Installation

Install the package through Composer. Edit your project's composer.json file by adding:

"require": {
	"laravel/framework": "4.0.*",
	"gloudemans/shoppingcart": "dev-master"
}

Next, run the Composer update command from the Terminal:

composer update

Now all you have to do is add the service provider of the package and alias the package. To do this open your app/config/app.php file.

Add a new line to the service providers array:

'\Gloudemans\Shoppingcart\ShoppingcartServiceProvider'

And finally add a new line to the aliases array:

'Cart'            => 'Gloudemans\Shoppingcart\Facades\Cart',

Now you're ready to start using the shoppingcart in your application.

Usage

The shoppingcart gives you the following methods to use:

Cart::add()

/**
 * Add a row to the cart
 * 
 * @param string $id      Unique ID of the item
 * @param string $name    Name of the item
 * @param int    $qty     Item qty to add to the cart
 * @param float  $price   Price of one item
 * @param Array  $options Array of additional options, such as 'size' or 'color'
 */
 
 Cart::add('293ad', 'Product 1', 1, 9.99, array('size' => 'large'));

Cart::update()

/**
 * Update the quantity of one row of the cart
 * @param  string  $rowId The rowid of the item you want to update
 * @param  integer $qty   New quantity of the item
 * @return boolean
 */
 $rowId = 'da39a3ee5e6b4b0d3255bfef95601890afd80709';
 
 Cart::update($rowId, 2);

Cart::remove()

/**
 * Remove a row from the cart
 * 
 * @param  string  $rowId The rowid of the item
 * @return boolean   
 */
 
 $rowId = 'da39a3ee5e6b4b0d3255bfef95601890afd80709';
 
 Cart::remove($rowId);

Cart::get()

/**
 * Get a row of the cart by its ID
 * 
 * @param  string $rowId The ID of the row to fetch
 * @return CartRowCollection
 */
 
 $rowId = 'da39a3ee5e6b4b0d3255bfef95601890afd80709';
 
 Cart::get($rowId);

Cart::content()

/**
 * Get the cart content
 *
 * @return CartCollection
 */
 
 Cart::content();

Cart::destroy()

/**
 * Empty the cart
 *
 * @return boolean
 */
 
 Cart::destroy();

Cart::total()

/**
 * Get the price total
 * 
 * @return float
 */
 
 Cart::total();

Cart::count()

/**
 * Get the number of items in the cart
 *
 * @param  boolean $totalItems Get all the items (when false, will return the number of rows)
 * @return int
 */
 
 Cart::count();      // Total items
 Cart::count(false); // Total rows

Collections

As you might have seen, the Cart::content() and Cart::get() methods both return a Collection, a CartCollection and a CartRowCollection.

These Collections extends the 'native' Laravel 4 Collection class, so all methods you know from this class can also be used on your shopping cart. With some addition to easily work with your carts content.

Instances

Now the packages also supports multiple instances of the cart. The way this works is like this:

You can set the current instance of the cart with Cart::instance('newInstance'), at that moment, the active instance of the cart is newInstance, so when you add, remove or get the content of the cart, you work with the newInstance instance of the cart. If you want to switch instances, you just call Cart::instance('otherInstance') again, and you're working with the otherInstance again.

So a little example:

Cart::instance('shopping')->add('192ao12', 'Product 1', 1, 9.99);

// Get the content of the 'shopping' cart
Cart::content();

Cart::instance('wishlist')->add('sdjk922', 'Product 2', 1, 19.95, array('size' => 'medium'));

// Get the content of the 'wishlist' cart
Cart::content();

// If you want to get the content of the 'shopping' cart again...
Cart::instance('shopping')->content();

// And the count of the 'wishlist' cart again
Cart::instance('wishlist')->count();

N.B. Keep in mind that the cart stays in the last set instance for as long as you don't set a different one during script execution.

N.B.2 The default cart instance is called main, so when you're not using instances,Cart::content(); is the same as Cart::instance('main')->content().

Example

Below is a little example of how to list the cart content in a table:

// Controller

Cart::add('192ao12', 'Product 1', 1, 9.99);
Cart::add('1239ad0', 'Product 2', 2, 5.95, array('size' => 'large'));

// View

<table>
	<thead>
    	<tr>
        	<th>Product</th>
        	<th>Qty</th>
        	<th>Item Price</th>
        	<th>Subtotal</th>
    	</tr>
	</thead>

	<tbody>

	<?php foreach($cart as $row) :?>

    	<tr>
        	<td>
            	<p><strong><?php echo $row->name;?></strong></p>
            	<p><?php echo ($row->options->has('size') ? $row->options->size : '');?></p>
        	</td>
        	<td><input type="text" value="<?php echo $row->qty;?>"></td>
        	<td>$<?php echo $row->price;?></td>
        	<td>$<?php echo $row->subtotal;?></td>
    </tr>

	<?php endforeach;?>

	</tbody>
</table>