Passed parameter to reference model in Angular?
1
I'm iterating from an array of JSON objects and would like to update the value of a item on change of an input field. I passed the item it should reference to inside the function call but it seems that the model is not being update along with it. The snippets of my code can be seen below:
peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>javascript
angular asked Nov 21 '18 at 1:00
caricaturecaricature
346
add a comment |
1
I'm iterating from an array of JSON objects and would like to update the value of a item on change of an input field. I passed the item it should reference to inside the function call but it seems that the model is not being update along with it. The snippets of my code can be seen below:
peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>javascript
angular asked Nov 21 '18 at 1:00
caricaturecaricature
346
let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38
add a comment |
1
1
1
I'm iterating from an array of JSON objects and would like to update the value of a item on change of an input field. I passed the item it should reference to inside the function call but it seems that the model is not being update along with it. The snippets of my code can be seen below:
peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>javascript
angular asked Nov 21 '18 at 1:00
caricaturecaricature
346
I'm iterating from an array of JSON objects and would like to update the value of a item on change of an input field. I passed the item it should reference to inside the function call but it seems that the model is not being update along with it. The snippets of my code can be seen below:
peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>peopleObject = [
{name: "Alice", address: "Tokyo", isModified: false},
{name: "Bob", address: "Manila", isModified: false}
]
formModified(isModified): void {
isModified = true;
}<div *ngFor="let person of peopleObject; let i=index">
<input [(ngModel)]="person.name" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.name}}" class="form-control">
<input [(ngModel)]="person.address" (ngModelChange)="formModified(person.isModified)" placeholder="{{person.address}}" class="form-control">
<button (click)="savePersonDetails(person.name)" [disabled]="!person.isModified">Save</button>
</div>javascript
angular javascript
angular asked Nov 21 '18 at 1:00
caricaturecaricature
346
asked Nov 21 '18 at 1:00
caricaturecaricature
346
edited Nov 21 '18 at 1:44
caricature
asked Nov 21 '18 at 1:00
caricaturecaricature
346
asked Nov 21 '18 at 1:00
caricaturecaricature
346
asked Nov 21 '18 at 1:00
caricaturecaricature
346
346
let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38
add a comment |
let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38
let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38
let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38
add a comment |
1 Answer
1
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oldest
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If what you are trying to do is subscribe to its input change. You can implement it this way:
<input [ngModel]="person.name" // Property Binding; Removing the event binding ()
(ngModelChange)="person.isModified = true" // Event Binding; directly change the person.isModified to true w/o calling the function
[placeholder]="person.name" // You can also use property binding here if you have a dynamic value to assign
class="form-control">
Had created a Stackblitz link for you reference.
Default name: Alice, when i added 's' - its isModified is changed to true
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried(input)but it isn't changing the model as well
– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't usethis:( I have updated my question to include sample data
– caricature
Nov 21 '18 at 1:45
|
show 1 more comment
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1 Answer
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votes
1 Answer
1
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oldest
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oldest
votes
0
If what you are trying to do is subscribe to its input change. You can implement it this way:
<input [ngModel]="person.name" // Property Binding; Removing the event binding ()
(ngModelChange)="person.isModified = true" // Event Binding; directly change the person.isModified to true w/o calling the function
[placeholder]="person.name" // You can also use property binding here if you have a dynamic value to assign
class="form-control">
Had created a Stackblitz link for you reference.
Default name: Alice, when i added 's' - its isModified is changed to true
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried(input)but it isn't changing the model as well
– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't usethis:( I have updated my question to include sample data
– caricature
Nov 21 '18 at 1:45
|
show 1 more comment
0
If what you are trying to do is subscribe to its input change. You can implement it this way:
<input [ngModel]="person.name" // Property Binding; Removing the event binding ()
(ngModelChange)="person.isModified = true" // Event Binding; directly change the person.isModified to true w/o calling the function
[placeholder]="person.name" // You can also use property binding here if you have a dynamic value to assign
class="form-control">
Had created a Stackblitz link for you reference.
Default name: Alice, when i added 's' - its isModified is changed to true
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried(input)but it isn't changing the model as well
– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't usethis:( I have updated my question to include sample data
– caricature
Nov 21 '18 at 1:45
|
show 1 more comment
0
0
0
If what you are trying to do is subscribe to its input change. You can implement it this way:
<input [ngModel]="person.name" // Property Binding; Removing the event binding ()
(ngModelChange)="person.isModified = true" // Event Binding; directly change the person.isModified to true w/o calling the function
[placeholder]="person.name" // You can also use property binding here if you have a dynamic value to assign
class="form-control">
Had created a Stackblitz link for you reference.
Default name: Alice, when i added 's' - its isModified is changed to true
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
If what you are trying to do is subscribe to its input change. You can implement it this way:
<input [ngModel]="person.name" // Property Binding; Removing the event binding ()
(ngModelChange)="person.isModified = true" // Event Binding; directly change the person.isModified to true w/o calling the function
[placeholder]="person.name" // You can also use property binding here if you have a dynamic value to assign
class="form-control">
Had created a Stackblitz link for you reference.
Default name: Alice, when i added 's' - its isModified is changed to true
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
edited Nov 24 '18 at 13:57
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
answered Nov 21 '18 at 1:09
KShewenggerKShewengger
1,475614
1,475614
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried(input)but it isn't changing the model as well
– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't usethis:( I have updated my question to include sample data
– caricature
Nov 21 '18 at 1:45
|
show 1 more comment
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried(input)but it isn't changing the model as well
– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't usethis:( I have updated my question to include sample data
– caricature
Nov 21 '18 at 1:45
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
it isn't working for me :( isModified is not updating in the model
– caricature
Nov 21 '18 at 1:14
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
May I know if what you are trying to do is subscribe to whatever input change it occurs, it will call the formModified function ? if that's the case, i had updated my answer
– KShewengger
Nov 21 '18 at 1:24
yes that's the idea :) i tried
(input) but it isn't changing the model as well– caricature
Nov 21 '18 at 1:29
yes that's the idea :) i tried
(input) but it isn't changing the model as well– caricature
Nov 21 '18 at 1:29
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
had updated my answer and provided a stackblitz link for you reference. What you're lacking was to set 'this' on your isModified inside the formModified function. Dont forget to initialize isModified at the top of you component's constructor
– KShewengger
Nov 21 '18 at 1:40
I'm iterating through an array of JSON objects so I can't use
this :( I have updated my question to include sample data– caricature
Nov 21 '18 at 1:45
I'm iterating through an array of JSON objects so I can't use
this :( I have updated my question to include sample data– caricature
Nov 21 '18 at 1:45
|
show 1 more comment
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let say you want to change the name of the person, so when you change it from the input field you want to update that name in the peopleObject object right?
– Sachi.Dila
Nov 21 '18 at 1:38