I am new to ExtJS and am playing around with it, I am receiving following JSON from the server as shown below
{"tid":1,"action":"HelloWorld","method":"getData",
"result": {"InstId":"1",
"value": [
{"country.stateId":"101", "country.stateName":"TA"},
{"country.stateId":"102", "country.stateName":"ABC"},
{"country.stateId":"103", "country.stateName":"DEF"}]}",
"type":"rpc"}
and I need to extract values form the above JSON and populate the combobox. To do this job I need to write a custom Reader to read and populate the in the combobox. Can anyone of you please help me in writing a custom reader?
Following are the various snippet
Ext.define('AM.store.TestStore', {
extend: 'Ext.data.Store',
alias : 'widget.testStore',
model: 'AM.model.TestModel',
autoload:true,
proxy: {
type: 'direct',
directFn: HelloWorld.getData,
extraParams:[ {'InstId': '1', 'boxid':'id'},
{'InstId': '1', 'name':'states'}
],
reader:{
type:'json',
root:'result'
}
});
Following is the view object
Ext.define('AM.view.combobox.TestView' ,{
extend: 'Ext.form.ComboBox',
alias : 'widget.TestView',
fieldLabel: 'States',
store:'TestStore',
renderTo: Ext.getBody(),
displayField: 'country.stateName',
valueField: 'country.stateId',
autoselect:false
});
Following is my Model Object
Ext.define('AM.model.TestModel', {
extend: 'Ext.data.Model',
alias : 'widget.TestModel',
fields: [ {name: 'country.stateId'}, {name: 'country.stateName'}]
);
Following is my controller
Ext.define('AM.controller.Funds', {
extend: 'Ext.app.Controller',
alias : 'widget.FundsController',
views: ['combobox.TestView'],
stores: ['TestStore'],
models:['TestModel']
);
Can anyone please help me to write a custom JSON Reader?
Thanks
Phani Kumar
You don't need to write custom reader for that. I think making couple small changes in your code would be enough:
First, in the proxy definition:
root: 'value'
useSimpleAccessors: true
then in the model for your data:
fields: [{
name: 'id', mapping: 'country.stateId' }, {
name: 'name', mapping: 'country.stateName'
}]
That should do it.
Related
In our application we have a lot of name/value stores, and they are created at load time and put into a JSONStore like so :
Ext.create("Ext.data.JsonStore", {
data: data,
model: 'EM.model.controlUnit.CodeList',
storeId: "cl_" + tableId,
sorters: [{
sorterFn: aSorterFunction
}],
});
The model is pretty simple and looks like this :
Ext.define('EM.model.controlUnit.CodeList', {
extend: 'Ext.data.Model',
fields: [{
name: 'value', type: 'int'
}, {
name: 'label', type: 'string'
}, {
name: 'description', type: 'string'
}]
});
I thought stores were pretty interchangeable so I decided to use the store in the combo (There is no special combo store so I thought a JSONStore must be as good as a SimpleStore). I get the store like so :
var msDataStore = Ext.getStore("cl_t_cl_maritalstatus");
And use the store like so :
{
xtype: 'combo',
fieldLabel: 'Marital Status',
displayField: "label",
valueField: "value",
store: msDataStore
}
The combo is filled with the values from the store when I run the application, however, when I pop down the combo box, this error is thrown :
ext-debug-w-comments.js:9951 Uncaught
Ext.data.proxy.Server.buildUrl(): You are using a ServerProxy but have
not supplied it with a url.
I do not want any server proxy. These are simple locally stored name value collections.
Can JSONStores be used with combos?
If not. What is the best way to convert a JSONStore into something acceptable for the combo. I can chop, change, restructure the store object. But I just want to know if there is something simpler that I can do before going on some kind of long and pointless journey.
This problem is related 'proxy' property. Default proxy for JsonStore is 'ajax';
proxy: {
type : 'ajax',
reader: 'json',
writer: 'json'
}
You should override with 'memory' like that;
proxy: {
type: 'memory'
}
Your final store is;
Ext.create("Ext.data.JsonStore", {
data: data,
model: 'EM.model.controlUnit.CodeList',
storeId: "cl_" + tableId,
proxy: {
type: 'memory'
}
sorters: [{
sorterFn: aSorterFunction
}],
});
A JsonStore without URL is completely acceptable, but you have to make sure the combo does not trigger a load operation when clicking on the dropdown. This is done by adding to the combo definition the config option queryMode:'local':
{
xtype: 'combo',
fieldLabel: 'Marital Status',
displayField: "label",
valueField: "value",
queryMode: 'local',
store: msDataStore
}
edit http://jsfiddle.net/zns6B/4/ Added js fiddle link and running into a cannot get 'Fields' of undefined now
edit2 So i found that the second grids store model is correct with Sc.Model.B. But the records in the store have ids that are Sc.Model.A . So my store model is set to Sc.Model.B but the store is using Sc.Model.A . It still gets stores the data in the store but only as if the model was set to Sc.Model.A in the first place.
