本文整理汇总了PHP中SilverStripe\ORM\DataObject::getManyManyComponents方法的典型用法代码示例。如果您正苦于以下问题：PHP DataObject::getManyManyComponents方法的具体用法？PHP DataObject::getManyManyComponents怎么用？PHP DataObject::getManyManyComponents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类SilverStripe\ORM\DataObject的用法示例。
在下文中一共展示了DataObject::getManyManyComponents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;
}