Angular 7 - Add directive dynamically












3














<input  {{field.validatorDirective}} 
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">


field has all the content required but I'd like to dynamically add the directive name to be used.



It is currently added as a string as field.validatorDirective



This has the error




TextComponent.html:2 ERROR DOM Exception: Failed to execute
'setAttribute' on 'Element': '{{field.validatorDirective}}' is not a
valid attribute name.




My Directive has the selector usernameValidator










share|improve this question
























  • {{field?.validatorDirective}} try like this ?
    – programoholic
    Nov 23 '18 at 12:52










  • No, you can't do that.
    – JB Nizet
    Nov 23 '18 at 12:52










  • I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
    – ngDough
    Nov 23 '18 at 12:53










  • This might help --> stackoverflow.com/questions/41298168/…
    – Bunyamin Coskuner
    Nov 23 '18 at 12:57
















3














<input  {{field.validatorDirective}} 
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">


field has all the content required but I'd like to dynamically add the directive name to be used.



It is currently added as a string as field.validatorDirective



This has the error




TextComponent.html:2 ERROR DOM Exception: Failed to execute
'setAttribute' on 'Element': '{{field.validatorDirective}}' is not a
valid attribute name.




My Directive has the selector usernameValidator










share|improve this question
























  • {{field?.validatorDirective}} try like this ?
    – programoholic
    Nov 23 '18 at 12:52










  • No, you can't do that.
    – JB Nizet
    Nov 23 '18 at 12:52










  • I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
    – ngDough
    Nov 23 '18 at 12:53










  • This might help --> stackoverflow.com/questions/41298168/…
    – Bunyamin Coskuner
    Nov 23 '18 at 12:57














3












3








3







<input  {{field.validatorDirective}} 
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">


field has all the content required but I'd like to dynamically add the directive name to be used.



It is currently added as a string as field.validatorDirective



This has the error




TextComponent.html:2 ERROR DOM Exception: Failed to execute
'setAttribute' on 'Element': '{{field.validatorDirective}}' is not a
valid attribute name.




My Directive has the selector usernameValidator










share|improve this question















<input  {{field.validatorDirective}} 
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">


field has all the content required but I'd like to dynamically add the directive name to be used.



It is currently added as a string as field.validatorDirective



This has the error




TextComponent.html:2 ERROR DOM Exception: Failed to execute
'setAttribute' on 'Element': '{{field.validatorDirective}}' is not a
valid attribute name.




My Directive has the selector usernameValidator







angular angular7






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 6:35









Goncalo Peres

1,3261318




1,3261318










asked Nov 23 '18 at 12:48









ngDough

607




607












  • {{field?.validatorDirective}} try like this ?
    – programoholic
    Nov 23 '18 at 12:52










  • No, you can't do that.
    – JB Nizet
    Nov 23 '18 at 12:52










  • I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
    – ngDough
    Nov 23 '18 at 12:53










  • This might help --> stackoverflow.com/questions/41298168/…
    – Bunyamin Coskuner
    Nov 23 '18 at 12:57


















  • {{field?.validatorDirective}} try like this ?
    – programoholic
    Nov 23 '18 at 12:52










  • No, you can't do that.
    – JB Nizet
    Nov 23 '18 at 12:52










  • I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
    – ngDough
    Nov 23 '18 at 12:53










  • This might help --> stackoverflow.com/questions/41298168/…
    – Bunyamin Coskuner
    Nov 23 '18 at 12:57
















{{field?.validatorDirective}} try like this ?
– programoholic
Nov 23 '18 at 12:52




{{field?.validatorDirective}} try like this ?
– programoholic
Nov 23 '18 at 12:52












No, you can't do that.
– JB Nizet
Nov 23 '18 at 12:52




No, you can't do that.
– JB Nizet
Nov 23 '18 at 12:52












I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
– ngDough
Nov 23 '18 at 12:53




I have added what the directive name is usernameValidator this is being passed through as field.validatorDirective
– ngDough
Nov 23 '18 at 12:53












This might help --> stackoverflow.com/questions/41298168/…
– Bunyamin Coskuner
Nov 23 '18 at 12:57




This might help --> stackoverflow.com/questions/41298168/…
– Bunyamin Coskuner
Nov 23 '18 at 12:57












1 Answer
1






active

oldest

votes


















2














It seems you can't do that. I did try with [attr.directiveSelector]="condition" but doesn't work with that as well.



