Class Ext.form.Action.DirectSubmit

Failure type returned when server side processing fails and the result's success property is set to false.

In the case of a form submission, field-specific error messages may be returned in the result's errors property.

var fp = new Ext.form.FormPanel({
...
buttons: [{
    text: 'Save',
    formBind: true,
    handler: function(){
        if(fp.getForm().isValid()){
            fp.getForm().submit({
                url: 'form-submit.php',
                waitMsg: 'Submitting your data...',
                success: function(form, action){
                    // server responded with success = true
                    var result = action.result;
                },
                failure: function(form, action){
                    if (action.failureType === Ext.form.Action.CONNECT_FAILURE) {
                        Ext.Msg.alert('Error',
                            'Status:'+action.response.status+': '+
                            action.response.statusText);
                    }
                    if (action.failureType === Ext.form.Action.SERVER_INVALID){
                        // server responded with success = false
                        Ext.Msg.alert('Invalid', action.result.errormsg);
                    }
                }
            });
        }
    }
},{
    text: 'Reset',
    handler: function(){
        fp.getForm().reset();
    }
}]