The identifier has not been properly specified

Question

The identifier has not been properly specified

As a newcomer to Angular 9, I am currently working on developing an application. However, I have encountered some issues with defining properties and would greatly appreciate any assistance provided. Here's an overview of my project:

https://i.sstatic.net/ToVKG.png

This is the content of my app.component.html file directed towards my manager folder:

<button mat-raised-button id="Upgrade (click)="modal='Managers'">Managers</button>
<app-manager *ngIf="modal=='Managers'" (closemodalevent)="modal=null" [manager]="world.managers.pallier"></app-manager>

Here is a snippet from my app.component.ts file:

// Code for AppComponent goes here
// App related details will be placed in this section

Next, we have the manager.component.html code:

// Manager component HTML template resides at this location
// It handles the display and functionality of managers in the application

The issue arises when trying to access 'world' and 'server', leading to the following error messages:

'world' identifier is not defined within the context.

'server' identifier is not recognized or declared in this part of the application.

Despite declaring both 'server' and 'world' in app.component.ts, the error persists...

I extend my gratitude in advance to those willing to provide their valuable assistance.

Edit: My apologies for omitting this earlier as it was handled by someone else - presenting the manager.component.ts file:

// Import statements and Component decoratives
// Definition of methods and variables for managing components in the application

And lastly, the world.ts file structure:

// World class configuration including various attributes and parameters
// Essential data model for structuring the core functionalities of the program

angular typescript

Answer 1

Answer №1

After reviewing your app.component.html file, I noticed the following line

<app-manager *ngIf="modal=='Managers'" (closemodalevent)="modal=null" [manager]="world.managers.pallier"></app-manager>

If your manager.component.ts is expecting this input, it means that the resolved value in world.managers.pallier will be passed to the component

Based on your code structure, I assume that in your manager.component.ts you have a setup similar to this

  @Input() manager: []CustomType;

This ensures that the values align. Therefore, in your manager.component.html file, you should iterate over the manager array like this

<div class="Modal" (clickOutside)="closemodal()">
  <div><h1 class="ManagerTitle">Managers make you feel better !</h1></div>
  <div>
    <div *ngFor="let singleManager of manager">
      <div *ngIf="!singleManager.unlocked" class="ManagerLayout">
        <div>
          <div class="logo"><img class="LogoImage" 
           [attr.src]="server+singleManager.logo"></div>
        </div>
        <div>
          <div class="ManagerName">{{singleManager.name}}</div>
          <div class="ManagerCible">{{world.products.product[singleManager.idcible- 
           1].name}}</div>
        </div>
        <div class="ManagerCost">{{singleManager.seuil}}</div>
      </div>
      <button mat-raised-button id="HireButton" (click)="hireManager(singleManager)"
              [ngClass]="{'selectable': (world.money >= singleManager.seuil)}"> Hire !</button>
    </div>
  </div>
</div>

To access the server variable in the child component, you need to pass it down from the app.component as well

<app-manager *ngIf="modal=='Managers'" (closemodalevent)="modal=null" [manager]="world.managers.pallier" [server]="server"></app-manager>

Your manager.component.ts file should also include an input for the server variable as follows @Input() server: String;

This configuration should resolve the issue

I recommend checking out the Component Communication documentation for a clear understanding of how this concept works

Answer 2

After reviewing your app.component.html file, I noticed the following line

<app-manager *ngIf="modal=='Managers'" (closemodalevent)="modal=null" [manager]="world.managers.pallier"></app-manager>

If your manager.component.ts is expecting this input, it means that the resolved value in world.managers.pallier will be passed to the component

Based on your code structure, I assume that in your manager.component.ts you have a setup similar to this

  @Input() manager: []CustomType;

This ensures that the values align. Therefore, in your manager.component.html file, you should iterate over the manager array like this