A workaround(if you're interested in one) would be to have two inputs with an *ngIf on both. Something like this:



<input  directive1
*ngIf="condition1"
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">

<input directive2
*ngIf="condition2"
class="form-control"
[ngClass]="{ 'border-danger': hasErrors }"
(keyup)="callback()"
[formControlName]="field.key"
[id]="field.key"
[type]="field.type"
[placeholder]="field.placeholder"
[value]="field.value">





share|improve this answer





















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    1 Answer
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    active

    oldest

    votes









    2














    It seems you can't do that. I did try with [attr.directiveSelector]="condition" but doesn't work with that as well.



    A workaround(if you're interested in one) would be to have two inputs with an *ngIf on both. Something like this:



    <input  directive1
    *ngIf="condition1"
    class="form-control"
    [ngClass]="{ 'border-danger': hasErrors }"
    (keyup)="callback()"
    [formControlName]="field.key"
    [id]="field.key"
    [type]="field.type"
    [placeholder]="field.placeholder"
    [value]="field.value">

    <input directive2
    *ngIf="condition2"
    class="form-control"
    [ngClass]="{ 'border-danger': hasErrors }"
    (keyup)="callback()"
    [formControlName]="field.key"
    [id]="field.key"
    [type]="field.type"
    [placeholder]="field.placeholder"
    [value]="field.value">





    share|improve this answer


























      2














      It seems you can't do that. I did try with [attr.directiveSelector]="condition" but doesn't work with that as well.



      A workaround(if you're interested in one) would be to have two inputs with an *ngIf on both. Something like this:



      <input  directive1
      *ngIf="condition1"
      class="form-control"
      [ngClass]="{ 'border-danger': hasErrors }"
      (keyup)="callback()"
      [formControlName]="field.key"
      [id]="field.key"
      [type]="field.type"
      [placeholder]="field.placeholder"
      [value]="field.value">

      <input directive2
      *ngIf="condition2"
      class="form-control"
      [ngClass]="{ 'border-danger': hasErrors }"
      (keyup)="callback()"
      [formControlName]="field.key"
      [id]="field.key"
      [type]="field.type"
      [placeholder]="field.placeholder"
      [value]="field.value">





      share|improve this answer
























        2












        2








        2






        It seems you can't do that. I did try with [attr.directiveSelector]="condition" but doesn't work with that as well.



        A workaround(if you're interested in one) would be to have two inputs with an *ngIf on both. Something like this:



        <input  directive1
        *ngIf="condition1"
        class="form-control"
        [ngClass]="{ 'border-danger': hasErrors }"
        (keyup)="callback()"
        [formControlName]="field.key"
        [id]="field.key"
        [type]="field.type"
        [placeholder]="field.placeholder"
        [value]="field.value">

        <input directive2
        *ngIf="condition2"
        class="form-control"
        [ngClass]="{ 'border-danger': hasErrors }"
        (keyup)="callback()"
        [formControlName]="field.key"
        [id]="field.key"
        [type]="field.type"
        [placeholder]="field.placeholder"
        [value]="field.value">





        share|improve this answer












        It seems you can't do that. I did try with [attr.directiveSelector]="condition" but doesn't work with that as well.



        A workaround(if you're interested in one) would be to have two inputs with an *ngIf on both. Something like this:



        <input  directive1
        *ngIf="condition1"
        class="form-control"
        [ngClass]="{ 'border-danger': hasErrors }"
        (keyup)="callback()"
        [formControlName]="field.key"
        [id]="field.key"
        [type]="field.type"
        [placeholder]="field.placeholder"
        [value]="field.value">

        <input directive2
        *ngIf="condition2"
        class="form-control"
        [ngClass]="{ 'border-danger': hasErrors }"
        (keyup)="callback()"
        [formControlName]="field.key"
        [id]="field.key"
        [type]="field.type"
        [placeholder]="field.placeholder"
        [value]="field.value">






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 23 '18 at 12:56









        SiddAjmera

        13k31137




        13k31137






























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