Routing in Application

Navigation and Routing in a glance

Navigation is one of the most important functionality in any application & UI5 isn’t any exception either. There are a number of ways to implement navigation in SAPUI5 for e.g. Shell, EventBus, and Routing. Router which is a sub-class of sap.ui routing library is the recommended way to implement navigation. In this article, you will learn how to use SAP UX Shell that uses navigation with Router instead of using Shell capabilities so replace content at runtime. In this article – SAPUI5 Navigation with Router, you will learn to implement routing in SAPUI5 application, set custom URLs for views or pages, and understand the recommended way of navigation in SAPUI5.

One of the major advantages of using router is its capability of enabling custom URL for each view or page in UI5 application. That means, you can access UI5 application with custom URL and share URL to any view or page form the application. That said, another user does not have to run the application from scratch. With UI5 router, dynamic URLs offer significant improvement in user experience.

SAPUI5 Router Project Structure

In this article : SAPUI5: Navigation with Routing, we will use create two views and perform navigation between these views with router. We will define & register router in index HTML for the sake of simplicity. However, it is recommended to define router in a controller.

Step 1: Create SAPUI5 application project with initial view name as – View1, and name the project as “routerdemo”

Step 2: Create a new view in the “routerdemo” project, and name the view as – View2

Create Content for both Views

We will complete easy part first. Use following piece of code to create content for both views. We do not have to create any flashy UI in these views. We will simply create text view and add static content.

Copy and paste following code in View 1.view.js file. Place the code inside “createContent” function.

var oText = new sap.ui.commons.TextView({

           text: "This is View1"
       })

       return oText;

Similarly, copy and paste following code in View2.view.js file. Place the code inside “createContent” function.

var oText = new sap.ui.commons.TextView({

           text: "This is View2"
       })

       return oText;

Create UX Shell, and Router in Index HTML

For UX Shell to function properly “sap.ui.ux3” library is required. Add a reference to this library in data-sap-ui-libs.

Define Shell

Shell is a container that hosts a number of views together. However, all view rendering is mutually exclusive and one view is not aware if another view exists. In sum, Shell only knows which view to load and thus, Shell cannot provide custom URLs for each view or page it that shell holds.

var oShell = sap.ui.ux3.Shell("shellId",{
                   appTitle: "routerdemo",
                   showLogoutButton: false,
                   showSearchTool: false,
                   worksetItems: [
                                new sap.ui.ux3.NavigationItem("View1Id",{
                                   key: "View1",
                                   text: "View1"
                                }),
                                new
sap.ui.ux3.NavigationItem("View2Id", {
                                   key: "View2",
                                   text: "View2"
                                })
                   ]}

Above piece of code declares a shell and defines navigation items inside shell. We have added both View1 and View2 as navigation items inside shell. Remember; always assign ID for each navigation item so that router can know which view to load when router is triggered. “View1Id” and “View2Id” are both IDs for navigation items.

Define Initial Content of Shell

content: [new sap.ui.view({
                       id: "view1Id",
                       viewName: "routerdemo.View1",
                       type: sap.ui.core.mvc.ViewType.JS
                   })]

Above piece of code add default content that shell should load. Here we have declared that navigation item view1Id should be initial content. However, you can choose not to define initial content as router is taking care of the default content. So you can opt to skip this step and routing will still work without any problem.

Place Shell on the Page

Now, simply place the shell at “container” DIV of the index HTML

oShell.placeAt('container');

Define Router

Pattern: [“<url pattern>”, “<view or page id>”]
Name: Tells router which view to load when given URL pattern is found in the URL
View: Provide View or Page ID
View Type: Mention what view type is for the view to be loaded
targetControl: Specify shell ID which is the user control point or user interaction point
targetAggregation: Content to be loaded when router navigates to another view
clearTarget: Clears target when navigation triggers
callback: Defines a function that places view defined in the router properties and sets that in the selected work item of the shell

Define HashChanger

Hash Changer is a library that sets custom URL based on the patter property of the router and enables application to be accessed by custom URL instead of running application from the start. The advantage is you can pass on the custom URL to someone who wants to see only specific page in the application. With hash changer, router can recognize the URL pattern and loads specific page when another user runs the application with custom URL.

Copy and paste below code to define hash changer.

worksetItemSelected: function(e) {
                       this.removeAllContent();

                       var selected = e.getParameter("key");

                       var oHashChanger = new sap.ui.core.routing.HashChanger();
                       oHashChanger.setHash(router.getURL(selected));

                   }

Register & Initialize Router

                                router.register("routerID");

                                                       router.initialize();

In the end, router must be registered so that it can be referred with router ID globally. Also, initialize the router so that it can be used in the current application.

