29 行
		
	
	
	
		
			736 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
		
		
			
		
	
	
			29 行
		
	
	
	
		
			736 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
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								<?php
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								defined('BASEPATH') OR exit('No direct script access allowed');
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								/**
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								 * Class Migration_add_propmode_to_cat
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								 *
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								 * Creates a varchar column in CAT table that holds value of propagation mode
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								 * 
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								 */
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								class Migration_add_propmode_to_cat extends CI_Migration {
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								        public function up()
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								        {
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								                if (!$this->db->field_exists('prop_mode', 'cat')) {
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								                        $fields = array(
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								                                'prop_mode VARCHAR(10) DEFAULT NULL',
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								                        );
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								                        $this->dbforge->add_column('cat', $fields, 'sat_name');
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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', 'propmode');
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								        }
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								}
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