angular - Ionic 2 ionic 3 - ion-checkbox inside ngIf or ngSwitch not working -


hi there have problem - ionic 2 ionic 3 - ion-checkbox inside ngfor , condition, such ngif or ngswitch not working

i posted code online working , not working versions..

https://forum.ionicframework.com/t/ionic-2-ionic-3-ion-checkbox-inside-ngif-or-ngswitch-not-working/105099

working

<ion-list>                 <ion-item *ngfor=" let answer of question.answers">                              <ion-label>{{answer.description}}</ion-label>                             <ion-checkbox (change)="change($event, answer)"></ion-checkbox>                </ion-item>             </ion-list>

enter image description here not working 1

<ion-list>                 <ion-item *ngfor="let answer of question.answers">                     <ng-container *ngif="questiontype.mutiplechoice==question.questiontype_id">                             <ion-label>{{answer.description}}</ion-label>                             <ion-checkbox (change)="change($event, answer)"></ion-checkbox>                     </ng-container>                                     </ion-item>             </ion-list>

not working 2

<ion-list>                 <ion-item *ngfor=" let answer of question.answers">                     <ng-container [ngswitch]="question.questiontype_id">                         <ng-container *ngswitchcase="questiontype.mutiplechoice">                             <ion-label>{{answer.description}}</ion-label>                             <ion-checkbox (change)="change($event, answer)"></ion-checkbox>                         </ng-container>                     </ng-container>                 </ion-item>             </ion-list>

this 1 working until trying enter checkboxes inside… tried templates , span tags instead of ng-container… etc…

<ion-list>                 <ion-item>                     <div *ngfor="let answer of question.answers">                         <div [ngswitch]="question.questiontype_id">                             <span *ngswitchcase="questiontype.yesno">                                                 <span *ngif="answer.description=='yes'" style="  display: inline-block;">                                                             <button ion-fab  right><ion-icon name="checkmark"></ion-icon></button>                                                         </span>                                                  <span *ngif="answer.description=='no'" style="  display: inline-block;">                                                                 <button ion-fab color="danger" left><ion-icon name="close"></ion-icon></button>                                                         </span>                             </span>                             <ng-container *ngswitchcase="questiontype.onechoise">                                 {{ answer.description }}                             </ng-container>                             <ng-container *ngswitchcase="questiontype.mutiplechoice">                                 {{ answer.description }}                                 <!-- <ion-label>{{ answer.description }}</ion-label> -->                                 <!-- <ion-checkbox color="dark" checked="answer.checked" [(ngmodel)]="answer.checked"></ion-checkbox>                                              -->                             </ng-container>                          </div>                     </div>                 </ion-item>             </ion-list>

enter image description here ngswitch works other types - yes no , or 1 choice , not here when adding ion checkbox. json working also, meaning without checkbox or without switch can see multiple options.

any ideas how can solves ? missing? puling hear day now…

did solve it?

i think solve issue.

export class homepage {        questions = [{id:1,text:'question 1', answers:[{id:1},{id:2}]},{id:2,text:'question 2', answers:[{id:11},{id:22}]}]        constructor(private navcontroller: navcontroller, private service: service, private formbuilder:formbuilder) {       this.surveyform = this.formbuilder.group({        questions: formbuilder.array([])      })        (var = 0; < this.questions.length; i++) {          // multiple          let question = formbuilder.group({            question_id: [this.questions[i].id, validators.required],            answer_ids: formbuilder.array([])          });          this.surveyform.controls['questions'].push(question);      }    }      onchange(id, ischecked, index) {      const answers = <formarray>this.surveyform.controls.questions.controls[index].controls.answer_ids            if(ischecked) {        answers.push(new formcontrol(id))      } else {        let idx = answers.controls.findindex(x => x.value == id)        answers.removeat(idx)      }    }  }
<ion-header>    <ion-navbar>      <ion-title>{{ appname }}</ion-title>    </ion-navbar>  </ion-header>    <ion-content padding>   <div *ngif="surveyform">      <form [formgroup]="surveyform">        <div formarrayname="questions">          <div *ngfor="let question of questions; let = index" [formgroupname]="i" padding-bottom>            <ion-row>              <ion-col col-10>                <h5>{{ question.text }}</h5>                <ng-container>                  <ion-list formarrayname="answer_ids">                    <div *ngfor="let choice of question.answers; let j = index">                      <ion-item>                        <ion-label style="white-space: normal;">{{ choice.id }}</ion-label>                        <ion-checkbox (ionchange)="onchange(choice.id, $event.checked, i)" value="choice.id"></ion-checkbox>                      </ion-item>                    </div>                  </ion-list>                </ng-container>              </ion-col>            </ion-row>        </div>        </div>      </form>    </div>        <pre>{{surveyform.value | json}}</pre>  </ion-content>

http://plnkr.co/edit/yv94zjypwbghalb0rlk2?p=preview trying now.


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