70 lines
3.4 KiB
PHP
70 lines
3.4 KiB
PHP
<?php
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/**
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* Copyright (C) 2019 Xibo Signage Ltd
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*
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* Xibo - Digital Signage - http://www.xibo.org.uk
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*
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* This file is part of Xibo.
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*
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* Xibo is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* Xibo is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Xibo. If not, see <http://www.gnu.org/licenses/>.
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*/
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use Phinx\Migration\AbstractMigration;
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class DisplayProfileCommandLinkFixMigration extends AbstractMigration
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{
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/** @inheritdoc */
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public function change()
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{
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// query the database and look for duplicate entries
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$duplicatesData = $this->query('SELECT commandId, displayProfileId FROM lkcommanddisplayprofile WHERE commandId IN ( SELECT commandId FROM lkcommanddisplayprofile GROUP BY commandId HAVING COUNT(*) > 1) ');
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$rowsDuplicatesData = $duplicatesData->fetchAll(PDO::FETCH_ASSOC);
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// only execute this code if any duplicates were found
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if (count($rowsDuplicatesData) > 0) {
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$duplicates = [];
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// create new array with displayProfileId as the key
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foreach ($rowsDuplicatesData as $row) {
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$duplicates[$row['displayProfileId']][] = $row['commandId'];
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}
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// iterate through the arrays get unique commandIds, calculate the limit and execute Delete query.
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foreach ($duplicates as $displayProfileId => $commandId) {
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// commandId is an array, get the unique Ids from it
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$uniqueCommandIds = array_unique($commandId);
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// iterate through our array of uniqueCommandIds and calculate the LIMIT for our SQL Delete statement
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foreach ($uniqueCommandIds as $uniqueCommandId) {
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// create an array with commandId as the key and count of duplicate as value
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$limits = array_count_values($commandId);
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// Limits is an array with uniqueCommandId as the key and count of duplicate as value, we want to leave one record, hence we subtract 1
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$limit = $limits[$uniqueCommandId] - 1;
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// if we have any duplicates then run the delete statement, for each displayProfileId with uniqueCommandId and calculated limit per uniqueCommandId
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if ($limit > 0) {
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$this->execute('DELETE FROM lkcommanddisplayprofile WHERE commandId = ' . $uniqueCommandId . ' AND displayProfileId = ' . $displayProfileId . ' LIMIT ' . $limit);
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}
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}
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}
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}
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// add the primary key for CMS upgrades, fresh CMS Installations will have it correctly added in installation migration.
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if (!$this->fetchRow('SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = \'lkcommanddisplayprofile\' AND CONSTRAINT_TYPE = \'PRIMARY KEY\' AND CONSTRAINT_SCHEMA = Database();')) {
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$this->execute('ALTER TABLE lkcommanddisplayprofile ADD PRIMARY KEY (commandId, displayProfileId);');
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}
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}
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}
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