Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Html 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 Html, and based on these observations, apply Extract Interface, too.
| 1 | <?php namespace Anomaly\Streams\Platform\Support; |
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| 12 | class Html |
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| 13 | { |
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| 14 | use Macroable, Componentable { |
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| 15 | Macroable::__call as macroCall; |
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| 16 | Componentable::__call as componentCall; |
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| 17 | } |
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| 18 | |||
| 19 | /** |
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| 20 | * The HTML builder instance. |
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| 21 | * |
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| 22 | * @var \Collective\Html\HtmlBuilder |
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| 23 | */ |
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| 24 | protected $html; |
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| 25 | |||
| 26 | /** |
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| 27 | * The URL generator instance. |
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| 28 | * |
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| 29 | * @var \Illuminate\Contracts\Routing\UrlGenerator |
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| 30 | */ |
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| 31 | protected $url; |
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| 32 | |||
| 33 | /** |
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| 34 | * The View factory instance. |
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| 35 | * |
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| 36 | * @var \Illuminate\Contracts\View\Factory |
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| 37 | */ |
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| 38 | protected $view; |
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| 39 | |||
| 40 | /** |
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| 41 | * The CSRF token used by the form builder. |
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| 42 | * |
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| 43 | * @var string |
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| 44 | */ |
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| 45 | protected $csrfToken; |
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| 46 | |||
| 47 | /** |
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| 48 | * The session store implementation. |
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| 49 | * |
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| 50 | * @var \Illuminate\Session\SessionInterface |
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| 51 | */ |
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| 52 | protected $session; |
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| 53 | |||
| 54 | /** |
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| 55 | * The current model instance for the form. |
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| 56 | * |
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| 57 | * @var mixed |
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| 58 | */ |
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| 59 | protected $model; |
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| 60 | |||
| 61 | /** |
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| 62 | * An array of label names we've created. |
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| 63 | * |
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| 64 | * @var array |
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| 65 | */ |
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| 66 | protected $labels = []; |
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| 67 | |||
| 68 | /** |
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| 69 | * The reserved form open attributes. |
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| 70 | * |
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| 71 | * @var array |
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| 72 | */ |
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| 73 | protected $reserved = ['method', 'url', 'route', 'action', 'files']; |
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| 74 | |||
| 75 | /** |
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| 76 | * The form methods that should be spoofed, in uppercase. |
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| 77 | * |
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| 78 | * @var array |
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| 79 | */ |
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| 80 | protected $spoofedMethods = ['DELETE', 'PATCH', 'PUT']; |
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| 81 | |||
| 82 | /** |
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| 83 | * The types of inputs to not fill values on by default. |
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| 84 | * |
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| 85 | * @var array |
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| 86 | */ |
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| 87 | protected $skipValueTypes = ['file', 'password', 'checkbox', 'radio']; |
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| 88 | |||
| 89 | /** |
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| 90 | * Create a new form builder instance. |
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| 91 | * |
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| 92 | * @param \Collective\Html\HtmlBuilder $html |
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| 93 | * @param \Illuminate\Contracts\Routing\UrlGenerator $url |
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| 94 | * @param \Illuminate\Contracts\View\Factory $view |
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| 95 | * @param string $csrfToken |
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| 96 | */ |
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| 97 | public function __construct(HtmlBuilder $html, UrlGenerator $url, Factory $view, $csrfToken) |
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| 104 | |||
| 105 | /** |
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| 106 | * Open up a new HTML form. |
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| 107 | * |
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| 108 | * @param array $options |
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| 109 | * |
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| 110 | * @return \Illuminate\Support\HtmlString |
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| 111 | */ |
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| 112 | public function open(array $options = []) |
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| 150 | |||
| 151 | /** |
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| 152 | * Create a new model based form builder. |
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| 153 | * |
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| 154 | * @param mixed $model |
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| 155 | * @param array $options |
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| 156 | * |
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| 157 | * @return \Illuminate\Support\HtmlString |
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| 158 | */ |
