I'm wondering if it is possible to access variable / method of a template in iron:router.
My problem is : I want to reset a lot of stuff launched by my template (timer / subscription / whatever) on the page unload (from a change page menu)
But the window.onBeforeUnload is only triggered when we are changing the url. But my Iron:router is not reffreshing page and the only way i found to get this unload event is passing by iron:router's unload event. But there, I just can't access to my template variable or method. So the only way i found at the moment is passing my reset var by session... And i find this very awful !
Router.route('/printList', {
name: 'printjoblistList',
unload: function () {
var reset = Session.get("sessionTestIronRouter");
}
Have you got advice, tips and bests ways to do that ? :)
Ok, solved this, not very clean though.
I declared a globalHelper in my template client size :
Template.registerHelper('functionToCall', function () {
// Code here
});
and in my unload iron's route :
Router.route('/template', {
name: 'myTemplate',
unload: function (e, obj) {
Blaze._globalHelpers.functionToCall();
}
});
Related
I have 3 components Map, Field & Section. Map is the parent component. Field & Section are child components.
There is an action called testField in Field component. Inside the test function first I want to trigger an event SaveSection on Section component and then continue other stuff.
// In field component
public function testField(): void
{
// Save section
$this->emitTo('section', 'saveSection');
Log::debug('Testing.....');
}
// In section component
public function saveSection()
{
Log::debug('saveSection+++++');
$this->emitTo('map', 'storeSection', $this->section, $this->sectionIndex);
}
// In map component
public function storeSection(array $section, int $sectionIndex)
{
Log::debug('storeSection-----');
// Store to DB
....
}
But it prints Testing..... before storeSection-----. Is there way I can wait for events to finish before continue.
Hi based on our conversation, I think you would want to go with hooking into Livewire and listening for message processed events.
The first step would be to wrap Log::debug('Testing.....'); in a function like this. The original idea came from #Prospero Livewire show loader when an event is emitted
public function testLog()
{
Log::debug('Testing.....');
}
You might want to tweak this to your satisfaction as this is just a recommendation.
Now you need to prepare your application to stack scripts in the base view right before the closing body tag. eg in app.blade.php like this
<body>
...//Whatever thats before it
#stack('scripts')
</body>
This would help you stack the custom script tag you would define in the component view.
After this you now use the Livewire hook. Do this properly to avoid DOM diffing issues as Livewire would cry tears in your developer console:
<script>
document.addEventListener('livewire:load', function () {
Livewire.hook("message.processed", (message, component) => {
if (message.updateQueue[0].payload.event === "storeSection") {
// I have not implemented it this way so try any of them
//#this is a brilliant decorator that finds the component
#this.emit('testLog') or #this.call('testLog')
}
});
})
</script>
This would show Testing....`` after storeSection``` is processed.
Please do let me know if this does not work as I might have to implement changes.
I open modal using
document.getElementById('openLoginFormBTN').addEventListener('click', function (event) {
let loginFormModal= new bootstrap.Modal(document.getElementById('loginModal'));
loginFormModal.show();
});
and it works fine, but when I want to close it in function
...
console.log("user logged in")
let loginFormModal= new bootstrap.Modal(document.getElementById('loginModal'));
loginFormModal.hide();
...
It doesn't want to close.
I believe you can rely on the getOrCreateInstance method.
No need to retreive the modal again once you have the instance.
const btnShow = document.getElementById('openLoginFormBTN');
const modalEl = document.getElementById('loginModal');
const loginFormModal = bootstrap.Modal.getOrCreateInstance(modalEl);
btnShow.addEventListener('click', function (event) {
loginFormModal.show();
});
loginFormModal.hide();
I created a DEMO where you can play around with this.
Not sure if I've hit the mark on your use case. Please elaborate in case I missed something.
export class ProjectDetail {
page: string;
}
the page info contained in json, like this:
{
"data":[
{
page: "PageInfoPage"
},
{
page: "PageInfoPage1"
}
]
}
I parse info from this json,then saved in Array.
when execute this.nav.push(pd.page),throw exception as title described.I don't know how to convert 'string' to 'component'.
