The Angular service is sending back the error message "undefined" when trying to retrieve data with the ID parameter from the requested

When calling a service from a component, I am encountering a 400 bad request error with the following message:

"Invalid data 'undefined' for parameter id"

It's worth noting that the getProduct method in the API is functioning correctly.

Service.ts

getProduct(ID: number): Observable<any> {
  // console.log('ID', ID)
  return this.http.get(environment.api+'/products/' + JSON.stringify(ID)) as Observable<Product[]>;
}

component.ts

searchIdAction(id: number){
  return this.venteService.getProduct(id).subscribe(
    product => {
      // console.log('product', product);
      this.product = product;
    },
  )
}

component.html

<clr-input-container *ngIf="options == 1">
  <label>Search:</label>
  <input clrInput placeholder="search by id..." type="number"  (keyup.enter)="searchIdAction(modelProduct.id)"/>
  <!-- name="name" [(ngModel)]="modelProduct.id"   -->
</clr-input-container>

Your assistance would be greatly appreciated. Thank you in advance

Answer №1

It appears that your code is missing some necessary model binding for the input, causing the id to always be undefined in Angular. To resolve this issue, you need to specify that the input's value should be assigned to modelProduct.id.

To achieve this, you can either utilize the ngModel directive as mentioned below the input, or access the input value directly if storing it is not required:

<input #myInput clrInput placeholder="search by id ..." type="number"  (keyup.enter)="searchIdAction(myInput.value)"/>

Answer №2

The issue has been successfully resolved. Hopefully, this solution can benefit others as well.

<input name="idInput" [(ngModel)]="idInput" type="text" (keyup)="searchProduct(idInput)" clrInput placeholder="search by name ..." />

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