Iva posted

escapes & order_by datetime column in Codeigniter

shyam
answered Apr 27 '23 00:00

When using the ORDER BY clause in CodeIgniter with a datetime column, you need to take care of the following points:

Properly escape the column name and direction: When using CodeIgniter's query builder, you should use the escape() method to properly escape the column name and direction in your ORDER BY clause. For example:


$this->db->order_by($this->db->escape('created_at') . ' DESC');

This will ensure that any potentially malicious input is properly sanitized and doesn't pose a security risk.

Use the proper datetime format: Make sure that you are using the proper datetime format for your database. For example, if your database stores datetime values in the format "YYYY-MM-DD HH:MM:SS", you should use this format in your ORDER BY clause as well.

Convert the datetime value to the proper timezone: If your datetime column is stored in a different timezone than your application, you may need to convert the value to the proper timezone before sorting. You can use CodeIgniter's built-in timezone functions to accomplish this.

Here's an example of how to properly order by a datetime column in CodeIgniter:


$this->db->order_by($this->db->escape('created_at') . ' DESC');

This assumes that your datetime column is named "created_at". If your datetime column has a different name, simply replace "created_at" with the correct column name.

If you need to convert the datetime value to a different timezone, you can use the following code:


$this->db->select('CONVERT_TZ(created_at, "+00:00", "-07:00") as created_at', FALSE);
$this->db->order_by($this->db->escape('created_at') . ' DESC');

This assumes that your datetime column is stored in UTC timezone and you want to convert it to Pacific Standard Time. You can replace the timezone values with the appropriate values for your situation.

Note that the second parameter of the select() method is set to FALSE to prevent CodeIgniter from escaping the column name. This is necessary to properly apply the timezone conversion function to the column.

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Iva posted

escapes & order_by datetime column in Codeigniter

shyam answered Apr 27 '23 00:00

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shyam
answered Apr 27 '23 00:00