22 行
		
	
	
	
		
			411 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			22 行
		
	
	
	
		
			411 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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defined('BASEPATH') OR exit('No direct script access allowed');
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class Migration_add_userid_to_hardware extends CI_Migration {
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	public function up()
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	{
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		$fields = array(
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			'user_id BIGINT(20) DEFAULT NULL',
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		);
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		if (!$this->db->field_exists('user_id', 'cat')) {
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			$this->dbforge->add_column('cat', $fields);
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		}
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	}
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	public function down()
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	{
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		$this->dbforge->drop_column('cat', 'user_id');
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	}
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}
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