46 lines
2.1 KiB
PHP
46 lines
2.1 KiB
PHP
<?php
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define( 'UPDATE_VERSION' , 1001 );
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/**
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*
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* update.php - automatic system update
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*
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* Automatically update database schemas and any other development changes such that
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* copying the latest files from the source code repository will always perform a clean
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* and painless upgrade.
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*
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* Each function in this file is named update_rnnnn() where nnnn is an increasing number
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* which began counting at 1000.
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*
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* At the top of the file "boot.php" is a define for DB_UPDATE_VERSION. Any time there is a change
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* to the database schema or one which requires an upgrade path from the existing application,
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* the DB_UPDATE_VERSION and the UPDATE_VERSION at the top of this file are incremented.
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*
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* The current DB_UPDATE_VERSION is stored in the config area of the database. If the application starts up
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* and DB_UPDATE_VERSION is greater than the last stored build number, we will process every update function
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* in order from the currently stored value to the new DB_UPDATE_VERSION. This is expected to bring the system
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* up to current without requiring re-installation or manual intervention.
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*
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* Once the upgrade functions have completed, the current DB_UPDATE_VERSION is stored as the current value.
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* The DB_UPDATE_VERSION will always be one greater than the last numbered script in this file.
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*
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* If you change the database schema, the following are required:
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* 1. Update the file database.sql to match the new schema.
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* 2. Update this file by adding a new function at the end with the number of the current DB_UPDATE_VERSION.
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* This function should modify the current database schema and perform any other steps necessary
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* to ensure that upgrade is silent and free from requiring interaction.
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* 3. Increment the DB_UPDATE_VERSION in boot.php *AND* the UPDATE_VERSION in this file to match it
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* 4. TEST the upgrade prior to checkin and filing a pull request.
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*
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*/
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function update_r1000() {
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$r = q("ALTER TABLE `channel` ADD `channel_a_delegate` TINYINT( 3 ) UNSIGNED NOT NULL DEFAULT '0', ADD INDEX ( `channel_a_delegate` )");
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if($r)
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return UPDATE_SUCCESS;
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return UPDATE_FAILED;
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}
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