Kind of recursive usage of an Component possible?










1















After searching for like two hours for a solution I decided to ask some pros suspecting the solution could be quite simple.



It is an Angular7 project.
I would like to have a "goal" in my goals component with a button "+". When you click that button I want to have annother goal being added to the page. So I want to click a button of the goal component to create a new goal, which is something like recursive to me.



goals.component.html:



<input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
<br/>
<br/>
<app-goal id="lastGivenId+1"></app-goal>


goals.component.ts:



import Component, OnInit from '@angular/core';

@Component(
selector: 'app-goals',
templateUrl: './goals.component.html',
styleUrls: ['./goals.component.scss']
)
export class GoalsComponent implements OnInit
lastGivenId: number = 0;
constructor()

ngOnInit()





goal.component.ts and goal.component.html:






//Typescript code
import Component, OnInit, Input from '@angular/core';

@Component(
selector: 'app-goal',
templateUrl: './goal.component.html',
styleUrls: ['./goal.component.scss']
)
export class GoalComponent implements OnInit
@Input() id : number;

constructor()

ngOnInit()

onAddLowerGoal(currentGoalID:number)
// var goalElement = document.registerElement('app-goal');
// document.body.appendChild(new goalElement());
let newGoal = document.createElement("app-goal");
newGoal.setAttribute("id", "999");
let currentGoal = document.getElementById(currentGoalID.toString());
document.body.insertBefore(newGoal, currentGoal);


<html>
<div id="id" class="goal">goalid</div>
<button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
</html>





This way, it creates an app-goal element, but the div and button elements within the app-goal element is missing.
How can this problem be solved? Any help is welcome. Thanks in advance.










share|improve this question


























    1















    After searching for like two hours for a solution I decided to ask some pros suspecting the solution could be quite simple.



    It is an Angular7 project.
    I would like to have a "goal" in my goals component with a button "+". When you click that button I want to have annother goal being added to the page. So I want to click a button of the goal component to create a new goal, which is something like recursive to me.



    goals.component.html:



    <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
    <br/>
    <br/>
    <app-goal id="lastGivenId+1"></app-goal>


    goals.component.ts:



    import Component, OnInit from '@angular/core';

    @Component(
    selector: 'app-goals',
    templateUrl: './goals.component.html',
    styleUrls: ['./goals.component.scss']
    )
    export class GoalsComponent implements OnInit
    lastGivenId: number = 0;
    constructor()

    ngOnInit()





    goal.component.ts and goal.component.html:






    //Typescript code
    import Component, OnInit, Input from '@angular/core';

    @Component(
    selector: 'app-goal',
    templateUrl: './goal.component.html',
    styleUrls: ['./goal.component.scss']
    )
    export class GoalComponent implements OnInit
    @Input() id : number;

    constructor()

    ngOnInit()

    onAddLowerGoal(currentGoalID:number)
    // var goalElement = document.registerElement('app-goal');
    // document.body.appendChild(new goalElement());
    let newGoal = document.createElement("app-goal");
    newGoal.setAttribute("id", "999");
    let currentGoal = document.getElementById(currentGoalID.toString());
    document.body.insertBefore(newGoal, currentGoal);


    <html>
    <div id="id" class="goal">goalid</div>
    <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
    </html>





    This way, it creates an app-goal element, but the div and button elements within the app-goal element is missing.
    How can this problem be solved? Any help is welcome. Thanks in advance.










    share|improve this question
























      1












      1








      1








      After searching for like two hours for a solution I decided to ask some pros suspecting the solution could be quite simple.



      It is an Angular7 project.
      I would like to have a "goal" in my goals component with a button "+". When you click that button I want to have annother goal being added to the page. So I want to click a button of the goal component to create a new goal, which is something like recursive to me.



      goals.component.html:



      <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
      <br/>
      <br/>
      <app-goal id="lastGivenId+1"></app-goal>


      goals.component.ts:



      import Component, OnInit from '@angular/core';

      @Component(
      selector: 'app-goals',
      templateUrl: './goals.component.html',
      styleUrls: ['./goals.component.scss']
      )
      export class GoalsComponent implements OnInit
      lastGivenId: number = 0;
      constructor()

      ngOnInit()





      goal.component.ts and goal.component.html:






      //Typescript code
      import Component, OnInit, Input from '@angular/core';

