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infernoz
19 Jan 2012, 10:39 AM
Hello,

I am completely new to ExtJS as well as web development in general. I am trying to create a simple ExtJS 4 site with a Servlet on the server side.

I have a hard coded number of rows in a grid, and have a submit button associated with the grid. When the button is pressed I would like all of the data in the grid (possibly some of the data later on) to be sent to the server and processed by my Java controller.

Unfortunately I am not seeing any data being sent as parameters to the server. Request is definitely being sent but I dont see any params but '_dc'. How can this data be sent to the server via in a json format? I have tried the store.save() function and the store.load() function but neither automatically send the data in json format to the server (bolded below).

Your help is greatly appreciated!!!

Code is below:

--Model
Ext.define('DMT.model.PersonGeoUnitModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'sso_id', type: 'string'},
{name: 'sso_type', type: 'string'},
{name: 'geo_unit_purpose', type: 'string'},
{name: 'geo_unit_type', type: 'string'},
{name: 'geo_unit_value', type: 'string'},
{name: 'gs_data_source_id', type: 'string'},
{name: 'start_date', type: 'date'},
{name: 'end_date', type: 'date'},
{name: 'update_date', type: 'date'},
{name: 'update_id', type: 'string'},
{name: 'tax_id_type', type: 'string'},
{name: 'tax_id', type: 'string'},
{name: 'transaction_type', type: 'string'},
{name: 'delete_row', type: 'bool'}]
});

--Store
Ext.define('DMT.store.FakeData', {
extend: 'Ext.data.Store',
model: 'DMT.model.PersonGeoUnitModel',
alias : 'widget.fakeDataStore',

proxy: {
type: 'ajax',
url: '/DMT/index.htm',
reader: {
type: 'json',
root: 'data',
successProperty: 'success'
},
writer: {
type: 'json'
}
},


data: [
{sso_id: 'abc_def', geo_unit_purpose: 'LICENSE', geo_unit_type: 'COUNTRY', geo_unit_value: 'HK', tax_id_type: 'ANLLICID',
tax_id: 'ABCD123'},
{sso_id: 'someone_else', geo_unit_purpose: 'LICENSE', geo_unit_type: 'COUNTRY', geo_unit_value: 'HK', tax_id_type: 'ANLLICID',
tax_id: 'ABCD456'}
]
});


--View

Ext.define('DMT.view.PersonGeoUnitView' ,{
extend: 'Ext.grid.Panel',
alias : 'widget.personGeoUnitView',

title : 'GeoUnitUpdate',
store: 'FakeData',
selType: 'cellmodel',

plugins: [
Ext.create('Ext.grid.plugin.CellEditing', {
clicksToEdit: 1
})
],

dockedItems: [{
xtype: 'toolbar',
dock: 'top',
ui: 'footer',
layout: {
pack: 'left'
},
items: [
{ xtype: 'component', flex: 1 },
{ xtype: 'button', text: 'Submit', width: 80, listeners: {
'click': function() {
var thisStore = Ext.widget('fakeDataStore');
thisStore.save();
*/
alert(thisStore.load(function(records, operation, success) {
console.log(records);
}));*/


}}}
]
}],

initComponent: function() {

this.columns = [
{header: 'SSO_ID', dataIndex: 'sso_id', flex: 1, hideable: false},
{header: 'SSO_TYPE', dataIndex: 'sso_type', flex: 1, hidden: true, hideable: false},
{header: 'GEO_UNIT_PURPOSE', dataIndex: 'geo_unit_purpose', flex: 1, hideable: false},
{header: 'GEO_UNIT_TYPE', dataIndex: 'geo_unit_type', flex: 1, hideable: false},
{header: 'GEO_UNIT_VALUE', dataIndex: 'geo_unit_value', flex: 1, editor: 'textfield', hideable: false},
{header: 'GS_DATA_SOURCE_ID', dataIndex: 'gs_data_source_id', flex: 1, hidden: true, hideable: false},
{header: 'START_DATE', dataIndex: 'start_date', flex: 1, hidden: true, hideable: false},
{header: 'END_DATE', dataIndex: 'end_date', flex: 1, hidden: true, hideable: false},
{header: 'UPDATE_DATE', dataIndex: 'update_date', flex: 1, hidden: true, hideable: false},
{header: 'UPDATE_ID', dataIndex: 'update_id', flex: 1, hidden: true, hideable: false},
{header: 'TAX_ID_TYPE', dataIndex: 'tax_id_type', flex: 1, editor: 'textfield', hideable: false},
{header: 'TAX_ID', dataIndex: 'tax_id', flex: 1, editor: 'textfield', hideable: false},
{header: 'TRANSACTION_TYPE', dataIndex: 'transaction_type', flex: 1, hidden: true, hideable: false},
{header: 'DELETE', dataIndex: 'delete_row', xtype: 'checkcolumn', width: 80, editor: 'checkbox', sortable: false, hideable: false}
];

this.callParent(arguments);
}
});

mitchellsimoens
19 Jan 2012, 12:13 PM
You could use a writer on your store and execute sync (or use autoSync)

http://docs.sencha.com/ext-js/4-0/#!/example/writer/writer.html

infernoz
20 Jan 2012, 9:36 AM
Awesome thanks, I couldnt find any specifics in the basic docs specifying that a writer was needed for this purpose.

Digging a little deeper, I was wondering, if we did not want to send the entire store to the server side, but just particular rows (ex: rows that are even, or rows that have been updated/added), what would be the best practice to do something like this? Off the top of my head I would remove the rows on the client side from the store and then send the store via sync() as mentioned above but wondering if there was a better way.

Also, what does the function save() do different than sync()?

Cheers,

Jason