gpt4 book ai didi

javascript - jqgrid 在编辑框中不正确选择下拉选项值

转载 作者:可可西里 更新时间:2023-11-01 01:36:47 24 4
gpt4 key购买 nike

我正在使用表单编辑。表单中有两个选择框。一个选择框是国家,另一个选择框是州。州选择框取决于所选国家,并将动态填充。例如:

国家:

US (option value=1)
UK (option value=2)

美国的状态:

Alabama (option value=1)
California (option value=2)
Florida (option value=3)
Hawaii (option value=4)

英国的状态:

London (option value=5)
Oxford (option value=6)

如您所见,英国的州 ID 以 5 开头。当我编辑包含 Country id=2 (UK)State id=6 (Oxford) 的记录时,编辑表单将正确显示 - Country 是 UK,State 是 Oxford。但是如果你下拉状态选择框选项文本是正确的(它显示伦敦牛津)但是选项值将从 0 开始。应该正确的是选项值应该从 5 开始。

如果您选择并将国家/地区下拉框更改为美国,然后再次更改回英国,选项值将被正确填充(从 5 开始)。

我的问题是,当加载编辑表单时,我们如何根据编辑框中的国家/地区使用正确的选项值填充州的选择框?

最佳答案

您的问题的答案在一定程度上取决于您收到“美国所在州”和“英国所在州”下显示的信息的来源。 jqGrid 支持两种可能性:1) editoptionsvalue 参数的使用2) editoptionsdataUrlbuildSelect参数的使用.在本地编辑或可能选项列表是静态的情况下,第一种方法是最好的方法。第二个选择将用于这种情况,即根据 AJAX 请求从数据库中获取有关州、国家和某个国家/地区的州的信息。我在示例中描述了使用 value 参数以不依赖于服务器组件的解决方案。在使用dataUrlbuildSelect 的情况下,实现的大部分部分是相同的。

我做了 the live example展示您的需求。

主要问题是 editoptionsvalue 在初始化时仅使用一次dataInit 内部函数可以覆盖,但是在第一个带有国家的选择/下拉框中的值发生变化后,第二个带有状态的选择/下拉框必须手动重建。为此,您必须了解,select HTML 元素具有由行 ID“_”和列名称构造的 ID:rowId +“_State”。此外,重要的是,editoptionsvalue 必须重置为初始值,以便任何状态 id 都可以解码为状态名称。

这是来自 the example 的代码:

var countries = { '1': 'US', '2': 'UK' };
var states = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii', '5': 'London', '6': 'Oxford' };
var statesOfCountry = {
1: { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii' },
2: { '5': 'London', '6': 'Oxford' }
};
var mydata = [
{ id: '0', Country: '1', State: '1', Name: "Louise Fletcher" },
{ id: '1', Country: '1', State: '3', Name: "Jim Morrison" },
{ id: '2', Country: '2', State: '5', Name: "Sherlock Holmes" },
{ id: '3', Country: '2', State: '6', Name: "Oscar Wilde" }
];

var lastSel = -1;
var grid = jQuery("#list");
var resetStatesValues = function () {
grid.setColProp('State', { editoptions: { value: states} });
};
grid.jqGrid({
data: mydata,
datatype: 'local',
colModel: [
{ name: 'Name', width: 200 },
{ name: 'Country', width: 100, editable: true, formatter: 'select',
edittype: 'select', editoptions: {
value: countries,
dataInit: function (elem) {
var v = $(elem).val();
// to have short list of options which corresponds to the country
// from the row we have to change temporary the column property
grid.setColProp('State', { editoptions: { value: statesOfCountry[v]} });
},
dataEvents: [
{
type: 'change',
fn: function(e) {
// To be able to save the results of the current selection
// the value of the column property must contain at least
// the current selected 'State'. So we have to reset
// the column property to the following
//grid.setColProp('State', { editoptions:{value: statesOfCountry[v]} });
//grid.setColProp('State', { editoptions: { value: states} });
resetStatesValues();

