tbl_alter.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Alter one or more table columns/fields
   5  *
   6  * linked from table_structure, uses libraries/tbl_properties.inc.php to display
   7  * form and handles this form data
   8  *
   9  * @version $Id$
  10  * @package phpMyAdmin
  11  */
  12
  13 /**
  14  * Gets some core libraries
  15  */
  16 require_once './libraries/common.inc.php';
  17 require_once './libraries/Table.class.php';
  18
  19 $GLOBALS['js_include'][] = 'functions.js';
  20 require_once './libraries/header.inc.php';
  21
  22 // Check parameters
  23 PMA_checkParameters(array('db', 'table'));
  24
  25 /**
  26  * Gets tables informations
  27  */
  28 require_once './libraries/tbl_common.php';
  29 require_once './libraries/tbl_info.inc.php';
  30
  31 $active_page = 'tbl_structure.php';
  32
  33 /**
  34  * Defines the url to return to in case of error in a sql statement
  35  */
  36 $err_url = 'tbl_structure.php?' . PMA_generate_common_url($db, $table);
  37
  38
  39 /**
  40  * Modifications have been submitted -> updates the table
  41  */
  42 $abort = false;
  43 if (isset($_REQUEST['do_save_data'])) {
  44     $field_cnt = count($_REQUEST['field_orig']);
  45     $key_fields = array();
  46     $changes = array();
  47
  48     for ($i = 0; $i < $field_cnt; $i++) {
  49         $changes[] = 'CHANGE ' . PMA_Table::generateAlter(
  50             $_REQUEST['field_orig'][$i],
  51             $_REQUEST['field_name'][$i],
  52             $_REQUEST['field_type'][$i],
  53             $_REQUEST['field_length'][$i],
  54             $_REQUEST['field_attribute'][$i],
  55             isset($_REQUEST['field_collation'][$i])
  56                 ? $_REQUEST['field_collation'][$i]
  57                 : '',
  58             isset($_REQUEST['field_null'][$i])
  59                 ? $_REQUEST['field_null'][$i]
  60                 : 'NOT NULL',
  61             $_REQUEST['field_default_type'][$i],
  62             $_REQUEST['field_default_value'][$i],
  63             isset($_REQUEST['field_extra'][$i])
  64                 ? $_REQUEST['field_extra'][$i]
  65                 : false,
  66             isset($_REQUEST['field_comments'][$i])
  67                 ? $_REQUEST['field_comments'][$i]
  68                 : '',
  69             $key_fields,
  70             $i,
  71             $_REQUEST['field_default_orig'][$i]
  72         );
  73     } // end for
  74
  75     // Builds the primary keys statements and updates the table
  76     $key_query = '';
  77     /**
  78      * this is a little bit more complex
  79      *
  80      * @todo if someone selects A_I when altering a column we need to check:
  81      *  - no other column with A_I
  82      *  - the column has an index, if not create one
  83      *
  84     if (count($key_fields)) {
  85         $fields = array();
  86         foreach ($key_fields as $each_field) {
  87             if (isset($_REQUEST['field_name'][$each_field]) && strlen($_REQUEST['field_name'][$each_field])) {
  88                 $fields[] = PMA_backquote($_REQUEST['field_name'][$each_field]);
  89             }
  90         } // end for
  91         $key_query = ', ADD KEY (' . implode(', ', $fields) . ') ';
  92     }
  93      */
  94
  95     // To allow replication, we first select the db to use and then run queries
  96     // on this db.
