observable - Angular 2 - Access subscribe value -


how access this.existingusers in formbuilder? console.log(value) doesn't show in console. console.log(this.id) returns correct parameter.

export class usercomponent implements oninit {    existinguser: = {};        ngoninit() {          this.activatedroute.params.subscribe((params: params) => {           this.id = params['id'];           console.log(this.id);           this.db.object(`/users/${this.id}`).map(value => {             console.log(value);             this.existinguser = value;           })         });          console.log(this.existinguser);          this.userform = this.formbuilder.group({           first_name: [this.existinguser.first_name, validators.required],         })       };  }

i'm not clear on trying ... need code within .map method. this:

export class usercomponent implements oninit {    existinguser: = {};    ngoninit() {      this.activatedroute.params.subscribe((params: params) => {       this.id = params['id'];       console.log(this.id);       this.db.object(`/users/${this.id}`).map(value => {         console.log(value);         this.existinguser = value;         console.log(this.existinguser);           this.userform = this.formbuilder.group({           first_name: [this.existinguser.first_name, validators.required],         })       })     });    };

}

or put code in method called here.

update: here example application similar:

ngoninit(): void {     this.productform = this.fb.group({         productname: ['', [validators.required,                            validators.minlength(3),                            validators.maxlength(50)]],         productcode: ['', validators.required],         starrating: ['', numbervalidators.range(1, 5)],         tags: this.fb.array([]),         description: ''     });      // read product id route parameter     this.route.params.subscribe(         params => {             let id = +params['id'];             this.getproduct(id);         }     ); }  getproduct(id: number): void {     this.productservice.getproduct(id)         .subscribe(             (product: iproduct) => this.onproductretrieved(product),             (error: any) => this.errormessage = <any>error         ); }  onproductretrieved(product: iproduct): void {     if (this.productform) {         this.productform.reset();     }     this.product = product;      if (this.product.id === 0) {         this.pagetitle = 'add product';     } else {         this.pagetitle = `edit product: ${this.product.productname}`;     }      // update data on form     this.productform.patchvalue({         productname: this.product.productname,         productcode: this.product.productcode,         starrating: this.product.starrating,         description: this.product.description     });     this.productform.setcontrol('tags', this.fb.array(this.product.tags || [])); }

you can find full set of code here: https://github.com/deborahk/angular2-reactiveforms (in apm folder)


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