Not storing value on localstorage in sencha - sencha-touch

Question

I am trying to store data offline aspect, but here i want to store data on localstorage, did not store able to store this, all value getting null in localstorage.
This the based on ; http://www.robertkehoe.com/2012/11/sencha-touch-2-localstorage-example/
Models:
*Online.js*
Ext.define('default.model.Online', {
extend: 'Ext.data.Model',
config: {
fields: [
'cat_id',
'category_name'
]
}
});
Offline.js
Ext.define('default.model.Offline', {
extend: 'Ext.data.Model',
config: {
fields: [
'cat_id',
'category_name'
],
identifier:'uuid', // IMPORTANT, needed to avoid console warnings!
proxy: {
type: 'localstorage',
id : 'category'
}
}
});
Stores:
Ext.define('default.store.News', {
extend:'Ext.data.Store',
config:{
model:'default.model.Online',
proxy: {
timeout: 3000, // How long to wait before going into "Offline" mode, in milliseconds.
type: 'ajax',
url: 'http://alucio.com.np/trunk/dev/sillydic/admin/api/word/categories/SDSILLYTOKEN/650773253e7f157a93c53d47a866204dedc7c363?_dc=1376475408437&page=1&start=0&limit=25' , // Sample URL that simulates offline mode. Example.org does not allow cross-domain requests so this will always fail
reader: {
type: "json",
rootProperty: "data"
}
},
autoLoad: true
}
});
Controller:
Ext.define('default.controller.Core', {
extend : 'Ext.app.Controller',
config : {
refs : {
newsList : '#newsList'
}
},
init : function () {
var onlineStore = Ext.getStore('News'),
localStore = Ext.create('Ext.data.Store', {
model: "default.model.Offline"
}),
me = this;
localStore.load();
onlineStore.on('refresh', function (store,record) {
Ext.Msg.alert('Notice', 'You are in online mode', Ext.emptyFn);
// console.dir(record.data.name);
console.dir(record.get('category_name'));
console.log(record.items[0].raw.category_name);
console.log(record.get('category_name'));
// Get rid of old records, so store can be repopulated with latest details
localStore.getProxy().clear();
store.each(function(record) {
var rec = {
name : record.data.category_name+ ' (from localStorage)' // in a real app you would not update a real field like this!
};
localStore.add(rec);
localStore.sync();
});
});
onlineStore.getProxy().on('exception', function () {
me.getNewsList().setStore(localStore); //rebind the view to the local store
localStore.load(); // This causes the "loading" mask to disappear
Ext.Msg.alert('Notice', 'You are in offline mode', Ext.emptyFn); //alert the user that they are in offline mode
});
}
});
I think, I am not getting value from this record.data.category_nam . Here I am getting first value from this:record.items[0].raw.category_name. So how to store in localstorage.
and View file:
Ext.define('default.view.Main', {
extend : 'Ext.List',
config : {
id : 'newsList',
store : 'News',
disableSelection : false,
itemTpl : Ext.create('Ext.XTemplate',
'{category_name}'
),
items : {
docked : 'top',
xtype : 'titlebar',
title : 'News List'
}
}
});
In localstorage, following output:
category-5ea01a8d-ef1e-469e-8ec4-790ec7306aaf
{"cat_id":null,"category_name":null,"id":"5ea01a8d-ef1e-469e-8ec4-790ec7306aaf"}
category-f3e090dd-8f25-4b20-bb6e-b1a030e07900
{"cat_id":null,"category_name":null,"id":"f3e090dd-8f25-4b20-bb6e-b1a030e07900"}
category-5148e6eb-85ae-4acd-9dcd-517552cf5d97
{"cat_id":null,"category_name":null,"id":"5148e6eb-85ae-4acd-9dcd-517552cf5d97"}
category-ec23ff8b-1faa-4f62-9284-d1281707a9bc
{"cat_id":null,"category_name":null,"id":"ec23ff8b-1faa-4f62-9284-d1281707a9bc"}
category-6c1d
I have display in view but could not store in localstorage for offline propose.where i did wrong, i could not get it.

Answer 1

Record you created should match the SF.model.Offline model.
In your following code
var rec = {
// name is the field name of the `SF.model.Offline` model.
name : record.data.category_name+ ' (from localStorage)'
};
localStore.add(rec);
localStore.sync();
But you see there is no field called name in SF.model.Offline model.
This is how you should do
Models
Ext.define('SF.model.Online', {
extend : 'Ext.data.Model',
config: {
fields: ['cat_id','category_name'],
}
});
Ext.define('SF.model.Offline', {
extend : 'Ext.data.Model',
config: {
fields: ['cat_id','category_name'],
identifier:'uuid',
proxy: {
type: 'localstorage',
id : 'category'
}
}
});
Store
Ext.define('SF.store.Category', {
extend : 'Ext.data.Store',
config : {
model : 'SF.model.Online',
storeId : 'category',
proxy: {
timeout: 3000,
type: 'ajax',
url: 'same url' ,
reader: {
type: "json",
rootProperty: "data"
}
},
autoLoad : true
}
});
In Controller
var onlineStore = Ext.getStore('category'),
localStore = Ext.create('Ext.data.Store', {
model: "SF.model.Offline"
}),
me = this;
localStore.load();
onlineStore.on('refresh', function (store, records) {
localStore.getProxy().clear();
onlineStore.each(function(record) {
//You creating record here, The record fields should match SF.model.Offline model fields
var rec = {
cat_id : record.data.cat_id + ' (from localStorage)',
category_name : record.data.category_name + ' (from localStorage)'
};
localStore.add(rec);
localStore.sync();
});
});
onlineStore.getProxy().on('exception', function () {
me.getNewsList().setStore(localStore);
localStore.load();
Ext.Msg.alert('Notice', 'You are in offline mode', Ext.emptyFn);
});