diff --git a/resources/i18n/en.json b/resources/i18n/en.json
index 832fbb95aa..f835699087 100644
--- a/resources/i18n/en.json
+++ b/resources/i18n/en.json
@@ -94,9 +94,9 @@
     "filters": {
       "head": "Filters",
       "reset": "Reset filters",
-      "facet-filter": {
+      "filter": {
         "show-more": "Show more",
-        "show-less": "Show less",
+        "show-less": "Collapse",
         "author": {
           "placeholder": "Author name",
           "head": "Author"
@@ -108,6 +108,10 @@
         "subject": {
           "placeholder": "Subject",
           "head": "Subject"
+        },
+        "date": {
+          "placeholder": "Date",
+          "head": "Date"
         }
       }
     }
diff --git a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.html b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.html
index e253e65048..436f497bf5 100644
--- a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.html
+++ b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.html
@@ -1,15 +1,32 @@
-<a *ngFor="let value of filterValues; let i=index" class="d-block" [routerLink]="[getSearchLink()]"
-   [queryParams]="getQueryParams(value) | async">
-    <ng-template [ngIf]="i < (facetCount | async)">
-        <input type="checkbox" [checked]="isChecked(value) | async"/>
-        <span class="filter-value">{{value.value}}</span>
-        <span class="filter-value-count float-right">({{value.count}})</span>
-    </ng-template>
-</a>
-<a *ngIf="filterValues.length > (facetCount | async)" (click)="showMore()">{{"search.filters.facet-filter.show-more"
-    | translate}}</a>
-<a *ngIf="(currentPage | async) > 1" (click)="showLess()">{{"search.filters.facet-filter.show-less" |
-    translate}}</a>
-
-<input type="text"
-       [placeholder]="'search.filters.facet-filter.' + filterConfig.name + '.placeholder'| translate"/>
\ No newline at end of file
+<div>
+    <div class="filters">
+        <a *ngFor="let value of selectedValues" class="d-block"
+           [routerLink]="[getSearchLink()]"
+           [queryParams]="getQueryParamsWithout(value) | async">
+            <input type="checkbox" [checked]="true"/>
+            <span class="filter-value">{{value}}</span>
+        </a>
+        <a *ngFor="let value of filterValues; let i=index" class="d-block"
+           [routerLink]="[getSearchLink()]"
+           [queryParams]="getQueryParamsWith(value.value) | async">
+            <ng-template [ngIf]="i < (facetCount | async)">
+                <input type="checkbox" [checked]="false"/>
+                <span class="filter-value">{{value.value}}</span>
+                <span class="filter-value-count float-right">({{value.count}})</span>
+            </ng-template>
+        </a>
+        <div class="clearfix toggle-more-filters">
+            <a class="float-left" *ngIf="filterValues.length > (facetCount | async)"
+               (click)="showMore()">{{"search.filters.filter.show-more"
+                | translate}}</a>
+            <a class="float-right" *ngIf="(currentPage | async) > 1" (click)="showLess()">{{"search.filters.filter.show-less"
+                | translate}}</a>
+        </div>
+    </div>
+    <form #form="ngForm" (ngSubmit)="onSubmit(form.value)" class="add-filter">
+        <input type="text" [(ngModel)]="filter" name="filter" class="form-control"
+               aria-label="New filter input"
+               [placeholder]="'search.filters.filter.' + filterConfig.name + '.placeholder'| translate"/>
+        <input type="submit" class="d-none"/>
+    </form>
+</div>
\ No newline at end of file
diff --git a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.scss b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.scss
index 9ad844019b..595b2aefb8 100644
--- a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.scss
+++ b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.scss
@@ -1,2 +1,18 @@
 @import '../../../../../styles/variables.scss';
-@import '../../../../../styles/mixins.scss';
\ No newline at end of file
+@import '../../../../../styles/mixins.scss';
+
+.filters {
+    margin-top: $spacer/2;
+    margin-bottom: $spacer/2;
+    a {
+        color: $body-color;
+        &:hover {
+          text-decoration: none;
+        }
+    }
+    .toggle-more-filters a {
+        color: $link-color;
+        text-decoration: underline;
+        cursor: pointer;
+    }
+}
\ No newline at end of file
diff --git a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.ts b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.ts
index 0c9eb06baa..3b3b7312e8 100644
--- a/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.ts
+++ b/src/app/+search-page/search-filters/search-filter/search-facet-filter/search-facet-filter.component.ts
@@ -1,10 +1,10 @@
 import { Component, Input, OnInit } from '@angular/core';
 import { FacetValue } from '../../../search-service/facet-value.model';
 import { SearchFilterConfig } from '../../../search-service/search-filter-config.model';
-import { SearchService } from '../../../search-service/search.service';
-import { Params } from '@angular/router';
+import { Params, Router } from '@angular/router';
 import { Observable } from 'rxjs/Observable';
 import { SearchFilterService } from '../search-filter.service';
+import { isNotEmpty } from '../../../../shared/empty.util';
 