============================================================
I use the method like Angular 2 - Resolve Component Factory with a string described. This is my code:
itemClick(pd: ProjectDetail) {
var factories = Array.from(this.resolver['_factories'].keys());
var factoryClass = <Type<any>>factories.find((x: any) => x.name === pd.page);
const factory = this.resolver.resolveComponentFactory(factoryClass);
const compRef = this.vcRef.createComponent(factory);
if (this.componentRef) {
this.componentRef.destroy();
}
this.componentRef = compRef;
this.nav.push(compRef, {
item: pd,
pid: this.project.pid
});
}
it still does not work.Thank you for your answer.
At last,I solved it with a stupid method.As I create a map like this:
componentRegistry = {
'ProjectInfoPage': ProjectInfoPage
};
And then push like this:
this.nav.push(this.componentRegistry[pd.page], {
item: pd,
pid: this.project.pid
});
Normally, you have to import the actual component class for the page that you want to navigate to and then push that class onto the stack. By default, there is no way built into ionic2 to navigate via string references. I had the same problem today where I wanted to be able to navigate using strings rather than pushing the component class on the stack.
Check out the following link from the ionic forums on how to accomplish this. Look at the last two responses to the thread, which include how to solve this problem from beta stages and then an updated answer for how to do so with ionic 2.2.0. Although I'm pretty sure the same solution will work for all versions of ionic 2 since final release.
https://forum.ionicframework.com/t/ionic2-navigation-circular-depencies/41123/5
I am new to Ionic2, and I am trying to build dynamic tabs based on current menu selection. I am just wondering how can I get current page using navigation controller.
...
export class TabsPage {
constructor(navParams: NavParams,navCtrl:NavController) {
//here I want to get current page
}
}
...
From api documentation I feel getActiveChildNav() or getActive() will give me the current page, but I have no knowledge on ViewController/Nav.
Any help will be appreciated. Thanks in advance.
Full example:
import { NavController } from 'ionic-angular';
export class Page {
constructor(public navCtrl:NavController) {
}
(...)
getActivePage(): string {
return this.navCtrl.getActive().name;
}
}
Method to get current page name:
this.navCtrl.getActive().name
More details here
OMG! This Really Helped mate, Tons of Thanks! #Deivide
I have been stuck for 1 Month, Your answer saved me. :)
Thanks!
if(navCtrl.getActive().component === DashboardPage){
this.showAlert();
}
else
{
this.navCtrl.pop();
}
My team had to build a separate custom shared menu bar, that would be shared and displayed with most pages. From inside of this menu component.ts calling this.navCtrl.getActive().name returns the previous page name. We were able to get the current page name in this case using:
ngAfterViewInit() {
let currentPage = this.app.getActiveNav().getViews()[0].name;
console.log('current page is: ', currentPage);
}
this.navCtrl.getActive().name != TheComponent.name
or
this.navCtrl.getActive().component !== TheComponent
is also possible
navCtrl.getActive() seems to be buggy in certain circumstances, because it returns the wrong ViewController if .setRoot was just used or if .pop was just used, whereas navCtrl.getActive() seems to return the correct ViewController if .push was used.
Use the viewController emitted by the viewDidEnter Observable instead of using navCtrl.getActive() to get the correct active ViewController, like so:
navCtrl.viewDidEnter.subscribe(item=> {
const viewController = item as ViewController;
const n = viewController.name;
console.log('active page: ' + n);
});
I have tested this inside the viewDidEnter subscription, don't know about other lifecycle events ..
Old post. But this is how I get current page name both in dev and prod
this.appCtrl.getActiveNav().getActive().id
Instead of
...
...
//In debug mode alert value is 'HomePage'
//In production/ signed apk alert value is 'n'
alert(activeView.component.name);
if (activeView.component.name === 'HomePage') {
...
...
Use this
...
...
//In debug mode alert value is 'HomePage'
//In production/ signed apk alert value is 'HomePage'
alert(activeView.id);
if (activeView.id === 'HomePage') {
...
...
Source Link
You can use getActive to get active ViewController. The ViewController has component and its the instance of current view. The issue is the comparsion method. I've came up to solution with settings some field like id:string for all my Page components and then compare them. Unfortunately simple checking function name so getActive().component.name will break after minification.
I've seen a lot of topics about this, but unfortunately I believe that each case is a different case (or most of them), and I really would love some experts opinion about my case in particular since I cannot make my code work even after reading through some of the other topics.
Situation: I am using an Ajax Request call in jQuery to a WebService method I have created in an WebApi project together with a MVC 4 Application.
