Total Complexity | 62 |
Total Lines | 574 |
Duplicated Lines | 0 % |
Changes | 1 | ||
Bugs | 0 | Features | 0 |
Complex classes like Model 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.
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 Model, and based on these observations, apply Extract Interface, too.
1 | <?php |
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18 | abstract class Model implements ArrayAccess, IteratorAggregate, JsonSerializable, Serializable |
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19 | { |
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20 | /** |
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21 | * Attribute names as keys and types as values. |
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22 | * |
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23 | * @var array |
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24 | */ |
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25 | protected $attributes = array(); |
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26 | |||
27 | /** |
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28 | * The model data. |
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29 | * |
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30 | * @var array |
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31 | */ |
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32 | protected $data = array(); |
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33 | |||
34 | /** |
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35 | * Whether the model is currently in a valid state. |
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36 | * |
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37 | * @var bool |
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38 | */ |
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39 | protected $valid = false; |
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40 | |||
41 | /** |
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42 | * Errors that occurred with validation. |
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43 | * |
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44 | * @var array |
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45 | */ |
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46 | protected $errors = array(); |
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47 | |||
48 | /** |
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49 | * The attribute that uniquely identifies the model. |
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50 | * |
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51 | * @var string |
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52 | */ |
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53 | protected $key; |
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54 | |||
55 | /** |
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56 | * Attributes that have been modified. |
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57 | * |
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58 | * @var array |
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59 | */ |
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60 | protected $changed = array(); |
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61 | |||
62 | /** |
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63 | * Instantiate a new model. |
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64 | * |
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65 | * @param array $data [optional] Attributes to set on the model |
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66 | */ |
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67 | public function __construct($data = array()) |
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68 | { |
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69 | $this->setMany($data); |
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70 | } |
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71 | |||
72 | /** |
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73 | * Generate multiple instances of the model using arrays of attributes. |
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74 | * |
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75 | * @param array $rows |
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76 | * @return array |
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77 | */ |
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78 | public static function generate(array $rows = array()) |
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87 | } |
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88 | |||
89 | /** |
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90 | * Generate multiple instances of the model with the assumption that they |
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91 | * aren't new. |
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92 | * |
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93 | * Equivalent to generate() but with a reinstate() call on each new model. |
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94 | * |
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95 | * @param array $rows |
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96 | * @return array |
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97 | */ |
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98 | public static function hydrate(array $rows = array()) |
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99 | { |
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100 | $instances = static::generate($rows); |
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101 | |||
102 | foreach ($instances as $instance) { |
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103 | $instance->reinstate(); |
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104 | } |
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105 | |||
106 | return $instances; |
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107 | } |
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108 | |||
109 | /** |
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110 | * Recursively convert a model, or set of models, to an array. |
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111 | * |
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112 | * @param Model[]|Model $model |
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113 | * @return array |
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114 | */ |
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115 | public static function convertToArray($model) |
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116 | { |
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117 | if (is_object($model)) { |
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118 | if (method_exists($model, 'toArray')) { |
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119 | $model = $model->toArray(); |
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120 | } else { |
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121 | $model = (array) $model; |
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122 | } |
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123 | } |
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124 | |||
125 | if (is_array($model)) { |
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126 | foreach ($model as $key => $value) { |
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127 | $model[$key] = $value ? static::convertToArray($value) : $value; |
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128 | } |
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129 | } |
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130 | |||
131 | return $model; |
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132 | } |
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133 | |||
134 | /** |
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135 | * Recursively convert a model, or set of models, to JSON. |
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136 | * |
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137 | * @param Model[]|Model $model |
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138 | * @param int $options [optional] json_encode() options |
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139 | * @return string |
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140 | */ |
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141 | public static function convertToJson($model, $options = null) |
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144 | } |
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145 | |||
146 | /** |
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147 | * Prepare the given attribute name. |
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148 | * |
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149 | * @param string $attribute |
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150 | * @return string |
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151 | */ |
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152 | protected function prepareAttribute($attribute) |
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153 | { |
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154 | return strtolower($attribute); |
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155 | } |
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156 | |||
157 | /** |
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158 | * Retrieve the attribute names of the model. |
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159 | * |
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160 | * @return array |
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161 | */ |
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162 | public function attributes() |
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163 | { |
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164 | return array_keys($this->attributes) ?: array_keys($this->data ?: []); |