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| 159 | public function model($model, array $options = []) |
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| 165 | |||
| 166 | /** |
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| 167 | * Set the model instance on the form builder. |
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| 168 | * |
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| 169 | * @param mixed $model |
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| 170 | * |
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| 171 | * @return void |
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| 172 | */ |
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| 173 | public function setModel($model) |
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| 177 | |||
| 178 | /** |
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| 179 | * Close the current form. |
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| 180 | * |
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| 181 | * @return string |
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| 182 | */ |
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| 183 | public function close() |
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| 191 | |||
| 192 | /** |
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| 193 | * Generate a hidden field with the current CSRF token. |
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| 194 | * |
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| 195 | * @return string |
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| 196 | */ |
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| 197 | public function token() |
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| 203 | |||
| 204 | /** |
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| 205 | * Create a form label element. |
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| 206 | * |
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| 207 | * @param string $name |
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| 208 | * @param string $value |
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| 209 | * @param array $options |
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| 210 | * @param bool $escape_html |
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| 211 | * |
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| 212 | * @return \Illuminate\Support\HtmlString |
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| 213 | */ |
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| 214 | public function label($name, $value = null, $options = [], $escape_html = true) |
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| 228 | |||
| 229 | /** |
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| 230 | * Format the label value. |
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| 231 | * |
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| 232 | * @param string $name |
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| 233 | * @param string|null $value |
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| 234 | * |
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| 235 | * @return string |
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| 236 | */ |
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| 237 | protected function formatLabel($name, $value) |
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| 241 | |||
| 242 | /** |
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| 243 | * Create a form input field. |
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| 244 | * |
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| 245 | * @param string $type |
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| 246 | * @param string $name |
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| 247 | * @param string $value |
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| 248 | * @param array $options |
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| 249 | * |
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| 250 | * @return \Illuminate\Support\HtmlString |
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| 251 | */ |
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| 252 | public function input($type, $name, $value = null, $options = []) |
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| 276 | |||
| 277 | /** |
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| 278 | * Create a text input field. |
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| 279 | * |
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| 280 | * @param string $name |
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| 281 | * @param string $value |
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| 282 | * @param array $options |
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| 283 | * |
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| 284 | * @return \Illuminate\Support\HtmlString |
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| 285 | */ |
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| 286 | public function text($name, $value = null, $options = []) |
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| 290 | |||
| 291 | /** |
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| 292 | * Create a password input field. |
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| 293 | * |
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| 294 | * @param string $name |
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| 295 | * @param array $options |
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| 296 | * |
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| 297 | * @return \Illuminate\Support\HtmlString |
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| 298 | */ |
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| 299 | public function password($name, $options = []) |
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| 303 | |||
| 304 | /** |
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| 305 | * Create a hidden input field. |
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| 306 | * |
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| 307 | * @param string $name |
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| 308 | * @param string $value |
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| 309 | * @param array $options |
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| 310 | * |
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| 311 | * @return \Illuminate\Support\HtmlString |
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| 312 | */ |
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| 313 | public function hidden($name, $value = null, $options = []) |
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| 317 | |||
| 318 | /** |
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| 319 | * Create an e-mail input field. |
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| 320 | * |
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| 321 | * @param string $name |
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| 322 | * @param string $value |
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| 323 | * @param array $options |
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| 324 | * |
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| 325 | * @return \Illuminate\Support\HtmlString |
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| 326 | */ |
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| 327 | public function email($name, $value = null, $options = []) |
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| 331 | |||
| 332 | /** |
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| 333 | * Create a tel input field. |
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| 334 | * |
