checkError(typeofValidator: string, controlName: string): boolean {
return this.CustomerModel.formCustomerGroup.contains[controlName].hasError(typeofValidator);
}
I am currently learning Angular. I came across the same code in a course video, but it is running fine in the course environment. However, I am encountering an error when I try to run it myself. I am not sure what I am doing wrong and would appreciate any help. Thanks!
Perhaps consider replacing the square brackets [] following your contains with regular parentheses ()? It appears that the error message indicates an attempt to index a function.
Therefore, your code should resemble this:
return this.CustomerModel.formCustomerGroup.contains(controlname).hasError(typeofvalidator);
By making this adjustment, the initial error should be fixed, though there may be additional issues to address.
To fix this issue, break down each step into multiple strongly typed variables.
checkForError(typeofvalidator:string, controlname:string) : boolean
{
const clientData: {group: string} = this.ClientData;
const grp: string = clientData.group;
return grp.contains[controlname].checkForError(typeofvalidator);
}
I can't explain why your approach is failing, and I can't guarantee that mine will work either for the same reasons yours isn't working. However, breaking down the problem into smaller parts makes it easier to identify the issue and address it effectively.
Once you've resolved it, you can revert to the shorter version if you prefer. But for now, it's important to pinpoint the problem and troubleshoot accordingly.
Happy debugging!
Let's tackle the issue at hand:
hasError(typeofValidator: string, controlname: string): boolean {
return this.customerModel.formCustomerGroup.controls[controlname].hasError(typeofValidator);
}
Resolution:
To fix the problem, simply substitute controlname with ControlName.
hasError(typeofValidator: string, controlName: string): boolean {
return this.customerModel.formCustomerGroup.controls[controlName].hasError(typeofValidator);
}
Forget about using contains. Opt for controls instead. Give this a shot:
return this.NewCustomer
.FormCustomerGroup
.controls[ControlName]
.hasError(TypeOfValidator);
Encountering a similar error, I managed to fix it by opting for get(controlName) over controls[controlName]. My development environment consists of Typescript 4.8.2 and Angular CLI 15.0.0
return this.customerModel.formCustomerGroup.get(controlName)?.hasError(typeofValidator)
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