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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

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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);
 

angular angular-reactive-forms

share|improve this question

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

add a comment | 

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);
 

angular angular-reactive-forms

share|improve this question

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

add a comment | 

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

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

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

angular angular-reactive-forms

share|improve this question

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

share|improve this question

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges

asked Mar 25 at 19:11

Daywa1k3rDaywa1k3r

655 bronze badges