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Writer Class

Base Writer class used by most subclasses of Ext.data.proxy.Server. This class is responsible for taking a set of Ext.data.Operation objects and a Ext.data.Request object and modifying that request based on the Operations.

For example a Ext.data.writer.Json would format the Operations and their Ext.data.Model instances based on the config options passed to the JsonWriter's constructor.

Writers are not needed for any kind of local storage - whether via a Web Storage proxy (see localStorage and sessionStorage) or just in memory via a MemoryProxy.

Namespace: Ext.data.writer

Base Types

Constructors

Name Description
Writer(object) Creates new Writer.
Writer(WriterConfig)
Writer(Object[])

Methods

Name Description
getRecordData(Model, object) Formats the data for each record before sending it to the server. This method should be overridden to format the data in a way that differs from the default.
write(Request) Prepares a Proxy's Ext.data.Request object

Fields

Name Description
nameProperty This property is used to read the key for each value that will be sent to the server. For example:
  Ext.define('Person', {
            extend: 'Ext.data.Model',
            fields: [{
            name: 'first',
            mapping: 'firstName'
            }, {
            name: 'last',
            mapping: 'lastName'
            }, {
            name: 'age'
            }]
            });
            new Ext.data.writer.Writer({
            writeAllFields: true,
            nameProperty: 'mapping'
            });
            // This will be sent to the server
            {
            firstName: 'first name value',
            lastName: 'last name value',
            age: 1
            }
            
If the value is not present, the field name will always be used. Defaults to: "name"
writeAllFields True to write all fields from the record to the server. If set to false it will only send the fields that were modified. Note that any fields that have Ext.data.Field.persist set to false will still be ignored. Defaults to: true
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