// build 'State' options based on the selected 'Country' value
var v = parseInt($(e.target).val(), 10);
var sc = statesOfCountry[v];
var newOptions = '';
for (var stateId in sc) {
if (sc.hasOwnProperty(stateId)) {
newOptions += '<option role="option" value="' +
stateId + '">' +
states[stateId] + '</option>';
}
}

// populate the new
if ($(e.target).is('.FormElement')) {
// form editing
var form = $(e.target).closest('form.FormGrid');
$("select#State.FormElement", form[0]).html(newOptions);
} else {
// inline editing
var row = $(e.target).closest('tr.jqgrow');
var rowId = row.attr('id');
$("select#" + rowId + "_State", row[0]).html(newOptions);
}
}
}
]
}
},
{
name: 'State', width: 100, editable: true, formatter: 'select',
edittype: 'select', editoptions: { value: states }
}
],
onSelectRow: function (id) {
if (id && id !== lastSel) {
if (lastSel != -1) {
resetStatesValues();
grid.restoreRow(lastSel);
}
lastSel = id;
}
},
ondblClickRow: function (id, ri, ci) {
if (id && id !== lastSel) {
grid.restoreRow(lastSel);
lastSel = id;
}
resetStatesValues();
grid.editRow(id, true, null, null, 'clientArray', null,
function (rowid, response) { // aftersavefunc
grid.setColProp('State', { editoptions: { value: states} });
});
return;
},
editurl: 'clientArray',
sortname: 'Name',
height: '100%',
viewrecords: true,
rownumbers: true,
sortorder: "desc",
pager: '#pager',
caption: "Demonstrate dependend select/dropdown lists (edit on double-click)"
}).jqGrid('navGrid','#pager',
{ edit: true, add: true, del: false, search: false, refresh: false },
{ // edit options
recreateForm:true,
onClose:function() {
resetStatesValues();
}
},
{ // add options
recreateForm:true,
onClose:function() {
resetStatesValues();
}
});

已更新:我更新了上面的代码,使其在表单编辑时也能正常工作。可以直播看here .因为 jqGrid 不支持表单编辑的本地编辑,所以我无法测试代码。尽管如此,我还是希望我已充分利用所需的更改。

更新 2:我扩展了上面的代码以支持

  1. 内联编辑、表单编辑、搜索工具栏和高级搜索
  2. 编辑表单中的上一个或下一个导航按钮
  3. 改进了选择中的键盘支持(修复了某些浏览器中刷新相关选择的问题)

新版本的演示是here .您在下面找到的演示的修改代码:

var countries = { '1': 'US', '2': 'UK' },
//allCountries = {'': 'All', '1': 'US', '2': 'UK'},
// we use string form of allCountries to have control on the order of items
allCountries = ':All;1:US;2:UK',
states = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii', '5': 'London', '6': 'Oxford' },
allStates = ':All;1:Alabama;2:California;3:Florida;4:Hawaii;5:London;6:Oxford',
statesOfUS = { '1': 'Alabama', '2': 'California', '3': 'Florida', '4': 'Hawaii' },
statesOfUK = { '5': 'London', '6': 'Oxford' },
// the next maps contries by ids to states
statesOfCountry = { '': states, '1': statesOfUS, '2': statesOfUK },
mydata = [
{ id: '0', country: '1', state: '1', name: "Louise Fletcher" },
{ id: '1', country: '1', state: '3', name: "Jim Morrison" },
{ id: '2', country: '2', state: '5', name: "Sherlock Holmes" },
{ id: '3', country: '2', state: '6', name: "Oscar Wilde" }
],
lastSel = -1,
grid = $("#list"),
removeAllOption = function (elem) {
if (typeof elem === "object" && typeof elem.id === "string" && elem.id.substr(0, 3) !== "gs_") {
// in the searching bar
$(elem).find('option[value=""]').remove();
}
},
resetStatesValues = function () {
// set 'value' property of the editoptions to initial state
grid.jqGrid('setColProp', 'state', { editoptions: { value: states} });
},
setStateValues = function (countryId) {
// to have short list of options which corresponds to the country
// from the row we have to change temporary the column property
grid.jqGrid('setColProp', 'state', { editoptions: { value: statesOfCountry[countryId]} });
},
changeStateSelect = function (countryId, countryElem) {
// build 'state' options based on the selected 'country' value
var stateId, stateSelect, parentWidth, $row,
$countryElem = $(countryElem),
sc = statesOfCountry[countryId],
isInSearchToolbar = $countryElem.parent().parent().parent().hasClass('ui-search-toolbar'),
//$(countryElem).parent().parent().hasClass('ui-th-column')
newOptions = isInSearchToolbar ? '<option value="">All</option>' : '';

