I have inserted below part of a template called Chapters. This section of the template calls onto 2 components. I want that when a property change into the New-Writer component to rerender the Am-Editor component. I understand how rerender a view from the Ember docs but how can I programatically rerender the "parent" view from within a component placed into the view in question? Another option would be to able to rerender a component programatically from another component.
<div {{bind-attr class="row togglebook"}} style="padding-top: 40px"> <!-- chapters Display -->
{{#each chapter in book.chapters}}
<div class="col-md-6" style="padding-bottom: 70px">
<div class"center-block">
{{am-editor divIDNumber=_view.contentIndex chapter=chapter book=book}}
<div class"center-block" style="padding-left: 58px; padding-right: 20px">
{{#if toggleChapterDataShowBool}}
{{new-writer divIDNumber=_view.contentIndex chapter=chapter book=book}}
{{/if}}
</div>
</div>
</div>
{{/each}}
</div>
You can send and event from the child view, let that event bubble up and from any of the handling parents you can instruct a re-render.
Related
When I use the ember vertical collection from https://github.com/html-next/vertical-collection, it only renders new components when clicked on the screen, it does not render new components while scrolling. Here is the code below
{{#vertical-collection model estimateHeight=90 bufferSize=5 staticHeight=true lastReached="loadBelow" as |item|}}
-----
{{/vertical-collection}}
Check the container selector on which the scroll event is added. Faced a similar issue. The issue was that I had a parent container div which grows (flex-grow:1) and I passed the containerSelector as the child element which contained the vertical-collection component. Replaced it with the parent div selector and it works normal now.
<div class="inline-slider-header"></div>
<div class="inline-slider-body"> <!-- Has a styling of flex-grow:1 -->
<div class="list-container">
{{#vertical-collection this.items
tagName="div"
estimateHeight=47
bufferSize=3
containerSelector=".inline-slider-body"
renderAll=false
as |item index|
}}
<div class="item">
<p>{{index}}</p>
<p>{{item.title}}</p>
</div>
{{/vertical-collection}}
</div>
</div>
<div class="inline-slider-footer"></div>
I can seem to find a good answer for my problem. I have a sidebar template which contains a div for each item my model contains. When I have hundreds of items to render, it takes up to 8-10 seconds to render the template. I am using ember-data.
How can I render the items that are loaded before it finishes fetching the entire model?
Here is my template :
{{#each conv in model itemController='singleconv'}}
{{#if (equals conv.url selectedSubuserEmail)}}
<div class="conversation-content-wrapper" {{action "clickConv" conv preventDefault=false}}>
<div class="history-message-assigned in-progress-closed" style="display:none;"><p><i class="icon-x"></i>Conversation closed</p></div>
<div class="history-message-assigned in-progress-assignation" style="display:none;"><p><i class="icon-assign"></i>Conversation assigned</p></div>
<div class="history-message-assigned in-progress-reopen" style="display:none;"><p><i class="icon-re-opened"></i>Conversation re-opened</p></div>
<div class={{conv.selectedClass}}>
<div class="conversation-time-history">{{{conv.status}}}</div>
<div class="conversation-details">
<span class="unread-numbers"></span>
{{input type='checkbox' class='chk-conversation' checked=conv.isChecked}}
<span class="conversation-name">{{conv.customer.name}}</span>
<span class="phone-number">{{conv.customer.cellPhoneNumber}}</span>
<p class="conversation-text">{{conv.lastMessage}}</p>
</div>
</div>
</div>
{{/if}}
{{/each}}
This is the main problem in ember's rendering which is getting much better by time, Ember connects all your binding to your created models so it re-renders the view on every added model, and hence the delay.
And I've been in the same situation, you have a couple of solutions here
1- Using Ember.ListView
You can use Ember list-view which is an Ember plug-in that adds lazy rendering to a List of items, very useful if you have items that can be displayed in the same height in pixels.
2- Using Ember Cloaking
Ember Cloaking is about the same as list-view but has flexible heights, although you still need to compute them before rendering.
