actions/rest_form.php

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<?php
class dataface_actions_rest_form {
        function handle($params){
                session_write_close();
                $app = Dataface_Application::getInstance();
                $query = $app->getQuery();
                
                try {
                        
                        if ( @$query['--id'] ){
                                // This is a form for a particular record
                                
                                if ( @$query['-relationship'] ){
                                        // This is a related record form
                                        
                                
                                } else {
                                        // This is an edit form for a particular record
                                        
                                        $rec = df_get_record_by_id($query['--id']);
                                        if ( !$rec ){
                                                throw new Exception("Record could not be found");
                                        }
                                        if ( PEAR::isError($rec) ) throw new Exception($rec->getMessage());
                                        
                                        
                                        if ( !$rec->checkPermission('edit') ){
                                                throw new Exception("Failed to get edit form for record.  Permission denied");
                                        }
                                        
                                        $tableObj = $rec->_table;
                                        
                                        $fields = null;
                                        if ( @$query['--fields'] ){
                                                $fields = explode(',', $query['--fields']);
                                                
                                        } else {
                                                
                                                $temp = $tableObj->fields(false, false, true);
                                                $fields = array_keys($temp);
                                        
                                        }
                                        
                                        $form = array();
                                        
                                        
                                
                                
                                }
                                
                                
                        } else if ( @$query['-table'] ){
                                // This is a new record form for a particular table
                                $table = $query['-table'];
                                $tableObj = Dataface_Table::loadTable($table);
                                
                                $tablePerms = $tableObj->getPermissions();
                                
                                if ( !@$tablePerms['new'] ){
                                        throw new Exception("Failed to build form data because you do not have permission to create new records on this table.");
                                        
                                }
                                
                                
                                
                                
                                $fields = null;
                                if ( @$query['--fields'] ){
                                        $fields = explode(',', $query['--fields']);
                                        
                                } else {
                                        $temp = $tableObj->fields(false, false, true);
                                        $fields = array_keys($temp);
                                
                                }
                                
                                $form = array();
                                $defaults = array();
                                $valuelists = array();
                                
                                if ( !$fields ){
                                        throw new Exception("No fields were specified for the form.");
                                }
                                
                                foreach ($fields as $f){
                                
                                        $perms = $tableObj->getPermissions(array('field'=>$f));
                                        if ( !@$perms['new']){
                                                // No permission to create 'new' data on this field.
                                                continue;
                                        }
                                        
                                        $data = $tableObj->getField($f);
                                        
                                        $form[$f] = array(
                                                'widget'=>$data['widget']
                                        );
                                        
                                        $defaults[$f] = $tableObj->getDefaultValue($f);
                                        
                                        if ( @$data['vocabulary'] ){
                                                $form[$f]['vocabulary'] = $data['vocabulary'];
                                                if ( !isset($valuelists[$data['vocabulary']]) ){
                                                        $valuelists[$data['vocabulary']] = $tableObj->getValuelist($data['vocabulary']);
                                                        
                                                }
                                        }
                                        
                                        if ( @$data['validators'] ){
                                                $form[$f]['validators'] = $data['validators'];
                                        }
                                        
                                }
                                
                                $this->out(array(
                                        'code'=>200,
                                        'message'=>'Form successfully created',
                                        'form'=>$form,
                                        'defaults'=>$defaults,
                                        'valuelists'=>$valuelists
                                        
                                ));
                                exit;
                                
                                
                        
                        } else {
                        
                                throw new Exception("Invalid parameters for rest_form");
                        }
                
                } catch (Exception $ex){
                
                        $this->out(array(
                                'code' => $ex->getCode(),
                                'message' => $ex->getMessage()
                        ));
                        exit;
                }
                
        }
        
        function out($params){
                header('Content-type: text/json; charset="'.Dataface_Application::getInstance()->_conf['oe'].'"');
                echo json_encode($params);
        }
}