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| 335 | * @param string $name |
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| 336 | * @param string $value |
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| 337 | * @param array $options |
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| 338 | * |
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| 339 | * @return \Illuminate\Support\HtmlString |
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| 340 | */ |
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| 341 | public function tel($name, $value = null, $options = []) |
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| 345 | |||
| 346 | /** |
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| 347 | * Create a number input field. |
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| 348 | * |
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| 349 | * @param string $name |
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| 350 | * @param string $value |
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| 351 | * @param array $options |
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| 352 | * |
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| 353 | * @return \Illuminate\Support\HtmlString |
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| 354 | */ |
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| 355 | public function number($name, $value = null, $options = []) |
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| 359 | |||
| 360 | /** |
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| 361 | * Create a date input field. |
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| 362 | * |
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| 363 | * @param string $name |
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| 364 | * @param string $value |
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| 365 | * @param array $options |
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| 366 | * |
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| 367 | * @return \Illuminate\Support\HtmlString |
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| 368 | */ |
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| 369 | View Code Duplication | public function date($name, $value = null, $options = []) |
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| 377 | |||
| 378 | /** |
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| 379 | * Create a datetime input field. |
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| 380 | * |
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| 381 | * @param string $name |
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| 382 | * @param string $value |
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| 383 | * @param array $options |
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| 384 | * |
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| 385 | * @return \Illuminate\Support\HtmlString |
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| 386 | */ |
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| 387 | View Code Duplication | public function datetime($name, $value = null, $options = []) |
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| 395 | |||
| 396 | /** |
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| 397 | * Create a datetime-local input field. |
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| 398 | * |
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| 399 | * @param string $name |
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| 400 | * @param string $value |
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| 401 | * @param array $options |
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| 402 | * |
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| 403 | * @return \Illuminate\Support\HtmlString |
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| 404 | */ |
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| 405 | View Code Duplication | public function datetimeLocal($name, $value = null, $options = []) |
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| 413 | |||
| 414 | /** |
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| 415 | * Create a time input field. |
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| 416 | * |
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| 417 | * @param string $name |
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| 418 | * @param string $value |
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| 419 | * @param array $options |
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| 420 | * |
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| 421 | * @return \Illuminate\Support\HtmlString |
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| 422 | */ |
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| 423 | public function time($name, $value = null, $options = []) |
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| 427 | |||
| 428 | /** |
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| 429 | * Create a url input field. |
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| 430 | * |
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| 431 | * @param string $name |
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| 432 | * @param string $value |
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| 433 | * @param array $options |
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| 434 | * |
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| 435 | * @return \Illuminate\Support\HtmlString |
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| 436 | */ |
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| 437 | public function url($name, $value = null, $options = []) |
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| 441 | |||
| 442 | /** |
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| 443 | * Create a file input field. |
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| 444 | * |
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| 445 | * @param string $name |
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| 446 | * @param array $options |
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| 447 | * |
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| 448 | * @return \Illuminate\Support\HtmlString |
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| 449 | */ |
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| 450 | public function file($name, $options = []) |
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| 454 | |||
| 455 | /** |
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| 456 | * Create a textarea input field. |
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| 457 | * |
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| 458 | * @param string $name |
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| 459 | * @param string $value |
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| 460 | * @param array $options |
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| 461 | * |
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| 462 | * @return \Illuminate\Support\HtmlString |
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| 463 | */ |
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| 464 | public function textarea($name, $value = null, $options = []) |
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| 488 | |||
| 489 | /** |
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| 490 | * Set the text area size on the attributes. |
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| 491 | * |
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| 492 | * @param array $options |
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| 493 | * |
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| 494 | * @return array |