3- Using visibility checker like waypoints
I've done this myself and its a little tedious but plug-in free none the less
You create a variable in your component that is set to true when it's visible in the waypoint.
sample code, not a real one
export default Ember.Component.extend({
visible:false,
didInsertElement:function() {
var waypoint = new Waypoint({
element: this.$()[0],
handler: function(direction) {
this.set('visibile',true)
}.bind(this)
})
}
})
Then Move your content into this component
And then inside this component:
{{#if visibile}}
<div class="conversation-content-wrapper" {{action "clickConv" conv preventDefault=false}}>
<div class="history-message-assigned in-progress-closed" style="display:none;"><p><i class="icon-x"></i>Conversation closed</p></div>
<div class="history-message-assigned in-progress-assignation" style="display:none;"><p><i class="icon-assign"></i>Conversation assigned</p></div>
<div class="history-message-assigned in-progress-reopen" style="display:none;"><p><i class="icon-re-opened"></i>Conversation re-opened</p></div>
<div class={{conv.selectedClass}}>
<div class="conversation-time-history">{{{conv.status}}}</div>
<div class="conversation-details">
<span class="unread-numbers"></span>
{{input type='checkbox' class='chk-conversation' checked=conv.isChecked}}
<span class="conversation-name">{{conv.customer.name}}</span>
<span class="phone-number">{{conv.customer.cellPhoneNumber}}</span>
<p class="conversation-text">{{conv.lastMessage}}</p>
</div>
</div>
</div>
{{/if}}
and then the "for-each" block
{{#each conv in model itemController='singleconv'}}
{{the-component conv=conv}}
{{/each}}
Then use a counter or something to make the first 10 visible.
As I said this is only a simple example you can dig more into it.
I'm new to Ember, I want to add some query DOM manipulation code to the element in the {{#each}} block. So I google it up and found the solution from this guide:
views/products/index.js
import Spinner from 'appkit/utils/someJqueryCode';
Ember.View.reopen({
didInsertElement : function(){
this._super();
Ember.run.scheduleOnce('afterRender', this, this.afterRenderEvent);
},
afterRenderEvent : function(){
// implement this hook in your own subclasses and run your jQuery logic there
}
});
export default Ember.View.extend({
afterRenderEvent: function() {
Spinner();
}
});
templates/products/index.hbs
<div class='panel panel-default products'>
<div class='panel-heading'>
<h2 class='panel-title'>Our Prodcuts</h2>
</div>
<div class='panel-body'>
<ul class='row'>
{{#each}}
<li class='col-md-4'>
<div class='thumbnail'>
<img {{bind-attr src=url alt=alt}} />
</div>
<div class='caption'>
<h3 class='name-me'>{{name}}</h3>
<p>{{description}}</p>
<div class='row no-gutter'>
<div class='col-xs-3'>
<button class='btn btn-primary'>Buy</button>
</div>
</div>
</div>
</li>
{{/each}}
</li>
</div>
</div>
But I seems after the point when afterRenderEvent() is triggered, all the elements in the {{#each}} block hasn't been rendered to the DOM yet, thus, the jQuery code return undefined
What's the right way to do it?
Your view's didInsertElement hook will fire as soon as the application route is rendered, which happens before the index route. You might think that putting it in the index.js file will work, but it's going to just extend the default application view behavior.
You need to create a more focused view that lives within your index.hbs file. One that is only concerned with your spinner jQuery doohickey. That, and an each/else conditional could work nicely here. For example:
{{#each}}
{{#view App.SpinnerDoohickeyView}}
<li class='col-md-4'>
<div class='thumbnail'>
<img {{bind-attr src=url alt=alt}} />
</div>
<div class='caption'>
<h3 class='name-me'>{{name}}</h3>
<p>{{description}}</p>
<div class='row no-gutter'>
<div class='col-xs-3'>
<button class='btn btn-primary'>Buy</button>
</div>
</div>
</div>
</li>
{{/view}}
{{else}}
<li>Empty collection!</li>
{{/each}}
Notice that I've wrapped each list item in its own view. You could wrap the whole ul if you wanted... this is just an example. The idea is that you are only creating views when you have a model.
And now you can define the view, and simply use the didInsertElement hook to work with jQuery:
App.SpinnerDoohickeyView = Ember.View.extend({
didInsertElement: function () {
this.$('li').css('background', 'blue');
}
});
If you have a model to render, jQuery should be able to safely access it this way. Good luck!
