How to fix 'patchValue with file object to formControl'Huge number of files generated for every Angular projectAngular 4 patchValue based on index in FormArrayHow to make a formControl readonlyAngular - patchValue FormControlAngular patchValue does not workUsing formcontrol in nested childrenPatchvalue with null objectAngular radio button patchValue with a json objectAngular - setValue FormControl return [object ErrorEvent] thrown

How would an Amulet of Proof Against Detection and Location interact with the Comprehend Languages spell?

How to travel between two stationary worlds in the least amount of time? (time dilation)

Did Snape really give Umbridge a fake Veritaserum potion that Harry later pretended to drink?

What happens if the limit of 4 billion files was exceeded in an ext4 partition?

Will a free neutron radiate if it is de-accelerated?

How can solar sailed ships be protected from space debris?

What are the differences of checking a self-signed certificate vs ignore it?

How to respond to someone who condemns behavior similar to what they exhibit?

What is the difference between a historical drama and a period drama?

Chess problem: Make a crossword in 3 moves

Data normalization before or after train-test split?

Who pays for increased security measures on flights to the US?

Apex Sleep: what is CPU penalty

Why do Klingons use cloaking devices?

Why is there paternal, for fatherly, fraternal, for brotherly, but no similar word for sons?

Is there a typical layout to blocking installed for backing in new construction framing?

Interview Question - Card betting

Did Stalin kill all Soviet officers involved in the Winter War?

What's the big deal about the Nazgûl losing their horses?

What does the ash content of broken wheat really mean?

What can a novel do that film and TV cannot?

Isn't "Dave's protocol" good if only the database, and not the code, is leaked?

What is exact meaning of “ich wäre gern”?

Explain how 'Sharing the burden' puzzle from Professor Layton and the Miracle Mask should be solved



How to fix 'patchValue with file object to formControl'


Huge number of files generated for every Angular projectAngular 4 patchValue based on index in FormArrayHow to make a formControl readonlyAngular - patchValue FormControlAngular patchValue does not workUsing formcontrol in nested childrenPatchvalue with null objectAngular radio button patchValue with a json objectAngular - setValue FormControl return [object ErrorEvent] thrown






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








1















i have two methods in typescript:



onImagePicked(event: Event) and onImagePicked1(event: Event, flav: AbstractControl)



The first method works fine. There i can upload an image.
The second one is not working because it's not possible to store the file object into that wanted formControl object.
Seriously i can store instead of the fileobject a random string to that formControl object, but why not the file?



Maybe something is different to the formControl objects, but i can't see any differences in the browserconsole...



onImagePicked(event: Event) 
const file = (event.target as HTMLInputElement).files[0];
this.newFlavForm.patchValue(imgUrl: file);
this.newFlavForm.get('imgUrl').updateValueAndValidity();
const reader = new FileReader();
reader.onload = () =>
this.imgPreview = <string>reader.result;
;
reader.readAsDataURL(file);



onImagePicked1(event: Event, flav: AbstractControl)
const file = (event.target as HTMLInputElement).files[0];
flav.patchValue(imgUrl: file);
flav.get('imgUrl').updateValueAndValidity();
const reader = new FileReader();
reader.onload = () =>
this.imgPreview = <string>reader.result;
;
reader.readAsDataURL(file);










share|improve this question




























    1















    i have two methods in typescript:



    onImagePicked(event: Event) and onImagePicked1(event: Event, flav: AbstractControl)



    The first method works fine. There i can upload an image.
    The second one is not working because it's not possible to store the file object into that wanted formControl object.
    Seriously i can store instead of the fileobject a random string to that formControl object, but why not the file?



    Maybe something is different to the formControl objects, but i can't see any differences in the browserconsole...



    onImagePicked(event: Event) 
    const file = (event.target as HTMLInputElement).files[0];
    this.newFlavForm.patchValue(imgUrl: file);
    this.newFlavForm.get('imgUrl').updateValueAndValidity();
    const reader = new FileReader();
    reader.onload = () =>
    this.imgPreview = <string>reader.result;
    ;
    reader.readAsDataURL(file);



    onImagePicked1(event: Event, flav: AbstractControl)
    const file = (event.target as HTMLInputElement).files[0];
    flav.patchValue(imgUrl: file);
    flav.get('imgUrl').updateValueAndValidity();
    const reader = new FileReader();
    reader.onload = () =>
    this.imgPreview = <string>reader.result;
    ;
    reader.readAsDataURL(file);










    share|improve this question
























      1












      1








      1








      i have two methods in typescript:



      onImagePicked(event: Event) and onImagePicked1(event: Event, flav: AbstractControl)



      The first method works fine. There i can upload an image.
      The second one is not working because it's not possible to store the file object into that wanted formControl object.
      Seriously i can store instead of the fileobject a random string to that formControl object, but why not the file?