Note: A reference to hash changer library is required. Copy and paste following code immediately before you define Shell Element in Index HTML.

                jQuery.sap.require("sap.ui.core.routing.Router");

                               jQuery.sap.require("sap.ui.core.routing.HashChanger");

We need reference to routing & HashChanger both.

Example of the whole Application

Index HTML
<!DOCTYPE HTML>
<html>
   <head>
       <meta http-equiv="X-UA-Compatible" content="IE=edge">
       <meta http-equiv='Content-Type' content='text/html;charset=UTF-8'/>


       <script src="resources/sap-ui-core.js"
               id="sap-ui-bootstrap"
               data-sap-ui-libs="sap.ui.commons,sap.ui.ux3"
               data-sap-ui-theme="sap_bluecrystal">
       </script>
       

       <script>
               sap.ui.localResources("routerdemo");

               jQuery.sap.require("sap.ui.core.routing.Router");
               jQuery.sap.require("sap.ui.core.routing.HashChanger");

               var oShell = sap.ui.ux3.Shell("shellId",{
                   appTitle: "routerdemo",
                   showLogoutButton: false,
                   showSearchTool: false,
                   worksetItems: [
                                new sap.ui.ux3.NavigationItem("View1Id",{
                                   key: "View1",
                                   text: "View1"
                                }),
                                new sap.ui.ux3.NavigationItem("View2Id", {
                                   key: "View2",
                                   text: "View2"
                                })
                   ],
                   worksetItemSelected: function(e) {
                       this.removeAllContent();

                       var selected = e.getParameter("key");

                       var oHashChanger = new sap.ui.core.routing.HashChanger();
                       oHashChanger.setHash(router.getURL(selected));

                   },
                   content: [new sap.ui.view({
                       id: "view1Id",
                       viewName: "routerdemo.View1",
                       type: sap.ui.core.mvc.ViewType.JS
                   })]

               });

               oShell.placeAt('container');

               var router = new sap.ui.core.routing.Router([
                   {
                       pattern: "",
                       name: "View1",
                       view: "routerdemo.View1",
                       viewType: sap.ui.core.mvc.ViewType.JS,
                       targetControl: "shellId",
                       targetAggregation: "content", //content/Page
                       clearTarget: true,
                       callback: function() {
                           oShell.setSelectedWorksetItem("View1Id");
                       }
                   },
                   {
                       pattern: ["custom", "View2"],
                       name: "View2",
                       view: "routerdemo.View2",
                       viewType: sap.ui.core.mvc.ViewType.JS,
                       targetControl: "shellId",
                       targetAggregation: "content", //content/Page
                       clearTarget: true,
                       callback: function() {
                           oShell.setSelectedWorksetItem("View2Id");
                       }
                   }


               ]);

               router.register("routerId");
               router.initialize();

       </script>

   </head>
   <body class="sapUiBody" role="application">
       <div id="container"></div>
   </body>
</html>Working Application
On application initial load

On Navigation to View 2

Now, you can pass the URL with #/custom and application will directly load View 2 instead of loading view1 initially.
Index HTML

<!DOCTYPE HTML>
<html>
   <head>
       <meta http-equiv="X-UA-Compatible" content="IE=edge">
       <meta http-equiv='Content-Type' content='text/html;charset=UTF-8'/>


       <script src="resources/sap-ui-core.js"
               id="sap-ui-bootstrap"
               data-sap-ui-libs="sap.ui.commons,sap.ui.ux3"
               data-sap-ui-theme="sap_bluecrystal">
       </script>
       

       <script>
               sap.ui.localResources("routerdemo");

               jQuery.sap.require("sap.ui.core.routing.Router");
               jQuery.sap.require("sap.ui.core.routing.HashChanger");

               var oShell = sap.ui.ux3.Shell("shellId",{
                   appTitle: "routerdemo",
                   showLogoutButton: false,
                   showSearchTool: false,
                   worksetItems: [
                                new sap.ui.ux3.NavigationItem("View1Id",{
                                   key: "View1",
                                   text: "View1"
                                }),
                                new sap.ui.ux3.NavigationItem("View2Id", {
                                   key: "View2",
                                   text: "View2"
                                })
                   ],
                   worksetItemSelected: function(e) {
                       this.removeAllContent();

                       var selected = e.getParameter("key");

                       var oHashChanger = new sap.ui.core.routing.HashChanger();
                       oHashChanger.setHash(router.getURL(selected));

                   },
                   content: [new sap.ui.view({
                       id: "view1Id",
                       viewName: "routerdemo.View1",
                       type: sap.ui.core.mvc.ViewType.JS
                   })]

