Primeng: Error appears while using p-checkbox in formArray control

[nd-jar]

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Current behavior
When i try to use p-checkbox in *ngFor loop, an error appears in console:

Error: this.model.indexOf is not a function

and nothing works at all

Expected behavior
If you change code from p-checkbox to simple input or mat-checkbox, everything works fine

Minimal reproduction of the problem with instructions
https://stackblitz.com/edit/angular-primeng-p-checkbox-issue

What is the motivation / use case for changing the behavior?

Please tell us about your environment:
Ubuntu 16.04, Intellij Idea, @angular/cli

• Angular version: 5.2.8

• PrimeNG version: 5.2.5

• Browser: Chrome Version 64.0.3282.167 (Official Build) (64-bit)

[mardon1975]

Angular version: 6.0
PrimeNG version: 5.25 and 6.0 alpha01

I have just tried to embed an primeng check box in my component directive. When i click the check box I get the same message as the issue.

TypeError: this.model.indexOf is not a function

The error occurs on line 64 of the checkbox.js file.

[w3chtml]

Binary attribute helps me, stackoverflow

[nd-jar]

Yeah, nice workaround, thank you!

[cagataycivici]

I'm unable to replicate with the latest PrimeNG. If the issue still persists with the new version please create a new issue with our stackblitz template.

[tdekoekkoek]

primeng checkbox is really buggy. This should be brought up to the standard of other libraries and use formControlName