      Maybe something is different to the formControl objects, but i can't see any differences in the browserconsole...



      onImagePicked(event: Event) 
      const file = (event.target as HTMLInputElement).files[0];
      this.newFlavForm.patchValue(imgUrl: file);
      this.newFlavForm.get('imgUrl').updateValueAndValidity();
      const reader = new FileReader();
      reader.onload = () =>
      this.imgPreview = <string>reader.result;
      ;
      reader.readAsDataURL(file);



      onImagePicked1(event: Event, flav: AbstractControl)
      const file = (event.target as HTMLInputElement).files[0];
      flav.patchValue(imgUrl: file);
      flav.get('imgUrl').updateValueAndValidity();
      const reader = new FileReader();
      reader.onload = () =>
      this.imgPreview = <string>reader.result;
      ;
      reader.readAsDataURL(file);










      share|improve this question














      i have two methods in typescript:



      onImagePicked(event: Event) and onImagePicked1(event: Event, flav: AbstractControl)



      The first method works fine. There i can upload an image.
      The second one is not working because it's not possible to store the file object into that wanted formControl object.
      Seriously i can store instead of the fileobject a random string to that formControl object, but why not the file?



      Maybe something is different to the formControl objects, but i can't see any differences in the browserconsole...



      onImagePicked(event: Event) 
      const file = (event.target as HTMLInputElement).files[0];
      this.newFlavForm.patchValue(imgUrl: file);
      this.newFlavForm.get('imgUrl').updateValueAndValidity();
      const reader = new FileReader();
      reader.onload = () =>
      this.imgPreview = <string>reader.result;
      ;
      reader.readAsDataURL(file);



      onImagePicked1(event: Event, flav: AbstractControl)
      const file = (event.target as HTMLInputElement).files[0];
      flav.patchValue(imgUrl: file);
      flav.get('imgUrl').updateValueAndValidity();
      const reader = new FileReader();
      reader.onload = () =>
      this.imgPreview = <string>reader.result;
      ;
      reader.readAsDataURL(file);







      angular angular-reactive-forms






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 25 at 19:11









      Daywa1k3rDaywa1k3r

      65 bronze badges




      65 bronze badges






















          0






          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%2f55344921%2fhow-to-fix-patchvalue-with-file-object-to-formcontrol%23new-answer', 'question_page');

          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes




          Is this question similar to what you get asked at work? Learn more about asking and sharing private information with your coworkers using Stack Overflow for Teams.







          Is this question similar to what you get asked at work? Learn more about asking and sharing private information with your coworkers using Stack Overflow for Teams.



















          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.




          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55344921%2fhow-to-fix-patchvalue-with-file-object-to-formcontrol%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

          How to preserve electronics (computers, tablets and phones) for hundreds of years Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) The network's official Twitter account is up and running again. What content…How might modern humans leave a message for 50,000 years?How would an aquatic race develop computers?How do we make computers care for human life?Keeping supplies for 1000 yearsWhat will cell phones become in 100 years?What body armor protects against a laser?Could a society attain 1800s technology if limited to using copper and bronze?Electricity power (magic) and electronicsScavenging metal resources in post-apocalypse after 100 yearsWhy would precursors create devices that can survive and still work after hundreds of years?

          155 수학 과학 기타 둘러보기 메뉴eh추가해eh문서를 완성해

          Convert JSON to MapSimplest way to convert a string representing JSON array into Java array List of key value pairsHow to take String JSON values into HashMapConvert a JSON String to a HashMapCreating BSON object from JSON stringJSONObject - How to get a value ?Better Map ConstructorReading JSON from Url javaUpdate columns if input values are not null otherwise ignore and keep the existing values of column in databaseHow to store object represented as Json string into Couchbase Lite?Go JSON into MapHow do I efficiently iterate over each entry in a Java Map?Sort a Map<Key, Value> by valuesHow to round a number to n decimal places in JavaCan comments be used in JSON?How do I read / convert an InputStream into a String in Java?How can I pretty-print JSON in a shell script?What is the correct JSON content type?How can I deserialize JSON to a simple Dictionary<string,string> in ASP.NET?Why does Google prepend while(1); to their JSON responses?Parse JSON in JavaScript?