               });

               oShell.placeAt('container');

               var router = new sap.ui.core.routing.Router([
                   {
                       pattern: "",
                       name: "View1",
                       view: "routerdemo.View1",
                       viewType: sap.ui.core.mvc.ViewType.JS,
                       targetControl: "shellId",
                       targetAggregation: "content", //content/Page
                       clearTarget: true,
                       callback: function() {
                           oShell.setSelectedWorksetItem("View1Id");
                       }
                   },
                   {
                       pattern: ["custom", "View2"],
                       name: "View2",
                       view: "routerdemo.View2",
                       viewType: sap.ui.core.mvc.ViewType.JS,
                       targetControl: "shellId",
                       targetAggregation: "content", //content/Page
                       clearTarget: true,
                       callback: function() {
                           oShell.setSelectedWorksetItem("View2Id");
                       }
                   }


               ]);

               router.register("routerId");
               router.initialize();

       </script>

   </head>
   <body class="sapUiBody" role="application">
       <div id="container"></div>
   </body>
</html>Working Application
On application initial load

On Navigation to View 2

Now, you can pass the URL with #/custom and application will directly load View 2 instead of loading view1 initially.

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4 comments

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admin

30 April 2017 at 02:30 ×

Hello Thomas,

I hate to disturb you over small stuffs like this.

Is just that I have been learning SAP UI5 for some time now.

I decided to have a different perspective with your tutorials because you brought in the Component.JS and Manifest.Json concepts which are SAP's standard.

But am having a little issue again. I can't Bind data from controllers to Views.

Naturally I should instantiate the Data in the Init functions in the controller and Bind it to the view and it works, but now I guess I have to do some other set up in Manifest.json and Component.js for the data to be binded. and I dont have an idea on how to do that.

Please see Code below.

Anonymous

15 February 2018 at 04:46 ×

Hi Sanjo,

I have started with SAPUI5 recently, and have been following your tutorial videos. I was following everthing until now, however I have been struggling with Routing between javascript views. I am able to route between XML views, and from XML view to JS view, however I am not able to navigate from JS view to JS view. The first view is loaded, but when routing to the second view, the message on console is "Uncaught TypeError: Cannot read property 'navTo' of undefined".
Please help me out of this.

The code snippets are:
Component.JS
sap.ui.define([
"sap/ui/core/UIComponent",
"sap/ui/Device",
"sapui5/app53/model/models"
], function(UIComponent, Device, models) {
"use strict";
return UIComponent.extend("sapui5.app53.Component", {
metadata: {
manifest: "json"
},

init: function() {
UIComponent.prototype.init.apply(this, arguments);
this.setModel(models.createDeviceModel(), "device");
this.getRouter().initialize();
}
});
});

Routing part within manifest.json
"routing": {
"config": {
"viewType": "JS",
"viewPath": "sapui5.app53.view",
"targetControl":"idPageContainer",
"targetAggregation": "pages",
"routerClass": "sap.m.routing.Router"
},
"routes": [{
"pattern": "",
"name": "First",
"view": "zjs_view_53_02",
"targetAggregation": "pages"
},
{
"pattern": "second",
"name": "Second",
"view": "zjs_view_53_03",
"targetAggregation": "pages"
}]
}

Container view:
sap.ui.jsview("sapui5.app53.view.zjs_view_53_01", {

getControllerName : function() {
return "sapui5.app53.controller.zjs_view_53_01";
},

createContent : function(oController) {
this.setDisplayBlock(true);
return sap.m.App("idPageContainer");
}

});

First View
sap.ui.jsview("sapui5.app53.view.zjs_view_53_02", {
getControllerName : function() {
return "sapui5.app53.controller.zjs_view_53_02";
},

createContent : function(oController) {

var oButton = new sap.m.Button({
id : "idButton1", // sap.ui.core.ID
text : "Go to Next View", // string
press : [ oController.onNextView ]
});
return new sap.m.Page({
title: "Title Page 2",
content: [
oButton
]
});
}
});

Controller for First View
sap.ui.controller("sapui5.app53.controller.zjs_view_53_02", {

onNextView: function() {
var router;
router = sap.ui.core.UIComponent.getRouterFor(this);
return router.navTo("Second", null);

},
}

netwrkTerrorist

15 February 2018 at 18:50 ×

You must define the scope for the button, update the "press" property with [ oController.onNextView, oController ], sample below:

var oButton = new sap.m.Button({
id : "idButton1", // sap.ui.core.ID
text : "Go to Next View", // string
press : [ oController.onNextView, oController ]
});

10 September 2019 at 05:32 ×

This doesn't work.

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