Angular 2- what is the best way to set multiple components in one path without losing data using TypeScript - 


export const routes: routes  = [ {path: '', redirectto: 'login', pathmatch: 'full'}, { path: 'login',component: logincomponent },  {path: 'main', component: maincomponent ,},  { path: 'dashboard',component: dashboardcomponent,     children: [         {             path: ':id',             children: [                 { path: '',redirectto: 'registration', pathmatch: 'full'},                 {                     path: 'registration',                     component: registrationcomponent,                 },                 {                     path: 'contact',                     component: contactcomponent                 },             ]         }     ] },];

how maintain input fields data in contact , registration component. multiple child views data lost on moving 1 child component child.

dashboard component 1:

@component({ selector: 'registration', template: `<input type="text" required>`,})  export class registrationcomponent{ constructor(public router: router) {}}

dashboard component 2:

@component({ selector: 'contact', template: `<input type="text" required>`,})  export class contactcomponent{ constructor(public router: router) {}} 
 <div>    <a class="registratin"  [routerlink]="[':/registaration']" routerlinkactive="active">                  </a>    <a class="contact"  [routerlink]="[':/contact']">                  </a>    </div> <div  class="outer-outlet">       <router-outlet></router-outlet>     </div>

when route registrationcomponent contactcomponent, angular destroys current component i.e. registrationcomponent , loads new contactcomponent. why lose input data in registration template.

there different ways tackle this:

1.use structural directives or [hidden]
routing should ideally used if components differ entirely in context. instead out routing, use ngif hide/show components. .. 

<registration [hidden]="id!=1"></registration> <contact [hidden]="id!=2"></contact>

2.use service(s) communicate data
a. inject service providers , set/get data to/from service
b. use resolve guard prefetch data before navigating

if want dig deeper, go through angular 2 offical routing example implements different routing behaviours.


Comments

Post a Comment

Popular posts from this blog

asynchronous - C# WinSCP .NET assembly: How to upload multiple files asynchronously -

i using winscp .net assembly uploading files. want upload multiple files asynchronous way. have created method works single upload. public class uploadingdata { private sessionoptions _sessionoptions; private session _session; //connection etc private void onconnected() { foreach (var fileinfo in localfileslist) { var task = task.factory.startnew(() => uploadfilesasync(fileinfo)); } } private async task uploadfilesasync(string file) { string remotefilepath = _session.translatelocalpathtoremote(file, @"/", "/test_data_upload"); var uploading = _session.putfiles(file, remotefilepath, false); //when done await task.run(() => thread.sleep(1000)); } } please suggest me correct way. thanks you can use backgroundworker class this: string[] images = new string[50]; foreach (var path in images) { backgroundworker
Read more

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more