Angular Interpolation is not working properly?

up vote
2
down vote

favorite

I have one sample with interpolation. It shows drop-down values correctly when is use any one event like below:

sample: click me

code snippet:

Here i have added event (open)="onOpen()"

<ejs-dropdownlist 

    (open)="onOpen()"

    required id="ddlApp" name="ddlApp" [dataSource]='appDataSource' [allowFiltering]='true' 

    [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" [(ngModel)]="dropdownlApp" 

    #ddlApp="ngModel" [placeholder]='ddlAppText' [fields]='fields'>

sample 2: click me

In this sample i would not add any event, in this case interolation is not working.

Code snippet:

<ejs-dropdownlist 

   required id="ddlApp" name="ddlApp" 

   [dataSource]='appDataSource' [allowFiltering]='true' 

   [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" 

   [(ngModel)]="dropdownlApp" #ddlApp="ngModel" 

   [placeholder]='ddlAppText' [fields]='fields'>

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

add a comment |

up vote
2
down vote

favorite

I have one sample with interpolation. It shows drop-down values correctly when is use any one event like below:

sample: click me

code snippet:

Here i have added event (open)="onOpen()"

<ejs-dropdownlist 

    (open)="onOpen()"

    required id="ddlApp" name="ddlApp" [dataSource]='appDataSource' [allowFiltering]='true' 

    [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" [(ngModel)]="dropdownlApp" 

    #ddlApp="ngModel" [placeholder]='ddlAppText' [fields]='fields'>

sample 2: click me

In this sample i would not add any event, in this case interolation is not working.

Code snippet:

<ejs-dropdownlist 

   required id="ddlApp" name="ddlApp" 

   [dataSource]='appDataSource' [allowFiltering]='true' 

   [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" 

   [(ngModel)]="dropdownlApp" #ddlApp="ngModel" 

   [placeholder]='ddlAppText' [fields]='fields'>

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

add a comment |

up vote
2
down vote

favorite

I have one sample with interpolation. It shows drop-down values correctly when is use any one event like below:

sample: click me

code snippet:

Here i have added event (open)="onOpen()"

<ejs-dropdownlist 

    (open)="onOpen()"

    required id="ddlApp" name="ddlApp" [dataSource]='appDataSource' [allowFiltering]='true' 

    [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" [(ngModel)]="dropdownlApp" 

    #ddlApp="ngModel" [placeholder]='ddlAppText' [fields]='fields'>

sample 2: click me

In this sample i would not add any event, in this case interolation is not working.

Code snippet:

<ejs-dropdownlist 

   required id="ddlApp" name="ddlApp" 

   [dataSource]='appDataSource' [allowFiltering]='true' 

   [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" 

   [(ngModel)]="dropdownlApp" #ddlApp="ngModel" 

   [placeholder]='ddlAppText' [fields]='fields'>

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

I have one sample with interpolation. It shows drop-down values correctly when is use any one event like below:

sample: click me

code snippet:

Here i have added event (open)="onOpen()"

<ejs-dropdownlist 

    (open)="onOpen()"

    required id="ddlApp" name="ddlApp" [dataSource]='appDataSource' [allowFiltering]='true' 

    [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" [(ngModel)]="dropdownlApp" 

    #ddlApp="ngModel" [placeholder]='ddlAppText' [fields]='fields'>

sample 2: click me

In this sample i would not add any event, in this case interolation is not working.

