I am new to Sencha Touch so I am still struggling with the usage of stores.
I have created this store which I am successfully using to populate a list:
Ext.define('EventApp.store.events',{
extend: 'Ext.data.Store',
config: {
model: 'EventApp.model.event',
autoLoad: true,
storeId: 'events',
proxy:{
type:'ajax',
url: './resources/EventData.json',
reader: {
type: 'json',
rootProperty: 'events'
}
}
}
});
As I mentiones this store works correctly when referenced from a list and I can display the contents of it. Therefore I am assuming the store is correctly defined.
Unfortunately when I try to access the store from a controller for one of my views (which will be used to populate the items of a carousel) I don't seem to get any data back from the store. The code I am using is the following:
onEventCarouselInitialize : function(compon, eOptions) {
var past = compon.getPast();
var eventsStore = Ext.getStore('events');
eventsStore.each(function(record){
console.log('Record =',record); //<-- this never gets executed.
},this);
}
I have tried executing an eventsStore.load() on an eventsStore.sync() but I never seem to get any elements available in the store.
What am I missing?
Thanks
Oriol
What i have understand is, perhaps your store data has not been loaded when you are accessing it. So put you each() function on store inside this for delaying 500ms:
Ext.Function.defer(function(){
// Put each() here
}, 500);
Have a try by delaying more or less.
Related
Baffled by this and not sure where to start looking.
I have a carousel which I load when the refresh event fires on my backing store:
Ext.define('Rb.store.Items', {
extend: 'Ext.data.Store',
requires: ['Rb.model.Item', 'Ext.data.proxy.Rest'],
config: {
storeId: 'itemstore',
model: 'Rb.model.Item',
proxy: {
type: 'rest',
url: '',
reader: {
type: 'json',
rootProperty: 'items'
}
},
autoLoad: false,
listeners:{
refresh: function( me, data, eOpts ){
console.log("refresh");
var carousel = Ext.ComponentQuery.query('rbdetailcarousel')[0];
carousel.removeAll(true);
console.log(carousel.getItems().getCount());
data.each(function(rec){
console.log(rec.data);
var rdcp = Ext.create('Rb.view.RbDetailCarouselPanel',{
cur_item: rec.data,
style: 'background-image:url(resources/startup/320x460.jpg);background-repeat:no-repeat;',
});
rdcp.items.get(1).setHtml(rec.data.name);
carousel.setActiveItem(rdcp);
});
carousel.setActiveItem(0);
}
}
}
});
My carousel is super simple:
Ext.define('Rb.view.RbDetailCarousel', {
extend: 'Ext.Carousel',
xtype: 'rbdetailcarousel',
config: {
itemId: 'rbdetailcarousel',
}
});
There are two things that are happening here that are strange:
When I call carousel.getItems().getCount(), right after the carousel.removeAll(true), I always get a return value of 1. If I inspect the carousel, there is still one item left in the carousel (it looks like it's the indicator??).
When I reload the store, it clears out all the items except the first one, so that as I refresh more and more I get repeats of the first item, then the remaining items added to the end. It seems as if the removeAll(true) is not removing that first item.
Any ideas on where I can look to solve this? I have a suspicion that I'm not grabbing the reference to the carousel correctly, because I shouldn't be getting back the indicator as one of the items in it, right?
Thanks
As hinted at by OhmzTech and answered on the sencha forum, I was adding items to my carousel which had duplicate itemId's. I'm still a little fuzzy on the standing of these ids (and to what extend they are used by the framework internally), apparently you don't want to have a single container with duplicate children itemIds.
I'm using Sencha Touch 2.3. I'm trying to get a Store instance inside a controller in a similar way thats defined in this article http://www.sencha.com/learn/architecting-your-app-in-ext-js-4-part-3/.
I've defined the 'Location' store in the Controller config. I then try to get the store using 2 methods that both fail. First through Ext.getStore and the second through getLocationStore which should be an autogenerated function. Both fail. The first call returns undefined and the second call throws an exception because the function is not available.
Ext.define('MyApp.controller.Location', {
extend: 'Ext.app.Controller',
config: {
refs: {
locationSearchField: '#locationSearchField'
},
control: {
locationSearchField: {
action: 'onSearchAction'
}
},
stores: [ 'Location' ]
},
onSearchAction: function() {
var locationSearchStore = Ext.getStore('Location');
if (locationSearchStore == undefined) {
Ext.Logger.warn('Could not locate locationSearchStore');
locationSearchStore = this.getLocationStore();
if (locationSearchStore == undefined)
Ext.Logger.warn('Could not location locationSearchStore again!');
else
Ext.Logger.info('Success!');
}
else
Ext.Logger.info('Success!');
}
});
You can get your store by: Ext.data.StoreManager.lookup('Location') (if it's called MyApp.store.Location).
To be sure, that you are in the right context in the onSearchAction, try to call console.dir(this); and check that this is the controller object itself
First of all, you want to access store in sencha touch but you have given link of extjs. Second, you need to define your store first and then add it in app.js file. And then you can access your store by Ext.getStore('Location') method. For reference you shold learn this http://miamicoder.com/2012/sencha-touch-2-stores-adding-removing-and-finding-records/
I have an itemselecor inside a grid, and i have an combobox that should reload only the store inside the itemselector( the value fields should remain intact)
Here is the itemselector
var grid = Ext.widget('form', {
id: 'grid',
title: '',
width: 600,
bodyPadding: 10,
renderTo: 'itemselectorproduto',
items: [{
xtype: 'itemselector',
name: 'itemselector',
id: 'itemsel',
anchor: '100%',
imagePath: '/ux/images/',
store: store,
displayField: 'Nome',
valueField: 'ID',
value: vitrine,
allowBlank: true,
msgTarget: 'side'
}]
});
I tried to call the normal store.load(), but it have no effect and it shows no error on the console
If needed i will post more of the code, but i think just this should be enough
Thanks,
Looking through the code if ItemSelector it doesn't look like it supports any changes in the store once it's been binded. It basically creates local copies of the data. And if you call bindStore method to assign different store - it will erase your selection.
