I am beginner to ember.
I want to send data from route to component.
import Ember from 'ember';
var model = null;
export default Ember.Route.extend({
model() {
return true;
}
});
i have defined this model in route now i want to use this model in component js file. i have just do console log but it gives undefined.
my component js code is below
import Ember from 'ember';
export default Ember.Component.extend({
didInsertElement() {
console.log(model);
}
});
So can anyone suggest what is the actual way to use data of route in component.
You just return the data you need to pass it to template,
import Ember from 'ember';
export default Ember.Route.extend({
model() {
//here return model data which requires to display template
return true;
}
});
Inside template you can access is using model, in this case you just sent true so your model will contains true.
You need to pass this model to component so that you can access it from component.
Inside template.hbs,
{{my-component model=model }}
You can access model property in component,
import Ember from 'ember';
export default Ember.Component.extend({
didInsertElement() {
console.log('Model ',this.get('model'));
}
});
Welcome to Ember. I am strongly encouraging you to read ember guides and play with ember-twiddle
You need to pass the data to component from template; that is from route's template you need to pass whatever you want (i.e. model) to corresponding model. See the following twiddle for a simple demonstration.
In this example; index route returns a json object (an object with name & surname fields) from the model hook. What is returned from this model hook is passed to my-component inside index.hbs template file as object property. Then you can access the corresponding data within component's js and hbs files easily. In the example; data is shown within my-component.hbs template file. Hope it is clear.
Related
I have an outlet in application.hbs called 'sidebar'. This outlet is used in some routes to render additional info using a component called 'sidebar-info'. In those routes I use renderTemplate to render stuff in the appropriate outlets. For example:
renderTemplate: function(controller, model) {
this.render('components/sidebar-info', {
into: 'application',
outlet: 'sidebar',
model: Ember.Object.create({
title: this.get('i18n').t('signup'),
detailsComponent: 'signup-help'
})
});
this.render('sign-up');
},
This is components/sidebar-info template:
<div class="title">
<h1>{{model.title}}</h1>
</div>
{{#if model.detailsComponent}}
<div class="details">
{{component model.detailsComponent}}
</div>
{{/if}}
When the route template (not the component one) is being rendered, the model defined by the route is overwritten by the model sent to the component. If the original model was something like this:
original_model = {
field_1: 1,
field_2: 2
}
Then using model.field_1 becomes undefined in the context of the template while model.title is available.
Why is the model being overwritten?
I am using Ember 2.2.0
It seems this is the correct behaviour. According to the Route API, this is the explanation of the controller and model options sent to the render method:
controller [String|Object]
the controller to use for this template, referenced by name or as a
controller instance. Defaults to the Route's paired controller
model [Object]
the model object to set on options.controller. Defaults to the
return value of the Route's model hook
This means that setting only the model option will set the model on the Route's paired controller because that is the default option.controller. This means we need either to create a dummy controller that only works to receive the model.
I have tested this and it works as expected.
The example code below is how the model hook is supposed to work by default. Strangely, if I don't include the model hook at all, the model is populated correctly. If I include the model hook as below, it doesn't work because "params" is an empty object. However, this.paramsFor('somemodel') returns {somemodel_id: "1"} So, what am I missing here?
import Ember from 'ember';
export default Ember.Route.extend({
model: function(params) {
return this.store.find('somemodel', params.somemodel_id);
}
});
Nested routes inherit the parent route's model if you do not specify a model hook. If all you are doing is looking up the model to edit you don't need a model hook, if you are querying the store for something else and need access to somemodel you can access it via this._super(...arguments).
export default Ember.Route.extend({
model: function(params) {
return this.store.find('somemodel', this._super(...arguments).get('id'));
}
});
It seems that params don't propagate to nested routes. My router looks like this:
this.route('somemodel', { path: '/somemodels/:somemodel_id' }, function() {
this.route('edit');
});
The "index" route is implied and is the route that receives the params. The edit route is nested and does not receive the params.
Is there a better way of doing this?
import Ember from 'ember';
export default Ember.Route.extend({
model: function(params){
//there must be a better way to do this!
return this.store.find('edition',{
server_id: parseInt(params.edition_id)
}).then(function(e){
return e.get('firstObject')
});
}
});
I want to find the model from the store using a query, and so I end up with an array rather than just a model...
Many thanks.
What is the use of serialize hook in ember route class?
App.PostRoute = Ember.Route.extend({
model: function(params) {
return this.store.find('post', params.post_id);
},
serialize: function(post) {
return { post_id: post.get('id') };
}
});
Ember Documentation says:
If your dynamic segment ends in _id, the default model hook will convert the first part into a model class on the application's namespace (post becomes App.Post). It will then call find on that class with the value of the dynamic segment.
The default serialize hook will pull the dynamic segment with the id property of the model object.
But i am not able to understand the use of serialize hook in route class
The serialize method determines what to use as parameter for the provided entity.
Example.
Say you have the following user model, with the following properties.
id
username
email
Now if you have a list of users, and you want to link to a show user details page, you might use a loop like this.
{{#each users}}
{{#link-to user.show this }} {{username}} {{/link-to}}
{{/each}}
So when Ember sees this link-to helper i will convert it to a link, which might look like this
elvar
Now the default behavior here is to use the id as a parameter, which is what your own example shows, i picks the id from the model. We can change this with the serializer method.
Lets say that instead of using the id, we want to use the username as a parameter.
App.UserShowRoute= Ember.Route.extend({
model: function(params) {
return this.store.find('user', params.user);
},
serialize: function(user) {
return { user: user.get('username') };
}
});
Now the link-to helper will yield the following instead.
elvar
I have a simple app that is using ember-data to load from a RESTful web service and display the data using the route to specify the model.
App.AreasRoute = Ember.Route.extend({
model: function() {
return App.Area.find();
}
});
Then I can render the data in the handlebars template using {{#each content}}
But I want to have a second area of data from a different model displayed on the page as well. I started by creating a View and then rendering the view as part of my application template using {{view App.AnotherView}} which correctly renders the view.
However, this view doesn't have a route and therefore I have nowhere to tell it where to get it's data from. How do I do this?
The best place to load additional content is in the setupController hook of the route.
For example, if you define your route as
App.AreasRoute = Ember.Route.extend({
model: function() {
return App.Area.find();
},
setupController: function(controller) {
controller.set('someArea', App.Area.find('area_id'));
}
});
Then the Area model with id area_id can be accessed by {{someArea}} in your template.