<div class="Modal" (clickOutside)="closemodal()">
  <div><h1 class="ManagerTitle">Managers make you feel better !</h1></div>
  <div>
    <div *ngFor="let singleManager of manager">
      <div *ngIf="!singleManager.unlocked" class="ManagerLayout">
        <div>
          <div class="logo"><img class="LogoImage" 
           [attr.src]="server+singleManager.logo"></div>
        </div>
        <div>
          <div class="ManagerName">{{singleManager.name}}</div>
          <div class="ManagerCible">{{world.products.product[singleManager.idcible- 
           1].name}}</div>
        </div>
        <div class="ManagerCost">{{singleManager.seuil}}</div>
      </div>
      <button mat-raised-button id="HireButton" (click)="hireManager(singleManager)"
              [ngClass]="{'selectable': (world.money >= singleManager.seuil)}"> Hire !</button>
    </div>
  </div>
</div>

To access the server variable in the child component, you need to pass it down from the app.component as well

<app-manager *ngIf="modal=='Managers'" (closemodalevent)="modal=null" [manager]="world.managers.pallier" [server]="server"></app-manager>

Your manager.component.ts file should also include an input for the server variable as follows @Input() server: String;

This configuration should resolve the issue

I recommend checking out the Component Communication documentation for a clear understanding of how this concept works

Answer 3

Answer №2

Take a look at the feedback provided directly in the template.

<div class="Modal" (clickOutside)="closemodal()">
  <div><h1 class="ManagerTitle">Managers make you feel better !</h1></div>
  <div>

    <!-- Ensure 'world' is a property of manager.component.ts-->
    <div *ngFor="let manager of world.managers.pallier">

      <div *ngIf="!manager.unlocked" class="ManagerLayout">
        <div>

          <!-- Remember to put 'server' inside single quotes -->
          <div class="logo"><img class="LogoImage" [attr.src]="'server'+manager.logo"></div>

        </div>
        <div>
          <div class="ManagerName">{{manager.name}}</div>
          <div class="ManagerCible">{{world.products.product[manager.idcible-1].name}}</div>
        </div>
        <div class="ManagerCost">{{manager.seuil}}</div>
      </div>
      <button mat-raised-button id="HireButton" (click)="hireManager(manager)"
              [ngClass]="{'selectable': (world.money >= manager.seuil)}"> Hire !</button>
    </div>
  </div>
</div>

In addition, it's recommended to utilize optional chaining within the template.

Instead of:

<div class="ManagerCible">
  {{world.products.product[manager.idcible-1].name}}
</div>

Use:

<div class="ManagerCible">
  {{world?.products?.product[manager.idcible-1]?.name}}
</div>

The question marks will safeguard your code against null values (consider if world is null/undefined.... an error would occur trying to access products of undefined. The question mark prevents this error).

Answer 4

Take a look at the feedback provided directly in the template.

<div class="Modal" (clickOutside)="closemodal()">
  <div><h1 class="ManagerTitle">Managers make you feel better !</h1></div>
  <div>

    <!-- Ensure 'world' is a property of manager.component.ts-->
    <div *ngFor="let manager of world.managers.pallier">

      <div *ngIf="!manager.unlocked" class="ManagerLayout">
        <div>

          <!-- Remember to put 'server' inside single quotes -->
          <div class="logo"><img class="LogoImage" [attr.src]="'server'+manager.logo"></div>

        </div>
        <div>
          <div class="ManagerName">{{manager.name}}</div>
          <div class="ManagerCible">{{world.products.product[manager.idcible-1].name}}</div>
        </div>
        <div class="ManagerCost">{{manager.seuil}}</div>
      </div>
      <button mat-raised-button id="HireButton" (click)="hireManager(manager)"
              [ngClass]="{'selectable': (world.money >= manager.seuil)}"> Hire !</button>
    </div>
  </div>
</div>

In addition, it's recommended to utilize optional chaining within the template.

Instead of:

<div class="ManagerCible">
  {{world.products.product[manager.idcible-1].name}}
</div>

Use:

<div class="ManagerCible">
  {{world?.products?.product[manager.idcible-1]?.name}}
</div>

The question marks will safeguard your code against null values (consider if world is null/undefined.... an error would occur trying to access products of undefined. The question mark prevents this error).

The identifier has not been properly specified

Answer №1

Answer №2

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