Code snippet:

<ejs-dropdownlist 

   required id="ddlApp" name="ddlApp" 

   [dataSource]='appDataSource' [allowFiltering]='true' 

   [itemTemplate]="itemTemplate" [valueTemplate]="valueTemplate" 

   [(ngModel)]="dropdownlApp" #ddlApp="ngModel" 

   [placeholder]='ddlAppText' [fields]='fields'>

javascript angular interpolation syncfusion ng-template

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

edited Nov 9 at 4:32

yurzui

91.8k10180204

edited Nov 9 at 4:32

yurzui

91.8k10180204

edited Nov 9 at 4:32

yurzui

91.8k10180204

asked Nov 8 at 6:30

kumaresan_sd

539

asked Nov 8 at 6:30

kumaresan_sd

539

asked Nov 8 at 6:30

kumaresan_sd

539

add a comment |

1 Answer
1

active

oldest

votes

up vote
4
down vote

accepted

Just remove changeDetection: ChangeDetectionStrategy.OnPush form your @Component decorator your second sample will work

You component decorator should read as

@Component({

  selector: 'my-app',

  templateUrl: './app.component.html',

  styleUrls: [ './app.component.css' ]

})

Bind you object array in ngOnInit() it is the right way to bind and right time to bind the values - Thanks, Happy coding !!

answered Nov 8 at 7:20

Rahul

9211314

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

|
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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
4
down vote

accepted

Just remove changeDetection: ChangeDetectionStrategy.OnPush form your @Component decorator your second sample will work

You component decorator should read as

@Component({

  selector: 'my-app',

  templateUrl: './app.component.html',

  styleUrls: [ './app.component.css' ]

})

Bind you object array in ngOnInit() it is the right way to bind and right time to bind the values - Thanks, Happy coding !!

answered Nov 8 at 7:20

Rahul

9211314

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

|
show 1 more comment

up vote
4
down vote

accepted

Just remove changeDetection: ChangeDetectionStrategy.OnPush form your @Component decorator your second sample will work

You component decorator should read as

@Component({

  selector: 'my-app',

  templateUrl: './app.component.html',

  styleUrls: [ './app.component.css' ]

})

Bind you object array in ngOnInit() it is the right way to bind and right time to bind the values - Thanks, Happy coding !!

answered Nov 8 at 7:20

Rahul

9211314

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

|
show 1 more comment

up vote
4
down vote

accepted

Just remove changeDetection: ChangeDetectionStrategy.OnPush form your @Component decorator your second sample will work

You component decorator should read as

@Component({

  selector: 'my-app',

  templateUrl: './app.component.html',

  styleUrls: [ './app.component.css' ]

})

Bind you object array in ngOnInit() it is the right way to bind and right time to bind the values - Thanks, Happy coding !!

answered Nov 8 at 7:20

Rahul

9211314

Just remove changeDetection: ChangeDetectionStrategy.OnPush form your @Component decorator your second sample will work

You component decorator should read as

@Component({

  selector: 'my-app',

  templateUrl: './app.component.html',

  styleUrls: [ './app.component.css' ]

})

Bind you object array in ngOnInit() it is the right way to bind and right time to bind the values - Thanks, Happy coding !!

answered Nov 8 at 7:20

Rahul

9211314

answered Nov 8 at 7:20

Rahul

9211314

answered Nov 8 at 7:20

Rahul

9211314

answered Nov 8 at 7:20

Rahul

9211314

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

|
show 1 more comment

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

Thanks for your reply.But my issue is when i use changeDetection,interpolation is not working
– kumaresan_sd
Nov 8 at 8:40

As per your code changeDetection: ChangeDetectionStrategy.OnPush will check only once when the component is instantiated, so that causes issue and your model is not updating after component is instantiated if you want changeDetection then use changeDetection: ChangeDetectionStrategy.Default this will check always when there is a change in your properties
– Rahul
Nov 8 at 8:59

Thanks for your reply..
– kumaresan_sd
Nov 8 at 9:40

If we remove ChangeDetectionStrategy.OnPush from component then that component will be checked on any changes in any component of app. If we're working on a performant application then we should keep OnPush. Adding (open)="0" event should be enough to update template when we open dropdown. Angular will automatically set DropDownListComponent to be checked so that the template attached to its view will be also checked.
– yurzui
Nov 9 at 4:29

@yurzui, i have same question. why i have to change onpush to default. if i use default it will trigger changedetection, if any changes occur but if we use onpush, it will trigger changedetection when value has been changed
– kumaresan_sd
Nov 9 at 5:06

|
show 1 more comment

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