JQGrid 4.4.0：“日期”格式化程序 srcformat/newformat 现在尝试在源日期的格式与 srcformat 不匹配时格式化日期

Question

我有一个包含日期列的 JQGrid。我使用日期格式化程序将日期格式化为m/d/Y 格式。以前，如果源日期的格式与我传入的formatoptions 中的srcformat 不匹配，它就不会格式化日期。无论源格式如何，JQGrid v4.4.0 现在都尝试格式化日期，并提出了很远的日期:-)。

我填充到此列中的日期可能已经是正确的格式 (m/d/Y)，也可能是我在 srcformat (Y-m-dTH:i:s) 中定义的格式。

在 JQGrid 4.4.0 中是否有办法不尝试解析与 srcformat 不匹配的日期？

---

列的我的 colModel def：

{name:"date", index:"date", label:"Date", width:85, jsonmap:"date", hidden: false, formatter:'date', sorttype: 'date', formatoptions:{srcformat:'Y-m-dTH:i:s', newformat:'m/d/Y'}, searchrules: { date: true } }        

Answer 1

我解决了我自己的问题:)

我创建了一个自定义格式化程序并使用 Datejs JQuery 库来帮助解析日期。

如果日期是 Y-m-dTH:i:s 格式，基本上格式化程序只会将日期格式化为 m/d/Y 格式；否则，它假定它已经是 m/d/Y 格式并保持不变。

/**
 * This function formats the date column for the summary grid.
 * 
 * The grid could be populated with dates that are in m/d/Y format or in Y-m-dTH:i:s format; need
 * to account for this; want the dates to end up being in m/d/Y format always.
 * 
 * @param cellvalue     is the value to be formatted
 * @param options       an object containing the following element
 *                      options : { rowId: rid, colModel: cm} where rowId - is the id of the row colModel is the object of the properties for this column getted from colModel array of jqGrid
 * @param rowObject     is a row data represented in the format determined from datatype option;
 *                      the rowObject is array, provided according to the rules from jsonReader
 * @return              the new formatted cell value html
 */
function summaryGridDateFormatter(cellvalue, options, rowObject) {

    // parseExact just returns 'null' if the date you are trying to 
    // format is not in the exact format specified
    var parsedDate = Date.parseExact(cellvalue, "yyyy-MM-ddTHH:mm:ss"); 

    // if parsed date is null, just used the passed cell value; otherwise, 
    // transform the date to desired format
    var formattedDate = parsedDate ? parsedDate.toString("MM/dd/yyyy") : cellvalue;

    return formattedDate;
}

Answer 2

@icats：谢谢！它真的很有帮助 - 我开始变得非常沮丧......

实际上我不得不稍微修改一下你的函数。 我从数据库中获得了一个 timestamp 字段，该字段通过 JSON 作为 毫秒 的值返回（即，实际值类似于：1343314489564）。因此，我添加了对 parsedDate 的第二次检查，如下所示：

/**
 * This function formats the date column for the  grid.
 *
 * The grid could be populated with dates that are in m/d/Y format or in Y-m-dTH:i:s format; need
 * to account for this; want the dates to end up being in m/d/Y format always.
 *
 * @param cellvalue     is the value to be formatted
 * @param options       an object containing the following element
 *                      options : { rowId: rid, colModel: cm} where rowId - is the id of the row colModel is the object of the properties for this column getted from colModel array of jqGrid
 * @param rowObject     is a row data represented in the format determined from datatype option;
 *                      the rowObject is array, provided according to the rules from jsonReader
 * @return              the new formatted cell value html
 */
function dateFormatter(cellvalue, options, rowObject) {

    // parseExact just returns 'null' if the date you are trying to
    // format is not in the exact format specified
    var parsedDate = Date.parseExact(cellvalue, "yyyy-MM-ddTHH:mm:ss");
    if(parsedDate == null )
        parsedDate = new Date(cellvalue);

    // if parsed date is null, just used the passed cell value; otherwise,
    // transform the date to desired format
    var formattedDate = parsedDate ? parsedDate.toString("yyyy-MM-dd HH:mm:ss") : cellvalue;

    return formattedDate;
}