jqGrid rowNum选项问题 [英] jqGrid rowNum option issue
问题描述
假设在navgrid中行号从10更改为30，并且我们按如下方式处理onPaging:
Assume that row numbers is changed from 10 to 30 in navgrid and that we handle onPaging like so:
...
onPaging: function(pgbtn) {
var rowNum = $(this).getGridParam('rowNum');
return 'stop';
}
- 在jqGrid 4.4.0中，rowNum为30.
- 在jqGrid 4.7.0中，rowNum为10.
这是预期的行为，因为我认为rowNum应该为30?
Is this expected behaviour because I think rowNum should be 30?
推荐答案
The order of the execution is changed in (compare the line in jqGrid 4.7.0 with the line in jqGrid 4.4.0). jqGrid first changed the rowNum``and then calledonPaging` in jqGrid 4.4.0, but in jqFeid 4.7.0 the oder is changed.
要访问新的rowNum值，应直接从相应的<select>控件中获取rowNum的值.如果使用网格底部的pager，则相应的代码可能如下:
To access to the new value of rowNum one should get the value of rowNum from the corresponding <select> control directly. If you use the pager at the bottom of the grid then the corresponding code could be the following:
onPaging: function (pgButton) {
var p = $(this).jqGrid("getGridParam"),
newRowNum = parseInt($(p.pager).find(".ui-pg-selbox").val());
if (...) { // some stop criteria
return "stop";
}
}
如果使用toppager: true选项，则jqGrid在网格顶部创建寻呼机，然后将toppager参数的值从true更改为寻呼机的选择器ID.因此，您可以使用类似
If you use toppager: true option then jqGrid create the pager on the top of the grid and then it change the value of toppager parameter from true to the selector id of the pager. So you can use the code like
onPaging: function (pgButton) {
var p = $(this).jqGrid("getGridParam"),
newRowNum = parseInt($(p.toppager).find(".ui-pg-selbox").val());
if (...) { // some stop criteria
return "stop";
}
}
，仅在上一个代码示例中使用p.toppager代替p.pager.
which just use p.toppager instead of p.pager in the previous code example.
如果同时使用 顶部和底部寻呼机，则必须同时获得两个值并选择不等于rowNum参数值的值:
In case of usage both top and bottom pagers you have to get both values and choose the value which is not equal to the value of rowNum parameter:
onPaging: function (pgButton) {
var p = $(this).jqGrid("getGridParam"),
rowNumBottom = parseInt($(p.pager).find(".ui-pg-selbox").val()),
rowNumTop = parseInt($(p.toppager).find(".ui-pg-selbox").val()),
newRowNum = p.rowNum === rowNumTop ? rowNumBottom: rowNumTop;
if (...) { // some stop criteria
return "stop";
}
}
在寻呼机中进行其他更改后调用onPaging时，例如，如果用户在输入框中输入了新的寻呼机编号的新值，则存在关闭问题.
By the way there are exist close problem in case of calling onPaging after other changing in the pager, for example if the user typed new value in the input box with new pager number.
我现在正在我的叉子上以我的叉子的github.我更改jqGrid的代码，以便onPaging接收第二个参数，该参数是具有属性newPage，currentPage，lastPage，currentRowNum和newRowNum的对象.相应的jQuery事件jqGridPaging也被添加.此外，我已经更改了第一个参数的值，以使其对应 the文档，如果用户单击相应的寻呼机按钮，则该值为字符串"first"，"last"，"prev"或"next".实际上，版本4.7使用的是相应寻呼机按钮的id而不是"first"，"last"，"prev"，"next".因此，字符串"first"，"last"，"prev"，"next"可以附加"_"和寻呼机(或toppager)的ID.
I'm developing now free jqGrid as my fork on github. I change the code of jqGrid so that onPaging receives the second parameter which is object with the properties newPage, currentPage, lastPage, currentRowNum and newRowNum. The corresponding jQuery event jqGridPaging are added too. Moreover I have changed the value of the first parameter so that it corresponds the documentation and the value will be the string "first", "last", "prev" or "next" in case when the user clicked on the corresponding pager button. The version 4.7 used in reality the id of the corresponding pager buttons instead of "first", "last", "prev", "next". So the strings "first", "last", "prev", "next" could be appended with "_" and the id of the pager (or toppager).
因此，可以直接在回调代码中使用options.newRowNum或options.currentRowNum:
Thus one can just use options.newRowNum or options.currentRowNum directly in the code of callback:
onPaging: function (pgButton, options) {
// one can use options.newRowNum directly
// the value options.currentRowNum is identical to
// $(this).jqGrid("getGridParam", "rowNum")
if (...) { // some stop criteria
return "stop";
}
}
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