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| 495 | */ |
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| 496 | protected function setTextAreaSize($options) |
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| 511 | |||
| 512 | /** |
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| 513 | * Set the text area size using the quick "size" attribute. |
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| 514 | * |
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| 515 | * @param array $options |
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| 516 | * |
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| 517 | * @return array |
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| 518 | */ |
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| 519 | protected function setQuickTextAreaSize($options) |
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| 525 | |||
| 526 | /** |
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| 527 | * Create a select box field. |
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| 528 | * |
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| 529 | * @param string $name |
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| 530 | * @param array $list |
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| 531 | * @param string $selected |
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| 532 | * @param array $options |
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| 533 | * |
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| 534 | * @return \Illuminate\Support\HtmlString |
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| 535 | */ |
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| 536 | public function select($name, $list = [], $selected = null, $options = []) |
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| 572 | |||
| 573 | /** |
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| 574 | * Create a select range field. |
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| 575 | * |
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| 576 | * @param string $name |
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| 577 | * @param string $begin |
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| 578 | * @param string $end |
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| 579 | * @param string $selected |
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| 580 | * @param array $options |
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| 581 | * |
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| 582 | * @return \Illuminate\Support\HtmlString |
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| 583 | */ |
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| 584 | public function selectRange($name, $begin, $end, $selected = null, $options = []) |
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| 590 | |||
| 591 | /** |
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| 592 | * Create a select year field. |
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| 593 | * |
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| 594 | * @param string $name |
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| 595 | * @param string $begin |
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| 596 | * @param string $end |
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| 597 | * @param string $selected |
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| 598 | * @param array $options |
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| 599 | * |
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| 600 | * @return mixed |
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| 601 | */ |
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| 602 | public function selectYear() |
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| 606 | |||
| 607 | /** |
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| 608 | * Create a select month field. |
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| 609 | * |
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| 610 | * @param string $name |
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| 611 | * @param string $selected |
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| 612 | * @param array $options |
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| 613 | * @param string $format |
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| 614 | * |
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| 615 | * @return \Illuminate\Support\HtmlString |
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| 616 | */ |
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| 617 | public function selectMonth($name, $selected = null, $options = [], $format = '%B') |
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| 627 | |||
| 628 | /** |
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| 629 | * Get the select option for the given value. |
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| 630 | * |
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| 631 | * @param string $display |
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| 632 | * @param string $value |
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| 633 | * @param string $selected |
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| 634 | * |
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| 635 | * @return \Illuminate\Support\HtmlString |
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| 636 | */ |
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| 637 | public function getSelectOption($display, $value, $selected) |
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| 645 | |||
| 646 | /** |
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| 647 | * Create an option group form element. |
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| 648 | * |
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| 649 | * @param array $list |
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| 650 | * @param string $label |
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| 651 | * @param string $selected |
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| 652 | * |
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| 653 | * @return \Illuminate\Support\HtmlString |
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| 654 | */ |
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| 655 | protected function optionGroup($list, $label, $selected) |
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| 665 | |||
| 666 | /** |
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| 667 | * Create a select element option. |
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| 668 | * |
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| 669 | * @param string $display |
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| 670 | * @param string $value |
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| 671 | * @param string $selected |
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| 672 | * |
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| 673 | * @return \Illuminate\Support\HtmlString |
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| 674 | */ |
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| 675 | protected function option($display, $value, $selected) |
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| 683 | |||
| 684 | /** |
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| 685 | * Create a placeholder select element option. |
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| 686 | * |
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| 687 | * @param $display |
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| 688 | * @param $selected |
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| 689 | * |