      @Component(
      selector: 'app-goal',
      templateUrl: './goal.component.html',
      styleUrls: ['./goal.component.scss']
      )
      export class GoalComponent implements OnInit
      @Input() id : number;

      constructor()

      ngOnInit()

      onAddLowerGoal(currentGoalID:number)
      // var goalElement = document.registerElement('app-goal');
      // document.body.appendChild(new goalElement());
      let newGoal = document.createElement("app-goal");
      newGoal.setAttribute("id", "999");
      let currentGoal = document.getElementById(currentGoalID.toString());
      document.body.insertBefore(newGoal, currentGoal);


      <html>
      <div id="id" class="goal">goalid</div>
      <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
      </html>





      This way, it creates an app-goal element, but the div and button elements within the app-goal element is missing.
      How can this problem be solved? Any help is welcome. Thanks in advance.










      share|improve this question














      After searching for like two hours for a solution I decided to ask some pros suspecting the solution could be quite simple.



      It is an Angular7 project.
      I would like to have a "goal" in my goals component with a button "+". When you click that button I want to have annother goal being added to the page. So I want to click a button of the goal component to create a new goal, which is something like recursive to me.



      goals.component.html:



      <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
      <br/>
      <br/>
      <app-goal id="lastGivenId+1"></app-goal>


      goals.component.ts:



      import Component, OnInit from '@angular/core';

      @Component(
      selector: 'app-goals',
      templateUrl: './goals.component.html',
      styleUrls: ['./goals.component.scss']
      )
      export class GoalsComponent implements OnInit
      lastGivenId: number = 0;
      constructor()

      ngOnInit()





      goal.component.ts and goal.component.html:






      //Typescript code
      import Component, OnInit, Input from '@angular/core';

      @Component(
      selector: 'app-goal',
      templateUrl: './goal.component.html',
      styleUrls: ['./goal.component.scss']
      )
      export class GoalComponent implements OnInit
      @Input() id : number;

      constructor()

      ngOnInit()

      onAddLowerGoal(currentGoalID:number)
      // var goalElement = document.registerElement('app-goal');
      // document.body.appendChild(new goalElement());
      let newGoal = document.createElement("app-goal");
      newGoal.setAttribute("id", "999");
      let currentGoal = document.getElementById(currentGoalID.toString());
      document.body.insertBefore(newGoal, currentGoal);


      <html>
      <div id="id" class="goal">goalid</div>
      <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
      </html>





      This way, it creates an app-goal element, but the div and button elements within the app-goal element is missing.
      How can this problem be solved? Any help is welcome. Thanks in advance.






      //Typescript code
      import Component, OnInit, Input from '@angular/core';

      @Component(
      selector: 'app-goal',
      templateUrl: './goal.component.html',
      styleUrls: ['./goal.component.scss']
      )
      export class GoalComponent implements OnInit
      @Input() id : number;

      constructor()

      ngOnInit()

      onAddLowerGoal(currentGoalID:number)
      // var goalElement = document.registerElement('app-goal');
      // document.body.appendChild(new goalElement());
      let newGoal = document.createElement("app-goal");
      newGoal.setAttribute("id", "999");
      let currentGoal = document.getElementById(currentGoalID.toString());
      document.body.insertBefore(newGoal, currentGoal);


      <html>
      <div id="id" class="goal">goalid</div>
      <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
      </html>





      //Typescript code
      import Component, OnInit, Input from '@angular/core';

      @Component(
      selector: 'app-goal',
      templateUrl: './goal.component.html',
      styleUrls: ['./goal.component.scss']
      )
      export class GoalComponent implements OnInit
      @Input() id : number;

      constructor()

      ngOnInit()

      onAddLowerGoal(currentGoalID:number)
      // var goalElement = document.registerElement('app-goal');
      // document.body.appendChild(new goalElement());
      let newGoal = document.createElement("app-goal");
      newGoal.setAttribute("id", "999");
      let currentGoal = document.getElementById(currentGoalID.toString());
      document.body.insertBefore(newGoal, currentGoal);


      <html>
      <div id="id" class="goal">goalid</div>
      <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
      </html>






      html angular typescript components






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 15 '18 at 19:08









      Niklas24Niklas24

      84




      84






















          2 Answers
          2






          active

          oldest

          votes


















          0














          First glance: delete the html tags from your goal.component.html file.



