Total Complexity | 56 |
Total Lines | 346 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like FixtureBlueprint 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 FixtureBlueprint, and based on these observations, apply Extract Interface, too.
1 | <?php |
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19 | class FixtureBlueprint |
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20 | { |
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21 | |||
22 | /** |
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23 | * @var array Map of field names to values. Supersedes {@link DataObject::$defaults}. |
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24 | */ |
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25 | protected $defaults = array(); |
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26 | |||
27 | /** |
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28 | * @var String Arbitrary name by which this fixture type can be referenced. |
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29 | */ |
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30 | protected $name; |
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31 | |||
32 | /** |
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33 | * @var String Subclass of {@link DataObject} |
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34 | */ |
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35 | protected $class; |
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36 | |||
37 | /** |
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38 | * @var array |
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39 | */ |
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40 | protected $callbacks = array( |
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41 | 'beforeCreate' => array(), |
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42 | 'afterCreate' => array(), |
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43 | ); |
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44 | |||
45 | /** @config */ |
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46 | private static $dependencies = array( |
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47 | 'factory' => '%$'.FixtureFactory::class, |
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48 | ); |
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49 | |||
50 | /** |
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51 | * @param String $name |
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52 | * @param String $class Defaults to $name |
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53 | * @param array $defaults |
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54 | */ |
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55 | public function __construct($name, $class = null, $defaults = array()) |
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56 | { |
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57 | if (!$class) { |
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58 | $class = $name; |
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59 | } |
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60 | |||
61 | if (!is_subclass_of($class, DataObject::class)) { |
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62 | throw new InvalidArgumentException(sprintf( |
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63 | 'Class "%s" is not a valid subclass of DataObject', |
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64 | $class |
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65 | )); |
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66 | } |
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67 | |||
68 | $this->name = $name; |
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69 | $this->class = $class; |
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70 | $this->defaults = $defaults; |
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71 | } |
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72 | |||
73 | /** |
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74 | * @param string $identifier Unique identifier for this fixture type |
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75 | * @param array $data Map of property names to their values. |
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76 | * @param array $fixtures Map of fixture names to an associative array of their in-memory |
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77 | * identifiers mapped to their database IDs. Used to look up |
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78 | * existing fixtures which might be referenced in the $data attribute |
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79 | * via the => notation. |
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80 | * @return DataObject |
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81 | * @throws Exception |
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82 | */ |
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83 | public function createObject($identifier, $data = null, $fixtures = null) |
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84 | { |
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85 | // We have to disable validation while we import the fixtures, as the order in |
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86 | // which they are imported doesnt guarantee valid relations until after the import is complete. |
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87 | // Also disable filesystem manipulations |
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88 | Config::nest(); |
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89 | Config::modify()->set(DataObject::class, 'validation_enabled', false); |
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90 | Config::modify()->set(File::class, 'update_filesystem', false); |
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91 | |||
92 | $this->invokeCallbacks('beforeCreate', array($identifier, &$data, &$fixtures)); |
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93 | |||
94 | try { |
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95 | $class = $this->class; |
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96 | $schema = DataObject::getSchema(); |
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97 | $obj = Injector::inst()->create($class); |
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98 | |||
99 | // If an ID is explicitly passed, then we'll sort out the initial write straight away |
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100 | // This is just in case field setters triggered by the population code in the next block |
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101 | // Call $this->write(). (For example, in FileTest) |
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102 | if (isset($data['ID'])) { |
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103 | $obj->ID = $data['ID']; |
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104 | |||
105 | // The database needs to allow inserting values into the foreign key column (ID in our case) |
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106 | $conn = DB::get_conn(); |
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107 | $baseTable = DataObject::getSchema()->baseDataTable($class); |
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108 | if (method_exists($conn, 'allowPrimaryKeyEditing')) { |
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109 | $conn->allowPrimaryKeyEditing($baseTable, true); |
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110 | } |
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111 | $obj->write(false, true); |
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112 | if (method_exists($conn, 'allowPrimaryKeyEditing')) { |
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113 | $conn->allowPrimaryKeyEditing($baseTable, false); |
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114 | } |
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115 | } |
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116 | |||
117 | // Populate defaults |
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118 | if ($this->defaults) { |
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119 | foreach ($this->defaults as $fieldName => $fieldVal) { |
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120 | if (isset($data[$fieldName]) && $data[$fieldName] !== false) { |
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121 | continue; |
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122 | } |
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123 | |||