 /**
  * This component renders a simple item page.
@@ -21,9 +21,11 @@ import { SearchFilterService } from '../search-filter.service';
 export class SidebarFacetFilterComponent implements OnInit {
   @Input() filterValues: FacetValue[];
   @Input() filterConfig: SearchFilterConfig;
+  @Input() selectedValues: string[];
   currentPage: Observable<number>;
+  filter: string;
 
-  constructor(private filterService: SearchFilterService) {
+  constructor(private filterService: SearchFilterService, private router: Router) {
   }
 
   ngOnInit(): void {
@@ -38,8 +40,12 @@ export class SidebarFacetFilterComponent implements OnInit {
     return this.filterService.searchLink;
   }
 
-  getQueryParams(value: FacetValue): Observable<Params> {
-    return this.filterService.getFilterValueURL(this.filterConfig, value.value);
+  getQueryParamsWith(value: string): Observable<Params> {
+    return this.filterService.getQueryParamsWith(this.filterConfig, value);
+  }
+
+  getQueryParamsWithout(value: string): Observable<Params> {
+    return this.filterService.getQueryParamsWithout(this.filterConfig, value);
   }
 
   get facetCount(): Observable<number> {
@@ -60,6 +66,16 @@ export class SidebarFacetFilterComponent implements OnInit {
 
   getCurrentPage(): Observable<number> {
     return this.filterService.getPage(this.filterConfig.name);
+  }
 
+  onSubmit(data: any) {
+    if (isNotEmpty(data.filter)) {
+      this.getQueryParamsWith(data.filter).first().subscribe((a) => {
+          this.router.navigate([this.getSearchLink()], { queryParams: a }
+          );
+        }
+      );
+      this.filter = '';
+    }
   }
 }
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.component.html b/src/app/+search-page/search-filters/search-filter/search-filter.component.html
index c78ea9f676..f5acb42b6d 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.component.html
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.component.html
@@ -1,8 +1,8 @@
 <div>
-    <div (click)="toggle()" class="filter-name">{{filter.name}} <span class="fa float-right"
+    <div (click)="toggle()" class="filter-name"><h5 class="d-inline-block mb-0">{{'search.filters.filter.' + filter.name + '.head'| translate}}</h5> <span class="filter-toggle fa float-right"
                                                                       [ngClass]="(isCollapsed() | async) ? 'fa-plus' : 'fa-minus'"></span></div>
     <div [@slide]="(isCollapsed() | async) ? 'collapsed' : 'expanded'" class="search-filter-wrapper">
         <ds-search-facet-filter [filterConfig]="filter"
-                                [filterValues]="(filterValues | async)?.payload"></ds-search-facet-filter>
+                                [filterValues]="(filterValues | async)?.payload" [selectedValues]="getSelectedValues() | async"></ds-search-facet-filter>
     </div>
 </div>
\ No newline at end of file
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.component.scss b/src/app/+search-page/search-filters/search-filter/search-filter.component.scss
index 93be5d1c05..f694e9e167 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.component.scss
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.component.scss
@@ -1,6 +1,12 @@
 @import '../../../../styles/variables.scss';
 @import '../../../../styles/mixins.scss';
 