          Next: you can recursively add app-goal using angular. Inserting app-goal element the javascript way only adds the <app-goal></app-goal> object. It doesn't create an angular component. It doesn't bind your data.



          Also if you're using Angular's @Input, you need to assign a component input with square braces. Do not use tags.



          goals.component.html:



          <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
          <br/>
          <br/>
          <app-goal [id]="lastGivenId+1"></app-goal>


          goal.component.html:



          <div id="id" class="goal">goalid</div>
          <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
          <div *ngFor="let subGoal of subGoals">
          <app-goal [id]="subGoal.id"></app-goal>
          </div>


          goal.component.ts:



          import Component, OnInit, Input from '@angular/core';

          @Component(
          selector: 'app-goal',
          templateUrl: './goal.component.html',
          styleUrls: ['./goal.component.scss']
          )
          export class GoalComponent implements OnInit
          @Input() id : number;
          subGoals: Array<any> = ;

          constructor()

          ngOnInit()

          onAddLowerGoal(currentGoalID: number)
          this.subGoals.push(id: currentGoalID);




          You can also use a service to store your goals and subgoals to access them later.






          share|improve this answer






























            0














            I think what you're looking for is a Reactive Form with FormArray with dynamically added form controls.



            Take a look at this for eg:



            import Component from '@angular/core';
            import FormControl, FormGroup, FormArray, FormBuilder from '@angular/forms';

            @Component(...)
            export class GoalsComponent

            goalsForm: FormGroup;

            constructor(private fb: FormBuilder)

            ngOnInit()
            this.goalsForm = this.fb.group(
            goals: this.fb.array()
            );


            onFormSubmit()
            console.log('Form Value: ', this.goalsForm.value);


            get goals()
            return (<FormArray>this.goalsForm.get('goals')).controls;


            addGoal()
            (<FormArray>this.goalsForm.get('goals')).push(this.fb.control(null));





            And here's the template for this:



            <h2>Goals:</h2>
            <form [formGroup]="goalsForm" (submit)="onFormSubmit()">
            <button type="button" (click)="addGoal()">Add Goal</button>
            <hr>
            <div *ngFor="let goal of goals; let i = index;" formArrayName="goals">
            <div>
            <label for="goal">Goal i + 1 : </label>
            <input type="text" id="goal" [formControlName]="i">
            </div>
            <br>
            </div>
            <hr>
            <button>Submit Form</button>
            </form>


            Here's a Sample StackBlitz for your ref.






            share|improve this answer























            • Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

              – Niklas24
              Nov 15 '18 at 20:04











            • And then each lower goal will have it's own lower goal?

              – SiddAjmera
              Nov 15 '18 at 20:05











            • Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

              – Niklas24
              Nov 15 '18 at 20:12











            • There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

              – Niklas24
              Nov 15 '18 at 20:38










            Your Answer






            StackExchange.ifUsing("editor", function ()
            StackExchange.using("externalEditor", function ()
            StackExchange.using("snippets", function ()
            StackExchange.snippets.init();
            );
            );
            , "code-snippets");

            StackExchange.ready(function()
            var channelOptions =
            tags: "".split(" "),
            id: "1"
            ;
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function()
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled)
            StackExchange.using("snippets", function()
            createEditor();
            );

            else
            createEditor();

            );

            function createEditor()
            StackExchange.prepareEditor(
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader:
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            ,
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            );



            );













            draft saved

            draft discarded


















            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53326385%2fkind-of-recursive-usage-of-an-component-possible%23new-answer', 'question_page');

            );

            Post as a guest















            Required, but never shown

























            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            First glance: delete the html tags from your goal.component.html file.



            Next: you can recursively add app-goal using angular. Inserting app-goal element the javascript way only adds the <app-goal></app-goal> object. It doesn't create an angular component. It doesn't bind your data.



