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| <td><h1>CodeIgniter User Guide Version 2.0.0</h1></td> |
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| Upgrading from 1.6.3 to 1.7.0 |
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| <h1>Upgrading from 1.6.3 to 1.7.0</h1> |
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| <p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p> |
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| <h2>Step 1: Update your CodeIgniter files</h2> |
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| <p>Replace these files and directories in your "system" folder with the new versions:</p> |
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| <ul> |
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| <li><dfn>system/codeigniter</dfn></li> |
| <li><dfn>system/database</dfn></li> |
| <li><dfn>system/helpers</dfn></li> |
| <li><dfn>system/language</dfn></li> |
| <li><dfn>system/libraries</dfn></li> |
| </ul> |
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| <p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p> |
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| <h2>Step 2: Update your Session Table</h2> |
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| <p>If you are using the Session class in your application, AND if you are storing session data to a database, you must add a new column named <dfn>user_data</dfn> to your session table. |
| Here is an example of what this column might look like for MySQL:</p> |
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| <code>user_data text NOT NULL</code> |
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| <p>To add this column you will run a query similar to this:</p> |
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| <code>ALTER TABLE `ci_sessions` ADD `user_data` text NOT NULL</code> |
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| <p>You'll find more information regarding the new Session functionality in the <a href="../libraries/sessions.html">Session class</a> page.</p> |
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| <h2>Step 3: Update your Validation Syntax</h2> |
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| <p>This is an <strong>optional</strong>, but recommended step, for people currently using the Validation class. CI 1.7 introduces a new <a href="../libraries/form_validation.html">Form Validation class</a>, which |
| deprecates the old Validation library. We have left the old one in place so that existing applications that use it will not break, but you are encouraged to |
| migrate to the new version as soon as possible. Please read the user guide carefully as the new library works a little differently, and has several new features.</p> |
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| <h2>Step 4: Update your user guide</h2> |
| <p>Please replace your local copy of the user guide with the new version, including the image files.</p> |
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