Complex classes like LaraCart often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use LaraCart, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 15 | class LaraCart implements LaraCartContract |
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| 16 | { |
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| 17 | const QTY = 'qty'; |
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| 18 | const HASH = 'generateCartHash'; |
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| 19 | const PRICE = 'price'; |
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| 20 | const SERVICE = 'laracart'; |
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| 21 | const RANHASH = 'generateRandomCartItemHash'; |
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| 22 | |||
| 23 | protected $events; |
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| 24 | protected $session; |
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| 25 | |||
| 26 | public $cart; |
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| 27 | |||
| 28 | /** |
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| 29 | * LaraCart constructor. |
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| 30 | * |
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| 31 | * @param SessionManager $session |
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| 32 | * @param Dispatcher $events |
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| 33 | */ |
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| 34 | public function __construct(SessionManager $session, Dispatcher $events) |
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| 41 | |||
| 42 | /** |
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| 43 | * Sets and Gets the instance of the cart in the session we should be using |
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| 44 | * |
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| 45 | * @param string $instance |
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| 46 | * |
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| 47 | * @return LaraCart |
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| 48 | */ |
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| 49 | public function setInstance($instance = 'default') |
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| 50 | { |
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| 51 | $this->get($instance); |
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| 52 | |||
| 53 | $this->session->set('laracart.instance', $instance); |
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| 54 | |||
| 55 | $this->events->fire('laracart.new'); |
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| 56 | |||
| 57 | return $this; |
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| 58 | } |
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| 59 | |||
| 60 | /** |
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| 61 | * Gets the instance in the session |
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| 62 | * |
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| 63 | * @param string $instance |
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| 64 | * |
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| 65 | * @return $this cart instance |
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| 66 | */ |
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| 67 | public function get($instance = 'default') |
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| 75 | |||
| 76 | /** |
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| 77 | * Gets an an attribute from the cart |
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| 78 | * |
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| 79 | * @param $attribute |
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| 80 | * @param $defaultValue |
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| 81 | * |
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| 82 | * @return mixed |
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| 83 | */ |
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| 84 | public function getAttribute($attribute, $defaultValue = null) |
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| 85 | { |
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| 86 | return array_get($this->cart->attributes, $attribute, $defaultValue); |
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| 87 | } |
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| 88 | |||
| 89 | /** |
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| 90 | * Gets all the carts attributes |
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| 91 | * |
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| 92 | * @return mixed |
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| 93 | */ |
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| 94 | public function getAttributes() |
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| 95 | { |
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| 96 | return $this->cart->attributes; |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * Adds an Attribute to the cart |
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| 101 | * |
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| 102 | * @param $attribute |
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| 103 | * @param $value |
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| 104 | */ |
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| 105 | public function setAttribute($attribute, $value) |
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| 106 | { |
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| 107 | array_set($this->cart->attributes, $attribute, $value); |
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| 108 | |||
| 109 | $this->update(); |
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| 110 | } |
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| 111 | |||
| 112 | /** |
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| 113 | * Updates cart session |
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| 114 | */ |
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| 115 | public function update() |
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| 116 | { |
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| 117 | $this->session->set(config('laracart.cache_prefix', 'laracart') . '.' . $this->cart->instance, $this->cart); |
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| 118 | |||
| 119 | $this->events->fire('laracart.update', $this->cart); |
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| 120 | } |
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| 121 | |||
| 122 | /** |
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| 123 | * Removes an attribute from the cart |
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| 124 | * |
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| 125 | * @param $attribute |
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| 126 | */ |
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| 127 | public function removeAttribute($attribute) |
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| 128 | { |
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| 129 | array_forget($this->cart->attributes, $attribute); |
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| 130 | |||
| 131 | $this->update(); |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * Creates a CartItem and then adds it to cart |
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| 136 | * |
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| 137 | * @param string|int $itemID |
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| 138 | * @param null $name |
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| 139 | * @param int $qty |
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| 140 | * @param string $price |
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| 141 | * @param array $options |
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| 142 | * @param bool|true $taxable |
