tbl_alter.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Alter one or more table columns
   5  *
   6  * linked from table_structure, uses libraries/tbl_properties.inc.php to display
   7  * form and handles this form data
   8  *
   9  * @package PhpMyAdmin
  10  */
  11
  12 /**
  13  * Gets some core libraries
  14  */
  15 require_once './libraries/common.inc.php';
  16
  17 require_once './libraries/header.inc.php';
  18
  19 if (isset($_REQUEST['field'])) {
  20     $GLOBALS['field'] = $_REQUEST['field'];
  21 }
  22
  23 // Check parameters
  24 PMA_checkParameters(array('db', 'table'));
  25
  26 /**
  27  * Gets tables informations
  28  */
  29 require_once './libraries/tbl_common.php';
  30 require_once './libraries/tbl_info.inc.php';
  31
  32 $active_page = 'tbl_structure.php';
  33
  34 /**
  35  * Defines the url to return to in case of error in a sql statement
  36  */
  37 $err_url = 'tbl_structure.php?' . PMA_generate_common_url($db, $table);
  38
  39
  40 /**
  41  * Modifications have been submitted -> updates the table
  42  */
  43 $abort = false;
  44 if (isset($_REQUEST['do_save_data'])) {
  45     $field_cnt = count($_REQUEST['field_orig']);
  46     $key_fields = array();
  47     $changes = array();
  48
  49     for ($i = 0; $i < $field_cnt; $i++) {
  50         $changes[] = 'CHANGE ' . PMA_Table::generateAlter(
  51             $_REQUEST['field_orig'][$i],
  52             $_REQUEST['field_name'][$i],
  53             $_REQUEST['field_type'][$i],
  54             $_REQUEST['field_length'][$i],
  55             $_REQUEST['field_attribute'][$i],
  56             isset($_REQUEST['field_collation'][$i])
  57                 ? $_REQUEST['field_collation'][$i]
  58                 : '',
  59             isset($_REQUEST['field_null'][$i])
  60                 ? $_REQUEST['field_null'][$i]
  61                 : 'NOT NULL',
  62             $_REQUEST['field_default_type'][$i],
  63             $_REQUEST['field_default_value'][$i],
  64             isset($_REQUEST['field_extra'][$i])
  65                 ? $_REQUEST['field_extra'][$i]
  66                 : false,
  67             isset($_REQUEST['field_comments'][$i])
  68                 ? $_REQUEST['field_comments'][$i]
  69                 : '',
  70             $key_fields,
  71             $i,
  72             $_REQUEST['field_default_orig'][$i]
  73         );
  74     } // end for
  75
  76     // Builds the primary keys statements and updates the table
  77     $key_query = '';
  78     /**
  79      * this is a little bit more complex
  80      *
  81      * @todo if someone selects A_I when altering a column we need to check:
  82      *  - no other column with A_I
  83      *  - the column has an index, if not create one
  84      *
  85     if (count($key_fields)) {
  86         $fields = array();
  87         foreach ($key_fields as $each_field) {
  88             if (isset($_REQUEST['field_name'][$each_field]) && strlen($_REQUEST['field_name'][$each_field])) {
  89                 $fields[] = PMA_backquote($_REQUEST['field_name'][$each_field]);
  90             }
  91         } // end for
  92         $key_query = ', ADD KEY (' . implode(', ', $fields) . ') ';
  93     }
  94      */
  95
  96     // To allow replication, we first select the db to use and then run queries
  97     // on this db.