-.search-filter-wrapper {
-    overflow: hidden;
+:host {
+    border: 1px solid map-get($theme-colors, light);
+    .search-filter-wrapper {
+        overflow: hidden;
+    }
+    .filter-toggle {
+        line-height: $line-height-base;
+    }
 }
\ No newline at end of file
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.component.ts b/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
index 211315e397..e3f86c124c 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.component.ts
@@ -6,6 +6,7 @@ import { FacetValue } from '../../search-service/facet-value.model';
 import { SearchFilterService } from './search-filter.service';
 import { Observable } from 'rxjs/Observable';
 import { slide } from '../../../shared/animations/slide';
+import { RouteService } from '../../../shared/route.service';
 
 /**
  * This component renders a simple item page.
@@ -17,7 +18,7 @@ import { slide } from '../../../shared/animations/slide';
   selector: 'ds-search-filter',
   styleUrls: ['./search-filter.component.scss'],
   templateUrl: './search-filter.component.html',
-  animations: [slide]
+  animations: [slide],
 })
 
 export class SidebarFilterComponent implements OnInit {
@@ -51,4 +52,8 @@ export class SidebarFilterComponent implements OnInit {
   initialExpand() {
     this.filterService.initialExpand(this.filter.name);
   }
+
+  getSelectedValues(): Observable<string[]> {
+    return this.filterService.getSelectedValuesForFilter(this.filter);
+  }
 }
diff --git a/src/app/+search-page/search-filters/search-filter/search-filter.service.ts b/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
index 492eabdcf3..1a154e2808 100644
--- a/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
+++ b/src/app/+search-page/search-filters/search-filter/search-filter.service.ts
@@ -11,7 +11,6 @@ import {
   SearchFilterToggleAction
 } from './search-filter.actions';
 import { hasValue, } from '../../../shared/empty.util';
-import { Params } from '@angular/router';
 import { SearchFilterConfig } from '../../search-service/search-filter-config.model';
 import { SearchService } from '../../search-service/search.service';
 import { RouteService } from '../../../shared/route.service';
@@ -30,14 +29,16 @@ export class SearchFilterService {
     return this.routeService.hasQueryParamWithValue(paramName, filterValue);
   }
 
-  getFilterValueURL(filterConfig: SearchFilterConfig, value: string): Observable<Params> {
-    return this.isFilterActive(filterConfig.paramName, value).flatMap((isActive) => {
-      if (isActive) {
-        return this.routeService.removeQueryParameterValue(filterConfig.paramName, value);
-      } else {
-        return this.routeService.addQueryParameterValue(filterConfig.paramName, value);
-      }
-    })
+  getQueryParamsWithout(filterConfig: SearchFilterConfig, value: string) {
+    return this.routeService.removeQueryParameterValue(filterConfig.paramName, value);
+  }
+
+  getQueryParamsWith(filterConfig: SearchFilterConfig, value: string) {
+    return this.routeService.addQueryParameterValue(filterConfig.paramName, value);
+  }
+
+  getSelectedValuesForFilter(filterConfig: SearchFilterConfig): Observable<string[]> {
+    return this.routeService.getQueryParameterValues(filterConfig.paramName);
   }
 
