tbl_relation.php

phpMyAdmin图形界面化操作,我已经配置好了,只要把解要压缩后的文件放到站点下就可以用了

<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Display table relations for viewing and editing
 *
 * includes phpMyAdmin relations and InnoDB relations
 *
 * @todo fix name handling: currently names with dots (.) are not properly handled
 * @todo foreign key constraints require both fields being of equal type and size
 * @todo check foreign fields to be from same type and size, all other makes no sense
 * @todo add an link to create an index required for constraints, or an option to do automatically
 * @todo if above todos are fullfilled we can add all fields meet requirements in the select dropdown
 * @version $Id: tbl_relation.php 11378 2008-07-09 15:24:44Z lem9 $
 */

/**
 * Gets some core libraries
 */
require_once './libraries/common.inc.php';
require_once './libraries/tbl_common.php';
$url_query .= '&amp;goto=tbl_sql.php';


/**
 * Gets tables informations
 */
require_once './libraries/tbl_info.inc.php';

// Note: in libraries/tbl_links.inc.php we get and display the table comment.
// For InnoDB, this comment contains the REFER information but any update
// has not been done yet (will be done in tbl_relation.php later).
$avoid_show_comment = TRUE;

/**
 * Displays top menu links
 */
require_once './libraries/tbl_links.inc.php';

require_once './libraries/relation.lib.php';

$options_array = array(
    'CASCADE'   => 'CASCADE',
    'SET_NULL'  => 'SET NULL',
    'NO_ACTION' => 'NO ACTION',
    'RESTRICT'  => 'RESTRICT',
);

/**
 * Generate dropdown choices
 *
 * @param   string   Message to display
 * @param   string   Name of the <select> field
 * @param   array    Choices for dropdown
 * @return  string   The existing value (for selected)
 *
 * @access  public
 */
function PMA_generate_dropdown($dropdown_question, $select_name, $choices, $selected_value)
{
    echo htmlspecialchars($dropdown_question) . '&nbsp;&nbsp;';

    echo '<select name="' . htmlspecialchars($select_name) . '">' . "\n";
    echo '<option value=""></option>' . "\n";

    foreach ($choices as $one_value => $one_label) {
        echo '<option value="' . htmlspecialchars($one_value) . '"';
        if ($selected_value == $one_value) {
            echo ' selected="selected" ';
        }
        echo '>' . htmlspecialchars($one_label) . '</option>' . "\n";
    }
    echo '</select>' . "\n";
}

/**
 * Gets the relation settings
 */
$cfgRelation = PMA_getRelationsParam();


/**
 * Updates
 */
if ($cfgRelation['relwork']) {
    $existrel = PMA_getForeigners($db, $table, '', 'internal');
}
if (PMA_foreignkey_supported($tbl_type)) {
    $existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
}
if ($cfgRelation['displaywork']) {
    $disp     = PMA_getDisplayField($db, $table);
}

// u p d a t e s   f o r   I n t e r n a l    r e l a t i o n s
if (isset($destination) && $cfgRelation['relwork']) {

    foreach ($destination as $master_field => $foreign_string) {
        $upd_query = false;
        if (! empty($foreign_string)) {
            $foreign_string = trim($foreign_string, '`');
            list($foreign_db, $foreign_table, $foreign_field) =
                explode('.', $foreign_string);
            if (! isset($existrel[$master_field])) {
                $upd_query  = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
                            . '(master_db, master_table, master_field, foreign_db, foreign_table, foreign_field)'
                            . ' values('
                            . '\'' . PMA_sqlAddslashes($db) . '\', '
                            . '\'' . PMA_sqlAddslashes($table) . '\', '
                            . '\'' . PMA_sqlAddslashes($master_field) . '\', '
                            . '\'' . PMA_sqlAddslashes($foreign_db) . '\', '
                            . '\'' . PMA_sqlAddslashes($foreign_table) . '\','
                            . '\'' . PMA_sqlAddslashes($foreign_field) . '\')';
            } elseif ($existrel[$master_field]['foreign_db'] . '.' .$existrel[$master_field]['foreign_table'] . '.' . $existrel[$master_field]['foreign_field'] != $foreign_string) {
                $upd_query  = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation']) . ' SET'
                            . ' foreign_db       = \'' . PMA_sqlAddslashes($foreign_db) . '\', '
                            . ' foreign_table    = \'' . PMA_sqlAddslashes($foreign_table) . '\', '
                            . ' foreign_field    = \'' . PMA_sqlAddslashes($foreign_field) . '\' '
                            . ' WHERE master_db  = \'' . PMA_sqlAddslashes($db) . '\''
                            . ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\''
                            . ' AND master_field = \'' . PMA_sqlAddslashes($master_field) . '\'';
            } // end if... else....
        } elseif (isset($existrel[$master_field])) {
            $upd_query      = 'DELETE FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])
                            . ' WHERE master_db  = \'' . PMA_sqlAddslashes($db) . '\''
                            . ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\''
                            . ' AND master_field = \'' . PMA_sqlAddslashes($master_field) . '\'';
        } // end if... else....
        if ($upd_query) {
            PMA_query_as_cu($upd_query);
        }
    } // end while
} // end if (updates for internal relations)