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165 | } |
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166 | |||
167 | /** |
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168 | * Retrieve the attribute types of the model. |
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169 | * |
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170 | * Attribute names are keys and types are values. |
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171 | * |
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172 | * @return array |
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173 | */ |
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174 | public function attributeTypes() |
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175 | { |
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176 | return $this->attributes; |
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177 | } |
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178 | |||
179 | /** |
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180 | * Get the transformer for accessing attributes. |
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181 | * |
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182 | * @return Transformer |
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183 | */ |
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184 | public function getAttributeAccessor() |
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185 | { |
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186 | return new Accessor($this->dateFormat()); |
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187 | } |
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188 | |||
189 | /** |
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190 | * Get the transformer for mutating attributes. |
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191 | * |
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192 | * @return Transformer |
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193 | */ |
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194 | public function getAttributeMutator() |
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195 | { |
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196 | return new Mutator($this->dateFormat()); |
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197 | } |
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198 | |||
199 | /** |
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200 | * Retrieve the name of the attribute that uniquely identifies this model. |
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201 | * |
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202 | * Defaults to `'id'` if the `key` property is unset. |
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203 | * |
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204 | * @return string |
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205 | */ |
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206 | public function key() |
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207 | { |
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208 | if (!isset($this->key)) { |
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209 | return 'id'; |
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210 | } |
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211 | |||
212 | return $this->prepareAttribute($this->key); |
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213 | } |
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214 | |||
215 | /** |
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216 | * Retrieve the value of the attribute that uniquely identifies this model. |
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217 | * |
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218 | * @return mixed |
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219 | */ |
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220 | public function id() |
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221 | { |
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222 | return $this->access($this->key()); |
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223 | } |
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224 | |||
225 | /** |
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226 | * Retrieve raw attributes that have changed. |
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227 | * |
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228 | * @return array |
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229 | */ |
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230 | public function changed() |
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231 | { |
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232 | return array_intersect_key($this->data, array_flip($this->changed)); |
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233 | } |
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234 | |||
235 | /** |
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236 | * Clear the record of changed attributes on the model, declaring the |
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237 | * current attributes as unmodified. |
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238 | */ |
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239 | public function reinstate() |
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240 | { |
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241 | $this->changed = array(); |
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242 | } |
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243 | |||
244 | /** |
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245 | * Retrieve the model's attributes. |
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246 | * |
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247 | * This method uses accessors to retrieve the data. |
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248 | * |
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249 | * @return array |
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250 | */ |
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251 | public function data() |
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252 | { |
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253 | $data = array(); |
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254 | |||
255 | foreach (array_keys($this->data) as $attribute) { |
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256 | $data[$attribute] = $this->get($attribute); |
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257 | } |
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258 | |||
259 | return $data; |
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260 | } |
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261 | |||
262 | /** |
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263 | * Retrieve the model's raw attributes. |
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264 | * |
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265 | * This method returns the raw data without using any accessors. |
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266 | * |
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267 | * @return array |
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268 | */ |
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269 | public function rawData() |
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272 | } |
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273 | |||
274 | /** |
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275 | * Determine whether the given attribute is set on the model. |
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276 | * |
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277 | * @param string $attribute |
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278 | * @return bool |
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279 | */ |
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280 | public function has($attribute) |
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281 | { |
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282 | return isset($this->data[$this->prepareAttribute($attribute)]); |
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283 | } |
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284 | |||
285 | /** |
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286 | * Determine whether the given attribute has a defined type. |
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287 | * |
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288 | * @param string $attribute |
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289 | * @return bool |
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290 | */ |
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291 | protected function mutable($attribute) |
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292 | { |
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293 | return isset($this->attributes[$this->prepareAttribute($attribute)]); |
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294 | } |
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295 | |||
296 | /** |
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297 | * Unmutate the given attribute to be retrieved. |
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298 | * |
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299 | * @param string $attribute |
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300 | * @return mixed |
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301 | */ |
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302 | protected function access($attribute) |
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303 | { |
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304 | if (!$this->has($attribute)) { |
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305 | return null; |
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306 | } |