   get searchLink() {
diff --git a/src/app/+search-page/search-filters/search-filters.component.html b/src/app/+search-page/search-filters/search-filters.component.html
index 9d08545923..5bd42928a1 100644
--- a/src/app/+search-page/search-filters/search-filters.component.html
+++ b/src/app/+search-page/search-filters/search-filters.component.html
@@ -1,7 +1,7 @@
 <h2>{{"search.filters.head" | translate}}</h2>
 <div *ngIf="(filters | async).hasSucceeded">
     <div *ngFor="let filter of (filters | async).payload">
-        <ds-search-filter [filter]="filter"></ds-search-filter>
+        <ds-search-filter class="d-block mb-3 p-3" [filter]="filter"></ds-search-filter>
     </div>
 </div>
 <a class="btn btn-primary" [routerLink]="[getSearchLink()]" [queryParams]="getClearFiltersQueryParams()" role="button">{{"search.filters.reset" | translate}}</a>
\ No newline at end of file
diff --git a/src/app/+search-page/search-filters/search-filters.component.ts b/src/app/+search-page/search-filters/search-filters.component.ts
index 8380df7e05..c06c35b372 100644
--- a/src/app/+search-page/search-filters/search-filters.component.ts
+++ b/src/app/+search-page/search-filters/search-filters.component.ts
@@ -1,4 +1,4 @@
-import { Component, Input } from '@angular/core';
+import { Component } from '@angular/core';
 import { SearchService } from '../search-service/search.service';
 import { RemoteData } from '../../core/data/remote-data';
 import { SearchFilterConfig } from '../search-service/search-filter-config.model';
diff --git a/src/app/+search-page/search-page.component.html b/src/app/+search-page/search-page.component.html
index fe08336579..e8f2fe5487 100644
--- a/src/app/+search-page/search-page.component.html
+++ b/src/app/+search-page/search-page.component.html
@@ -2,7 +2,7 @@
     <div class="search-page row">
         <ds-search-sidebar *ngIf="!(isMobileView | async)" class="col-3 sidebar-sm-sticky"
                            id="search-sidebar"
-                           resultCount="{{(resultsRDObs | async)?.pageInfo?.totalElements}}"></ds-search-sidebar>
+                           [resultCount]="(resultsRDObs | async)?.pageInfo?.totalElements"></ds-search-sidebar>
         <div class="col-12 col-sm-9">
             <ds-search-form id="search-form"
                             [query]="query"
@@ -16,7 +16,7 @@
                      [@pushInOut]="(isSidebarCollapsed() | async) ? 'collapsed' : 'expanded'">
                     <ds-search-sidebar *ngIf="(isMobileView | async)" class="col-12"
                                        id="search-sidebar-xs"
-                                       resultCount="{{(results | async)?.pageInfo.totalElements}}"
+                                       [resultCount]="(resultsRDObs | async)?.pageInfo?.totalElements"
                                        (toggleSidebar)="closeSidebar()"
                                        [ngClass]="{'active': !(isSidebarCollapsed() | async)}">
                     </ds-search-sidebar>
@@ -37,3 +37,4 @@
         </div>
     </div>
 </div>
+
diff --git a/src/app/+search-page/search-page.component.ts b/src/app/+search-page/search-page.component.ts
index 4a7d6322b9..1d3b80e4e7 100644
--- a/src/app/+search-page/search-page.component.ts
+++ b/src/app/+search-page/search-page.component.ts
@@ -90,7 +90,6 @@ export class SearchPageComponent implements OnInit, OnDestroy {
   }
 
   private updateSearchResults(searchOptions) {
-    // Resolve search results
     this.resultsRDObs = this.service.search(this.query, this.scope, searchOptions);
   }
 
diff --git a/src/app/+search-page/search-service/search-filter-config.model.ts b/src/app/+search-page/search-service/search-filter-config.model.ts
index 476dd8438e..fd3223c7bc 100644
--- a/src/app/+search-page/search-service/search-filter-config.model.ts
+++ b/src/app/+search-page/search-service/search-filter-config.model.ts
@@ -5,7 +5,7 @@ export class SearchFilterConfig {
   name: string;
   type: FilterType;
   hasFacets: boolean;
-  pageSize = 3;
+  pageSize = 2;
   isOpenByDefault: boolean;
   /**
    * Name of this configuration that can be used in a url
diff --git a/src/app/+search-page/search-service/search.service.ts b/src/app/+search-page/search-service/search.service.ts
index 2d34b3a98f..20b64b2528 100644
--- a/src/app/+search-page/search-service/search.service.ts
+++ b/src/app/+search-page/search-service/search.service.ts
@@ -15,6 +15,7 @@ import { FilterType } from './filter-type.model';
 import { FacetValue } from './facet-value.model';
 import { ViewMode } from '../../+search-page/search-options.model';
 import { Router, NavigationExtras, ActivatedRoute, Params } from '@angular/router';
+import { RouteService } from '../../shared/route.service';
 
 function shuffle(array: any[]) {
   let i = 0;
@@ -81,6 +82,7 @@ export class SearchService implements OnDestroy {
   ];
 
   constructor(private itemDataService: ItemDataService,
+              private routeService: RouteService,
               private route: ActivatedRoute,
               private router: Router) {
 