            Also if you're using Angular's @Input, you need to assign a component input with square braces. Do not use tags.



            goals.component.html:



            <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
            <br/>
            <br/>
            <app-goal [id]="lastGivenId+1"></app-goal>


            goal.component.html:



            <div id="id" class="goal">goalid</div>
            <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
            <div *ngFor="let subGoal of subGoals">
            <app-goal [id]="subGoal.id"></app-goal>
            </div>


            goal.component.ts:



            import Component, OnInit, Input from '@angular/core';

            @Component(
            selector: 'app-goal',
            templateUrl: './goal.component.html',
            styleUrls: ['./goal.component.scss']
            )
            export class GoalComponent implements OnInit
            @Input() id : number;
            subGoals: Array<any> = ;

            constructor()

            ngOnInit()

            onAddLowerGoal(currentGoalID: number)
            this.subGoals.push(id: currentGoalID);




            You can also use a service to store your goals and subgoals to access them later.






            share|improve this answer



























              0














              First glance: delete the html tags from your goal.component.html file.



              Next: you can recursively add app-goal using angular. Inserting app-goal element the javascript way only adds the <app-goal></app-goal> object. It doesn't create an angular component. It doesn't bind your data.



              Also if you're using Angular's @Input, you need to assign a component input with square braces. Do not use tags.



              goals.component.html:



              <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
              <br/>
              <br/>
              <app-goal [id]="lastGivenId+1"></app-goal>


              goal.component.html:



              <div id="id" class="goal">goalid</div>
              <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
              <div *ngFor="let subGoal of subGoals">
              <app-goal [id]="subGoal.id"></app-goal>
              </div>


              goal.component.ts:



              import Component, OnInit, Input from '@angular/core';

              @Component(
              selector: 'app-goal',
              templateUrl: './goal.component.html',
              styleUrls: ['./goal.component.scss']
              )
              export class GoalComponent implements OnInit
              @Input() id : number;
              subGoals: Array<any> = ;

              constructor()

              ngOnInit()

              onAddLowerGoal(currentGoalID: number)
              this.subGoals.push(id: currentGoalID);




              You can also use a service to store your goals and subgoals to access them later.






              share|improve this answer

























                0












                0








                0







                First glance: delete the html tags from your goal.component.html file.



                Next: you can recursively add app-goal using angular. Inserting app-goal element the javascript way only adds the <app-goal></app-goal> object. It doesn't create an angular component. It doesn't bind your data.



                Also if you're using Angular's @Input, you need to assign a component input with square braces. Do not use tags.



                goals.component.html:



                <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
                <br/>
                <br/>
                <app-goal [id]="lastGivenId+1"></app-goal>


                goal.component.html:



                <div id="id" class="goal">goalid</div>
                <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
                <div *ngFor="let subGoal of subGoals">
                <app-goal [id]="subGoal.id"></app-goal>
                </div>


                goal.component.ts:



                import Component, OnInit, Input from '@angular/core';

                @Component(
                selector: 'app-goal',
                templateUrl: './goal.component.html',
                styleUrls: ['./goal.component.scss']
                )
                export class GoalComponent implements OnInit
                @Input() id : number;
                subGoals: Array<any> = ;

                constructor()

                ngOnInit()

                onAddLowerGoal(currentGoalID: number)
                this.subGoals.push(id: currentGoalID);




                You can also use a service to store your goals and subgoals to access them later.






                share|improve this answer













                First glance: delete the html tags from your goal.component.html file.



                Next: you can recursively add app-goal using angular. Inserting app-goal element the javascript way only adds the <app-goal></app-goal> object. It doesn't create an angular component. It doesn't bind your data.



                Also if you're using Angular's @Input, you need to assign a component input with square braces. Do not use tags.



                goals.component.html:



                <input type="text" value="Ich brauche einen Laptop für maximal 1000 Euro.">
                <br/>
                <br/>
                <app-goal [id]="lastGivenId+1"></app-goal>


                goal.component.html:



                <div id="id" class="goal">goalid</div>
                <button id="AddLowerGoal1" (click)="onAddLowerGoal(999)">+</button>
                <div *ngFor="let subGoal of subGoals">
                <app-goal [id]="subGoal.id"></app-goal>
                </div>


                goal.component.ts:



                import Component, OnInit, Input from '@angular/core';

                @Component(
                selector: 'app-goal',
                templateUrl: './goal.component.html',
                styleUrls: ['./goal.component.scss']
                )
                export class GoalComponent implements OnInit
                @Input() id : number;
                subGoals: Array<any> = ;

                constructor()

                ngOnInit()

                onAddLowerGoal(currentGoalID: number)
                this.subGoals.push(id: currentGoalID);




                You can also use a service to store your goals and subgoals to access them later.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 16 '18 at 9:37









                JasmonateJasmonate

                30836




                30836























                    0














                    I think what you're looking for is a Reactive Form with FormArray with dynamically added form controls.



