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typescript
6 months ago
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// Base Task Model
export class Task {
  constructor(
      public goal_id: string,
      public name: string,
      public description: string,
      public priority: string,
      public taskDate: string,
  ) {}
}


// Base Goal Model
export class Goal {
  constructor(
      public name: string,
      public isMainGoal: boolean,
      public details: string,
      public category: string,
      public lifeArea: string,
      public creationDate: string,
      public priority: string,
      public endDate: Date,

  ) {}
}



// Task Service

  tasksCollection():Observable<any> {
    return this.fetchTasks()
      .pipe(
        map(response => {
          const tasksArray = [];
          for (const key in response) {
            if (response.hasOwnProperty(key)) {
              tasksArray.push({ ...response[key], id: key });
            }
          }
          return tasksArray;
        })
      );
  }


// How, in Dashboard Component, modify each Task Item from tasksCollection so that new Key(goalCategory) and Value
// being the category name from queried Goal Object (queried Goal based on foreign key) is added to each Task ?

// Helper Methods 
getGoalById(id:string):Observable<any> {
    return this.goalsCollection()
    .pipe(
      map(response => {
        response = response.filter((v:any) => v.id === id);
        return response;
      })
    )
}
getGoalCategory(item:any) {
		this.goalsService.getGoalById(item.goal_id).subscribe(d => {
      this.goalCategory = d;
    })
}

// Dashboard Component
export class DashboardComponent implements OnInit {

ngOnInit() {
    this.tasksService.tasksCollection()
    .pipe(
        concatMap(tasksArray => {

          tasksArray = tasksArray.map((item:any) => {
            this.getGoalCategory(item); // method which 
            return {
              goal_id: item.goal_id,
              description: item.description,
              id: item.id,
              isMainGoal: item.isMainGoal,
              name: item.name,
              goalCategory: this.goalCategory // -> new key with value from Goal!
            }
          })
          return tasksArray;
        })
    )
    .subscribe(
        (tasks:any) => {
          console.log(tasks);
        }
      )
}

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