forms - Multi-select Button grid angular2 -


i'm trying create small grid of buttons can clicked add values array part of object creation form in angular2. specifically, buttons display time signatures, of 0 or more can selected apply new song in music database. i've been referencing following article far: https://scotch.io/tutorials/how-to-build-nested-model-driven-forms-in-angular-2.

currently when running in chrome, receive following error: core.umd.js:3004 exception: uncaught (in promise): error: error in http://localhost:3000/app/meter.component.html:1:23 caused by: cannot find control unspecified name attribute, , i'm having difficulty diagnosing element being considered unnamed in meter component. current code these components can found @ https://plnkr.co/edit/wyhzbnl8yoetvnkt6dvx?p=info.


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