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| 143 | * |
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| 144 | * @return CartItem |
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| 145 | */ |
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| 146 | public function addLine($itemID, $name = null, $qty = 1, $price = '0.00', $options = [], $taxable = true) |
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| 150 | |||
| 151 | /** |
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| 152 | * Creates a CartItem and then adds it to cart |
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| 153 | * |
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| 154 | * @param $itemID |
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| 155 | * @param null $name |
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| 156 | * @param int $qty |
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| 157 | * @param string $price |
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| 158 | * @param array $options |
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| 159 | * @param bool|false $taxable |
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| 160 | * @param bool|false $lineItem |
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| 161 | * |
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| 162 | * @return CartItem |
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| 163 | */ |
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| 164 | public function add( |
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| 165 | $itemID, |
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| 166 | $name = null, |
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| 167 | $qty = 1, |
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| 168 | $price = '0.00', |
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| 169 | $options = [], |
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| 170 | $taxable = true, |
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| 171 | $lineItem = false |
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| 172 | ) { |
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| 173 | $item = $this->addItem( |
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| 174 | new CartItem( |
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| 175 | $itemID, |
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| 176 | $name, |
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| 177 | $qty, |
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| 178 | $price, |
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| 179 | $options, |
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| 180 | $taxable, |
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| 181 | $lineItem |
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| 182 | ) |
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| 183 | ); |
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| 184 | |||
| 185 | return $this->getItem($item->getHash()); |
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| 186 | } |
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| 187 | |||
| 188 | /** |
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| 189 | * Adds the cartItem into the cart session |
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| 190 | * |
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| 191 | * @param CartItem $cartItem |
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| 192 | * |
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| 193 | * @return CartItem |
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| 194 | */ |
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| 195 | public function addItem(CartItem $cartItem) |
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| 196 | { |
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| 197 | $itemHash = $cartItem->generateHash(); |
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| 198 | |||
| 199 | if ($this->getItem($itemHash)) { |
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| 200 | $this->getItem($itemHash)->qty += $cartItem->qty; |
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| 201 | } else { |
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| 202 | $this->cart->items[] = $cartItem; |
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| 203 | } |
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| 204 | |||
| 205 | $this->events->fire('laracart.addItem', $cartItem); |
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| 206 | |||
| 207 | $this->update(); |
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| 208 | |||
| 209 | return $cartItem; |
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| 210 | } |
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| 211 | |||
| 212 | /* |
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| 213 | * Find items in the cart matching a data set |
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| 214 | * |
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| 215 | * @return array |
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| 216 | */ |
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| 217 | public function find($data) |
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| 218 | { |
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| 219 | $matches = []; |
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| 220 | |||
| 221 | foreach ($this->getItems() as $item) { |
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| 222 | if ($item->find($data)) { |
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| 223 | $matches[] = $item; |
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| 224 | } |
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| 225 | } |
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| 226 | |||
| 227 | return $matches; |
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| 228 | } |
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| 229 | |||
| 230 | /** |
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| 231 | * Finds a cartItem based on the itemHash |
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| 232 | * |
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| 233 | * @param $itemHash |
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| 234 | * |
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| 235 | * @return CartItem | null |
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| 236 | */ |
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| 237 | public function getItem($itemHash) |
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| 238 | { |
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| 239 | return array_get($this->getItems(), $itemHash); |
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| 240 | } |
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| 241 | |||
| 242 | /** |
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| 243 | * Gets all the items within the cart |
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| 244 | * |
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| 245 | * @return array |
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| 246 | */ |
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| 247 | public function getItems() |
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| 248 | { |
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| 249 | $items = []; |
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| 250 | if (isset($this->cart->items) === true) { |
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| 251 | foreach ($this->cart->items as $item) { |
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| 252 | $items[$item->getHash()] = $item; |
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| 253 | } |
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| 254 | } |
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| 255 | |||
| 256 | return $items; |
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| 257 | } |
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| 258 | |||
