Mixing
NativeScript Angular2 Passing context parameter for data binding a function
I have been looking through the documentation and examples but cannot seem to find an appropriate example to pass the source entity to a function for binding.
For example, in trying to bind the "hidden" visibility parameter value to the result of function isHidden(), I would like to pass some sort of variable like callerContext that knows which TextField is is associated with the binding. Does such a variable exist or do I have create a scheme myself?
<TextField class="input" hint="Email address" [hidden]="isHidden(callerContext)"
keyboardType="email" autocorrect="false" autocapitalizationType="none"
[(ngModel)]="contactSettings.emailAddressList[0]" returnKeyType="next" (returnPress)="focusNext()">
</TextField>
Please let me know if this is not clear.
angular data-binding binding nativescript
asked Nov 22 '18 at 4:35
JasonJason
362711
add a comment |
I have been looking through the documentation and examples but cannot seem to find an appropriate example to pass the source entity to a function for binding.
For example, in trying to bind the "hidden" visibility parameter value to the result of function isHidden(), I would like to pass some sort of variable like callerContext that knows which TextField is is associated with the binding. Does such a variable exist or do I have create a scheme myself?
<TextField class="input" hint="Email address" [hidden]="isHidden(callerContext)"
keyboardType="email" autocorrect="false" autocapitalizationType="none"
[(ngModel)]="contactSettings.emailAddressList[0]" returnKeyType="next" (returnPress)="focusNext()">
</TextField>
Please let me know if this is not clear.
angular data-binding binding nativescript
asked Nov 22 '18 at 4:35
JasonJason
362711
These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16
add a comment |
I have been looking through the documentation and examples but cannot seem to find an appropriate example to pass the source entity to a function for binding.
For example, in trying to bind the "hidden" visibility parameter value to the result of function isHidden(), I would like to pass some sort of variable like callerContext that knows which TextField is is associated with the binding. Does such a variable exist or do I have create a scheme myself?
<TextField class="input" hint="Email address" [hidden]="isHidden(callerContext)"
keyboardType="email" autocorrect="false" autocapitalizationType="none"
[(ngModel)]="contactSettings.emailAddressList[0]" returnKeyType="next" (returnPress)="focusNext()">
</TextField>
Please let me know if this is not clear.
angular data-binding binding nativescript
asked Nov 22 '18 at 4:35
JasonJason
362711
I have been looking through the documentation and examples but cannot seem to find an appropriate example to pass the source entity to a function for binding.
For example, in trying to bind the "hidden" visibility parameter value to the result of function isHidden(), I would like to pass some sort of variable like callerContext that knows which TextField is is associated with the binding. Does such a variable exist or do I have create a scheme myself?
<TextField class="input" hint="Email address" [hidden]="isHidden(callerContext)"
keyboardType="email" autocorrect="false" autocapitalizationType="none"
[(ngModel)]="contactSettings.emailAddressList[0]" returnKeyType="next" (returnPress)="focusNext()">
</TextField>
Please let me know if this is not clear.
angular data-binding binding nativescript
angular data-binding binding nativescript
asked Nov 22 '18 at 4:35
JasonJason
362711
asked Nov 22 '18 at 4:35
JasonJason
362711
asked Nov 22 '18 at 4:35
JasonJason
362711
asked Nov 22 '18 at 4:35
JasonJason
362711
asked Nov 22 '18 at 4:35
JasonJason
362711
362711
These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16
add a comment |
These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16
These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16
add a comment |
1 Answer
1
active
oldest
votes
There won't be a variable named callerContext until you define one. If you want the textfield reference in isHidden method, then pass the textfield itself
<TextField #txt class="input" hint="Email address" [hidden]="isHidden(txt)" ....
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
There won't be a variable named callerContext until you define one. If you want the textfield reference in isHidden method, then pass the textfield itself
<TextField #txt class="input" hint="Email address" [hidden]="isHidden(txt)" ....
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
add a comment |
There won't be a variable named callerContext until you define one. If you want the textfield reference in isHidden method, then pass the textfield itself
<TextField #txt class="input" hint="Email address" [hidden]="isHidden(txt)" ....
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
add a comment |
There won't be a variable named callerContext until you define one. If you want the textfield reference in isHidden method, then pass the textfield itself
<TextField #txt class="input" hint="Email address" [hidden]="isHidden(txt)" ....
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
There won't be a variable named callerContext until you define one. If you want the textfield reference in isHidden method, then pass the textfield itself
<TextField #txt class="input" hint="Email address" [hidden]="isHidden(txt)" ....
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
answered Nov 22 '18 at 6:20
ManojManoj
6,3462922
6,3462922
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
add a comment |
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Ok, that is what I found so far. I was hoping to avoid naming individual fields and then passing that same name since it is so redundant and error prone. Thanks for clarifying.
– Jason
Nov 22 '18 at 12:17
Will work with this.
– Jason
Nov 22 '18 at 14:15
Will work with this.
– Jason
Nov 22 '18 at 14:15
add a comment |
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These are the documentation for textfield in angular with nativescript. docs.nativescript.org/angular/ui/ng-ui-widgets/text-field docs.nativescript.org/api-reference/classes/… In your case for visibility you can use ng-if similar to here docs.nativescript.org/angular/ui/ng-ui-widgets/ng-directives
– Baskar
Nov 22 '18 at 5:18
Thanks for the references. I had read these. I was more looking for existence of some predefined source variables to link things together.
– Jason
Nov 22 '18 at 12:16