124 | if (is_callable($fieldVal)) { |
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125 | $obj->$fieldName = $fieldVal($obj, $data, $fixtures); |
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126 | } else { |
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127 | $obj->$fieldName = $fieldVal; |
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128 | } |
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129 | } |
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130 | } |
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131 | |||
132 | // Populate overrides |
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133 | if ($data) { |
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134 | foreach ($data as $fieldName => $fieldVal) { |
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135 | if ($schema->manyManyComponent($class, $fieldName) |
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136 | || $schema->hasManyComponent($class, $fieldName) |
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137 | || $schema->hasOneComponent($class, $fieldName) |
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138 | ) { |
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139 | continue; |
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140 | } |
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141 | |||
142 | $this->setValue($obj, $fieldName, $fieldVal, $fixtures); |
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143 | } |
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144 | } |
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145 | |||
146 | $obj->write(); |
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147 | |||
148 | // Save to fixture before relationship processing in case of reflexive relationships |
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149 | if (!isset($fixtures[$class])) { |
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150 | $fixtures[$class] = array(); |
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151 | } |
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152 | $fixtures[$class][$identifier] = $obj->ID; |
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153 | |||
154 | // Populate all relations |
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155 | if ($data) { |
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156 | foreach ($data as $fieldName => $fieldVal) { |
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157 | $isManyMany = $schema->manyManyComponent($class, $fieldName); |
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158 | $isHasMany = $schema->hasManyComponent($class, $fieldName); |
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159 | if ($isManyMany && $isHasMany) { |
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160 | throw new InvalidArgumentException("$fieldName is both many_many and has_many"); |
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161 | } |
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162 | if ($isManyMany || $isHasMany) { |
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163 | $obj->write(); |
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164 | |||
165 | // Many many components need a little extra work to extract extrafields |
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166 | if (is_array($fieldVal) && $isManyMany) { |
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167 | // handle lists of many_many relations. Each item can |
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168 | // specify the many_many_extraFields against each |
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169 | // related item. |
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170 | foreach ($fieldVal as $relVal) { |
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171 | // Check for many_many_extrafields |
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172 | $extrafields = []; |
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173 | if (is_array($relVal)) { |
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174 | // Item is either first row, or key in yet another nested array |
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175 | $item = key($relVal); |
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176 | if (is_array($relVal[$item]) && count($relVal) === 1) { |
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177 | // Extra fields from nested array |
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178 | $extrafields = $relVal[$item]; |
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179 | } else { |
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180 | // Extra fields from subsequent items |
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181 | array_shift($relVal); |
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182 | $extrafields = $relVal; |
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183 | } |
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184 | } else { |
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185 | $item = $relVal; |
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186 | } |
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187 | $id = $this->parseValue($item, $fixtures); |
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188 | |||
189 | $obj->getManyManyComponents($fieldName)->add( |
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190 | $id, |
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191 | $extrafields |
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192 | ); |
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193 | } |
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194 | } else { |
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195 | $items = is_array($fieldVal) |
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196 | ? $fieldVal |
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197 | : preg_split('/ *, */', trim($fieldVal)); |
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198 | |||
199 | $parsedItems = []; |
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200 | foreach ($items as $item) { |
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201 | // Check for correct format: =><relationname>.<identifier>. |
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202 | // Ignore if the item has already been replaced with a numeric DB identifier |
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203 | if (!is_numeric($item) && !preg_match('/^=>[^\.]+\.[^\.]+/', $item)) { |
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204 | throw new InvalidArgumentException(sprintf( |
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205 | 'Invalid format for relation "%s" on class "%s" ("%s")', |
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206 | $fieldName, |
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207 | $class, |
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208 | $item |
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209 | )); |
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210 | } |
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211 | |||
212 | $parsedItems[] = $this->parseValue($item, $fixtures); |
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213 | } |
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214 | |||
215 | if ($isHasMany) { |
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216 | $obj->getComponents($fieldName)->setByIDList($parsedItems); |
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217 | } elseif ($isManyMany) { |
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218 | $obj->getManyManyComponents($fieldName)->setByIDList($parsedItems); |
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219 | } |
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220 | } |
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221 | } else { |
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222 | $hasOneField = preg_replace('/ID$/', '', $fieldName); |
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223 | if ($className = $schema->hasOneComponent($class, $hasOneField)) { |
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224 | $obj->{$hasOneField.'ID'} = $this->parseValue($fieldVal, $fixtures, $fieldClass); |
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225 | // Inject class for polymorphic relation |
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226 | if ($className === 'SilverStripe\\ORM\\DataObject') { |
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227 | $obj->{$hasOneField.'Class'} = $fieldClass; |
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228 | } |