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| 690 | * @return \Illuminate\Support\HtmlString |
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| 691 | */ |
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| 692 | protected function placeholderOption($display, $selected) |
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| 701 | |||
| 702 | /** |
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| 703 | * Determine if the value is selected. |
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| 704 | * |
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| 705 | * @param string $value |
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| 706 | * @param string $selected |
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| 707 | * |
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| 708 | * @return null|string |
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| 709 | */ |
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| 710 | protected function getSelectedValue($value, $selected) |
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| 718 | |||
| 719 | /** |
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| 720 | * Create a checkbox input field. |
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| 721 | * |
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| 722 | * @param string $name |
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| 723 | * @param mixed $value |
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| 724 | * @param bool $checked |
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| 725 | * @param array $options |
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| 726 | * |
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| 727 | * @return \Illuminate\Support\HtmlString |
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| 728 | */ |
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| 729 | public function checkbox($name, $value = 1, $checked = null, $options = []) |
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| 733 | |||
| 734 | /** |
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| 735 | * Create a radio button input field. |
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| 736 | * |
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| 737 | * @param string $name |
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| 738 | * @param mixed $value |
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| 739 | * @param bool $checked |
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| 740 | * @param array $options |
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| 741 | * |
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| 742 | * @return \Illuminate\Support\HtmlString |
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| 743 | */ |
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| 744 | public function radio($name, $value = null, $checked = null, $options = []) |
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| 752 | |||
| 753 | /** |
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| 754 | * Create a checkable input field. |
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| 755 | * |
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| 756 | * @param string $type |
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| 757 | * @param string $name |
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| 758 | * @param mixed $value |
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| 759 | * @param bool $checked |
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| 760 | * @param array $options |
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| 761 | * |
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| 762 | * @return \Illuminate\Support\HtmlString |
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| 763 | */ |
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| 764 | protected function checkable($type, $name, $value, $checked, $options) |
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| 774 | |||
| 775 | /** |
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| 776 | * Get the check state for a checkable input. |
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| 777 | * |
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| 778 | * @param string $type |
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| 779 | * @param string $name |
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| 780 | * @param mixed $value |
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| 781 | * @param bool $checked |
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| 782 | * |
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| 783 | * @return bool |
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| 784 | */ |
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| 785 | protected function getCheckedState($type, $name, $value, $checked) |
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| 798 | |||
| 799 | /** |
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| 800 | * Get the check state for a checkbox input. |
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| 801 | * |
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| 802 | * @param string $name |
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| 803 | * @param mixed $value |
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| 804 | * @param bool $checked |
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| 805 | * |
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| 806 | * @return bool |
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| 807 | */ |
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| 808 | protected function getCheckboxCheckedState($name, $value, $checked) |
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| 828 | |||
| 829 | /** |
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| 830 | * Get the check state for a radio input. |
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| 831 | * |
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| 832 | * @param string $name |
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| 833 | * @param mixed $value |
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| 834 | * @param bool $checked |
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| 835 | * |
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| 836 | * @return bool |
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| 837 | */ |
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| 838 | protected function getRadioCheckedState($name, $value, $checked) |
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| 846 | |||
| 847 | /** |
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| 848 | * Determine if old input or model input exists for a key. |
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| 849 | * |
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| 850 | * @param string $name |
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| 851 | * |
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| 852 | * @return bool |
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| 853 | */ |
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| 854 | protected function missingOldAndModel($name) |
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| 858 | |||
| 859 | /** |
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| 860 | * Create a HTML reset input element. |
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| 861 | * |
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| 862 | * @param string $value |
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| 863 | * @param array $attributes |
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| 864 | * |
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| 865 | * @return \Illuminate\Support\HtmlString |