My WebService controller class looks like the default, like this:
public class AdditionalInfoController : ApiController
{
//GET api/AdditionalInfo
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
//GET api/AdditionalInfo/5
public string Get(int id)
{
return "value";
}
//PUT api/AdditionalInfo/5
public void Put(int id)
{
string test = "";
}
}
My Ajax Request from jQuery looks like this:
function GetAdditionalInfo(obj)
{
var request = jQuery.ajax({
url: "/api/AdditionalInfo/Get",
type: "GET",
data: { id: obj.id },
datatype: "json",
async: false,
beforeSend: function () {
},
complete: function () {
}
})
.done(function (a,b,c) {
alert("Additional info was retrieved successfully!");
})
.fail(function (a,b,c) {
alert("An error happened while trying to get the additional info!");
});
}
My WebAPIConfig file looks like this:
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
And last but not least, this is my problem: this error message keeps appearing when I browse the returned data variable in .fail and this is what is written:
"{
"Message":"No HTTP resource was found that matches the request URI 'http://localhost:59096/api/AdditionalInfo/Get?id=1'.",
"MessageDetail":"No type was found that matches the controller named 'AdditionalInfo'."
}"
I would really appreciate it if someone could help me as soon as possible. Thanks in advance!
Best regards,
Mad
Looking at the error looks like Web API is unable to find the controller 'type' AdditionalInfo. Web API uses assemblies resolver to scan through the assemblies and finds out the controller types. In your case for some reason its unable to find your 'AdditionalInfo' controller probably because it has some problem loading the assembly having this controller.
Try the following and see if there are any errors logged in your EventLog. If you notice any errors then probably you should check if your controllers are present in those assemblies.
Make the following change in Web.config to view errors in EventLog
<system.diagnostics>
<trace autoflush="false" indentsize="4">
<listeners>
<add name="myListener"
type="System.Diagnostics.EventLogTraceListener"
initializeData="WebApiDiagnostics" />
</listeners>
</trace>
</system.diagnostics>
In your WebApiConfig.cs, you can do the following:
IAssembliesResolver assembliesResolver = config.Services.GetAssembliesResolver();
ICollection<Assembly> assemblies = assembliesResolver.GetAssemblies();
StringBuilder errorsBuilder = new StringBuilder();
foreach (Assembly assembly in assemblies)
{
Type[] exportedTypes = null;
if (assembly == null || assembly.IsDynamic)
{
// can't call GetExportedTypes on a dynamic assembly
continue;
}
try
{
exportedTypes = assembly.GetExportedTypes();
}
catch (ReflectionTypeLoadException ex)
{
exportedTypes = ex.Types;
}
catch (Exception ex)
{
errorsBuilder.AppendLine(ex.ToString());
}
}
if (errorsBuilder.Length > 0)
{
//Log errors into Event Log
Trace.TraceError(errorsBuilder.ToString());
}
BTW, some of the above code is actually from the DefaultHttpControllerTypesResolver which Web API uses to resolve the controller types.
http://aspnetwebstack.codeplex.com/SourceControl/latest#src/System.Web.Http/Dispatcher/DefaultHttpControllerTypeResolver.cs
Edited:
One more scenario where you could hit this problem is if your controller is nested inside another class. This was a bug which was fixed later though.
Ok, so I believe I found out what was going on. I am not entirely certain, but at least my problem got fixed.
Simply by changing what was inside of the "data" field in the Ajax call and I have created a class for an object in the application to hold the whole data. It seems that for some reason the method could not have the syntax "Get(int ID)".
Instead, I did something like "Get( object)" and in the Ajax Request something like "data: obj.ID" and voila, it worked.
Also, since the framework is picky about the names of the REST methods (Get, Post, Put and Delete), I changed the name of the method to something else (like Retrieve or something).
Hopefully this will help someone in the future as well.
Best regards,
Mad
Be sure that you have the same parameter names in your methods (int id) as well as in your WebApiConfig/RouteConfig. Try it by changing
public string Get(int id)
{
return "hello";
}
to
public string Get(int? id = null)
{
return "hello";
}
I had the same problem. with me it happens due to a crush in the visual studio (2012). I had the controller file open in visual studio but it wasn't a part of my solution - I couldn't find him in the controllers directory in the solution explorer.
I just added the file to the solution by right clicking on controllers directory => add => existing item.
that fixed the problem for me.
if that doesn't work maybe try to delete the controller and add a new one with the same code . . .