在Yii中批量插入 [英] Batch insert in Yii

问题描述

我需要插入Yii的多个ActiveRecord的对象，如果所有的人都插入

I need to insert multiple ActiveRecord object in Yii,if all of them inserted

$transaction = Yii::app()->db->beginTransaction();
for ($i = 0;$i < 10;$i++){
    $model = new Mymodel();
    $model->x = $i;
    if (!$model->save()){
        $transaction->rollback();
        break;
    }
}
if ($transaction->active)
    $transaction->commit();

现在我需要插入所有的人都在一个查询中，我该如何使用活动记录中做到这一点？

Now I need to insert all of them in one query,How can I do it during using active record?

推荐答案

尽管不完全的Yii像，它可以制成作为扩展/组件，并且被看作是正常的命令，所以交易仍然适用。这将是完全有可能对其进行设置，利用参数，而不是字符串的查询，也可以实现检查空和默认值。

While not entirely Yii like, it can be made as an extension/component, and is treated like a normal command, so transactions still apply. It would be entirely possible to set this up to utilise parameters rather than string literals in the query, and could also implement checking of null and default values.

class CDbMultiInsertCommand extends CDbCommand{

/** @var CActiveRecord $class */
private $class;

/** @var string $insert_template */
private $insert_template = "insert into %s(%s) ";

/** @var string $value_template */
private $value_template = "(%s)";

/** @var string $query */
public $query;

/** @var CDbColumnSchema[] $columns */
private $columns;

/** @var boolean $fresh */
private $fresh;

/** @var CDbConnection $db */
private $db;

/** @param CActiveRecord $class
 *  @param CDbConnection $db
 */
public function __construct($class, $db = null){
  $this->class = $class;
  $this->createTemplate();
  if(is_null($db)){
    $this->db = Yii::app()->db;
  }
  else{
    $this->db = $db;
  }
}
private function createTemplate(){
  $this->fresh = true;
  $value_template = "";
  $columns_string = "";
  $this->columns = $this->class->getMetaData()->tableSchema->columns;
  $counter = 0;
  foreach($this->columns as $column){
    /** @var CDbColumnSchema $column */
    if($column->autoIncrement){
      $value_template .= "0";
    }
    else if($column->type == "integer" || $column->type == "boolean" || $column->type == "float" || $column->type == "double") {
      $value_template .= "%d";
    }
    else{
      $value_template .= "\"%s\"";
    }
    $columns_string .= $column->name;
    $counter ++;
    if($counter != sizeof($this->columns)){
      $columns_string .= ", ";
      $value_template .= ", ";
    }
  }

  $this->insert_template = sprintf($this->insert_template, $this->class->tableName(), $columns_string);
  $this->value_template = sprintf($this->value_template, $value_template);
}

/** @param boolean $validate
 *  @param CActiveRecord $record
 */
public function add($record, $validate = true){
  $values = array();
  if($validate){
    if(!$record->validate()){
      return false;
    }
  }
  $counter = 0;
  foreach($this->columns as $column){
    if($column->autoIncrement){
      continue;
    }
    $values[$counter] = $this->class->{$column->name};
    $counter ++;
  }
  if(!$this->fresh){
    $this->query .= ",";
  }
  else{
    $this->query = "values";
  }
  $this->fresh = false;
  $this->query .= vsprintf($this->value_template, $values);
  return true;
}

public function getConnection(){
  return $this->db;
}

public function execute(){
  $this->setText($this->insert_template." ".$this->query);
  return parent::execute();
}
}

用法是：

$transaction = Yii::app()->db->beginTransaction();
$multi = new CDbMultiInsertCommand(new Mymodel());
for ($i = 0;$i < 10;$i++){
    $model = new Mymodel();
    $model->x = $i;
    $multi->add($model, $shouldBeValidated);
}

$multi->execute();

if ($transaction->active)
    $transaction->commit();

当然也可以作出更详细和延伸，以便更新等

Of course it could be made more elaborate and extended to allow for updates, etc

希望这有助于。

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