basic.inc.php

PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

<?php

/**
 * $Id: basic.inc.php 8387 2008-04-22 16:36:04Z kevin_fourie $
 *
 * KnowledgeTree Community Edition
 * Document Management Made Simple
 * Copyright (C) 2008 KnowledgeTree Inc.
 * Portions copyright The Jam Warehouse Software (Pty) Limited
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 3 as published by the
 * Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco, 
 * California 94120-7775, or email [e-mail].
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * KnowledgeTree" logo and retain the original copyright notice. If the display of the 
 * logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
 * must display the words "Powered by KnowledgeTree" and retain the original 
 * copyright notice.
 * Contributor( s): ______________________________________
 *
 */

require_once(KT_LIB_DIR . '/dispatcher.inc.php');
require_once(KT_LIB_DIR . '/metadata/fieldset.inc.php');
require_once(KT_LIB_DIR . '/widgets/forms.inc.php');
require_once(KT_LIB_DIR . '/plugins/pluginutil.inc.php');
require_once(KT_LIB_DIR . "/documentmanagement/MDTree.inc");

class BasicFieldsetManagementDispatcher extends KTAdminDispatcher {
    var $bAutomaticTransaction = true;
    var $bHaveConditional = null;
    var $sHelpPage = 'ktcore/admin/document fieldsets.html';

    function predispatch() {
        $this->persistParams(array('fFieldId'));
        $this->oFieldset = KTFieldset::get(KTUtil::arrayGet($_REQUEST, 'fFieldsetId'));
        if (PEAR::isError($this->oFieldset)) {
            $this->oFieldset = null;
            unset($_REQUEST['fFieldsetId']); // prevent further attacks.
        }
        $this->oField = DocumentField::get(KTUtil::arrayGet($_REQUEST, 'fFieldId'));
        if (PEAR::isError($this->oField)) {
            $this->oField = null;
            unset($_REQUEST['fFieldId']); // prevent further attacks.
        } else {
            $this->aBreadcrumbs[] = array('url' => KTUtil::addQueryStringSelf($this->meldPersistQuery("","managefield")), 'name' => $this->oField->getName());
        }
    }

    // API:  this provides information about the fieldset, including which actions are available.
    function describe_fieldset($oFieldset) {
        $this->persistParams(array('fFieldsetId','action'));
        $oTemplate =& $this->oValidator->validateTemplate('ktcore/metadata/admin/basic_overview');
        $oTemplate->setData(array(
            'context' => $this,
            'fields' => $oFieldset->getFields(),
        ));
        return $oTemplate->render();
    }

    function do_main () {
        return _kt("Something very unexpected happened.");
    }

    function getFieldTypeVocab() {
        $types = array(
            'normal' => _kt("Normal (String)"),
            'lookup' => _kt("Lookup"),
            'tree' => _kt("Tree"),
        );
        return $types;
    }

    function getDefaultType() {
        return 'normal';
    }

    function form_newfield() {
        $this->oPage->setBreadcrumbDetails(_kt('add field'));

        $oForm = new KTForm;
        $oForm->setOptions(array(
            'identifier' => 'ktcore.fieldsets.basic.field.create',
            'label' => _kt("Add New Field"),
            'submit_label' => _kt('Add Field'),
            'cancel_url' => $this->sParentUrl,
            'fail_action' => 'newfield',
            'action' => 'createfield',
            'context' => $this,
        ));

        $type_vocab = $this->getFieldTypeVocab();

        $oForm->setWidgets(array(
            array('ktcore.widgets.string',array(
                'label' => _kt("Field Name"),
                'name' => 'name',
                'required' => true,
                'description' => _kt("Within a given fieldset, each field needs a unique name."),
            )),
            array('ktcore.widgets.text',array(
                'label' => _kt("Description"),
                'name' => 'description',
                'required' => true,
                'description' => _kt("A good description can be the difference between useful metadata and poor metadata.  At the same time, overly long descriptions are far less valuable than concise ones."),
            )),
            array('ktcore.widgets.selection', array(
                'label' => _kt('Field Type'),
                'name' => 'field_type',
                'vocab' => $this->getFieldTypeVocab(),
                'description' => _kt("Different types of fields may be available, depending on the system."),
                'required' => true,
                'value' => $this->getDefaultType(),
            )),
            array('ktcore.widgets.boolean',array(
                'label' => _kt("Required"),
                'name' => 'required',
                'description' => _kt("Required fields must be filled in, or the adding process will be rejected."),
            )),

        ));

