more detail
          }, function(error) {
          // Handle unsuccessful uploads
          }, function() {
          var postKey = firebase.database().ref('Posts').push().key;
          var downloadURL = uploadTask.snapshot.downloadURL;
          return storageRef.getDownloadURL().toPromise().then(downloadUrl => {
          var postData = {
          url: downloadUrl,
          caption: $("#imageCaption").val()
          };

          var updatess = {};
          updatess ['Posts' + postKey] = postData;

          return firebase.database().ref().update(updatess);
          });

          });


          Also see:




          • the Firebase documentation sample on uploads

          • the Firebase documentation on downloading files by URL

          • How do i get download URL once upload is done on firebase storage

          • Firebase get Download URL after successful image upload to firebase storage

          • I can't get image downloadUrl from Firebase Storage (Angular/Ionic)






          share|improve this answer
























          • thank you so much!!!!! your code is working

            – Miriam Ferrer
            Nov 23 '18 at 6:49
















          0














          The error message is quite explicit: downloadURL seems to be null. If you search for recent questions about this, you'll see that the download URL is now retrieved asynchronously by calling getDownloadURL().



          So something like:



          uploadTask.on('state_changed', function(snapshot){
          // Observe state change events such as progress, pause, and resume
          // See below for more detail
          }, function(error) {
          // Handle unsuccessful uploads
          }, function() {
          var postKey = firebase.database().ref('Posts').push().key;
          var downloadURL = uploadTask.snapshot.downloadURL;
          return storageRef.getDownloadURL().toPromise().then(downloadUrl => {
          var postData = {
          url: downloadUrl,
          caption: $("#imageCaption").val()
          };

          var updatess = {};
          updatess ['Posts' + postKey] = postData;

          return firebase.database().ref().update(updatess);
          });

          });


          Also see:




          • the Firebase documentation sample on uploads

          • the Firebase documentation on downloading files by URL

          • How do i get download URL once upload is done on firebase storage

          • Firebase get Download URL after successful image upload to firebase storage

          • I can't get image downloadUrl from Firebase Storage (Angular/Ionic)






          share|improve this answer
























          • thank you so much!!!!! your code is working

            – Miriam Ferrer
            Nov 23 '18 at 6:49














          0












          0








          0







          The error message is quite explicit: downloadURL seems to be null. If you search for recent questions about this, you'll see that the download URL is now retrieved asynchronously by calling getDownloadURL().



          So something like:



          uploadTask.on('state_changed', function(snapshot){
          // Observe state change events such as progress, pause, and resume
          // See below for more detail
          }, function(error) {
          // Handle unsuccessful uploads
          }, function() {
          var postKey = firebase.database().ref('Posts').push().key;
          var downloadURL = uploadTask.snapshot.downloadURL;
          return storageRef.getDownloadURL().toPromise().then(downloadUrl => {
          var postData = {
          url: downloadUrl,
          caption: $("#imageCaption").val()
          };

          var updatess = {};
          updatess ['Posts' + postKey] = postData;

          return firebase.database().ref().update(updatess);
          });

          });


          Also see:




          • the Firebase documentation sample on uploads

          • the Firebase documentation on downloading files by URL

          • How do i get download URL once upload is done on firebase storage

          • Firebase get Download URL after successful image upload to firebase storage

          • I can't get image downloadUrl from Firebase Storage (Angular/Ionic)






          share|improve this answer













          The error message is quite explicit: downloadURL seems to be null. If you search for recent questions about this, you'll see that the download URL is now retrieved asynchronously by calling getDownloadURL().



          So something like:



          uploadTask.on('state_changed', function(snapshot){
          // Observe state change events such as progress, pause, and resume
          // See below for more detail
          }, function(error) {
          // Handle unsuccessful uploads
          }, function() {
          var postKey = firebase.database().ref('Posts').push().key;
          var downloadURL = uploadTask.snapshot.downloadURL;
          return storageRef.getDownloadURL().toPromise().then(downloadUrl => {
          var postData = {
          url: downloadUrl,
          caption: $("#imageCaption").val()
          };

          var updatess = {};
          updatess ['Posts' + postKey] = postData;

          return firebase.database().ref().update(updatess);
          });

          });


          Also see:




          • the Firebase documentation sample on uploads

          • the Firebase documentation on downloading files by URL

          • How do i get download URL once upload is done on firebase storage

          • Firebase get Download URL after successful image upload to firebase storage

          • I can't get image downloadUrl from Firebase Storage (Angular/Ionic)







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 23 '18 at 2:32









          Frank van PuffelenFrank van Puffelen

          243k29387414




          243k29387414













          • thank you so much!!!!! your code is working

            – Miriam Ferrer
            Nov 23 '18 at 6:49



















          • thank you so much!!!!! your code is working

            – Miriam Ferrer
            Nov 23 '18 at 6:49

















          thank you so much!!!!! your code is working

          – Miriam Ferrer
          Nov 23 '18 at 6:49





          thank you so much!!!!! your code is working

          – Miriam Ferrer
          Nov 23 '18 at 6:49




















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