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PHP DataObject::getComponents方法代码示例

本文整理汇总了PHP中SilverStripe\ORM\DataObject::getComponents方法的典型用法代码示例。如果您正苦于以下问题:PHP DataObject::getComponents方法的具体用法?PHP DataObject::getComponents怎么用?PHP DataObject::getComponents使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在SilverStripe\ORM\DataObject的用法示例。


在下文中一共展示了DataObject::getComponents方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: merge

 /**
  * Merges data and relations from another object of same class,
  * without conflict resolution. Allows to specify which
  * dataset takes priority in case its not empty.
  * has_one-relations are just transferred with priority 'right'.
  * has_many and many_many-relations are added regardless of priority.
  *
  * Caution: has_many/many_many relations are moved rather than duplicated,
  * meaning they are not connected to the merged object any longer.
  * Caution: Just saves updated has_many/many_many relations to the database,
  * doesn't write the updated object itself (just writes the object-properties).
  * Caution: Does not delete the merged object.
  * Caution: Does now overwrite Created date on the original object.
  *
  * @param DataObject $rightObj
  * @param string $priority left|right Determines who wins in case of a conflict (optional)
  * @param bool $includeRelations Merge any existing relations (optional)
  * @param bool $overwriteWithEmpty Overwrite existing left values with empty right values.
  *                            Only applicable with $priority='right'. (optional)
  * @return Boolean
  */
 public function merge($rightObj, $priority = 'right', $includeRelations = true, $overwriteWithEmpty = false)
 {
     $leftObj = $this;
     if ($leftObj->ClassName != $rightObj->ClassName) {
         // we can't merge similiar subclasses because they might have additional relations
         user_error("DataObject->merge(): Invalid object class '{$rightObj->ClassName}'\n\t\t\t(expected '{$leftObj->ClassName}').", E_USER_WARNING);
         return false;
     }
     if (!$rightObj->ID) {
         user_error("DataObject->merge(): Please write your merged-in object to the database before merging,\n\t\t\t\tto make sure all relations are transferred properly.').", E_USER_WARNING);
         return false;
     }
     // makes sure we don't merge data like ID or ClassName
     $leftData = $leftObj->db();
     $rightData = $rightObj->db();
     foreach ($rightData as $key => $rightSpec) {
         // Don't merge ID
         if ($key === 'ID') {
             continue;
         }
         // Only merge relations if allowed
         if ($rightSpec === 'ForeignKey' && !$includeRelations) {
             continue;
         }
         // don't merge conflicting values if priority is 'left'
         if ($priority == 'left' && $leftObj->{$key} !== $rightObj->{$key}) {
             continue;
         }
         // don't overwrite existing left values with empty right values (if $overwriteWithEmpty is set)
         if ($priority == 'right' && !$overwriteWithEmpty && empty($rightObj->{$key})) {
             continue;
         }
         // TODO remove redundant merge of has_one fields
         $leftObj->{$key} = $rightObj->{$key};
     }
     // merge relations
     if ($includeRelations) {
         if ($manyMany = $this->manyMany()) {
             foreach ($manyMany as $relationship => $class) {
                 $leftComponents = $leftObj->getManyManyComponents($relationship);
                 $rightComponents = $rightObj->getManyManyComponents($relationship);
                 if ($rightComponents && $rightComponents->exists()) {
                     $leftComponents->addMany($rightComponents->column('ID'));
                 }
                 $leftComponents->write();
             }
         }
         if ($hasMany = $this->hasMany()) {
             foreach ($hasMany as $relationship => $class) {
                 $leftComponents = $leftObj->getComponents($relationship);
                 $rightComponents = $rightObj->getComponents($relationship);
                 if ($rightComponents && $rightComponents->exists()) {
                     $leftComponents->addMany($rightComponents->column('ID'));
                 }
                 $leftComponents->write();
             }
         }
     }
     return true;
 }
开发者ID:jacobbuck,项目名称:silverstripe-framework,代码行数:81,代码来源:DataObject.php


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