        $oForm->setValidators(array(
            array('ktcore.validators.string', array(
                'test' => 'name',
                'output' => 'name',
            )),
            array('ktcore.validators.string', array(
                'test' => 'description',
                'output' => 'description',
            )),
            array('ktcore.validators.boolean', array(
                'test' => 'required',
                'output' => 'required',
            )),
            array('ktcore.validators.string', array(
                'test' => 'field_type',
                'output' => 'field_type',
            )),
        ));

        return $oForm;
    }

    function do_newfield() {
        $oForm = $this->form_newfield();

        return $oForm->render();
    }

    function do_createfield() {
        $oForm = $this->form_newfield();
        $res = $oForm->validate();

        $data = $res['results'];
        $errors = $res['errors'];
        $extra_errors = array();

        $oField = DocumentField::getByFieldsetAndName($this->oFieldset, $data['name']);
        if (!PEAR::isError($oField)) {
            $extra_errors['name'] = _kt("A field with that name already exists in this fieldset.");
        }

        if (!empty($errors) || !empty($extra_errors)) {
            return $oForm->handleError(null, $extra_errors);
        }

        $lookup = false;
        $tree = false;

        if ($data['field_type'] == 'lookup') {
            $lookup = true;
        } else if ($data['field_type'] == 'tree') {
            $lookup = true;
            $tree = true;
        }

        $oField = DocumentField::createFromArray(array(
            'Name' => $data['name'],
            'Description' => $data['description'],
            'DataType' => 'STRING',
            'IsGeneric' => false,
            'HasLookup' => $lookup,
            'HasLookupTree' => $tree,
            'ParentFieldset' => $this->oFieldset->getId(),
            'IsMandatory' => $data['required'],
        ));

        if (PEAR::isError($oField)) {
            return $oForm->handleError(sprintf(_kt("Unable to create field: %s"), $oField->getMessage()));
        }

        $this->successRedirectTo('managefield', _kt("Field created."), sprintf('fFieldId=%d', $oField->getId()));
    }

    function form_editfield($oField) {
        $oForm = new KTForm;
        $oForm->setOptions(array(
            'identifier' => 'ktcore.fieldsets.basic.field.edit',
            'label' => _kt("Edit Field"),
            'submit_label' => _kt('Update Field'),
            'cancel_url' => $this->sParentUrl,
            'fail_action' => 'managefield',
            'action' => 'updatefield',
            'context' => $this,
        ));

        $oForm->setWidgets(array(
            array('ktcore.widgets.string',array(
                'label' => _kt("Field Name"),
                'name' => 'name',
                'value' => sanitizeForHTML($oField->getName()),
                'required' => true,
                'description' => _kt("Within a given fieldset, each field needs a unique name."),
            )),
            array('ktcore.widgets.text',array(
                'label' => _kt("Description"),
                'name' => 'description',
                'value' => sanitizeForHTML($oField->getDescription()),
                'required' => true,
                'description' => _kt("A good description can be the difference between useful metadata and poor metadata.  At the same time, overly long descriptions are far less valuable than concise ones."),
            )),
            array('ktcore.widgets.boolean',array(
                'label' => _kt("Required"),
                'value' => $oField->getIsMandatory(),
                'name' => 'required',
                'description' => _kt("Required fields must be filled in, or the adding process will be rejected."),
            )),

        ));

        $oForm->setValidators(array(
            array('ktcore.validators.string', array(
                'test' => 'name',
                'output' => 'name',
            )),
            array('ktcore.validators.string', array(
                'test' => 'description',
                'output' => 'description',
            )),
            array('ktcore.validators.boolean', array(
                'test' => 'required',
                'output' => 'required',
            )),
        ));

        return $oForm;
    }

    function do_managefield() {
        $oTemplate = $this->oValidator->validateTemplate('ktcore/metadata/admin/manage_field');

        $oTemplate->setData(array(
            'context' => $this,
            'field_name' => $this->oField->getName(),
            'field_id' => $this->oField->getId(),
            'form' => $this->form_editfield($this->oField),
            'field' => $this->oField,
        ));
        return $oTemplate->render();
    }

    function do_updatefield() {
        $oForm = $this->form_editfield($this->oField);
        $res = $oForm->validate();
        $data = $res['results'];
        $errors = $res['errors'];
        $extra_errors = array();

        // check that the field name either hasn't changed, or doesn't exist.
        if ($data['name'] != $this->oField->getName()) {
            $oOldField = DocumentField::getByFieldsetAndName($this->oFieldset, $data['name']);
            if (!PEAR::isError($oOldField)) {