CODEWITHSUNDEEP
angularngrxapollo-clientngrx-effects
Daniel Chikaka
Daniel Chikaka

Reputation: 1692

Using angular ngrx store effects to query data by id

I am using ngrx 6 and angular 6, my code looks as follows:

  1. effects.ts 

    import * as fromProjectMemberActions from '../project-member/project-member.actions';
import * as fromProjectMemberGraphQL from '../../members/members.graphql';

@Effect({dispatch: false})
loadProjectMember$ = this.actions$.pipe(
ofType(fromProjectMemberActions.ProjectMemberActionTypes.GetProjectMembers),
tap(
  action => {
    this.apollo.watchQuery({
      query: fromProjectMemberGraphQL.GET_ALL_PROJECT_MEMBERS,
      variables: { 
        projectID : // Project ID is needed
      }
    }).valueChanges.subscribe((response: any) => {
        console.log(response)
        this.store.dispatch(
          new fromProjectMemberActions.UpsertProjectMembers({
            projectMembers: response.data.findAllProjectMember
          })
        )
        this.store.dispatch(
              new fromProjectMemberActions.DoneLoadingProjectMembers()
          )
    })
  }
)
);

  2. project-member.actions.ts

    export class GetProjectMembers implements Action {
  readonly type = ProjectMemberActionTypes.GetProjectMembers;
}
export class UpsertProjectMembers implements Action {
  readonly type = ProjectMemberActionTypes.UpsertProjectMembers;
    constructor(public payload: { projectMembers: ProjectMember[] }) {}
  }

  3. members.graphql.ts

    import gql from 'graphql-tag';

 export const GET_ALL_PROJECT_MEMBERS = gql`
 query getAllProjectMembers($projectID: Long!) {
    findAllProjectMembers(projectId: $projectID) {
      id
      memberId
      memberType
   }
 }
`;

  4. The given graphql API is seen as follows on graphql playground

    query{
  findAllProjectMembers(projectId: projectID) {
    id
    memberId
    memberType
  }
}

    If you replace projectID above with a number eg: 2 it will query data successfully

  5. The url where the Project ID to be used on number 1 is passed through the following URL 

    http://localhost/project-manager/view-project/2/members

I need help to extract that project ID above and use it in effects file to query a list of members

Upvotes: 4

Views: 742

Answers (1)

rijin
rijin

Reputation: 1759

I would say.

// update project-member.actions.ts

export class GetProjectMembers implements Action {
  readonly type = ProjectMemberActionTypes.GetProjectMembers;
  constructor(public payload: { projectId: number }) {}
}

// and update effect 

@Effect({dispatch: false})
loadProjectMember$ = this.actions$.pipe(
ofType(fromProjectMemberActions.ProjectMemberActionTypes.GetProjectMembers),
map((action: any) => action.payload),
tap(
  payload => {
    this.apollo.watchQuery({
      query: fromProjectMemberGraphQL.GET_ALL_PROJECT_MEMBERS,
      variables: { 
        projectID : payload.projectId
      }
    }).valueChanges.subscribe((response: any) => {
        console.log(response)
        this.store.dispatch(
          new fromProjectMemberActions.UpsertProjectMembers({
            projectMembers: response.data.findAllProjectMember
          })
        )
        this.store.dispatch(
              new fromProjectMemberActions.DoneLoadingProjectMembers()
          )
    })
  }
)
);

// may be in the component or where you dispatching action Pass projectId

subscribe to router {
  this.store.dispatch(new GetProjectMembers({ projectId })
}

Upvotes: 4

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