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 // Check parameters
  20 PMA_checkParameters(array('db', 'table'));
  21
  22 /**
  23  * Gets tables informations
  24  */
  25 require_once './libraries/tbl_common.php';
  26 require_once './libraries/tbl_info.inc.php';
  27
  28 $active_page = 'tbl_structure.php';
  29
  30 /**
  31  * Defines the url to return to in case of error in a sql statement
  32  */
  33 $err_url = 'tbl_structure.php?' . PMA_generate_common_url($db, $table);
  34
  35
  36 /**
  37  * Modifications have been submitted -> updates the table
  38  */
  39 $abort = false;
  40 if (isset($_REQUEST['do_save_data'])) {
  41     $field_cnt = count($_REQUEST['field_orig']);
  42     $key_fields = array();
  43     $changes = array();
  44
  45     for ($i = 0; $i < $field_cnt; $i++) {
  46         $changes[] = 'CHANGE ' . PMA_Table::generateAlter(
  47             $_REQUEST['field_orig'][$i],
  48             $_REQUEST['field_name'][$i],
  49             $_REQUEST['field_type'][$i],
  50             $_REQUEST['field_length'][$i],
  51             $_REQUEST['field_attribute'][$i],
  52             isset($_REQUEST['field_collation'][$i])
  53                 ? $_REQUEST['field_collation'][$i]
  54                 : '',
  55             isset($_REQUEST['field_null'][$i])
  56                 ? $_REQUEST['field_null'][$i]
  57                 : 'NOT NULL',
  58             $_REQUEST['field_default_type'][$i],
  59             $_REQUEST['field_default_value'][$i],
  60             isset($_REQUEST['field_extra'][$i])
  61                 ? $_REQUEST['field_extra'][$i]
  62                 : false,
  63             isset($_REQUEST['field_comments'][$i])
  64                 ? $_REQUEST['field_comments'][$i]
  65                 : '',
  66             $key_fields,
  67             $i,
  68             $_REQUEST['field_default_orig'][$i]
  69         );
  70     } // end for
  71
  72     // Builds the primary keys statements and updates the table
  73     $key_query = '';
  74     /**
  75      * this is a little bit more complex
  76      *
  77      * @todo if someone selects A_I when altering a column we need to check:
  78      *  - no other column with A_I
  79      *  - the column has an index, if not create one
  80      *
  81     if (count($key_fields)) {
  82         $fields = array();
  83         foreach ($key_fields as $each_field) {
  84             if (isset($_REQUEST['field_name'][$each_field]) && strlen($_REQUEST['field_name'][$each_field])) {
  85                 $fields[] = PMA_backquote($_REQUEST['field_name'][$each_field]);
  86             }
  87         } // end for
  88         $key_query = ', ADD KEY (' . implode(', ', $fields) . ') ';
  89     }
  90      */
  91
  92     // To allow replication, we first select the db to use and then run queries
  93     // on this db.
  94     PMA_DBI_select_db($db) or PMA_mysqlDie(PMA_DBI_getError(), 'USE ' . PMA_backquote($db) . ';', '', $err_url);
  95     $sql_query = 'ALTER TABLE ' . PMA_backquote($table) . ' ' . implode(', ', $changes) . $key_query;
  96     $result    = PMA_DBI_try_query($sql_query);
  97
  98     if ($result !== false) {
  99         $message = PMA_Message::success(__('Table %1$s has been altered successfully'));
 100         $message->addParam($table);
 101         $btnDrop = 'Fake';
 102
 103         /**
 104          * If comments were sent, enable relation stuff
 105          */
 106         include_once './libraries/transformations.lib.php';
 107
 108         // updaet field names in relation
 109         if (isset($_REQUEST['field_orig']) && is_array($_REQUEST['field_orig'])) {
 110             foreach ($_REQUEST['field_orig'] as $fieldindex => $fieldcontent) {
 111                 if ($_REQUEST['field_name'][$fieldindex] != $fieldcontent) {
 112                     PMA_REL_renameField($db, $table, $fieldcontent,
 113                         $_REQUEST['field_name'][$fieldindex]);
 114                 }
 115             }
 116         }
 117
 118         // update mime types
 119         if (isset($_REQUEST['field_mimetype'])
 120          && is_array($_REQUEST['field_mimetype'])
 121          && $cfg['BrowseMIME']) {
 122             foreach ($_REQUEST['field_mimetype'] as $fieldindex => $mimetype) {
 123                 if (isset($_REQUEST['field_name'][$fieldindex])
 124                  && strlen($_REQUEST['field_name'][$fieldindex])) {
 125                     PMA_setMIME($db, $table, $_REQUEST['field_name'][$fieldindex],
 126                         $mimetype,
 127                         $_REQUEST['field_transformation'][$fieldindex],
 128                         $_REQUEST['field_transformation_options'][$fieldindex]);
 129                 }
 130             }
 131         }
 132
 133         if ( $_REQUEST['ajax_request'] == true) {
 134             $extra_data['sql_query'] = PMA_showMessage(null, $sql_query);
 135             PMA_ajaxResponse($message, $message->isSuccess(), $extra_data);
 136         }
 137
 138         $active_page = 'tbl_structure.php';
 139         include './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     include_once './libraries/tbl_links.inc.php';
 160
 161     if (! isset($selected)) {
 162         PMA_checkParameters(array('field'));
 163         $selected[]   = $_REQUEST['field'];
 164         $selected_cnt = 1;
 165     } else { // from a multiple submit
 166         $selected_cnt = count($selected);
 167     }
 168
 169     /**
 170      * @todo optimize in case of multiple fields to modify
 171      */
 172     for ($i = 0; $i < $selected_cnt; $i++) {
 173         $fields_meta[] = PMA_DBI_get_columns($db, $table, $selected[$i], true);
 174     }
 175     $num_fields  = count($fields_meta);
 176     $action      = 'tbl_alter.php';
 177
 178     // Get more complete field information.
 179     // For now, this is done to obtain MySQL 4.1.2+ new TIMESTAMP options
 180     // and to know when there is an empty DEFAULT value.
 181     // Later, if the analyser returns more information, it
 182     // could be executed to replace the info given by SHOW FULL COLUMNS FROM.
 183     /**
 184      * @todo put this code into a require()
 185      * or maybe make it part of PMA_DBI_get_fields();
 186      */
 187
 188     // We also need this to correctly learn if a TIMESTAMP is NOT NULL, since
 189     // SHOW FULL COLUMNS says NULL and SHOW CREATE TABLE says NOT NULL (tested
 190     // in MySQL 4.0.25).
 191
 192     $show_create_table = PMA_DBI_fetch_value('SHOW CREATE TABLE ' . PMA_backquote($db) . '.' . PMA_backquote($table), 0, 1);
 193     $analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($show_create_table));
 194     unset($show_create_table);
 195     /**
 196      * Form for changing properties.
 197      */
 198     include './libraries/tbl_properties.inc.php';
 199 }
 200
 201
 202 /**
 203  * Displays the footer
 204  */
 205 require './libraries/footer.inc.php';
 206 ?>