edit3 I have take all the creation of instance out of my ListGrid. I have instead added them when creating the list grid. I have added the following. This does not work either. I am at a lose for what to do.
var obj1 = Ext.create('Sc.ListGrid',{
title: "first Component",
foo: true,
id: 'firstGrid',
myStore: Ext.create('My.Store.MyStore',{model:Ext.create('My.Model.Model'});
renderTo: 'renderToMe1'
});
I am trying to generate these two grids. When foo == true i want it to generate a store with model A. When it equals false i want it to use model B. I have tried to just specifically add the My.Model.MyModel but that does not work. The second grid will somehow inherit the first models model. I have changed it just to try and use fields instead of using the model at all but the second grid still uses the first grids.
I have also tried declaring the Stores inside the initComponent as well but i get the same result either way.
var obj1 = Ext.create('Sc.ListGrid',{
title: "first Component",
foo: true,
id: 'firstGrid',
renderTo: 'renderToMe1'
});
var obj2 = Ext.create('Sc.ListGrid',{
title: "second Component",
foo: false,
renderTo: 'renderToMe2'
});
Sc.ListGrid
Ext.define('Sc.ListGrid', {
extend: 'Ext.grid.Panel',
title: 'Grid',
store: Ext.data.StoreManager.lookup('bleh'),
requires: ['stuff'],
columns: [
{ text: 'id', dataIndex: 'id' },
],
config:{
foo: null,
},
initComponent: function(){
if(this.foo == true){
Ext.apply(this,{
store: this.buildStore1()
});
}
if(this.foo == false){
Ext.apply(this,{
store: this.buildStore2()
});
}
this.callParent();
},
buildStore1:function(){
return Ext.create('Sc.Store.League.LeagueStore',{url:'somewhere',fields:["S"]});
},
buildStore2:function(){
return Ext.create('Sc.Store.League.LeagueStore',{url:'somewhere',fields:["A"]});
}
});
Also an example of a model i am trying to use as well.
Ext.define('Sc.Model.A', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'string'},
{name: 'type', type: 'string'},
{name: 'gamename', type: 'string'}
]
});
Ext.define('Sc.Model.B', {
extend: 'Ext.data.Model',
fields: [
{name: 'id', type: 'string'},
{name: 'type', type: 'string'},
{name: 'gamename', type: 'string'},
{name: 'something1', type: 'string'},
{name: 'something2', type: 'string'},
]
});
It will create both grids and load the data from my webservice. When i check the grid with Sc.Model.B's data it will have id and type. But will not have any data for something1, and something2. My webserivce is returning json and all values are entered. There are no nulls. If i Ext.getCmp('firstGrid').getStore().getData(0); If i use Ext.getCmp('firstGrid').getStore() and check the model name. It shows Model B but reflects A
Do you need it to be done in the initComponent()??
This is a fiddle I saved from a while ago when I was trying to do something similar. If you need help tweaking it let me know and ill update it.
The main thing to note is the grid.reconfigure(store,columns);
That will change the grid's store and columns appropriately.
http://jsfiddle.net/zqG55/1/
The issue was that the proxy wasn't being set or created properly because the proxy model was referencing the previous model instance. This is my solution
var themodel = 'A.Model.SomeModel';
var myProxy = new Ext.data.proxy.Ajax({
model: themodel,
url: url,
reader: {
type: 'json',
}
});
Ext.apply(this,{
columns: modelColumns.columns,
store: Ext.create('M.Store.MyStore',{
model: themodel ,
autoLoad: true,
proxy: myProxy
})
});
For some reason unknown to me, I cannot get my Ext JS store to display in my combobox
Here's my model:
Type.js
Ext.define('AM.model.Type', { //app name config is "AM"
extend: 'Ext.data.Model',
fields: [
{ name: 'field', type: "string" }
]
});
And my store:
Type.js
Ext.define('AM.store.Type', {
extend: 'Ext.data.Store',
model: 'AM.model.Type',
storeId: 'typestore',
data: [
{ field: 'Bobby' },
{ field: 'Jimbo' },
{ field: 'Craig' }
]
});
And where I call it:
app.js
{ xtype: 'combobox', padding: 5, store: Ext.getStore('typestore'), displayField: 'field'}...
