grails - 如何使用带有Grails gui:datatable标签的自定义sortFunction？

Question

我在Grails中有一个数据表，其中有几个可排序的列。不幸的是，默认情况下排序区分大小写，因此“Zed”显示在“alice”之前。所以我想添加一个不区分大小写的自定义排序函数。我将以这种方式对用户名列进行排序。

我已经在http://developer.yahoo.com/yui/datatable/上阅读了有关sortOptions和sortFunction的信息，但似乎无法正常工作。

我在list.gsp中添加了以下JavaScript:

var caseInsensitiveSortFunction = function(a, b, desc, field) {
    // See http://developer.yahoo.com/yui/datatable/ and look for 'sortFunction'
    // Set this function name as the sortFunction option
    // Deal with empty values
    if (!YAHOO.lang.isValue(a)) {
        return (!YAHOO.lang.isValue(b)) ? 0 : 1;
    } else if (!YAHOO.lang.isValue(b)) {
        return -1;
    }

    return YAHOO.util.Sort.compare(String(a).toLowerCase(), String(b).toLowerCase(), desc);
};

这是同一页上的数据表定义:

<gui:dataTable id="userTable"
    controller="user" action="listJSON"
    rowsPerPage="20"
    sortedBy="username"
    columnDefs="[
                [key:'username', label:'Username', resizeable: false, sortable: true, sortOptions: { sortFunction: 'caseInsensitiveSortFunction' }],
                [key:'email', label:'Email', resizeable: false, sortable: true],
                [key:'firstName', label:'First Name', resizeable: false, sortable: true],
                [key:'lastName', label:'Last Name', resizeable: false, sortable: true],
                [key:'enabled', label:'Enabled', resizeable: false, sortable: true],
                [key:'accountLocked', label:'Locked', resizeable: false, sortable: true],
                [key:'roleDescription', label:'Role', resizeable: false, sortable: true]
            ]"
    draggableColumns="true"
    rowClickNavigation="true"
    paginatorConfig="[
            template:'{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {CurrentPageReport}',
            pageReportTemplate:'{totalRecords} total record(s)',
            alwaysVisible:true,
            containers:'dt-paginator'
            ]"/>
<div id="dt-paginator" class="yui-skin-sam yui-pg-container"></div> 

将“用户名”键更改为以下(无引号)无济于事。

                [key:'username', label:'Username', resizeable: false, sortable: true, sortOptions: { sortFunction: caseInsensitiveSortFunction }],

两种方法都产生以下来源。请注意，用户名的sortOptions为空白。

            <div id="dt_div_userTable"></div> 
            <script> 
            YAHOO.util.Event.onDOMReady(function () {
                var DataSource = YAHOO.util.DataSource,
                    DataTable  = YAHOO.widget.DataTable,
                    Paginator  = YAHOO.widget.Paginator;

                var userTable_ds = new DataSource('/admin/gpupUser/listJSON?');
                userTable_ds.responseType   = DataSource.TYPE_JSON;
                userTable_ds.connMethodPost=true;
                userTable_ds.responseSchema = {
                    resultsList : 'results',
                    fields      : ["username","email","firstName","lastName","enabled","accountLocked","roleDescription","dataUrl"],
                    metaFields  : {
                        totalRecords: 'totalRecords'
                    }
                };
                userTable_ds.doBeforeCallback = function(oRequest, oFullResponse, oParsedResponse, oCallback) {
                    return GRAILSUI.util.replaceDateStringsWithRealDates(oParsedResponse);
                };

                var userTable_paginator = new Paginator(
                    {'template': '{FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {CurrentPageReport}',
'pageReportTemplate': '{totalRecords} total record(s)',
'alwaysVisible': true,
'containers': 'dt-paginator',
'rowsPerPage': 20}
                );

                var registerEditorListener = function(editor, field, url,successCallback,failureCallback) {
                    editor.subscribe("saveEvent", function(oArgs) {
                        GRAILSUI.userTable.loadingDialog.show();
                        var editorCallback = {
                            success: successCallback,
                            failure: function(o) {
                                // revert the cell value
                                GRAILSUI.userTable.updateCell(oArgs.editor.getRecord(), field, oArgs.oldData);
                                // alert user
                                if (failureCallback)
                                  failureCallback(o);
                                else
                                  alert('Received an error during edit: ' + o.responseText);
                            }
                        };
                        YAHOO.util.Connect.asyncRequest('POST', url, editorCallback, 'id=' + oArgs.editor.getRecord().getData('id') + '&field=' + field + '&newValue=' + oArgs.newData);
                    });
                };



                var myColumnDefs = [{'key': 'username',
'label': 'Username',
'resizeable': false,
'sortable': true,
'sortOptions': }, {'key': 'email',
'label': 'Email',
'resizeable': false,
'sortable': true}, {'key': 'firstName',
'label': 'First Name',
'resizeable': false,
'sortable': true}, {'key': 'lastName',
'label': 'Last Name',
'resizeable': false,
'sortable': true}, {'key': 'enabled',
'label': 'Enabled',
'resizeable': false,
'sortable': true}, {'key': 'accountLocked',
'label': 'Locked',
'resizeable': false,
'sortable': true}, {'key': 'roleDescription',
'label': 'Role',
'resizeable': false,
'sortable': true}, {'key': 'dataUrl',
'type': 'dataDrillDown',
'hidden': true}];

                GRAILSUI.userTable = new GRAILSUI.DataTable('dt_div_userTable', myColumnDefs, userTable_ds, '', {
                    initialRequest         : 'max=20&offset=0&sort=username&order=asc&',
                    paginator              : userTable_paginator,
                    dynamicData            : true,
                    sortedBy               : {key: "username", dir: YAHOO.widget.DataTable.CLASS_ASC},
                    'draggableColumns': true,
'selectionMode': 'single',
'rowClickNavigate': false,
'rowClickMode': 'navigate',
'formatter': 'text'
                });
                // Update totalRecords on the fly with value from server
                GRAILSUI.userTable.handleDataReturnPayload = function(oRequest, oResponse, oPayload) {
                    oPayload.totalRecords = oResponse.meta.totalRecords;
                    return oPayload;
                };

                // Set up editing flow
                var highlightEditableCell = function(oArgs) {
                    var elCell = oArgs.target;
                    if(YAHOO.util.Dom.hasClass(elCell, "yui-dt-editable")) {
                        this.highlightCell(elCell);
                    }
                };
                GRAILSUI.userTable.subscribe("cellMouseoverEvent", highlightEditableCell);
                GRAILSUI.userTable.subscribe("cellMouseoutEvent", GRAILSUI.userTable.onEventUnhighlightCell);
                GRAILSUI.userTable.subscribe("cellClickEvent", GRAILSUI.userTable.onEventShowCellEditor);
            });
            </script> 

<div id="dt-paginator" class="yui-skin-sam yui-pg-container"></div>

当配置为标记时，有什么方法可以使数据表使用自定义sortFunction？

Answer 1

在listJSON操作中，将ignoreCase: true参数添加到list()。参见doc。这可能是唯一简单的方法。

如果要支持页面调度，则不能将完全自定义的函数从Javascript级别推送到数据库级别-自定义函数将仅对当前页面进行排序，但是分页将基于默认(通过id)排序。换句话说，自定义函数对于一页表最多只能正常工作。

如果您在Criteria操作中使用listJSON或SQL，则可以在某种程度上自定义排序，但仍然限于Hibernate或SQL级别。