The input argument must be of type 'PollModel', as the property 'pollId' is required and missing in the provided 'any[]' type

Hey there!

An issue popped up when I tried to pass an empty array as a model in my Angular project. The error message reads: "Argument of type 'any[]' is not assignable to parameter of type 'PollModel'. Property 'pollId' is missing in type 'any[]'." Can someone please assist me with this error? As a newbie to Angular, any guidance would be greatly appreciated.

HTML:

<button type="button" (click)="showAddModal('add',[])"> Create a poll</i></button>

Component:

showAddModal(action: string, poll: PollModel) {
            //show add modal method
            }

Model:

export class PollModel {
  pollId: string;
  pollName: string;
  pollDesc: string;
  pollOwnerId: string;
  startDate: Date;
  endDate: Date;
  createdDate: Date;
  modifiedDate: Date;
  pollType: string;
}

I am trying to pass an empty array as a model. However I got the error above. I am new to angular. Any help will be appreciated.

angulartypescript

Answer №1

When using your showAddModal function, make sure to provide two parameters: a string as the first parameter, and an object of type PollModel as the second parameter.

If you encounter an error, it could be due to passing an array instead of an object as the second argument in the function call.

To resolve this issue, consider updating the method syntax or adjusting the parameter types per the examples below.

<button type="button" (click)="showAddModal('add',[])"> Create a poll</i></button>

showAddModal(action: string, poll: PollModel[]) {
            //method logic for showing add modal
}

Alternatively,

Create an object with properties that align with PollModel, then pass it as an argument like so:

<button type="button" (click)="showAddModal('add',{'id': 2})"> Create a poll</i></button>

showAddModal(action: string, poll: PollModel) {
            //method logic for showing add modal
}

I hope these suggestions help with resolving your issue!

Answer №2

Ensure that your component script includes the following:

displayAddDialog(actionType: string, pollsList: PollModel[]) {
        //method to show the add modal
        }

Answer №3

Method 1 If you prefer having an Array inside the function:

HTML:

<button type="button" (click)="showAddModal('add')"> Create a poll</i></button>

Component:

showAddModal(action: string, poll: PollModel[] = []) {
      //method to show add modal
}

Method 2 If you prefer having an object inside the function:

HTML:

<button type="button" (click)="showAddModal('add')"> Create a poll</i></button>

Component:

showAddModal(action: string, poll: any = {}) {
      //method to show add modal
}

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