angular - Angular2, RouteParams not working -

-

i'm getting error causing lots of frustration. here's running with:

  • asp.net core 1.0 rc1
  • angular2, 2.0.0-beta.15
  • typescript, 1.7.6.0

the error(s):

angular 2 running in development mode. call enableprodmode() enable production mode. attempting redirect to: /design/0deac46a-7f58-49f9-b67e-2c187dfa49a7/ navigated http://localhost:5000/ exception: cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. exception: cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. exception: error: uncaught (in promise): cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. exception: error: uncaught (in promise): cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. stacktrace: error: uncaught (in promise): cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable.     @ resolvepromise (angular2-polyfills.js:602)     @ angular2-polyfills.js:638     @ zonedelegate.invoketask (angular2-polyfills.js:423)     @ object.ngzoneimpl.inner.inner.fork.oninvoketask (angular2.js:2118)     @ zonedelegate.invoketask (angular2-polyfills.js:422)     @ zone.runtask (angular2-polyfills.js:320)     @ drainmicrotaskqueue (angular2-polyfills.js:541)     @ xmlhttprequest.zonetask.invoke (angular2-polyfills.js:493) unhandled promise rejection: cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. ; zone: angular ; task: promise.then ; value: noannotationerror {message: "cannot resolve parameters 'routeparams'(?)… 'routeparams' decorated injectable.", stack: "error: cannot resolve parameters 'routepar…//localhost:5000/js/angular2/angular2.js:9448:46)"} error: uncaught (in promise): cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable.(…) unhandled promise rejection: cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable. ; zone: <root> ; task: promise.then ; value: noannotationerror {message: "cannot resolve parameters 'routeparams'(?)… 'routeparams' decorated injectable.", stack: "error: cannot resolve parameters 'routepar…//localhost:5000/js/angular2/angular2.js:9448:46)"} error: uncaught (in promise): cannot resolve parameters 'routeparams'(?). make sure parameters decorated inject or have valid type annotations , 'routeparams' decorated injectable.(…)

i have abstract base class has 2 subclasses, acting angular2 components. each have constructor takes routeparams instance. subclass 1 works fine, subclass 2 fails load error message above.

the routedefinition asyncroute defined path so: path: '/:appid/:customerid/'

here screen capture error thrown in angular when attempts reflect on routeparams.

enter image description here

base class:

import {component, oninit} "angular2/core"; import {routeparams, location} "angular2/router"; import {customerservice} "../../shared/services/customer.service";  @component({     providers: [customerservice] })  export abstract class basecustomerselectorcomponent implements oninit {     protected params: routeparams;      constructor(private customerservice: customerservice,                 private routeparams: routeparams,                 private nglocation: location) {         this.params = routeparams;     }      ngoninit() {         // omitted..     } }

subclass two:

import {component} "angular2/core"; import {routeparams, location} "angular2/router"; import {basecustomerselectorcomponent} "../../shared/components/base-customer-selector.component"; import {customerservice} "../../shared/services/customer.service";  @component({     selector: "customer-selector",     templateurl: "app/shell/templates/customer-selector.html",     styleurls: ["app/shell/styles/customer-selector.css"],     providers: [customerservice, settings, routeparams] })  export class customerselectorcomponent extends basecustomerselectorcomponent {     constructor(customerservice: customerservice,                 routeparams: routeparams,                 nglocation: location) {         super(customerservice, routeparams, nglocation);     } }

routeparams can injected in components added router.

in other components can inject router , subscribe it`

  constructor(private router:router) {     router.subscribe(route => {       console.debug(this.router.currentinstruction.component.params);     });   }

otherwise @kemsky said.

ensure router_providers added on root component (or alternatively in bootstrap())


Comments

Post a Comment

Popular posts from this blog

ios - Memory not freeing up after popping viewcontroller using ARC -

-
hi project arc based, using uinavigationcontroller make transition between viewcontroller. using profiler analyse happening behind scene memory. noticed when push viewcontroller allocate memory components , when pop not freeing allocated memory. since using arc unable implement dealloc or release component. have analysed in detail , there no memory leak in project. i not using strong property push viewcontroller. here how pushing viewcontroller. viewcontroller *obj = [[viewcontroller alloc] init]; [self.navigationcontroller pushviewcontroller:obj animated:no]; any clue whats going on? should free memory have consumed. please advise your description indicates have retain cycle, leads objects not being deallocated. typical source of retain cycles properties assigned loading nib files (usually declared iboutlet ). two strategies break them , release objects: declare property weak : @property (nonatomic, weak) iboutlet uilabel *statuslabel; set property nil in...
Read more

Django REST Framework perform_create: You cannot call `.save()` after accessing `serializer.data` -

-
i have following viewset: class artistprofileviewset(viewsets.modelviewset): queryset = artistprofile.objects.all() serializer_class = artistprofileserializer def perform_create(self, serializer): if serializer.is_valid(): serializer.save() with following serializers: class simpleartisttrackserializer(serializers.hyperlinkedmodelserializer): class meta: model = artisttrack fields = (...my fields...) class artistprofileserializer(serializers.hyperlinkedmodelserializer): owners = userserializer(many=true, required=false) tracks = simpleartisttrackserializer(many=true, required=false) class meta: model = artistprofile fields = (...my fields...) i getting following error: assertionerror: cannot call `.save()` after accessing `serializer.data`.if need access data before committing database inspect 'serializer.validated_data' instead. i don't see editing serializer.data object. th...
Read more

Why does Go error when trying to marshal this JSON? -

-
i'm trying rather simple example of trying decode json file structs using golang. however, when attempting error that json: cannot unmarshal object go value of type []main.track which don't understand. here's code in question, , json can found here . package main import ( "encoding/json" "fmt" "net/http" "os" ) // tracks group of track types type tracks struct { tracks []track } // track represents singular track type track struct { name string url string artist artist } // artist represents single artist type artist struct { name string mbid string url string } func main() { url := "http://ws.audioscrobbler.com/2.0/?method=geo.gettoptracks&api_key=c1572082105bd40d247836b5c1819623&format=json&country=netherlands" response, err := http.get(url) if err != nil { fmt.printf("%s\n", err) os.exit(1) } de...
Read more