@@ -126,31 +128,31 @@ export class SearchService implements OnDestroy {
       .filter((rd: RemoteData<Item[]>) => rd.hasSucceeded)
       .map((rd: RemoteData<Item[]>) => {
 
-      const totalElements = rd.pageInfo.totalElements > 20 ? 20 : rd.pageInfo.totalElements;
-      const pageInfo = Object.assign({}, rd.pageInfo, { totalElements: totalElements });
+        const totalElements = rd.pageInfo.totalElements > 20 ? 20 : rd.pageInfo.totalElements;
+        const pageInfo = Object.assign({}, rd.pageInfo, { totalElements: totalElements });
 
-      const payload = shuffle(rd.payload)
-        .map((item: Item, index: number) => {
-          const mockResult: SearchResult<DSpaceObject> = new ItemSearchResult();
-          mockResult.dspaceObject = item;
-          const highlight = new Metadatum();
-          highlight.key = 'dc.description.abstract';
-          highlight.value = this.mockedHighlights[index % this.mockedHighlights.length];
-          mockResult.hitHighlights = new Array(highlight);
-          return mockResult;
-        });
+        const payload = shuffle(rd.payload)
+          .map((item: Item, index: number) => {
+            const mockResult: SearchResult<DSpaceObject> = new ItemSearchResult();
+            mockResult.dspaceObject = item;
+            const highlight = new Metadatum();
+            highlight.key = 'dc.description.abstract';
+            highlight.value = this.mockedHighlights[index % this.mockedHighlights.length];
+            mockResult.hitHighlights = new Array(highlight);
+            return mockResult;
+          });
 
-      return new RemoteData(
-        self,
-        rd.isRequestPending,
-        rd.isResponsePending,
-        rd.hasSucceeded,
-        errorMessage,
-        statusCode,
-        pageInfo,
-        payload
-      )
-    }).startWith(new RemoteData(
+        return new RemoteData(
+          self,
+          rd.isRequestPending,
+          rd.isResponsePending,
+          rd.hasSucceeded,
+          errorMessage,
+          statusCode,
+          pageInfo,
+          payload
+        )
+      }).startWith(new RemoteData(
         '',
         true,
         false,
@@ -182,39 +184,43 @@ export class SearchService implements OnDestroy {
   }
 
   getFacetValuesFor(searchFilterConfigName: string): Observable<RemoteData<FacetValue[]>> {
-
     const filterConfig = this.config.find((config: SearchFilterConfig) => config.name === searchFilterConfigName);
-    const values: FacetValue[] = [];
-    for (let i = 0; i < 5; i++) {
-      const value = searchFilterConfigName + ' ' + (i + 1);
-      values.push({
-        value: value,
-        count: Math.floor(Math.random() * 20) + 20 * (5 - i), // make sure first results have the highest (random) count
-        search: decodeURI(this.router.url) + (this.router.url.includes('?') ? '&' : '?') + filterConfig.paramName + '=' + value
-      });
-    }
-    const requestPending = false;
-    const responsePending = false;
-    const isSuccessful = true;
-    const errorMessage = undefined;
-    const statusCode = '200';
-    const returningPageInfo = new PageInfo();
-    return Observable.of(new RemoteData(
-      'https://dspace7.4science.it/dspace-spring-rest/api/search',
-      requestPending,
-      responsePending,
-      isSuccessful,
-      errorMessage,
-      statusCode,
-      returningPageInfo,
-      values
-    ));
+    return this.routeService.getQueryParameterValues(filterConfig.paramName).map((selectedValues: string[]) => {
+        const values: FacetValue[] = [];
+        for (let i = 0; i < 5; i++) {
+          const value = searchFilterConfigName + ' ' + (i + 1);
+          if (!selectedValues.includes(value)) {
+            values.push({
+              value: value,
+              count: Math.floor(Math.random() * 20) + 20 * (5 - i), // make sure first results have the highest (random) count
+              search: decodeURI(this.router.url) + (this.router.url.includes('?') ? '&' : '?') + filterConfig.paramName + '=' + value
+            });
+          }
+        }
+        const requestPending = false;
+        const responsePending = false;
+        const isSuccessful = true;
+        const errorMessage = undefined;
+        const statusCode = '200';
+        const returningPageInfo = new PageInfo();
+        return new RemoteData(
+          'https://dspace7.4science.it/dspace-spring-rest/api/search',
+          requestPending,
+          responsePending,
+          isSuccessful,
+          errorMessage,
+          statusCode,
+          returningPageInfo,
+          values
+        )
+      }
+    )
   }
 
