I have a custom component that I'd like to attach a user interaction action to:
pro-form-price-field{action 'saveCatalogTicket' ticket on='focus-out'} currency="usd" value=ticket.base_price class='inline-field inline-field-medium'
This fails to compile. Any ideas to how I can attach an onFocusOut to a custom component?
Just place focusOut function in pro-form-price-field.js file.
import Ember from 'ember';
const { on } from Ember;
export default Ember.Component.extend({
focusIn(){
},
// or as Thernys pointed out use on event.
saveCatalogTicket: on('focusOut', function(){
})
});
Related
Component action triggers perfectly.
import Ember from 'ember';
export default Ember.Component.extend({
actions: {
searchField: function() {
console.log('searchField');
this.sendAction('searchField');
}
}
});
Route does not get triggered.
import Ember from 'ember';
export default Ember.Route.extend({
actions: {
searchField: function() {
console.log('ROUTE');
}
}
});
Handlebars
{{input key-up='searchField' searchField=(action "searchField")}}
I have spent so much time with this I am starting to lose interest with Ember.js, as I have also tried according to the documentation, but I get the same result.
http://emberjs.com/api/classes/Ember.Component.html#method_sendAction
sendAction will not reach to route.
You have two options,
define searchField function in controller and from there you can route functionthis.send('searchField')
To directly call from component to route, there is addon ember-route-action-helper for this.
ember install ember-route-action-helper
Refer answer for more info.
To play around - Sample Twiddle
I have a route in ember which looks like
//fish.js
import Ember from 'ember';
export default Ember.Route.extend({
model: function(params) {
return Ember.RSVP.hash({
fishPrices: this.store.query('fish-price', {filter: {type: params.type}}),
type: params.type
});
}
});
My fish.hbs uses model.type to change text on the page. However, I need to hand model.fishPrices off to a component which plots the price of the fish as a function of time:
//fish-price-plot.js
import Ember from 'ember';
/* global Plotly */
export default Ember.Component.extend({
didInsertElement() {
console.log(this.get('model'));
Plotly.plot( 'fish-price-plot', [{
// ...
//Need to access model.fishPrices here
}
});
How do I access the model in this component? I see a lot of information that suggests that I should be able to do something like
var fishPrices = this.get('model.fishPrices');
//do something with fishPrices
but this always ends up undefined.
One way is directly passing it to the component props like this:
// route template in which you want to use your component & model
{{fishprice-plot model=model}}
Have a look at the following twiddle that demo's the first use case.
The other is injecting a service into the component with the required data.
// components/fishprice-plot.js
export default Ember.Component.extend({
fishData: Ember.inject.service()
});
Have a look at this twiddle that demonstrates passing data to a component more comprehensively, and also this part of the guides, as pointed out by #locks in comments.
You can also have a look at this SO link regarding passing properties to your component.
How can transitionToRoute be called cleanly from within an Ember component?
It works with injecting a controller into the component and calling the controller's transitionToRoute function, however I'd like something a little more elegant if possible.
What it currently looks like inside the component's javascript:
// this.controller is injected in an initializer
this.controller.transitionToRoute("some.target.route.name");
What would be nicer in the component's javascript:
transitionToRoute("some.target.route.name");
One goal is do this without using sendAction as this particular component has a single purpose and should always transition to the same route. There's no need for any other Ember artifacts to be aware of the route this component always transitions to, there's no need for the associated indirection. The responsibility for the target route is owned by this component.
UPDATE Please see the other more recent answers for how to achieve this with less code in newer Ember versions, and vote those up if they work for you - Thanks!
Inject the router into the components and call this.get('router').transitionTo('some.target.route.name').
To inject the router into all components, write an initializer at app/initializers/component-router-injector.js with the following contents:
// app/initializers/component-router-injector.js
export function initialize(application) {
// Injects all Ember components with a router object:
application.inject('component', 'router', 'router:main');
}
export default {
name: 'component-router-injector',
initialize: initialize
};
Sample usage in a component:
import Ember from 'ember';
export default Ember.Component.extend({
actions: {
submit: function() {
this.get('router').transitionTo('some.target.route.name');
}
}
});
Jan 22, 2018 update
As of Ember 2.15, phase 1 of the public router service is implemented.