  98     PMA_DBI_select_db($db) or PMA_mysqlDie(PMA_DBI_getError(), 'USE ' . PMA_backquote($db) . ';', '', $err_url);
  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         $btnDrop = 'Fake';
 106
 107         /**
 108          * If comments were sent, enable relation stuff
 109          */
 110         include_once './libraries/transformations.lib.php';
 111
 112         // updaet field names in relation
 113         if (isset($_REQUEST['field_orig']) && is_array($_REQUEST['field_orig'])) {
 114             foreach ($_REQUEST['field_orig'] as $fieldindex => $fieldcontent) {
 115                 if ($_REQUEST['field_name'][$fieldindex] != $fieldcontent) {
 116                     PMA_REL_renameField($db, $table, $fieldcontent,
 117                         $_REQUEST['field_name'][$fieldindex]);
 118                 }
 119             }
 120         }
 121
 122         // update mime types
 123         if (isset($_REQUEST['field_mimetype'])
 124          && is_array($_REQUEST['field_mimetype'])
 125          && $cfg['BrowseMIME']) {
 126             foreach ($_REQUEST['field_mimetype'] as $fieldindex => $mimetype) {
 127                 if (isset($_REQUEST['field_name'][$fieldindex])
 128                  && strlen($_REQUEST['field_name'][$fieldindex])) {
 129                     PMA_setMIME($db, $table, $_REQUEST['field_name'][$fieldindex],
 130                         $mimetype,
 131                         $_REQUEST['field_transformation'][$fieldindex],
 132                         $_REQUEST['field_transformation_options'][$fieldindex]);
 133                 }
 134             }
 135         }
 136
 137         if ( $_REQUEST['ajax_request'] == true) {
 138             $extra_data['sql_query'] = PMA_showMessage(null, $sql_query);
 139             PMA_ajaxResponse($message, $message->isSuccess(), $extra_data);
 140         }
 141
 142         $active_page = 'tbl_structure.php';
 143         include './tbl_structure.php';
 144     } else {
 145         PMA_mysqlDie('', '', '', $err_url, false);
 146         // An error happened while inserting/updating a table definition.
 147         // to prevent total loss of that data, we embed the form once again.
 148         // The variable $regenerate will be used to restore data in libraries/tbl_properties.inc.php
 149         if (isset($_REQUEST['orig_field'])) {
 150             $_REQUEST['field'] = $_REQUEST['orig_field'];
 151         }
 152
 153         $regenerate = true;
 154     }
 155 }
 156
 157 /**
 158  * No modifications yet required -> displays the table fields
 159  *
 160  * $selected comes from multi_submits.inc.php
 161  */
 162 if ($abort == false) {
 163     if ($_REQUEST['ajax_request'] != true) {
 164         include_once './libraries/tbl_links.inc.php';
 165     }
 166
 167     if (! isset($selected)) {
 168         PMA_checkParameters(array('field'));
 169         $selected[]   = $_REQUEST['field'];
 170         $selected_cnt = 1;
 171     } else { // from a multiple submit
 172         $selected_cnt = count($selected);
 173     }
 174
 175     /**
 176      * @todo optimize in case of multiple fields to modify
 177      */
 178     for ($i = 0; $i < $selected_cnt; $i++) {
 179         $fields_meta[] = PMA_DBI_get_columns($db, $table, $selected[$i], true);
 180     }
 181     $num_fields  = count($fields_meta);
 182     $action      = 'tbl_alter.php';
 183
 184     // Get more complete field information.
 185     // For now, this is done to obtain MySQL 4.1.2+ new TIMESTAMP options
 186     // and to know when there is an empty DEFAULT value.
 187     // Later, if the analyser returns more information, it
 188     // could be executed to replace the info given by SHOW FULL COLUMNS FROM.
 189     /**
 190      * @todo put this code into a require()
 191      * or maybe make it part of PMA_DBI_get_columns();
 192      */
 193
 194     // We also need this to correctly learn if a TIMESTAMP is NOT NULL, since
 195     // SHOW FULL COLUMNS says NULL and SHOW CREATE TABLE says NOT NULL (tested
 196     // in MySQL 4.0.25).
 197
 198     $show_create_table = PMA_DBI_fetch_value('SHOW CREATE TABLE ' . PMA_backquote($db) . '.' . PMA_backquote($table), 0, 1);
 199     $analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($show_create_table));
 200     unset($show_create_table);
 201     /**
 202      * Form for changing properties.
 203      */
 204     include './libraries/tbl_properties.inc.php';
 205 }
 206
 207
 208 /**
 209  * Displays the footer
 210  */
 211 require './libraries/footer.inc.php';
 212 ?>