You can always improve code in ItemSelector to allow such behavior. It should not be a problem. You can subscribe to datachanged or load event of the store when binding to it, and then handle situation when store data is changed.
Actually i think the best way to do such thing is using ItemSelector`s "populateFromStore". Sure except of extending item selector. In case of extending you should look on the "onBindStore" function of the ItemSelector.
onBindStore: function(store, initial) {
var me = this;
if (me.fromField) {
me.fromField.store.removeAll()
me.toField.store.removeAll();
// Add everything to the from field as soon as the Store is loaded
if (store.getCount()) {
me.populateFromStore(store);
} else {
me.store.on('load', me.populateFromStore, me);
}
}
}
So as you see in case of the empty store it hooks to the load event. And it should be like this:
onBindStore: function(store, initial) {
var me = this;
if (me.fromField) {
me.fromField.store.removeAll()
me.toField.store.removeAll();
me.store.on('load', me.populateFromStore, me);
// Add everything to the from field as soon as the Store is loaded
if (store.getCount()) {
me.populateFromStore(store);
}
}
}
I'm having trouble redrawing my nested list with sencha touch 2. My code looks something like the following;
var data = {items:[{text:'hello', leaf:true}]};
Ext.application({
name:'main',
launch:function(){
Ext.define('ListItem', {
extend: 'Ext.data.Model',
config: {
fields: ['text']
}
});
var treeStore = Ext.create('Ext.data.TreeStore', {
id: 'mystore',
model: 'ListItem',
defaultRootProperty: 'items',
root: data});
Ext.create('Ext.NestedList', {
id:'mylist',
fullscreen: true,
store: treeStore
});
} // end launch:function()
}); // end Ext.application
During run time, I modify the data variable like so data.items[0].text = 'bye'. How do I get the nestedlist to refresh and show bye? I tried the following but none of them work:
var mystore = Ext.data.StoreManager.lookup('mystore');
mystore.setRoot(data);
Ext.getCmp('mylist').refresh(); // refresh, update, dolayout, repaint etc... does not exist.
Ext.getCmp('mylist').bindstore(mystore); // bindstore is deprecated
you should change data through record/store instances only then the Ext.NestedList will be automatically updated
var record = treeStore.getAt(0);
record.set('text', 'bye');
Working with data within a store is to be done using getById() and getAt(), which return Models that implement NodeInterface. Add data via appendChild, and the rest is self explanatory from there. The id value can be overridden in your data to make navigating the tree easier.
getStore().getById('myFirstLevelId').getById('mySecondLevelId').getById('myThirdLevelId')
http://docs.sencha.com/touch/2-0/#!/api/Ext.data.NodeInterface
Could someone please explain how the insert works to add a record in a datastore
with tha fields: "title", "info" and "price"?
because i tried some things and none of them work. and the sencha website doesnt make it very clear.
Adding a new item to an existing Store isn't that hard actually.
First of you will need to configure your model and store. In your question you name the fields 'title, 'info' and 'price'.
Model:
Ext.regModel('myModel', {
fields: [
{name: 'id', type: 'int' },
{name: 'title', type: 'string' },
{name: 'info', type: 'string' },
{name: 'price', type: 'int' }
]
});
Next you configure the store that will hold the data, based on the above model. I think that, in your case, it should be a model without any data preloaded via, for example, JSON?
So lets make a localstorage (empty store). The Store consists of the model (myModel), you give it a storeID (so that you can later on reference the store by this ID). The proxy is localstorage and the unique ID of the Store will be the ID field of the Model.
Store:
var myStore = new Ext.data.Store({
model: "myModel",
storeId: "myStoreID",
proxy: {
type: "localstorage",
id: "id"
}
});
Now, suppose you have some kind of Form (in which the user can add input a title, info and price, and you want to add these items to the existing store on submittal.
Within the handler of the submittal button you now have to 'call' the store, and perform the add function on it. Within this add function you will have to define the params (the model params) and the data to insert.
Below I have used a mixture of fixed data and a variable to insert.
myStoreID.add({ title: "Mijn Titel", info: "Informatie, price: prijsvar });
The store will now be filled will now be filled with an extra data-record which you can use. Lets say for example that the store is attached to a dataview, then you can perform:
dataView.update();
The above isn't a full tutorial, but I think this will help you along?
Just an update of the YDL answer.
As per the dataView should be related to the updated store, the last sentence dataView.update() should not be needed, due to the automatic update of the views related to a store when it change.
new Ext.DataView({
store: MyStore,
itemSelector: 'div.thumb',
tpl: thumbTpl
});
later, if I do the following, the new item should be displayed in views (List, DataView, etc.) that have MyStore as store.
MyStore.add(newItem);
HTH.
Milton RodrÃguez.
If you are trying to pass in an object that was returned from a getValue() on your form, make sure that you run a
myStore.sync();
after you have called the add() method, or you wont see it in your browsers local store.
It is Very easy try these
// first get those values and store in locally
var A_select1=Ext.getCmp('select1').getValue(); // get value
localStorage.setItem("Adult1_select1",A_select1); // set localStore
var AdultSalutation={
'Adult1_select1':A_select1, // assign the value
};
var AdultSalutationstore = Ext.getStore('Adult_AdultSalutationstore'); // get store
AdultSalutationstore.add(AdultSalutation); // add object
AdultSalutationstore.sync(); // sync
AdultSalutationstore.load(); // load