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307 | |||
308 | $attribute = $this->prepareAttribute($attribute); |
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309 | |||
310 | $value = $this->data[$attribute]; |
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311 | |||
312 | if (!$this->mutable($attribute)) { |
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313 | return $value; |
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314 | } |
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315 | |||
316 | $type = $this->attributes[$attribute]; |
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317 | |||
318 | $accessor = $this->getAttributeAccessor(); |
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319 | |||
320 | return $accessor->transform($value, $type); |
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321 | } |
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322 | |||
323 | /** |
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324 | * Mutate the given attribute to be set on the model. |
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325 | * |
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326 | * @param string $attribute |
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327 | * @param mixed $value [optional] |
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328 | * @return mixed |
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329 | */ |
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330 | protected function mutate($attribute, $value = null) |
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331 | { |
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332 | if (!$this->mutable($attribute)) { |
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333 | return $value; |
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334 | } |
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335 | |||
336 | $type = $this->attributes[$this->prepareAttribute($attribute)]; |
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337 | |||
338 | $mutator = $this->getAttributeMutator(); |
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339 | |||
340 | return $mutator->transform($value, $type); |
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341 | } |
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342 | |||
343 | /** |
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344 | * Retrieve the given attribute from the model. |
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345 | * |
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346 | * @param string $attribute |
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347 | * @return mixed |
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348 | */ |
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349 | public function get($attribute) |
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350 | { |
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351 | return $this->access($attribute); |
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352 | } |
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353 | |||
354 | /** |
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355 | * Set the value of an attribute on the model. |
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356 | * |
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357 | * If attribute is an array it will be forwarded to `setMany()`. |
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358 | * |
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359 | * @param array|string $attribute |
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360 | * @param mixed $value [optional] |
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361 | */ |
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362 | public function set($attribute, $value = null) |
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363 | { |
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364 | if (is_array($attribute)) { |
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365 | return $this->setMany($attribute); |
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366 | } |
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367 | |||
368 | $attribute = $this->prepareAttribute($attribute); |
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369 | $value = $this->mutate($attribute, $value); |
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370 | |||
371 | if (!$this->has($attribute) || $value !== $this->data[$attribute]) { |
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372 | $this->data[$attribute] = $value; |
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373 | $this->changed = array_merge($this->changed, array($attribute)); |
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374 | } |
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375 | } |
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376 | |||
377 | /** |
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378 | * Set the values of the given attributes on the model. |
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379 | * |
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380 | * @param array $values |
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381 | */ |
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382 | public function setMany($values) |
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383 | { |
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384 | foreach ((array) $values as $attribute => $value){ |
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385 | $this->set($attribute, $value); |
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386 | } |
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387 | } |
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388 | |||
389 | /** |
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390 | * Remove the value of an attribute. |
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391 | * |
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392 | * @param string $attribute |
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393 | */ |
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394 | public function remove($attribute) |
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395 | { |
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396 | unset($this->data[$this->prepareAttribute($attribute)]); |
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397 | } |
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398 | |||
399 | /** |
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400 | * Retrieve the format to use for date attributes. |
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401 | * |
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402 | * @return string |
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403 | */ |
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404 | public function dateFormat() |
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405 | { |
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406 | return 'Y-m-d H:i:s'; |
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407 | } |
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408 | |||
409 | /** |
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410 | * Set the `created` and `modified` attributes using the given timestamp. |
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411 | * |
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412 | * Defaults to the current system time if none is given. Only sets `created` |
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413 | * attribute if `id` evaluates to false. |
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414 | * |
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415 | * @param int $time [optional] |
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416 | */ |
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417 | public function stamp($time = null) |
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418 | { |
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419 | $time = $time ?: time(); |
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420 | $this->set('modified', $time); |
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421 | |||
422 | if (!$this->has('created')) { |
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423 | $this->set('created', $time); |
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424 | } |
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425 | } |
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426 | |||
427 | /** |
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428 | * Validate all of the model's attributes. |
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429 | * |
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430 | * @return bool |
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431 | */ |
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432 | public function validate() |
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433 | { |
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434 | return $this->valid = !count($this->errors); |
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435 | } |
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436 | |||
437 | /** |
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438 | * Retrieve an array of error strings generated by the last validation |
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439 | * attempt. |
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440 | * |
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441 | * @return array |
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442 | */ |
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443 | public function errors() |
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444 | { |
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445 | return $this->errors; |
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446 | } |
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447 | |||
448 | /** |
