issue with multiple property of combogrid

[catpaw]

I'm using the combogrid with multiple property in a form.
I have 2 actions: Add and Edit, so when I do the Add, the combogrid it looks ok but in the php side only got the last item I selected.
To correct this issue I added like a "new" parameter in the onSubmit function for the submit method.
Like this:
param.almacenes = $('#almacenes').combogrid('getValues');
and it works, I've got every item I selected.
But when I want do a edit a register, I select it and I get a message error:

The object does not accept the property or method join.

In this case the combogird should load the values store in the data base in that field and I get a blank combogrid.

Here's my full code:

the html:

the combogrid:

Code:

<input id="almacenes" name="almacenes" class="easyui-combogrid" style="width:240px" 
                            data-options="  
                            multiple: true,
                            panelWidth:240,
                            panelHeight:280,
                            mode:'remote',
                            url: 'folder/get_almacenes.php',
                            idField:'id', //like 100, 300 o A23
                            textField:'id',
                            fitColumns:false,
                            columns:[[
                                    {field:'ck',checkbox:true},
                                    {field:'id',title:'Clave',width:50},
                                    {field:'name',title:'Nombre',width:155}
                                ]]"
                        />

easyui function to save the form data:

Code:

function save(){
	$('#form').form('submit',{
		url: url, 
		onSubmit: function(param){
			param.almacenes = $('#almacenes').combogrid('getValues'); //this instruction had to add to get all the items I select......otherwise I only get the last one select
			var isValid = $(this).form('validate');
			return isValid;
		},
		success: function(result){ 
			var result = eval('('+result+')');
			if (result.success){
				$('#dlg').dialog('close');
				$('#dg').datagrid('reload');
				$.messager.alert('Aviso','Operación éxitosa','info');
			} else{
				$.messager.alert('Error',result.msg,'error');
			}
		}
	});
}

and the php code:

Code:

//get the variable, 
$almacenes = $_POST['almacenes'];
//the content should be like: 100,300,A23 (for example)
//and after do the insert to db

the field that stores this variable is varchar (100)

I'm using the 1.3.2. version

thank you so much

*sorry for my bad english

[stworthy]

Try this.

Code:

<input id="almacenes" name="almacenes[]" class="easyui-combogrid" ...>

Code:

//get the variable, 
$almacenes = join(',', $_POST['almacenes']);
//now the content is: 100,300,A23 (for example)

[catpaw]

hi thank you for your time

first change the name tag, like you said:

name="almacenes[]"

  I seems reasonable

but, then if I change this:

$almacenes = $_POST['almacenes'];

to this:

$almacenes = join(',', $_POST['almacenes']);

almacenes field is not saved in the database

mi query insert is:

$sql = "INSERT INTO table (field1, field2, field3, almacenes) values ('$value1', '$value2', '$value3', '$almacenes')";

and in the edition still do not checked the selected rows