예제 #1
0
 /**
  * Invoke method, every class will have its own
  * returns true/false on completion, setting both
  * errormsg and output as necessary
  */
 function invoke()
 {
     parent::invoke();
     $result = true;
     /// Set own core attributes
     $this->does_generate = ACTION_GENERATE_HTML;
     /// These are always here
     global $CFG, $XMLDB, $DB, $OUTPUT;
     /// Do the job, setting result as needed
     /// Get the dir containing the file
     $dirpath = required_param('dir', PARAM_PATH);
     $dirpath = $CFG->dirroot . $dirpath;
     /// Get the correct dirs
     if (!empty($XMLDB->dbdirs)) {
         $dbdir =& $XMLDB->dbdirs[$dirpath];
     } else {
         return false;
     }
     if (!empty($XMLDB->editeddirs)) {
         $editeddir =& $XMLDB->editeddirs[$dirpath];
         $structure =& $editeddir->xml_file->getStructure();
     }
     /// ADD YOUR CODE HERE
     $tableparam = optional_param('table', NULL, PARAM_CLEAN);
     $typeparam = optional_param('type', NULL, PARAM_CLEAN);
     /// If no table or type, show form
     if (!$tableparam || !$typeparam) {
         /// No postaction here
         $this->postaction = NULL;
         /// Get list of tables
         $selecttables = $DB->get_tables();
         /// Get list of statement types
         $typeoptions = array(XMLDB_STATEMENT_INSERT => xmldb_statement::getXMLDBStatementName(XMLDB_STATEMENT_INSERT), XMLDB_STATEMENT_UPDATE => xmldb_statement::getXMLDBStatementName(XMLDB_STATEMENT_UPDATE), XMLDB_STATEMENT_DELETE => xmldb_statement::getXMLDBStatementName(XMLDB_STATEMENT_DELETE), XMLDB_STATEMENT_CUSTOM => xmldb_statement::getXMLDBStatementName(XMLDB_STATEMENT_CUSTOM));
         if (!$selecttables) {
             $this->errormsg = 'No tables available to create statements';
             return false;
         }
         /// Now build the form
         $o = '<form id="form" action="index.php" method="post">';
         $o .= '<div>';
         $o .= '    <input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
         $o .= '    <input type="hidden" name ="action" value="new_statement" />';
         $o .= '    <input type="hidden" name ="postaction" value="edit_statement" />';
         $o .= '    <table id="formelements" class="boxaligncenter" cellpadding="5">';
         $o .= '      <tr><td><label for="type" accesskey="t">' . $this->str['statementtype'] . ' </label>' . $OUTPUT->select(html_select::make($typeoptions, 'type')) . '<label for="table" accesskey="a">' . $this->str['statementtable'] . ' </label>' . $OUTPUT->select(html_select::make($selecttables, 'table')) . '</td></tr>';
         $o .= '      <tr><td colspan="2" align="center"><input type="submit" value="' . $this->str['create'] . '" /></td></tr>';
         $o .= '      <tr><td colspan="2" align="center"><a href="index.php?action=edit_xml_file&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['back'] . ']</a></td></tr>';
         $o .= '    </table>';
         $o .= '</div></form>';
         $this->output = $o;
         /// If table, retrofit information and, if everything works,
         /// go to the table edit action
     } else {
         /// Get some params (table is mandatory here)
         $tableparam = required_param('table', PARAM_CLEAN);
         $typeparam = required_param('type', PARAM_CLEAN);
         /// Only insert is allowed :-/
         if ($typeparam != XMLDB_STATEMENT_INSERT) {
             $this->errormsg = 'Only insert of records is supported';
             return false;
         }
         /// Calculate the name of the statement
         $typename = xmldb_statement::getXMLDBStatementName($typeparam);
         $name = trim(strtolower($typename . ' ' . $tableparam));
         /// Check that this Statement hasn't been created before
         if ($structure->getStatement($name)) {
             $this->errormsg = 'The statement "' . $name . '" already exists, please use it to add more sentences';
             return false;
         }
         /// Create one new xmldb_statement
         $statement = new xmldb_statement($name);
         $statement->setType($typeparam);
         $statement->setTable($tableparam);
         $statement->setComment('Initial ' . $typename . ' of records on table ' . $tableparam);
         /// Finally, add the whole retroffited table to the structure
         /// in the place specified
         $structure->addStatement($statement);
     }
     /// Launch postaction if exists (leave this here!)
     if ($this->getPostAction() && $result) {
         return $this->launch($this->getPostAction());
     }
     /// Return ok if arrived here
     return $result;
 }