| 259 | /** |
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| 260 | * Updates an items attributes |
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| 261 | * |
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| 262 | * @param $itemHash |
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| 263 | * @param $key |
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| 264 | * @param $value |
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| 265 | * |
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| 266 | * @return CartItem |
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| 267 | * |
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| 268 | * @throws Exceptions\InvalidPrice |
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| 269 | * @throws Exceptions\InvalidQuantity |
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| 270 | */ |
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| 271 | public function updateItem($itemHash, $key, $value) |
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| 272 | { |
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| 273 | if (empty($item = $this->getItem($itemHash)) === false) { |
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| 274 | $item->$key = $value; |
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| 275 | } |
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| 276 | |||
| 277 | $item->generateHash(); |
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| 278 | |||
| 279 | return $item; |
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| 280 | } |
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| 281 | |||
| 282 | /** |
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| 283 | * Removes a CartItem based on the itemHash |
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| 284 | * |
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| 285 | * @param $itemHash |
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| 286 | */ |
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| 287 | public function removeItem($itemHash) |
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| 288 | { |
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| 289 | foreach ($this->cart->items as $itemKey => $item) { |
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| 290 | if ($item->getHash() == $itemHash) { |
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| 291 | unset($this->cart->items[$itemKey]); |
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| 292 | break; |
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| 293 | } |
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| 294 | } |
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| 295 | |||
| 296 | $this->events->fire('laracart.removeItem', $itemHash); |
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| 297 | } |
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| 298 | |||
| 299 | /** |
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| 300 | * Empties the carts items |
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| 301 | */ |
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| 302 | public function emptyCart() |
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| 303 | { |
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| 304 | unset($this->cart->items); |
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| 305 | |||
| 306 | $this->update(); |
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| 307 | |||
| 308 | $this->events->fire('laracart.empty', $this->cart->instance); |
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| 309 | } |
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| 310 | |||
| 311 | /** |
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| 312 | * Completely destroys cart and anything associated with it |
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| 313 | */ |
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| 314 | public function destroyCart() |
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| 315 | { |
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| 316 | $instance = $this->cart->instance; |
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| 317 | |||
| 318 | $this->session->forget(config('laracart.cache_prefix', 'laracart') . '.' . $instance); |
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| 319 | |||
| 320 | $this->setInstance('default'); |
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| 321 | |||
| 322 | $this->events->fire('laracart.destroy', $instance); |
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| 323 | } |
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| 324 | |||
| 325 | /** |
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| 326 | * Gets the coupons for the current cart |
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| 327 | * |
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| 328 | * @return array |
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| 329 | */ |
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| 330 | public function getCoupons() |
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| 331 | { |
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| 332 | return $this->cart->coupons; |
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| 333 | } |
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| 334 | |||
| 335 | /** |
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| 336 | * Finds a specific coupon in the cart |
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| 337 | * |
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| 338 | * @param $code |
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| 339 | * @return mixed |
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| 340 | */ |
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| 341 | public function findCoupon($code) |
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| 342 | { |
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| 343 | return array_get($this->cart->coupons, $code); |
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| 344 | } |
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| 345 | |||
| 346 | /** |
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| 347 | * Applies a coupon to the cart |
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| 348 | * |
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| 349 | * @param CouponContract $coupon |
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| 350 | */ |
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| 351 | public function addCoupon(CouponContract $coupon) |
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| 361 | |||
| 362 | /** |
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| 363 | * Removes a coupon in the cart |
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| 364 | * |
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| 365 | * @param $code |
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| 366 | */ |
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| 367 | public function removeCoupon($code) |
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| 368 | { |
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| 369 | foreach ($this->getItems() as $item) { |
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| 370 | if (isset($item->code) && $item->code == $code) { |
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| 371 | $item->code = null; |
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| 372 | $item->discount = null; |
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| 373 | $item->couponInfo = []; |
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| 374 | } |
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| 375 | } |
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| 376 | |||
| 377 | array_forget($this->cart->coupons, $code); |
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| 378 | |||
| 381 | |||
| 382 | /** |
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| 383 | * Gets a speific fee from the fees array |
