Update batch with CodeIgniter

Question

I\'m trying to do a small open CMS with CodeIgniter and I\'m now working on the categories system.

I\'m really stuck with that and after many tries and forum post I

Answer 1

try to use UPDATE_BATCH

$this->db->update_batch();



$data = array(
   array(
      'title' => 'My title' ,
      'name' => 'My Name 2' ,
      'date' => 'My date 2'
   ),
   array(
      'title' => 'Another title' ,
      'name' => 'Another Name 2' ,
      'date' => 'Another date 2'
   )
);

$this->db->update_batch('mytable', $data, 'title'); 

The first parameter will contain the table name, the second is an associative array of values, the third parameter is the where key.

hope this help........................

UPDATE 

// Produces: 
// UPDATE `mytable` SET `name` = CASE
// WHEN `title` = 'My title' THEN 'My Name 2'
// WHEN `title` = 'Another title' THEN 'Another Name 2'
// ELSE `name` END,
// `date` = CASE 
// WHEN `title` = 'My title' THEN 'My date 2'
// WHEN `title` = 'Another title' THEN 'Another date 2'
// ELSE `date` END
// WHERE `title` IN ('My title','Another title')

Answer 2

First you cannot update multiple rows in one query, so there's nothing like insert_batch() for updates - you have to do it in a loop for each row. Next you should use 3rd table to link post id with category id in a one to many relation using foreign keys (InnoDB, worse performance) OR at least use category_id field in TABLE#2 that links to the category id, so you don't need to update this table in case of changes in TABLE#1.