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  */
  11
  12 /**
  13  * Gets some core libraries
  14  */
  15 require_once './libraries/common.inc.php';
  16 require_once './libraries/Table.class.php';
  17
  18 $GLOBALS['js_include'][] = 'functions.js';
  19 require_once './libraries/header.inc.php';
  20
  21 // Check parameters
  22 PMA_checkParameters(array('db', 'table'));
  23
  24 /**
  25  * Gets tables informations
  26  */
  27 require_once './libraries/tbl_common.php';
  28 require_once './libraries/tbl_info.inc.php';
  29
  30 $active_page = 'tbl_structure.php';
  31
  32 /**
  33  * Defines the url to return to in case of error in a sql statement
  34  */
  35 $err_url = 'tbl_structure.php?' . PMA_generate_common_url($db, $table);
  36
  37
  38 /**
  39  * Modifications have been submitted -> updates the table
  40  */
  41 $abort = false;
  42 if (isset($_REQUEST['do_save_data'])) {
  43     $field_cnt = count($_REQUEST['field_orig']);
  44     $key_fields = array();
  45     $changes = array();
  46
  47     for ($i = 0; $i < $field_cnt; $i++) {
  48         $changes[] = 'CHANGE ' . PMA_Table::generateAlter(
  49             $_REQUEST['field_orig'][$i],
  50             $_REQUEST['field_name'][$i],
  51             $_REQUEST['field_type'][$i],
  52             $_REQUEST['field_length'][$i],
  53             $_REQUEST['field_attribute'][$i],
  54             isset($_REQUEST['field_collation'][$i])
  55                 ? $_REQUEST['field_collation'][$i]
  56                 : '',
  57             isset($_REQUEST['field_null'][$i])
  58                 ? $_REQUEST['field_null'][$i]
  59                 : 'NOT NULL',
  60             $_REQUEST['field_default_type'][$i],
  61             $_REQUEST['field_default_value'][$i],
  62             isset($_REQUEST['field_extra'][$i])
  63                 ? $_REQUEST['field_extra'][$i]
  64                 : false,
  65             isset($_REQUEST['field_comments'][$i])
  66                 ? $_REQUEST['field_comments'][$i]
  67                 : '',
  68             $key_fields,
  69             $i,
  70             $_REQUEST['field_default_orig'][$i]
  71         );
  72     } // end for
  73
  74     // Builds the primary keys statements and updates the table
  75     $key_query = '';
  76     /**
  77      * this is a little bit more complex
  78      *
  79      * @todo if someone selects A_I when altering a column we need to check:
  80      *  - no other column with A_I
  81      *  - the column has an index, if not create one
  82      *
  83     if (count($key_fields)) {
  84         $fields = array();
  85         foreach ($key_fields as $each_field) {
  86             if (isset($_REQUEST['field_name'][$each_field]) && strlen($_REQUEST['field_name'][$each_field])) {
  87                 $fields[] = PMA_backquote($_REQUEST['field_name'][$each_field]);
  88             }
  89         } // end for
  90         $key_query = ', ADD KEY (' . implode(', ', $fields) . ') ';
  91     }
  92      */
  93
  94     // To allow replication, we first select the db to use and then run queries
  95     // on this db.
  96     PMA_DBI_select_db($db) or PMA_mysqlDie(PMA_DBI_getError(), 'USE ' . PMA_backquote($db) . ';', '', $err_url);
  97     // Optimization fix - 2 May 2001 - Robbat2
  98     $sql_query = 'ALTER TABLE ' . PMA_backquote($table) . ' ' . implode(', ', $changes) . $key_query;
  99     $result    = PMA_DBI_try_query($sql_query);
 100
 101     if ($result !== false) {
 102         $message = PMA_Message::success('strTableAlteredSuccessfully');
 103         $message->addParam($table);
 104         $btnDrop = 'Fake';
 105
 106         /**
 107          * If comments were sent, enable relation stuff
 108          */
 109         require_once './libraries/relation.lib.php';
 110         require_once './libraries/transformations.lib.php';
 111
 112         // updaet field names in relation
 113         if (isset($_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         $active_page = 'tbl_structure.php';
 138         require './tbl_structure.php';
 139     } else {
 140         PMA_mysqlDie('', '', '', $err_url, false);
 141         // garvin: An error happened while inserting/updating a table definition.
 142         // to prevent total loss of that data, we embed the form once again.
 143         // The variable $regenerate will be used to restore data in libraries/tbl_properties.inc.php
 144         if (isset($_REQUEST['orig_field'])) {
 145             $_REQUEST['field'] = $_REQUEST['orig_field'];
 146         }
 147
 148         $regenerate = true;
 149     }
 150 }
 151
 152 /**
 153  * No modifications yet required -> displays the table fields
 154  *
 155  * $selected comes from multi_submits.inc.php
 156  */
 157 if ($abort == false) {
 158     if (! isset($selected)) {
 159         PMA_checkParameters(array('field'));
 160         $selected[]   = $_REQUEST['field'];
 161         $selected_cnt = 1;
 162     } else { // from a multiple submit
 163         $selected_cnt = count($selected);
 164     }
 165
 166     /**
 167      * @todo optimize in case of multiple fields to modify
 168      */
 169     for ($i = 0; $i < $selected_cnt; $i++) {
 170         $_REQUEST['field'] = PMA_sqlAddslashes($selected[$i], true);
 171         $result        = PMA_DBI_query('SHOW FULL FIELDS FROM ' . PMA_backquote($table) . ' FROM ' . PMA_backquote($db) . ' LIKE \'' . $_REQUEST['field'] . '\';');
 172         $fields_meta[] = PMA_DBI_fetch_assoc($result);
 173         PMA_DBI_free_result($result);
 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 just for MySQL 4.1.2+ new TIMESTAMP options
 180     // but later, if the analyser returns more information, it
 181     // could be executed for any MySQL version and replace
 182     // the info given by SHOW FULL FIELDS FROM.
 183     /**
 184      * @todo put this code into a require()
 185      * or maybe make it part of PMA_DBI_get_fields();
 186      */
 187
 188     if (PMA_MYSQL_INT_VERSION < 50025) {
 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         $show_create_table = PMA_DBI_fetch_value(
 194             'SHOW CREATE TABLE ' . PMA_backquote($db) . '.' . PMA_backquote($table),
 195             0, 1);
 196         $analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($show_create_table));
 197     }
 198
 199     /**
 200      * Form for changing properties.
 201      */
 202     require './libraries/tbl_properties.inc.php';
 203 }
 204
 205
 206 /**
 207  * Displays the footer
 208  */
 209 require_once './libraries/footer.inc.php';
 210 ?>