                    Take a look at this for eg:



                    import Component from '@angular/core';
                    import FormControl, FormGroup, FormArray, FormBuilder from '@angular/forms';

                    @Component(...)
                    export class GoalsComponent

                    goalsForm: FormGroup;

                    constructor(private fb: FormBuilder)

                    ngOnInit()
                    this.goalsForm = this.fb.group(
                    goals: this.fb.array()
                    );


                    onFormSubmit()
                    console.log('Form Value: ', this.goalsForm.value);


                    get goals()
                    return (<FormArray>this.goalsForm.get('goals')).controls;


                    addGoal()
                    (<FormArray>this.goalsForm.get('goals')).push(this.fb.control(null));





                    And here's the template for this:



                    <h2>Goals:</h2>
                    <form [formGroup]="goalsForm" (submit)="onFormSubmit()">
                    <button type="button" (click)="addGoal()">Add Goal</button>
                    <hr>
                    <div *ngFor="let goal of goals; let i = index;" formArrayName="goals">
                    <div>
                    <label for="goal">Goal i + 1 : </label>
                    <input type="text" id="goal" [formControlName]="i">
                    </div>
                    <br>
                    </div>
                    <hr>
                    <button>Submit Form</button>
                    </form>


                    Here's a Sample StackBlitz for your ref.






                    share|improve this answer























                    • Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                      – Niklas24
                      Nov 15 '18 at 20:04











                    • And then each lower goal will have it's own lower goal?

                      – SiddAjmera
                      Nov 15 '18 at 20:05











                    • Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                      – Niklas24
                      Nov 15 '18 at 20:12











                    • There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                      – Niklas24
                      Nov 15 '18 at 20:38















                    0














                    I think what you're looking for is a Reactive Form with FormArray with dynamically added form controls.



                    Take a look at this for eg:



                    import Component from '@angular/core';
                    import FormControl, FormGroup, FormArray, FormBuilder from '@angular/forms';

                    @Component(...)
                    export class GoalsComponent

                    goalsForm: FormGroup;

                    constructor(private fb: FormBuilder)

                    ngOnInit()
                    this.goalsForm = this.fb.group(
                    goals: this.fb.array()
                    );


                    onFormSubmit()
                    console.log('Form Value: ', this.goalsForm.value);


                    get goals()
                    return (<FormArray>this.goalsForm.get('goals')).controls;


                    addGoal()
                    (<FormArray>this.goalsForm.get('goals')).push(this.fb.control(null));





                    And here's the template for this:



                    <h2>Goals:</h2>
                    <form [formGroup]="goalsForm" (submit)="onFormSubmit()">
                    <button type="button" (click)="addGoal()">Add Goal</button>
                    <hr>
                    <div *ngFor="let goal of goals; let i = index;" formArrayName="goals">
                    <div>
                    <label for="goal">Goal i + 1 : </label>
                    <input type="text" id="goal" [formControlName]="i">
                    </div>
                    <br>
                    </div>
                    <hr>
                    <button>Submit Form</button>
                    </form>


                    Here's a Sample StackBlitz for your ref.






                    share|improve this answer























                    • Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                      – Niklas24
                      Nov 15 '18 at 20:04











                    • And then each lower goal will have it's own lower goal?

                      – SiddAjmera
                      Nov 15 '18 at 20:05











                    • Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                      – Niklas24
                      Nov 15 '18 at 20:12











                    • There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                      – Niklas24
                      Nov 15 '18 at 20:38













                    0












                    0








                    0







                    I think what you're looking for is a Reactive Form with FormArray with dynamically added form controls.