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| 866 | */ |
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| 867 | public function reset($value, $attributes = []) |
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| 871 | |||
| 872 | /** |
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| 873 | * Create a HTML image input element. |
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| 874 | * |
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| 875 | * @param string $url |
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| 876 | * @param string $name |
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| 877 | * @param array $attributes |
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| 878 | * |
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| 879 | * @return \Illuminate\Support\HtmlString |
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| 880 | */ |
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| 881 | public function image($url, $name = null, $attributes = []) |
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| 887 | |||
| 888 | /** |
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| 889 | * Create a color input field. |
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| 890 | * |
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| 891 | * @param string $name |
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| 892 | * @param string $value |
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| 893 | * @param array $options |
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| 894 | * |
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| 895 | * @return \Illuminate\Support\HtmlString |
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| 896 | */ |
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| 897 | public function color($name, $value = null, $options = []) |
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| 901 | |||
| 902 | /** |
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| 903 | * Create a submit button element. |
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| 904 | * |
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| 905 | * @param string $value |
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| 906 | * @param array $options |
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| 907 | * |
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| 908 | * @return \Illuminate\Support\HtmlString |
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| 909 | */ |
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| 910 | public function submit($value = null, $options = []) |
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| 914 | |||
| 915 | /** |
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| 916 | * Create a button element. |
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| 917 | * |
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| 918 | * @param string $value |
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| 919 | * @param array $options |
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| 920 | * |
||
| 921 | * @return \Illuminate\Support\HtmlString |
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| 922 | */ |
||
| 923 | public function button($value = null, $options = []) |
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| 931 | |||
| 932 | /** |
||
| 933 | * Parse the form action method. |
||
| 934 | * |
||
| 935 | * @param string $method |
||
| 936 | * |
||
| 937 | * @return string |
||
| 938 | */ |
||
| 939 | protected function getMethod($method) |
||
| 945 | |||
| 946 | /** |
||
| 947 | * Get the form action from the options. |
||
| 948 | * |
||
| 949 | * @param array $options |
||
| 950 | * |
||
| 951 | * @return string |
||
| 952 | */ |
||
| 953 | protected function getAction(array $options) |
||
| 975 | |||
| 976 | /** |
||
| 977 | * Get the action for a "url" option. |
||
| 978 | * |
||
| 979 | * @param array|string $options |
||
| 980 | * |
||
| 981 | * @return string |
||
| 982 | */ |
||
| 983 | protected function getUrlAction($options) |
||
| 991 | |||
| 992 | /** |
||
| 993 | * Get the action for a "route" option. |
||
| 994 | * |
||
| 995 | * @param array|string $options |
||
| 996 | * |
||
| 997 | * @return string |
||
| 998 | */ |
||
| 999 | View Code Duplication | protected function getRouteAction($options) |
|
| 1007 | |||
| 1008 | /** |
||
| 1009 | * Get the action for an "action" option. |
||
| 1010 | * |
||
| 1011 | * @param array|string $options |
||
| 1012 | * |
||
| 1013 | * @return string |
||
| 1014 | */ |
||
| 1015 | View Code Duplication | protected function getControllerAction($options) |
|
| 1023 | |||
| 1024 | /** |
||
| 1025 | * Get the form appendage for the given method. |
||
| 1026 | * |
||
| 1027 | * @param string $method |
||
| 1028 | * |
||
| 1029 | * @return string |
||
| 1030 | */ |
||
| 1031 | protected function getAppendage($method) |
||
| 1051 | |||
| 1052 | /** |
||
| 1053 | * Get the ID attribute for a field name. |
||
| 1054 | * |
||
| 1055 | * @param string $name |
||
| 1056 | * @param array $attributes |
||
| 1057 | * |
||
| 1058 | * @return string |
||
| 1059 | */ |
||
| 1060 | public function getIdAttribute($name, $attributes) |
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| 1070 | |||
| 1071 | /** |
||
| 1072 | * Get the value that should be assigned to the field. |
||
| 1073 | * |
||
| 1074 | * @param string $name |
||
| 1075 | * @param string $value |
||
| 1076 | * |
||
| 1077 | * @return mixed |
||
| 1078 | */ |
||
| 1079 | public function getValueAttribute($name, $value = null) |
||
| 1097 | |||
| 1098 | /** |
||
| 1099 | * Get the model value that should be assigned to the field. |
||
| 1100 | * |
||
| 1101 | * @param string $name |
||
| 1102 | * |
||
| 1103 | * @return mixed |
||
| 1104 | */ |
||
| 1105 | protected function getModelValueAttribute($name) |
||
| 1113 | |||
| 1114 | /** |
||
| 1115 | * Get a value from the session's old input. |
||
| 1116 | * |
||
| 1117 | * @param string $name |
||
| 1118 | * |
||
| 1119 | * @return mixed |
||
| 1120 | */ |
||
| 1121 | public function old($name) |
||
| 1127 | |||
| 1128 | /** |
||
| 1129 | * Determine if the old input is empty. |
||
| 1130 | * |
||
| 1131 | * @return bool |
||
| 1132 | */ |
||
| 1133 | public function oldInputIsEmpty() |
||
| 1137 | |||
| 1138 | /** |
||
| 1139 | * Transform key from array to dot syntax. |
||
| 1140 | * |
||
| 1141 | * @param string $key |
||
| 1142 | * |
||
| 1143 | * @return mixed |
||
| 1144 | */ |
||
| 1145 | protected function transformKey($key) |
||
| 1149 | |||
| 1150 | /** |
||
| 1151 | * Transform the string to an Html serializable object |
||
| 1152 | * |
||
| 1153 | * @param $html |
||
| 1154 | * |
||
| 1155 | * @return \Illuminate\Support\HtmlString |
||
| 1156 | */ |
||
| 1157 | protected function toHtmlString($html) |
||
| 1161 | |||
| 1162 | /** |
||
| 1163 | * Get the session store implementation. |
||
| 1164 | * |
||
| 1165 | * @return \Illuminate\Session\SessionInterface $session |
||
| 1166 | */ |
||
| 1167 | public function getSessionStore() |
||
| 1171 | |||
| 1172 | /** |
||
| 1173 | * Set the session store implementation. |
||
| 1174 | * |
||
| 1175 | * @param \Illuminate\Session\SessionInterface $session |
||
| 1176 | * |
||
| 1177 | * @return $this |
||
| 1178 | */ |
||
| 1179 | public function setSessionStore(SessionInterface $session) |
||
| 1185 | |||
| 1186 | /** |
||
| 1187 | * Dynamically handle calls to the class. |
||
| 1188 | * |
||
| 1189 | * @param string $method |
||
| 1190 | * @param array $parameters |
||
| 1191 | * |
||
| 1192 | * @return \Illuminate\Contracts\View\View|mixed |
||
| 1193 | * |
||
| 1194 | * @throws \BadMethodCallException |
||
| 1195 | */ |
||
| 1196 | public function __call($method, $parameters) |
||
| 1212 | } |
||
| 1213 |
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: