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 |
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| 29 | class Html |
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| 30 | { |
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| 31 | use Macroable; |
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| 32 | |||
| 33 | const HTML_DATE_FORMAT = 'Y-m-d'; |
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| 34 | const HTML_TIME_FORMAT = 'H:i:s'; |
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| 35 | |||
| 36 | /** @var \Illuminate\Http\Request */ |
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| 37 | protected $request; |
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| 38 | |||
| 39 | /** @var \ArrayAccess|array */ |
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| 40 | protected $model; |
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| 41 | |||
| 42 | public function __construct(Request $request) |
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| 43 | { |
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| 44 | $this->request = $request; |
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| 45 | } |
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| 46 | |||
| 47 | /** |
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| 48 | * @param string|null $href |
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| 49 | * @param string|null $text |
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| 50 | * |
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| 51 | * @return \Spatie\Html\Elements\A |
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| 52 | */ |
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| 53 | public function a($href = null, $contents = null) |
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| 54 | { |
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| 55 | return A::create() |
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| 56 | ->attributeIf($href, 'href', $href) |
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| 57 | ->html($contents); |
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| 58 | } |
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| 59 | |||
| 60 | /** |
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| 61 | * @param string|null $href |
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| 62 | * @param string|null $text |
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| 63 | * |
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| 64 | * @return \Spatie\Html\Elements\I |
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| 65 | */ |
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| 66 | public function i($contents = null) |
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| 67 | { |
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| 68 | return I::create() |
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| 69 | ->html($contents); |
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| 70 | } |
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| 71 | |||
| 72 | /** |
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| 73 | * @param string|null $type |
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| 74 | * @param string|null $text |
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| 75 | * |
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| 76 | * @return \Spatie\Html\Elements\Button |
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| 77 | */ |
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| 78 | public function button($contents = null, $type = null, $name = null) |
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| 79 | { |
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| 80 | return Button::create() |
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| 81 | ->attributeIf($type, 'type', $type) |
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| 82 | ->attributeIf($name, 'name', $this->fieldName($name)) |
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| 83 | ->html($contents); |
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| 84 | } |
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| 85 | |||
| 86 | /** |
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| 87 | * @param \Illuminate\Support\Collection|iterable|string $classes |
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| 88 | * |
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| 89 | * @return \Illuminate\Contracts\Support\Htmlable |
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| 90 | */ |
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| 91 | public function class($classes): Htmlable |
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| 92 | { |
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| 93 | if ($classes instanceof Collection) { |
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| 94 | $classes = $classes->toArray(); |
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| 95 | } |
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| 96 | |||
| 97 | $attributes = new Attributes(); |
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| 98 | $attributes->addClass($classes); |
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| 99 | |||
| 100 | return new HtmlString( |
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| 101 | $attributes->render() |
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| 102 | ); |
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| 103 | } |
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| 104 | |||
| 105 | /** |
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| 106 | * @param string|null $name |
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| 107 | * @param bool $checked |
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| 108 | * @param string|null $value |
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| 109 | * |
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| 110 | * @return \Spatie\Html\Elements\Input |
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| 111 | */ |
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| 112 | public function checkbox($name = null, $checked = null, $value = '1') |
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| 113 | { |
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| 114 | return $this->input('checkbox', $name, $value) |
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| 115 | ->attributeIf(!is_null($value), 'value', $value) |
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| 116 | ->attributeIf((bool) $this->old($name, $checked), 'checked'); |
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| 117 | } |
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| 118 | |||
| 119 | /** |
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| 120 | * @param \Spatie\Html\HtmlElement|string|null $contents |
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| 121 | * |
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| 122 | * @return \Spatie\Html\Elements\Div |
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| 123 | */ |
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| 124 | public function div($contents = null) |
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| 125 | { |
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| 126 | return Div::create()->children($contents); |
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| 127 | } |
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| 128 | |||
| 129 | /** |
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| 130 | * @param string|null $name |
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| 131 | * @param string|null $value |
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| 132 | * |
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| 133 | * @return \Spatie\Html\Elements\Input |
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| 134 | */ |
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| 135 | public function email($name = null, $value = null) |
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| 136 | { |
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| 137 | return $this->input('email', $name, $value); |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * @param string|null $name |
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| 142 | * @param string|null $value |
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| 143 | * @param bool $format |
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| 144 | * |
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| 145 | * @return \Spatie\Html\Elements\Input |
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| 146 | */ |
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| 147 | View Code Duplication | public function date($name = '', $value = null, $format = true) |
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| 148 | { |
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| 149 | $element = $this->input('date', $name, $value); |
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| 150 | |||
| 151 | if (!$format || empty($element->getAttribute('value'))) { |
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| 152 | return $element; |
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| 153 | } |
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| 154 | |||
| 155 | return $element->value($this->formatDateTime($element->getAttribute('value'), self::HTML_DATE_FORMAT)); |
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| 156 | } |
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| 157 | |||
| 158 | /** |
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| 159 | * @param string|null $name |
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| 160 | * @param string|null $value |
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| 161 | * @param string|null $min |
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| 162 | * @param string|null $max |
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| 163 | * @param string|null $step |
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| 164 | * |
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| 165 | * @return \Spatie\Html\Elements\Input |
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| 166 | */ |
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| 167 | public function range($name = '', $value = '', $min = null, $max = null, $step = null) |
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| 168 | { |
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| 169 | return $this->input('range', $name, $value) |
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| 170 | ->attributeIfNotNull($min, 'min', $min) |
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| 171 | ->attributeIfNotNull($max, 'max', $max) |
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| 172 | ->attributeIfNotNull($step, 'step', $step); |
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| 173 | } |
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| 174 | |||
| 175 | /** |
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| 176 | * @param string|null $name |
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| 177 | * @param string|null $value |
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| 178 | * @param bool $format |
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| 179 | * |
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| 180 | * @return \Spatie\Html\Elements\Input |
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| 181 | */ |
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| 182 | View Code Duplication | public function time($name = '', $value = null, $format = true) |
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| 183 | { |
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| 184 | $element = $this->input('time', $name, $value); |
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| 185 | |||
| 186 | if (!$format || empty($element->getAttribute('value'))) { |
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| 187 | return $element; |
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| 188 | } |
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| 189 | |||
| 190 | return $element->value($this->formatDateTime($element->getAttribute('value'), self::HTML_TIME_FORMAT)); |
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| 191 | } |
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| 192 | |||
| 193 | /** |
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| 194 | * @param string $tag |
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| 195 | * |
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| 196 | * @return \Spatie\Html\Elements\Element |
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| 197 | */ |
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| 198 | public function element($tag) |
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| 199 | { |
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| 200 | return Element::withTag($tag); |
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| 201 | } |
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| 202 | |||
| 203 | /** |
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| 204 | * @param string|null $type |
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| 205 | * @param string|null $name |
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| 206 | * @param string|null $value |
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| 207 | * |
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| 208 | * @return \Spatie\Html\Elements\Input |
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| 209 | */ |
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| 210 | public function input($type = null, $name = null, $value = null) |
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| 211 | { |
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| 212 | $hasValue = $name && ($type !== 'password' && !is_null($this->old($name, $value)) || !is_null($value)); |
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| 213 | |||
| 214 | return Input::create() |
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| 215 | ->attributeIf($type, 'type', $type) |
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| 216 | ->attributeIf($name, 'name', $this->fieldName($name)) |
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| 217 | ->attributeIf($name, 'id', $this->fieldName($name)) |
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| 218 | ->attributeIf($hasValue, 'value', $this->old($name, $value)); |
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| 219 | } |
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| 220 | |||
| 221 | /** |
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| 222 | * @param \Spatie\Html\HtmlElement|string|null $legend |
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| 223 | * |
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| 224 | * @return \Spatie\Html\Elements\Fieldset |
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| 225 | */ |
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| 226 | public function fieldset($legend = null) |
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| 227 | { |
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| 228 | return $legend ? |
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| 229 | Fieldset::create()->legend($legend) : Fieldset::create(); |
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| 230 | } |
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| 231 | |||
| 232 | /** |
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| 233 | * @param string $method |
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| 234 | * @param string|null $action |
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| 235 | * |
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| 236 | * @return \Spatie\Html\Elements\Form |
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| 237 | */ |
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| 238 | public function form($method = 'POST', $action = null) |
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| 258 | |||
| 259 | /** |
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| 260 | * @param string|null $name |
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| 261 | * @param string|null $value |
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| 262 | * |
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| 263 | * @return \Spatie\Html\Elements\Input |
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| 264 | */ |
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| 265 | public function hidden($name = null, $value = null) |
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| 269 | |||
| 270 | /** |
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| 271 | * @param string|null $src |
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| 272 | * @param string|null $alt |
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| 273 | * |
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| 274 | * @return \Spatie\Html\Elements\Img |
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| 275 | */ |
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| 276 | public function img($src = null, $alt = null) |
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| 282 | |||
| 283 | /** |
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| 284 | * @param \Spatie\Html\HtmlElement|iterable|string|null $contents |
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| 285 | * @param string|null $for |
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| 286 | * |
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| 287 | * @return \Spatie\Html\Elements\Label |
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| 288 | */ |
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| 289 | public function label($contents = null, $for = null) |
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| 295 | |||
| 296 | /** |
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| 297 | * @param \Spatie\Html\HtmlElement|string|null $contents |
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| 298 | * |
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| 299 | * @return \Spatie\Html\Elements\Legend |
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| 300 | */ |
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| 301 | public function legend($contents = null) |
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| 305 | |||
| 306 | /** |
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| 307 | * @param string $email |
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| 308 | * @param string|null $text |
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| 309 | * |
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| 310 | * @return \Spatie\Html\Elements\A |
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| 311 | */ |
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| 312 | public function mailto($email, $text = null) |
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| 316 | |||
| 317 | /** |
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| 318 | * @param string|null $name |
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| 319 | * @param iterable $options |
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| 320 | * @param string|iterable|null $value |
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| 321 | * |
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| 322 | * @return \Spatie\Html\Elements\Select |
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| 323 | */ |
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| 324 | View Code Duplication | public function multiselect($name = null, $options = [], $value = null) |
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| 333 | |||
| 334 | /** |
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| 335 | * @param string|null $name |
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| 336 | * @param string|null $value |
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| 337 | * @param string|null $min |
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| 338 | * @param string|null $max |
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| 339 | * @param string|null $step |
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| 340 | * |
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| 341 | * @return \Spatie\Html\Elements\Input |
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| 342 | */ |
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| 343 | public function number($name = null, $value = null, $min = null, $max = null, $step = null) |
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| 344 | { |
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| 345 | return $this->input('number', $name, $value) |
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| 346 | ->attributeIfNotNull($min, 'min', $min) |
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| 347 | ->attributeIfNotNull($max, 'max', $max) |
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| 350 | |||
| 351 | /** |
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| 352 | * @param string|null $text |
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| 353 | * @param string|null $value |
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| 354 | * @param bool $selected |
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| 355 | * |
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| 356 | * @return \Spatie\Html\Elements\Option |
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| 357 | */ |
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| 358 | public function option($text = null, $value = null, $selected = false) |
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| 365 | |||
| 366 | /** |
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| 367 | * @param string|null $value |
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| 368 | * |
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| 369 | * @return \Spatie\Html\Elements\Input |
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| 370 | */ |
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| 371 | public function password($name = null) |
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| 375 | |||
| 376 | /** |
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| 377 | * @param string|null $name |
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| 378 | * @param bool $checked |
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| 379 | * @param string|null $value |
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| 380 | * |
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| 381 | * @return \Spatie\Html\Elements\Input |
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| 382 | */ |
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| 383 | public function radio($name = null, $checked = null, $value = null) |
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| 390 | |||
| 391 | /** |
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| 392 | * @param string|null $name |
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| 393 | * @param iterable $options |
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| 394 | * @param string|iterable|null $value |
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| 395 | * |
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| 396 | * @return \Spatie\Html\Elements\Select |
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| 397 | */ |
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| 398 | View Code Duplication | public function select($name = null, $options = [], $value = null) |
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| 406 | |||
| 407 | /** |
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| 408 | * @param \Spatie\Html\HtmlElement|string|null $contents |
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| 409 | * |
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| 410 | * @return \Spatie\Html\Elements\Span |
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| 411 | */ |
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| 412 | public function span($contents = null) |
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| 416 | |||
| 417 | /** |
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| 418 | * @param string|null $text |
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| 419 | * |
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| 420 | * @return \Spatie\Html\Elements\Button |
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| 421 | */ |
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| 422 | public function submit($text = null) |
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| 426 | |||
| 427 | /** |
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| 428 | * @param string|null $text |
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| 429 | * |
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| 430 | * @return \Spatie\Html\Elements\Button |
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| 431 | */ |
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| 432 | public function reset($text = null) |
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| 436 | |||
| 437 | /** |
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| 438 | * @param string $number |
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| 439 | * @param string|null $text |
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| 440 | * |
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| 441 | * @return \Spatie\Html\Elements\A |
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| 442 | */ |
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| 443 | public function tel($number, $text = null) |
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| 447 | |||
| 448 | /** |
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| 449 | * @param string|null $name |
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| 450 | * @param string|null $value |
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| 451 | * |
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| 452 | * @return \Spatie\Html\Elements\Input |
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| 453 | */ |
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| 454 | public function text($name = null, $value = null) |
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| 458 | |||
| 459 | /** |
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| 460 | * @param string|null $name |
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| 461 | * |
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| 462 | * @return \Spatie\Html\Elements\File |
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| 463 | */ |
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| 464 | public function file($name = null) |
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| 470 | |||
| 471 | /** |
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| 472 | * @param string|null $name |
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| 473 | * @param string|null $value |
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| 474 | * |
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| 475 | * @return \Spatie\Html\Elements\Textarea |
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| 476 | */ |
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| 477 | public function textarea($name = null, $value = null) |
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| 484 | |||
| 485 | /** |
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| 486 | * @return \Spatie\Html\Elements\Input |
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| 487 | */ |
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| 488 | public function token() |
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| 495 | |||
| 496 | /** |
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| 497 | * @param \ArrayAccess|array $model |
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| 498 | * |
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| 499 | * @return $this |
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| 500 | */ |
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| 501 | public function model($model) |
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| 507 | |||
| 508 | /** |
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| 509 | * @param \ArrayAccess|array $model |
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| 510 | * @param string|null $method |
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| 511 | * @param string|null $action |
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| 512 | * |
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| 513 | * @return \Spatie\Html\Elements\Form |
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| 514 | */ |
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| 515 | public function modelForm($model, $method = 'POST', $action = null): Form |
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| 521 | |||
| 522 | /** |
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| 523 | * @return $this |
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| 524 | */ |
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| 525 | public function endModel() |
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| 531 | |||
| 532 | /** |
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| 533 | * @return \Illuminate\Contracts\Support\Htmlable |
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| 534 | */ |
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| 535 | public function closeModelForm(): Htmlable |
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| 541 | |||
| 542 | /** |
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| 543 | * @param string $name |
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| 544 | * @param mixed $value |
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| 545 | * |
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| 546 | * @return mixed |
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| 547 | */ |
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| 548 | protected function old($name, $value = null) |
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| 566 | |||
| 567 | /** |
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| 568 | * Retrieve the value from the current session or assigned model. This is |
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| 569 | * a public alias for `old`. |
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| 570 | * |
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| 571 | * @param string $name |
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| 572 | * @param mixed $value |
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| 573 | * |
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| 574 | * @return mixed |
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| 575 | */ |
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| 576 | public function value($name, $default = null) |
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| 580 | |||
| 581 | /** |
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| 582 | * @param string $name |
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| 583 | * |
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| 584 | * @return string |
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| 585 | */ |
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| 586 | protected function fieldName($name) |
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| 590 | |||
| 591 | protected function ensureModelIsAvailable() |
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| 597 | |||
| 598 | /** |
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| 599 | * @param string $value |
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| 600 | * @param string $format DateTime formatting string supported by date_format() |
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| 601 | * @return string |
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| 602 | */ |
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| 603 | protected function formatDateTime($value, $format) |
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| 617 | } |
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| 618 |