opensourcepos/application/views/items/form_inventory.php

<div id="required_fields_message"><?php echo $this->lang->line('common_fields_required_message'); ?></div>

<ul id="error_message_box" class="error_message_box"></ul>

<?php echo form_open('items/save_inventory/'.$item_info->item_id, array('id'=>'item_form', 'class'=>'form-horizontal')); ?>
	<fieldset id="inv_item_basic_info">
		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_item_number'), 'name', array('class'=>'control-label col-xs-3')); ?>
			<div class="col-xs-8">
				<div class="input-group">
					<span class="input-group-addon input-sm"><span class="glyphicon glyphicon-barcode"></span></span>
					<?php echo form_input(array(
							'name'=>'item_number',
							'id'=>'item_number',
							'class'=>'form-control input-sm',
							'disabled'=>'',
							'value'=>$item_info->item_number)
							);?>
				</div>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_name'), 'name', array('class'=>'control-label col-xs-3')); ?>
			<div class='col-xs-8'>
				<?php echo form_input(array(
						'name'=>'name',
						'id'=>'name',
						'class'=>'form-control input-sm',
						'disabled'=>'',
						'value'=>$item_info->name)
						); ?>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_category'), 'category', array('class'=>'control-label col-xs-3')); ?>
			<div class='col-xs-8'>
				<div class="input-group">
					<span class="input-group-addon input-sm"><span class="glyphicon glyphicon-tag"></span></span>
					<?php echo form_input(array(
							'name'=>'category',
							'id'=>'category',
							'class'=>'form-control input-sm',
							'disabled'=>'',
							'value'=>$item_info->category)
							);?>
				</div>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_stock_location'), 'stock_location', array('class'=>'control-label col-xs-3')); ?>
			<div class='col-xs-8'>
				<?php echo form_dropdown('stock_location', $stock_locations, current($stock_locations), array('onchange'=>'fill_quantity(this.value)', 'class'=>'form-control'));	?>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_current_quantity'), 'quantity', array('class'=>'control-label col-xs-3')); ?>
			<div class='col-xs-4'>
				<?php echo form_input(array(
						'name'=>'quantity',
						'id'=>'quantity',
						'class'=>'form-control input-sm',
						'disabled'=>'',
						'value'=>to_quantity_decimals(current($item_quantities)))
						); ?>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_add_minus'), 'quantity', array('class'=>'required control-label col-xs-3')); ?>
			<div class='col-xs-4'>
				<?php echo form_input(array(
						'name'=>'newquantity',
						'id'=>'newquantity',
						'class'=>'form-control input-sm')
						); ?>
			</div>
		</div>

		<div class="form-group form-group-sm">
			<?php echo form_label($this->lang->line('items_inventory_comments'), 'description', array('class'=>'control-label col-xs-3')); ?>
			<div class='col-xs-8'>
				<?php echo form_textarea(array(
						'name'=>'trans_comment',
						'id'=>'trans_comment',
						'class'=>'form-control input-sm')
						);?>
			</div>
		</div>
	</fieldset>
<?php echo form_close(); ?>

<script type="text/javascript">
//validation and submit handling
$(document).ready(function()
{		
	$('#item_form').validate($.extend({
		submitHandler: function(form) {
			$(form).ajaxSubmit({
				success: function(response)
				{
					dialog_support.hide();
					table_support.handle_submit("<?php echo site_url($controller_name); ?>", response);
				},
				dataType: 'json'
			});
		},

		errorLabelContainer: '#error_message_box',

		rules: 
		{
			newquantity:
			{
				required: true,
				number: true
			}
   		},

		messages: 
		{
			newquantity:
			{
				required: "<?php echo $this->lang->line('items_quantity_required'); ?>",
				number: "<?php echo $this->lang->line('items_quantity_number'); ?>"
			}
		}
	}, form_support.error));
});

function fill_quantity(val) 
{   
	var item_quantities = <?php echo json_encode($item_quantities); ?>;
	document.getElementById('quantity').value = parseFloat(item_quantities[val]).toFixed(<?php echo quantity_decimals(); ?>);
}
</script>