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449 | * Recursively convert the model to an array. |
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450 | * |
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451 | * @return array |
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452 | */ |
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453 | public function toArray() |
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454 | { |
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455 | return static::convertToArray($this->data()); |
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456 | } |
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457 | |||
458 | /** |
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459 | * Serialize the model as a JSON string. |
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460 | * |
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461 | * @return string |
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462 | */ |
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463 | public function toJson() |
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464 | { |
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465 | return json_encode($this->jsonSerialize()); |
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466 | } |
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467 | |||
468 | /** |
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469 | * Determine whether an attribute is set on the model. Shortcut for `has()`. |
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470 | * |
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471 | * @param string $property |
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472 | * @return bool |
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473 | */ |
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474 | public function __isset($property) |
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475 | { |
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476 | return $this->has($property); |
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477 | } |
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478 | |||
479 | /** |
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480 | * Retrieve an attribute from the model. Shortcut for `get()`. |
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481 | * |
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482 | * @param string $property |
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483 | * @return mixed |
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484 | */ |
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485 | public function __get($property) |
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486 | { |
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487 | return $this->get($property); |
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488 | } |
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489 | |||
490 | /** |
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491 | * Set an attribute's value. Shortcut for `set()`. |
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492 | * |
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493 | * @param string $property |
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494 | * @param mixed $value |
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495 | */ |
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496 | public function __set($property, $value) |
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497 | { |
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498 | $this->set($property, $value); |
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499 | } |
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500 | |||
501 | /** |
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502 | * Unset an attribute's value. Shortcut for `remove()`. |
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503 | * |
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504 | * @param string $property |
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505 | */ |
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506 | public function __unset($property) |
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507 | { |
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508 | $this->remove($property); |
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509 | } |
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510 | |||
511 | /** |
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512 | * Determine whether an attribute is set at the given offset. |
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513 | * |
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514 | * @param mixed $offset |
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515 | * @return bool |
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516 | */ |
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517 | public function offsetExists($offset) |
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518 | { |
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519 | return $this->has($offset); |
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520 | } |
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521 | |||
522 | /** |
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523 | * Get the attribute at the given offset. |
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524 | * |
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525 | * @param mixed $offset |
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526 | * @return mixed |
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527 | */ |
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528 | public function offsetGet($offset) |
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529 | { |
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530 | return $this->get($offset); |
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531 | } |
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532 | |||
533 | /** |
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534 | * Set the attribute at the given offset. |
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535 | * |
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536 | * @param mixed $offset |
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537 | * @param mixed $value |
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538 | */ |
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539 | public function offsetSet($offset, $value) |
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540 | { |
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541 | $this->set($offset, $value); |
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542 | } |
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543 | |||
544 | /** |
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545 | * Unset the attribute at the given offset. |
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546 | * |
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547 | * @param mixed $offset |
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548 | */ |
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549 | public function offsetUnset($offset) |
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552 | } |
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553 | |||
554 | /** |
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555 | * Retrieve an iterator for the model's data. |
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556 | * |
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557 | * @return \Traversable |
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558 | */ |
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559 | public function getIterator() |
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560 | { |
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561 | return new ArrayIterator($this->data()); |
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562 | } |
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563 | |||
564 | /** |
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565 | * Serialize the model's raw data. |
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566 | * |
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567 | * @return string |
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568 | */ |
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569 | public function serialize() |
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570 | { |
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571 | return serialize($this->data); |
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572 | } |
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573 | |||
574 | /** |
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575 | * Unserialize the model's raw data. |
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576 | * |
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577 | * @param string $serialized |
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578 | */ |
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579 | public function unserialize($serialized) |
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580 | { |
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581 | $this->data = unserialize($serialized); |
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582 | } |
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583 | |||
584 | /** |
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585 | * Prepare the model's attributes for JSON serialization. |
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586 | * |
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587 | * @return array |
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588 | */ |
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589 | public function jsonSerialize() |
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592 | } |
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593 | } |
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594 |