   getViewMode(): Observable<ViewMode> {
-    return this.route.queryParams.map((params) => {
-      if (isNotEmpty(params.view) && hasValue(params.view)) {
-        return params.view;
+    return this.routeService.getQueryParameterValue('view').map((value) => {
+      if (hasValue(value)) {
+        return value as ViewMode;
       } else {
         return ViewMode.List;
       }
diff --git a/src/app/+search-page/search-sidebar/search-sidebar.component.scss b/src/app/+search-page/search-sidebar/search-sidebar.component.scss
index c8c0a60225..2b318454ed 100644
--- a/src/app/+search-page/search-sidebar/search-sidebar.component.scss
+++ b/src/app/+search-page/search-sidebar/search-sidebar.component.scss
@@ -5,4 +5,7 @@
     .results {
         line-height: $button-height;
     }
+    ds-view-mode-switch {
+        margin-bottom: $spacer;
+    }
 }
diff --git a/src/app/core/core.module.ts b/src/app/core/core.module.ts
index bfd5cebcb6..39570f9aed 100644
--- a/src/app/core/core.module.ts
+++ b/src/app/core/core.module.ts
@@ -32,6 +32,7 @@ import { ServerResponseService } from '../shared/server-response.service';
 import { NativeWindowFactory, NativeWindowService } from '../shared/window.service';
 import { BrowseService } from './browse/browse.service';
 import { BrowseResponseParsingService } from './data/browse-response-parsing.service';
+import { RouteService } from '../shared/route.service';
 
 const IMPORTS = [
   CommonModule,
@@ -65,6 +66,7 @@ const PROVIDERS = [
   ServerResponseService,
   BrowseResponseParsingService,
   BrowseService,
+  RouteService,
   { provide: NativeWindowService, useFactory: NativeWindowFactory }
 ];
 
diff --git a/src/app/shared/animations/slide.ts b/src/app/shared/animations/slide.ts
index 381f592168..fa4a451863 100644
--- a/src/app/shared/animations/slide.ts
+++ b/src/app/shared/animations/slide.ts
@@ -1,4 +1,4 @@
-import { animate, state, transition, trigger, style } from '@angular/animations';
+import { animate, state, transition, trigger, style, stagger, query } from '@angular/animations';
 
 export const slide = trigger('slide', [
 
@@ -6,5 +6,5 @@ export const slide = trigger('slide', [
 
   state('collapsed', style({ height: 0 })),
 
-  transition('expanded <=> collapsed', animate(250)),
+  transition('expanded <=> collapsed', animate(250))
 ]);
diff --git a/src/app/shared/route.service.ts b/src/app/shared/route.service.ts
index 5a34e40779..b11da41211 100644
--- a/src/app/shared/route.service.ts
+++ b/src/app/shared/route.service.ts
@@ -1,4 +1,4 @@
-import { Injectable, OnDestroy } from '@angular/core';
+import { Injectable } from '@angular/core';
 import { Observable } from 'rxjs/Observable';
 import { ActivatedRoute, convertToParamMap, Params, } from '@angular/router';
 import { isNotEmpty } from './empty.util';
@@ -9,6 +9,14 @@ export class RouteService {
   constructor(private route: ActivatedRoute) {
   }
 
+  getQueryParameterValues(paramName: string): Observable<string[]> {
+    return this.route.queryParamMap.map((map) => map.getAll(paramName));
+  }
+
+  getQueryParameterValue(paramName: string): Observable<string> {
+    return this.route.queryParamMap.map((map) => map.get(paramName));
+  }
+
   hasQueryParam(paramName: string): Observable<boolean> {
     return this.route.queryParamMap.map((map) => {return map.has(paramName);});
   }