Any ideas?
I don't see anything wrong here. The problem is probably elsewhere.
I have created a sample fiddle with your code slightly simplified, and it works fine.
http://jsfiddle.net/dbrin/28sX7/
I solved the problem by instantiating my store class with into a variable using Ext.Create
and setting my comboboxes queryMode to local (remote would display the data but keep on loading and loading).
I have created navigaton view using Sencha touch 2. Navigation view has list component which i want to load it using store and model. I created model and store as required. On running my app the list does not render any data.
It also gives warning in conolse [Ext.dataview.List#applyStore] The specified Store cannot be found . I am not sure what this error means.
Here is my mvc code,
model:
Ext.define('GS.model.BlogModel', {
extend: 'Ext.data.Model',
config: {
fields: [
{name: 'title', type: 'auto'},
{name: 'author', type: 'auto'},
{name: 'content', type:'auto'}
]
}
});
store:
Ext.define('GS.store.blogs',{
extend:'Ext.data.Store',
config:{
model:'GS.model.BlogModel',
autoLoad :true,
proxy:{
type:'jsonp',
url:'https://ajax.googleapis.com/ajax/services/feed/load?v=1.0&q=http://feeds.feedburner.com/SenchaBlog',
reader:{
type:'json',
rootProperty:'responseData.feed.entries'
}
}
}
});
view:
Ext.define('GS.view.Blog',{
extend:'Ext.navigation.View',
xtype:'blog',
requires:[
'Ext.dataview.List',
'Ext.data.proxy.JsonP',
'Ext.data.Store',
'GS.store.blogs'
],
config: {
title:'Blog',
iconCls:'star',
items:{
xtype:'list',
itemTpl:'{title}',
title:'Recent Posts',
store:'GS.store.blogs'
}
}
});
Can someone point me out what is missing/
Any help appreciated.
The store property in items for your list needs to be an instance, not the name of the class. GS.store.blogs is the class name. You need to create an instance of this class using Ext.create and pass that instance in items. Oh yeah, and your syntax for items is wrong too. Needs to be an array [] not an object {}. So something like:
var blogsStore = Ext.create("GS.store.blogs"); //put this in the items list
Ext.define('GS.view.Blog',{
extend:'Ext.navigation.View',
xtype:'blog',
requires:[
'Ext.dataview.List',
'Ext.data.proxy.JsonP',
'Ext.data.Store',
'GS.store.blogs'
],
config: {
title:'Blog',
iconCls:'star',
items:[{
xtype:'list',
itemTpl:'{title}',
title:'Recent Posts',
store: blogsStore //Store instance here. And items are in array, not Object
}]
}
});
As part of my EXTJS 4 learning process, I am trying to establish a simple process of database connection - loading a value in a data Store - taking the value and placing it in a dataField.
The data is loaded fine from the php script and placed into the Store via a json call. (as confirmed through FireBug)
However, the dataField, does not seem to be able to load the value.
Here is what I have so far:
//Model definition
Ext.define('FingerModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', type: 'string'}
]
});
//Store Definition
var est_data = new Ext.data.Store({
model: 'FingerModel',
proxy: {
type: 'ajax',
url: 'finger.php',
extraParams: {opt: 'getName'},
reader: {
type: 'json',
root: 'results',
totalProperty: 'total'
}
},
autoLoad: true,
// turn off remote sorting
remoteSort: false
});
//Form definition
var fingerForm = Ext.create('Ext.form.Panel', {
width: 500,
title: 'Finger',
waitMsgTarget: true,
items: [{
xtype: 'fieldset',
title: 'Finger Form',
items: [{
xtype:'textfield',
fieldLabel: 'Location Name',
name: 'name'
}]
}]
});
fingerForm.getForm().loadRecord(FingerModel);
Anybody see anything obvious that I'm doing wrong?
Thanks in advance.
M.
Ext.form.field.Text does not have a 'store' property. How would it know which row of the store to use?
You should use Form.loadRecord() to load the model into the form, and it will set form fields with the same name as the model field names.