Transition to a route from inside a component:
import { inject as service } from '#ember/service';
export default Ember.Component.extend({
router: service(),
actions: {
someAction() {
this.get('router').transitionTo('index');
}
}
});
Use
router: service()
instead of
router: service('-routing')
import Component from '#ember/component';
import {inject as service} from '#ember/service';
export default Component.extend({
router: service(),
actions: {
onClick(params) {
let route = this.getMyRoute(params);
this.get('router').transitionTo(route);
}
}
});
If you want to use the router only in a specific component or service or controller, you may try this:
Initialize an attribute with the private service -routing. The - because it's not a public API yet.
router: service('-routing'),
And then inside any action method or other function inside the service or component:
this.get('router').transitionTo(routeName, optionalParams);
Note: It'll be transitionToRoute in a controller.
You can use container to get access to any needed part of application. To get application controller :
this.container.lookup('controller:application')
But what about structure of application - components should generate events - so my opinion it's better to use sendAction. Cause in future you can get situation, when you need to filter such behavior ( for example ) or other application-specific logic before transition
I have an ember application with a controller header.js and a template header.hbs.
Now I have some javascript I need to execute at document $( document ).ready()
I saw on Ember Views there is didInsertElement but how do I do this from the controller?
// controllers/header.js
import Ember from 'ember';
export default Ember.Controller.extend({
});
// views/header.js
import Ember from 'ember';
export default Ember.Controller.extend({
});
// templates/header.js
test
I read several times it's not good practice to be using Ember Views?
the controller is not inserted (the view is) hence there is no didInsertElement.
If you need something to run once, you can write something like this:
import Ember from 'ember';
export default Ember.Controller.extend({
someName: function () { // <--- this is just some random name
// do your stuff here
}.on('init') // <---- this is the important part
});
A more actual answer (Ember 2.18+) while honouring the same principle as mentioned in user amenthes' answer: it's no longer advised to use Ember's function prototype extensions. Instead you can override the init() method of a controller directly. Do note that you'll have to call this._super(...arguments) to ensure all Ember-related code runs:
import Controller from '#ember/controller';
export default Controller.extend({
init() {
this._super(...arguments); // Don't forget this!
// Write your code here.
}
});
I am using Ember's Need Api to call a method of a controller in another controller. I am able to get the instance of the controller but when I am calling it method it returns me this error TypeError: Object [object Object] has no method.
This is how I am calling it:
Cards.CardsIndexController = Ember.Controller.extend({
needs: 'account_info',
actions: {
accountInfoStart:function(){
console.log(this.get('controllers.account_info').test()); // error here
}
}
});
This is the controller whose function I want to call
Cards.AccountInfoController = Ember.Controller.extend({
actions:{
test: function(){
alert(1);
}
}
});
How can I solve it?
test is not technically a method, but an action or event. Use the send method instead:
this.get('controllers.account_info').send('test', arg1, arg2);
As per Ember documentation; create a property that lazily looks up another controller in the container. This can only be used when defining another controller.
legacy ember application example:
App.PostController = Ember.Controller.extend({
accountInfo: Ember.inject.controller()
this.get('accountInfo').send('test')
});
modern ember application example:
// in an ember app created with ember-cli
// below snippet would be the app/controllers/post.js file
import Ember from 'ember';
export default Ember.Controller.extend({
appController: Ember.inject.controller('application')
});
You can find more documentation about Ember.inject here
From the Updated Ember Documentation :
import { inject } from '#ember/controller';
export default Ember.Controller.extend({
appController: inject('application')
});
For further reference, you can find out by this link https://guides.emberjs.com/release/applications/dependency-injection/#toc_ad-hoc-injections