Here's some further reading and some code from the Ember folks that looks like what I've shown you here: http://emberjs.com/guides/views/handling-events/
I have a Ember.js page that displays a table of items and shows details of one of the items when it is selected. The controller looks like this:
CV.IndexController = Ember.ArrayController.extend({
itemController: "CurrVitae",
selectedCurrVitae: false,
actions: {
selectCurrVitae: function(currVitae) {
this.set('selectedCurrVitae', currVitae)
}
}
});
And the index controller is used in a template like this:
<div class="container">
<div class="curr-vitae-list">
{{#each curr_vitae in controller}}
<div class="curr-vitae-item row">
<div class="col-sm-2" {{action selectCurrVitae curr_vitae}}>
{{curr_vitae.name}}
</div>
<div class="col-sm-2">
<!-- NOTE: This method is defined on the item
controller (not the model) so the itemController is
available at this point. -->
{{curr_vitae.createdAtDisplay}}
</div>
<div class="col-sm-7">
<div class="embedded-cell">
{{curr_vitae.summary}}
</div>
<div class="embedded-cell">
{{curr_vitae.objective}}
</div>
</div>
</div>
{{/each}}
</div>
<div class="curr-vitae-view">
<h2>Details</h2>
<!-- EDIT: I have tried setting this
as {{#if selectedCurrVitae itemController="currVitae" }}
to match the way the #each handles item controllers but that did
not seem to work -->
{{#if selectedCurrVitae }}
<!-- NOTE: Down here, however, the item controller is not available
so I can't use methods defined on the item controller for the
currently selected instance. -->
{{ partial "cv_index_details" }}
{{/if}}
</div>
</div>
Question: The problem I'm running in to is that the itemController I've set in the index controller is not available when rendering the selectedCurrVitae in the cv_index_details.
More details:
Specifically, in the partial I want to reuse a editor component (taken from Noel Rappin's Ember.js book). So if the cv_index_details partial looks like this:
<h3 class="selected_cv">{{selectedCurrVitae.name}}</h3>
<div class="row selected_cv_summary">
<h4>Summary</h4>
{{block-editor emberObject=selectedCurrVitae propName="summary" action="itemChanged"}}
</div>
<div class="row selected_cv_experiences">
<h4>Experiences</h4>
{{#each experience in selectedCurrVitae.experiences itemController="experience"}}
{{ partial "experience_detail" }}
{{/each}}
</div>
So in this template, the itemChanged action is not found for the selectedCurrVitae instance. However, I use the same block-editor component for the experience instance and that works correctly; the itemChanged action defined on the ExperienceController is found.
selectedCurrVitae is outside of the itemController, the itemController is only applied inside the each (on each item, hence the name).
Probably the easiest way to accomplish this will be to reuse the item controller and use render.
Template
{{#if selectedCurrVitae }}
{{ render "cv_index_details" }}
{{/if}}
Controller
CV.CvIndexDetailsController = CV.CurrVitaeController.extend();
Or
Template
{{#if selectedCurrVitae }}
{{ render "currVitae" }}
{{/if}}
View
CV.CurrVitaeView = Ember.View.extend({
templateName: 'cv_index_details'
});
Hi there i have a small question that belonging to my small ember application.
JSFiddle upload is here. I used bootstrap accordion to visualize my tickets. When i click on the "click" it adds another accordion into my view. But sadly it cannot be opened or used. Every accordion i dynamically created cannot be opened or closed. There is no error or exception thrown and from my point of view everything should work fine. My click-function looks like this:
click: function() {
this.counter++,
name = this.name+this.counter.toString(),
tre = App.Ticket.create({
Text: "try",
id: name
});
this.pushObject(tre);
}});
The belonging html is here:
<div class="accordion-group">
{{#each content}}
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" {{bindAttr href="id"}}>
Ticket ID/Störfall
</a>
</div>
<div {{bindAttr id="id"}} class="accordion-body collapse in ">
<div class="accordion-inner">
{{Text}}
</div>
</div>
{{/each}}
</div>
I hope you can help me.
You can add an action helper to the accordion link title
<a class="accordion-toggle" data-toggle="collapse"
data-parent="#accordion2"
{{bindAttr href="item.id"}}
{{action "click" item target="view"}}>
Ticket ID/Störfall
</a>
Then implement a click handler event in your view
App.TicketView = Em.View.extend({
click:function(context) {
var el = this.$('a[href='+context.get('id')+']');
el.toggleClass('collapsed');
this.$('#'+el.attr('href')).toggleClass('in');
}
});
Here's a working fiddle