See
also
http://stackoverflow.com/questions/35206821/angular2-access-global-service-without-including-it-in-every-constructor/35207105#35207105
On Friday, February 5, 2016 at 12:16:48 PM UTC+1, Günter Zöchbauer wrote:
>
> I forgot to mention that I replaced `implements` by `extends`
>
> with `implements` you don't call `super()` but you still need to implement
> the constructor.
>
> class Oldman implements Person{
> private massageService : MassageService;
> constructor(massageService: MassageService){ // you can't avoid
> implementing the constructor in each subclass
>
> }
> }
>
> On Friday, February 5, 2016 at 12:14:02 PM UTC+1, Günter Zöchbauer wrote:
>>
>> class Oldman extends Person{
>> constructor(massageService: MassageService){ // you can't avoid
>> implementing the constructor in each subclass
>> super(messageService); // super must be first line in constructor
>>
>> }
>> }
>>
>> On Friday, February 5, 2016 at 12:55:11 AM UTC+1, Long Field wrote:
>>>
>>> Hi All
>>> Basically, super class has construction injection and child class
>>> implement super class, how to do this? below link gives a solution, but I
>>> am not sure what it is,
>>>
>>>
>>> http://willseitz-code.blogspot.com.au/2015/08/angular-and-typescript-inheritance-and.html?showComment=1454628375575
>>>
>>>
>>> @Injectable()
>>> class MassageService{
>>> public getMassage(){ console.log("relax!")}
>>> }
>>>
>>> @Component({
>>> providers [MassageService]
>>> })
>>>
>>> class Person{
>>> private massageService : MassageService;
>>> constructor(massageService: MassageService)
>>> }
>>>
>>>
>>> *****************************
>>> class Oldman implements Person{
>>> constructor(){} ????????????
>>> }
>>>
>>
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