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229 | } |
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230 | } |
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231 | } |
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232 | } |
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233 | $obj->write(); |
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234 | |||
235 | // If LastEdited was set in the fixture, set it here |
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236 | if ($data && array_key_exists('LastEdited', $data)) { |
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237 | $this->overrideField($obj, 'LastEdited', $data['LastEdited'], $fixtures); |
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238 | } |
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239 | } catch (Exception $e) { |
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240 | Config::unnest(); |
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241 | throw $e; |
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242 | } |
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243 | |||
244 | Config::unnest(); |
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245 | $this->invokeCallbacks('afterCreate', array($obj, $identifier, &$data, &$fixtures)); |
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246 | |||
247 | return $obj; |
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248 | } |
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249 | |||
250 | /** |
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251 | * @param array $defaults |
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252 | * @return $this |
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253 | */ |
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254 | public function setDefaults($defaults) |
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258 | } |
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259 | |||
260 | /** |
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261 | * @return array |
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262 | */ |
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263 | public function getDefaults() |
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266 | } |
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267 | |||
268 | /** |
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269 | * @return string |
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270 | */ |
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271 | public function getClass() |
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272 | { |
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273 | return $this->class; |
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274 | } |
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275 | |||
276 | /** |
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277 | * See class documentation. |
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278 | * |
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279 | * @param string $type |
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280 | * @param callable $callback |
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281 | * @return $this |
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282 | */ |
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283 | public function addCallback($type, $callback) |
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284 | { |
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285 | if (!array_key_exists($type, $this->callbacks)) { |
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286 | throw new InvalidArgumentException(sprintf('Invalid type "%s"', $type)); |
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287 | } |
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288 | |||
289 | $this->callbacks[$type][] = $callback; |
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290 | return $this; |
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291 | } |
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292 | |||
293 | /** |
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294 | * @param string $type |
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295 | * @param callable $callback |
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296 | * @return $this |
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297 | */ |
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298 | public function removeCallback($type, $callback) |
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299 | { |
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300 | $pos = array_search($callback, $this->callbacks[$type]); |
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301 | if ($pos !== false) { |
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302 | unset($this->callbacks[$type][$pos]); |
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303 | } |
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304 | |||
305 | return $this; |
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306 | } |
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307 | |||
308 | protected function invokeCallbacks($type, $args = array()) |
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312 | } |
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313 | } |
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314 | |||
315 | /** |
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316 | * Parse a value from a fixture file. If it starts with => |
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317 | * it will get an ID from the fixture dictionary |
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318 | * |
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319 | * @param string $value |
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320 | * @param array $fixtures See {@link createObject()} |
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321 | * @param string $class If the value parsed is a class relation, this parameter |
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322 | * will be given the value of that class's name |
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323 | * @return string Fixture database ID, or the original value |
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324 | */ |
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325 | protected function parseValue($value, $fixtures = null, &$class = null) |
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326 | { |
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327 | if (substr($value, 0, 2) == '=>') { |
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328 | // Parse a dictionary reference - used to set foreign keys |
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329 | list($class, $identifier) = explode('.', substr($value, 2), 2); |
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330 | |||
331 | if ($fixtures && !isset($fixtures[$class][$identifier])) { |
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332 | throw new InvalidArgumentException(sprintf( |
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333 | 'No fixture definitions found for "%s"', |
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334 | $value |
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335 | )); |
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336 | } |
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337 | |||
338 | return $fixtures[$class][$identifier]; |
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339 | } else { |
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340 | // Regular field value setting |
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341 | return $value; |
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342 | } |
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343 | } |
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344 | |||
345 | protected function setValue($obj, $name, $value, $fixtures = null) |
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346 | { |
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347 | $obj->$name = $this->parseValue($value, $fixtures); |
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348 | } |
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349 | |||
350 | protected function overrideField($obj, $fieldName, $value, $fixtures = null) |
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365 | } |
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366 | } |
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367 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: