1. in route

                   {
                    path: 'document-entry',
                    loadChildren: () => import('./document-entry/document-entry.module').then(m => m.DocumentEntryModule)
                  },

                  {
                    path: 'document-delivery',
                    loadChildren: () => import('./document-entry/document-entry.module').then(m => m.DocumentEntryModule)
                    
                  },

                  {
                    path: 'document-followup',
                    loadChildren: () => import('./document-entry/document-entry.module').then(m => m.DocumentEntryModule)
                    
                  },
                  
                

2. in listing component

    
                  ....
                constructor(                  
                  private router: Router,
                  
                  
                ) { }
                .....

                this.searchForm = this.fb.group({      
               
                   'page': [''],
                    'section' :['']
                });
                .....

                loadListing(pageNumber){
                    this.searchForm.patchValue({'section':this.router.url.split('?')[0]});
                }
                .....

                gotoPage(url){  
                    if(this.searchForm.get('section').value!=''){
                      url+='&section='+this.searchForm.get('section').value;
                    }
                    this.router.navigateByUrl(url);
                }


                

3. in details component

                ngOnInit(): void {
                    
                    this.route.queryParams
                      .subscribe(params => {
                          this.detailsId=params.id;                        

                          if(params.section){
                            this.backUrl=params.section;              
                          }

                          
                      });

                }


                gotoPage(url){    
                    if(this.backUrl!=''){
                      url=this.backUrl;
                    }
                    this.router.navigateByUrl(url);
                  }

                

4. in api

                if(isset($input['section'])){
                    switch($input['section']){
                        case '/document-approval':
                          $query = $query->where('document_entries.status_id',$input['status_id']);
                        break;  
                      }
                }