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| 384 | * |
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| 385 | * @param $name |
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| 386 | * |
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| 387 | * @return mixed |
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| 388 | */ |
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| 389 | public function getFee($name) |
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| 393 | |||
| 394 | /** |
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| 395 | * Allows to charge for additional fees that may or may not be taxable |
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| 396 | * ex - service fee , delivery fee, tips |
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| 397 | * |
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| 398 | * @param $name |
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| 399 | * @param $amount |
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| 400 | * @param bool|false $taxable |
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| 401 | * @param array $options |
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| 402 | */ |
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| 403 | public function addFee($name, $amount, $taxable = false, Array $options = []) |
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| 409 | |||
| 410 | /** |
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| 411 | * Reemoves a fee from the fee array |
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| 412 | * |
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| 413 | * @param $name |
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| 414 | */ |
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| 415 | public function removeFee($name) |
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| 421 | |||
| 422 | /** |
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| 423 | * Gets the total tax for the cart |
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| 424 | * |
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| 425 | * @param bool|true $format |
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| 426 | * |
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| 427 | * @return string |
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| 428 | */ |
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| 429 | public function taxTotal($format = true) |
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| 453 | |||
| 454 | /** |
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| 455 | * Gets the total of the cart with or without tax |
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| 456 | * |
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| 457 | * @param boolean $format |
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| 458 | * @param boolean $withDiscount |
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| 459 | * |
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| 460 | * @return string |
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| 461 | */ |
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| 462 | public function total($format = true, $withDiscount = true) |
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| 474 | |||
| 475 | /** |
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| 476 | * Gets the subtotal of the cart with or without tax |
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| 477 | * |
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| 478 | * @param boolean $format |
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| 479 | * @param boolean $withDiscount |
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| 480 | * |
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| 481 | * @return string |
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| 482 | */ |
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| 483 | public function subTotal($format = true, $withDiscount = true) |
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| 495 | |||
| 496 | /** |
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| 497 | * Get the count based on qty, or number of unique items |
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| 498 | * |
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| 499 | * @param bool $withItemQty |
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| 500 | * |
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| 501 | * @return int |
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| 502 | */ |
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| 503 | public function count($withItemQty = true) |
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| 517 | |||
| 518 | /** |
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| 519 | * |
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| 520 | * Formats the number into a money format based on the locale and international formats |
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| 521 | * |
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| 522 | * @param $number |
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| 523 | * @param $locale |
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| 524 | * @param $internationalFormat |
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| 525 | * @param $format |
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| 526 | * |
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| 527 | * @return string |
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| 528 | */ |
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| 529 | public static function formatMoney($number, $locale = null, $internationalFormat = null, $format = true) |
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| 545 | |||
| 546 | /** |
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| 547 | * Gets all the fee totals |
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| 548 | * |
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| 549 | * @param boolean $format |
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| 550 | * |
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| 551 | * @return string |
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| 552 | */ |
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| 553 | public function feeTotals($format = true) |
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| 566 | |||
| 567 | /** |
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| 568 | * Gets all the fees on the cart object |
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| 569 | * |
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| 570 | * @return mixed |
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| 571 | */ |
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| 572 | public function getFees() |
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| 576 | |||
| 577 | /** |
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| 578 | * Gets the total amount discounted |
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| 579 | * |
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| 580 | * @param boolean $format |
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| 581 | * |
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| 582 | * @return string |
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| 583 | */ |
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| 584 | public function totalDiscount($format = true) |
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| 596 | } |
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| 597 |
Since your code implements the magic setter
_set, this function will be called for any write access on an undefined variable. You can add the@propertyannotation to your class or interface to document the existence of this variable.Since the property has write access only, you can use the @property-write annotation instead.
Of course, you may also just have mistyped another name, in which case you should fix the error.
See also the PhpDoc documentation for @property.