                    Take a look at this for eg:



                    import Component from '@angular/core';
                    import FormControl, FormGroup, FormArray, FormBuilder from '@angular/forms';

                    @Component(...)
                    export class GoalsComponent

                    goalsForm: FormGroup;

                    constructor(private fb: FormBuilder)

                    ngOnInit()
                    this.goalsForm = this.fb.group(
                    goals: this.fb.array()
                    );


                    onFormSubmit()
                    console.log('Form Value: ', this.goalsForm.value);


                    get goals()
                    return (<FormArray>this.goalsForm.get('goals')).controls;


                    addGoal()
                    (<FormArray>this.goalsForm.get('goals')).push(this.fb.control(null));





                    And here's the template for this:



                    <h2>Goals:</h2>
                    <form [formGroup]="goalsForm" (submit)="onFormSubmit()">
                    <button type="button" (click)="addGoal()">Add Goal</button>
                    <hr>
                    <div *ngFor="let goal of goals; let i = index;" formArrayName="goals">
                    <div>
                    <label for="goal">Goal i + 1 : </label>
                    <input type="text" id="goal" [formControlName]="i">
                    </div>
                    <br>
                    </div>
                    <hr>
                    <button>Submit Form</button>
                    </form>


                    Here's a Sample StackBlitz for your ref.






                    share|improve this answer













                    I think what you're looking for is a Reactive Form with FormArray with dynamically added form controls.



                    Take a look at this for eg:



                    import Component from '@angular/core';
                    import FormControl, FormGroup, FormArray, FormBuilder from '@angular/forms';

                    @Component(...)
                    export class GoalsComponent

                    goalsForm: FormGroup;

                    constructor(private fb: FormBuilder)

                    ngOnInit()
                    this.goalsForm = this.fb.group(
                    goals: this.fb.array()
                    );


                    onFormSubmit()
                    console.log('Form Value: ', this.goalsForm.value);


                    get goals()
                    return (<FormArray>this.goalsForm.get('goals')).controls;


                    addGoal()
                    (<FormArray>this.goalsForm.get('goals')).push(this.fb.control(null));





                    And here's the template for this:



                    <h2>Goals:</h2>
                    <form [formGroup]="goalsForm" (submit)="onFormSubmit()">
                    <button type="button" (click)="addGoal()">Add Goal</button>
                    <hr>
                    <div *ngFor="let goal of goals; let i = index;" formArrayName="goals">
                    <div>
                    <label for="goal">Goal i + 1 : </label>
                    <input type="text" id="goal" [formControlName]="i">
                    </div>
                    <br>
                    </div>
                    <hr>
                    <button>Submit Form</button>
                    </form>


                    Here's a Sample StackBlitz for your ref.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Nov 15 '18 at 19:25









                    SiddAjmeraSiddAjmera

                    15.6k31239




                    15.6k31239












                    • Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                      – Niklas24
                      Nov 15 '18 at 20:04











                    • And then each lower goal will have it's own lower goal?

                      – SiddAjmera
                      Nov 15 '18 at 20:05











                    • Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                      – Niklas24
                      Nov 15 '18 at 20:12











                    • There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                      – Niklas24
                      Nov 15 '18 at 20:38

















                    • Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                      – Niklas24
                      Nov 15 '18 at 20:04











                    • And then each lower goal will have it's own lower goal?

                      – SiddAjmera
                      Nov 15 '18 at 20:05











                    • Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                      – Niklas24
                      Nov 15 '18 at 20:12











                    • There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                      – Niklas24
                      Nov 15 '18 at 20:38
















                    Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                    – Niklas24
                    Nov 15 '18 at 20:04





                    Thanks a lot for answering. But what I'd like to happen in your Sample StackBlitz is that when clicking the Add button there would apper annother Add button. The thing is I want to have an upper goal and be able to create a lower goal to that upper goal.

                    – Niklas24
                    Nov 15 '18 at 20:04













                    And then each lower goal will have it's own lower goal?

                    – SiddAjmera
                    Nov 15 '18 at 20:05





                    And then each lower goal will have it's own lower goal?

                    – SiddAjmera
                    Nov 15 '18 at 20:05













                    Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                    – Niklas24
                    Nov 15 '18 at 20:12





                    Exactly. Each goal (upper or lower goal) can have it's own lower goal, but it doens't need to.

                    – Niklas24
                    Nov 15 '18 at 20:12













                    There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                    – Niklas24
                    Nov 15 '18 at 20:38





                    There can also be multiple lower goals to an upper goal. Every goal shall have a name (I used a div element in order to present the name) and it's add button to create a lower goal.

                    – Niklas24
                    Nov 15 '18 at 20:38

















                    draft saved

                    draft discarded
















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid


                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.

                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function ()
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53326385%2fkind-of-recursive-usage-of-an-component-possible%23new-answer', 'question_page');

                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Top Tejano songwriter Luis Silva dead of heart attack at 64

                    政党

                    天津地下鉄3号線