How to pass object in constructor Angular?

Question

I have own class with dependency:

export class PeriodClass {

public constructor(
  private educationPeriodService: EducationPeriodService){}
}

I use this class in component:

@Component({
  providers: [PeriodClass]
});

class ComponentClass {
  public constructor(public classPeriod: PeriodClass) {
  }
}

It gives me an error:

Uncaught Error: Can't resolve all parameters for PeriodClass: (?, ?).

Cause when I inject PeriodClass in component I dont pass dependency EducationPeriodService, how to?

nircraft · Accepted Answer · 2019-01-07 20:52:28Z

2

To inject a class/Service to component, make sure it is:

answered Jan 7, 2019 at 20:52

nircraft

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Comments

GreyBeardedGeek · Accepted Answer · 2019-01-07 20:50:17Z

1

Add the @Injectable annotation to your PeriodClass.

answered Jan 7, 2019 at 20:50

GreyBeardedGeek

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