Dynamic tpl for DataView

[nilez]

I have created search panel like following example (like forum-search example)



Ext.onReady(function(){
var ds = new Ext.data.Store({
url: 'search.php',
reader: new Ext.data.JsonReader({
root: 'topics',
totalProperty: 'totalCount',
id: 'post_id'
},
[
{name: 'postId', mapping: 'post_id'},
{name: 'title', mapping: 'topic_title'},
{name: 'topicId', mapping: 'topic_id'},
{name: 'author', mapping: 'author'},
{name: 'lastPost', mapping: 'post_time', type: 'date', dateFormat: 'timestamp'},
{name: 'excerpt', mapping: 'post_text'}
]

)
, autoLoad: false
});

var resultTpl = new Ext.XTemplate(
'<tpl for=".">',
'<div class="search-item">',
'<h3><span>{lastPost:date("M j, Y")}<br />by {author}</span>',
'<a href="http://extjs.com/forum/showthread.php?t={topicId}&p={postId}" target="_blank">{title}</a></h3>',
'<p>{excerpt}</p>',
'</div></tpl>'
);

var panel = new Ext.Panel({
applyTo: 'search',
title:'Forum Search',
height:300,
autoScroll:true,

items: new Ext.DataView({
tpl: resultTpl,
store: ds,
loadingText : 'Searching...',
itemSelector: 'div.search-item'
}),

tbar: [
'Search: ', ' ',
new Ext.ux.form.SearchField({
store: ds,
width:320
})

});

});

Search consists of tbar (from SearchField.js) and Data view. See following attached image

22675.

The json data can be {\"totalCount\":5,\"topics\":[....]} or {\"totalCount\":0,\"topics\":[]}

If totalCount is 0, "No result to display" should be shown, otherwise data should be shown.

Can I implement dynamic Ext.XTemplate for this data view.

Besides, when I click x button in tbar, all data in dataview should be removed and "No result to display" should not be shown (No data is shown in data view). So, I don't assign any value in emptyText of data view.

Anyone have any idea?


Thank in advance.

[Condor]

Yes, you could do this with the tpl, but this really is a job for emptyText.

If you don't want the emptyText to be shown, then set deferEmptyText to true first, e.g.

dataView.deferEmptyText = true;
dataView.store.removeAll();

[nilez]

Thank Condor.

And how can i implement dynamic tpl for dataview. Can you show any example?

Thank.

[nilez]

Ok, now I have implemented search panel by changing SearchField.js like this




Ext.ns('Ext.ux.form');

Ext.ux.form.SearchField = function(config, dataView) {

// call parent constructor
this.dataview = dataView;
Ext.ux.form.SearchField.superclass.constructor.call(this, config);

};

Ext.extend(Ext.ux.form.SearchField, Ext.form.TwinTriggerField, {
initComponent : function(){
if (!this.store.baseParams)
{
this.store.baseParams = {};
}
Ext.ux.form.SearchField.superclass.initComponent.call(this);
this.on('specialkey', function(f, e){
if(e.getKey() == e.ENTER){
this.onTrigger2Click();
}
}, this);
},

validationEvent:false,
validateOnBlur:false,
trigger1Class:'x-form-clear-trigger',
trigger2Class:'x-form-search-trigger',
hideTrigger1:false,
width:180,
hasSearch : false,
paramName : 'query',

onTrigger1Click : function(){
if(this.hasSearch){
this.setRawValue('');
this.store.baseParams[this.paramName] = '';
this.el.dom.value = '';
this.hasSearch = false;
this.dataview.deferEmptyText = true;
this.dataview.emptyText = '';
this.store.removeAll();
this.focus();
}
else
{
this.setRawValue('');
this.el.dom.value = '';
this.dataview.deferEmptyText = true;
this.dataview.emptyText = '';
}
},

onTrigger2Click : function(){
var v = this.getRawValue();
if(v.length < 1){
this.onTrigger1Click();
return;
}
var o = {start: 0};
this.store.baseParams = this.store.baseParams || {};
this.store.baseParams[this.paramName] = v;
this.store.reload({params:o});
this.hasSearch = true;
this.dataview.deferEmptyText = false;
this.dataview.emptyText = 'No result to display';
}
});

dataView and store is sent from another js that create search panel



var dataView = new Ext.DataView({
tpl: resultTpl,
id : 'search-data-view',
store: ds,
loadingText : 'Searching...',
itemSelector: 'div.search-item'
});

var panel = new Ext.Panel({
applyTo: 'search-panel',
title:'Forum Search',
height:300,
autoScroll:true,

items: dataView,

tbar: [
'Search: ', ' ',
new Ext.ux.form.SearchField({
store: ds,
width:320
}, dataView)
]
});
Please see on onTrigger1Click and onTrigger2Click function in SearchField.js.

If x button (trigger1) is clicked, I using


this.dataview.deferEmptyText = true;
this.dataview.emptyText = '';If search button (trigger2) is clicked, I using


this.dataview.deferEmptyText = false;
this.dataview.emptyText = 'No result to display';It work! What do you think of this code?

[Condor]

No you are using deferEmptyText you should just be able to leave the emptyText set to 'No result to display' (no need to clear it).