  97     PMA_DBI_select_db($db) or PMA_mysqlDie(PMA_DBI_getError(), 'USE ' . PMA_backquote($db) . ';', '', $err_url);
  98     // Optimization fix - 2 May 2001 - Robbat2
  99     $sql_query = 'ALTER TABLE ' . PMA_backquote($table) . ' ' . implode(', ', $changes) . $key_query;
 100     $result    = PMA_DBI_try_query($sql_query);
 101
 102     if ($result !== false) {
 103         $message = PMA_Message::success(__('Table %1$s has been altered successfully'));
 104         $message->addParam($table);
 105         $btnDrop = 'Fake';
 106
 107         /**
 108          * If comments were sent, enable relation stuff
 109          */
 110         require_once './libraries/relation.lib.php';
 111         require_once './libraries/transformations.lib.php';
 112
 113         // updaet field names in relation
 114         if (isset($_REQUEST['field_orig']) && is_array($_REQUEST['field_orig'])) {
 115             foreach ($_REQUEST['field_orig'] as $fieldindex => $fieldcontent) {
 116                 if ($_REQUEST['field_name'][$fieldindex] != $fieldcontent) {
 117                     PMA_REL_renameField($db, $table, $fieldcontent,
 118                         $_REQUEST['field_name'][$fieldindex]);
 119                 }
 120             }
 121         }
 122
 123         // update mime types
 124         if (isset($_REQUEST['field_mimetype'])
 125          && is_array($_REQUEST['field_mimetype'])
 126          && $cfg['BrowseMIME']) {
 127             foreach ($_REQUEST['field_mimetype'] as $fieldindex => $mimetype) {
 128                 if (isset($_REQUEST['field_name'][$fieldindex])
 129                  && strlen($_REQUEST['field_name'][$fieldindex])) {
 130                     PMA_setMIME($db, $table, $_REQUEST['field_name'][$fieldindex],
 131                         $mimetype,
 132                         $_REQUEST['field_transformation'][$fieldindex],
 133                         $_REQUEST['field_transformation_options'][$fieldindex]);
 134                 }
 135             }
 136         }
 137
 138         $active_page = 'tbl_structure.php';
 139         require './tbl_structure.php';
 140     } else {
 141         PMA_mysqlDie('', '', '', $err_url, false);
 142         // An error happened while inserting/updating a table definition.
 143         // to prevent total loss of that data, we embed the form once again.
 144         // The variable $regenerate will be used to restore data in libraries/tbl_properties.inc.php
 145         if (isset($_REQUEST['orig_field'])) {
 146             $_REQUEST['field'] = $_REQUEST['orig_field'];
 147         }
 148
 149         $regenerate = true;
 150     }
 151 }
 152
 153 /**
 154  * No modifications yet required -> displays the table fields
 155  *
 156  * $selected comes from multi_submits.inc.php
 157  */
 158 if ($abort == false) {
 159     if (! isset($selected)) {
 160         PMA_checkParameters(array('field'));
 161         $selected[]   = $_REQUEST['field'];
 162         $selected_cnt = 1;
 163     } else { // from a multiple submit
 164         $selected_cnt = count($selected);
 165     }
 166
 167     /**
 168      * @todo optimize in case of multiple fields to modify
 169      */
 170     for ($i = 0; $i < $selected_cnt; $i++) {
 171         $_REQUEST['field'] = PMA_sqlAddslashes($selected[$i], true);
 172         $result        = PMA_DBI_query('SHOW FULL FIELDS FROM ' . PMA_backquote($table) . ' FROM ' . PMA_backquote($db) . ' LIKE \'' . $_REQUEST['field'] . '\';');
 173         $fields_meta[] = PMA_DBI_fetch_assoc($result);
 174         PMA_DBI_free_result($result);
 175     }
 176     $num_fields  = count($fields_meta);
 177     $action      = 'tbl_alter.php';
 178
 179     // Get more complete field information.
 180     // For now, this is done to obtain MySQL 4.1.2+ new TIMESTAMP options
 181     // and to know when there is an empty DEFAULT value.
 182     // Later, if the analyser returns more information, it
 183     // could be executed to replace the info given by SHOW FULL FIELDS FROM.
 184     /**
 185      * @todo put this code into a require()
 186      * or maybe make it part of PMA_DBI_get_fields();
 187      */
 188
 189     // We also need this to correctly learn if a TIMESTAMP is NOT NULL, since
 190     // SHOW FULL FIELDS says NULL and SHOW CREATE TABLE says NOT NULL (tested
 191     // in MySQL 4.0.25).
 192
 193     $show_create_table = PMA_DBI_fetch_value('SHOW CREATE TABLE ' . PMA_backquote($db) . '.' . PMA_backquote($table), 0, 1);
 194     $analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($show_create_table));
 195     unset($show_create_table);
 196     /**
 197      * Form for changing properties.
 198      */
 199     require './libraries/tbl_properties.inc.php';
 200 }
 201
 202
 203 /**
 204  * Displays the footer
 205  */
 206 require_once './libraries/footer.inc.php';
 207 ?>