// u p d a t e s    f o r    f o r e i g n    k e y s
// (for now, one index name only; we keep the definitions if the
// foreign db is not the same)
// I use $sql_query to be able to display directly the query via
// PMA_showMessage()

if (isset($_REQUEST['destination_foreign'])) {
    $display_query = '';
    $seen_error = false;
    foreach ($_REQUEST['destination_foreign'] as $master_field => $foreign_string) {
        if (! empty($foreign_string)) {
            $foreign_string = trim($foreign_string, '`');
            list($foreign_db, $foreign_table, $foreign_field) =
                explode('.', $foreign_string);
            if (!isset($existrel_foreign[$master_field])) {
                // no key defined for this field

                // The next few lines are repeated below, so they
                // could be put in an include file
                // Note: I tried to enclose the db and table name with
                // backquotes but MySQL 4.0.16 did not like the syntax
                // (for example: `base2`.`table1`)

                $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
                            . ' ADD FOREIGN KEY ('
                            . PMA_backquote($master_field) . ')'
                            . ' REFERENCES '
                            . PMA_backquote($foreign_db) . '.'
                            . PMA_backquote($foreign_table) . '('
                            . PMA_backquote($foreign_field) . ')';

                if (! empty($_REQUEST['on_delete'][$master_field])) {
                    $sql_query .= ' ON DELETE ' . $options_array[$_REQUEST['on_delete'][$master_field]];
                }
                if (! empty($_REQUEST['on_update'][$master_field])) {
                    $sql_query .= ' ON UPDATE ' . $options_array[$_REQUEST['on_update'][$master_field]];
                }
                $sql_query .= ';';
                $display_query .= $sql_query . "\n";
                // end repeated code

            } elseif (($existrel_foreign[$master_field]['foreign_db'] . '.' .$existrel_foreign[$master_field]['foreign_table'] . '.' . $existrel_foreign[$master_field]['foreign_field'] != $foreign_string)
              || ($_REQUEST['on_delete'][$master_field] != (!empty($existrel_foreign[$master_field]['on_delete']) ? $existrel_foreign[$master_field]['on_delete'] : ''))
              || ($_REQUEST['on_update'][$master_field] != (!empty($existrel_foreign[$master_field]['on_update']) ? $existrel_foreign[$master_field]['on_update'] : ''))
                   ) {
                // another foreign key is already defined for this field
                // or
                // an option has been changed for ON DELETE or ON UPDATE

                // remove existing key
                $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
                            . ' DROP FOREIGN KEY '
                            . PMA_backquote($existrel_foreign[$master_field]['constraint']) . ';';

                // I tried to send both in one query but it failed
                PMA_DBI_query($sql_query);
                $display_query .= $sql_query . "\n";

                // add another
                $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
                            . ' ADD FOREIGN KEY ('
                            . PMA_backquote($master_field) . ')'
                            . ' REFERENCES '
                            . PMA_backquote($foreign_db) . '.'
                            . PMA_backquote($foreign_table) . '('
                            . PMA_backquote($foreign_field) . ')';

                if (! empty($_REQUEST['on_delete'][$master_field])) {
                    $sql_query   .= ' ON DELETE '
                        . $options_array[$_REQUEST['on_delete'][$master_field]];
                }
                if (! empty($_REQUEST['on_update'][$master_field])) {
                    $sql_query   .= ' ON UPDATE '
                        . $options_array[$_REQUEST['on_update'][$master_field]];
                }
                $sql_query .= ';';
                $display_query .= $sql_query . "\n";

            } // end if... else....
        } elseif (isset($existrel_foreign[$master_field])) {
            $sql_query  = 'ALTER TABLE ' . PMA_backquote($table)
                    . ' DROP FOREIGN KEY '
                    . PMA_backquote($existrel_foreign[$master_field]['constraint']);
            $sql_query .= ';';
            $display_query .= $sql_query . "\n";
        } // end if... else....

        if (! empty($sql_query)) {
            PMA_DBI_try_query($sql_query);
            $tmp_error = PMA_DBI_getError();
            if (! empty($tmp_error)) {
                $seen_error = true;
            }
            if (substr($tmp_error, 1, 4) == '1216'
            ||  substr($tmp_error, 1, 4) == '1452') {
                PMA_mysqlDie($tmp_error, $sql_query, FALSE, '', FALSE);
                echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
            }
            if (substr($tmp_error, 1, 4) == '1005') {
                $message = PMA_Message::warning('strForeignKeyError');
                $message->addParam($master_field);
                $message->display();
                echo PMA_showMySQLDocu('manual_Table_types', 'InnoDB_foreign_key_constraints') . "\n";
            }
            unset($tmp_error);
            $sql_query = '';
        }
    } // end foreach
    if (!empty($display_query)) {
        if ($seen_error) {
            PMA_showMessage($strError, null, 'error');
        } else {
            PMA_showMessage($strSuccess, null, 'success');
        }
    }
} // end if isset($destination_foreign)


// U p d a t e s   f o r   d i s p l a y   f i e l d

if ($cfgRelation['displaywork'] && isset($display_field)) {
    $upd_query = false;
    if ($disp) {
        if ($display_field != '') {
            $upd_query = 'UPDATE ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
                       . ' SET display_field = \'' . PMA_sqlAddslashes($display_field) . '\''