for (stateId in sc) {
if (sc.hasOwnProperty(stateId)) {
newOptions += '<option role="option" value="' + stateId + '">' +
states[stateId] + '</option>';
}
}

setStateValues(countryId);

// populate the subset of contries
if (isInSearchToolbar) {
// searching toolbar
$row = $countryElem.closest('tr.ui-search-toolbar');
stateSelect = $row.find(">th.ui-th-column select#gs_state");
parentWidth = stateSelect.parent().width();
stateSelect.html(newOptions).css({width: parentWidth});
} else if ($countryElem.is('.FormElement')) {
// form editing
$countryElem.closest('form.FormGrid').find("select#state.FormElement").html(newOptions);
} else {
// inline editing
$row = $countryElem.closest('tr.jqgrow');
$("select#" + $.jgrid.jqID($row.attr('id')) + "_state").html(newOptions);
}
},
editGridRowOptions = {
recreateForm: true,
onclickPgButtons: function (whichButton, $form, rowid) {
var $row = $('#' + $.jgrid.jqID(rowid)), countryId;
if (whichButton === 'next') {
$row = $row.next();
} else if (whichButton === 'prev') {
$row = $row.prev();
}
if ($row.length > 0) {
countryId = grid.jqGrid('getCell', $row.attr('id'), 'country');
changeStateSelect(countryId, $("#country")[0]);
}
},
onClose: function () {
resetStatesValues();
}
};

grid.jqGrid({
data: mydata,
datatype: 'local',
colModel: [
{ name: 'name', width: 200, editable: true },
{ name: 'country', width: 100, editable: true, formatter: 'select', stype: 'select', edittype: 'select',
searchoptions: {
value: allCountries,
dataInit: function (elem) { removeAllOption(elem); },
dataEvents: [
{ type: 'change', fn: function (e) { changeStateSelect($(e.target).val(), e.target); } },
{ type: 'keyup', fn: function (e) { $(e.target).trigger('change'); } }
]
},
editoptions: {
value: countries,
dataInit: function (elem) { setStateValues($(elem).val()); },
dataEvents: [
{ type: 'change', fn: function (e) { changeStateSelect($(e.target).val(), e.target); } },
{ type: 'keyup', fn: function (e) { $(e.target).trigger('change'); } }
]
}},
{ name: 'state', width: 100, formatter: 'select', stype: 'select',
editable: true, edittype: 'select', editoptions: { value: states },
searchoptions: { value: allStates, dataInit: function (elem) { removeAllOption(elem); } } }
],
onSelectRow: function (id) {
if (id && id !== lastSel) {
if (lastSel !== -1) {
$(this).jqGrid('restoreRow', lastSel);
resetStatesValues();
}
lastSel = id;
}
},
ondblClickRow: function (id) {
if (id && id !== lastSel) {
$(this).jqGrid('restoreRow', lastSel);
lastSel = id;
}
resetStatesValues();
$(this).jqGrid('editRow', id, {
keys: true,
aftersavefunc: function () {
resetStatesValues();
},
afterrestorefunc: function () {
resetStatesValues();
}
});
return;
},
editurl: 'clientArray',
sortname: 'name',
ignoreCase: true,
height: '100%',
viewrecords: true,
rownumbers: true,
sortorder: "desc",
pager: '#pager',
caption: "Demonstrate dependend select/dropdown lists (inline editing on double-click)"
});
grid.jqGrid('navGrid', '#pager', { del: false }, editGridRowOptions, editGridRowOptions);
grid.jqGrid('filterToolbar', {stringResult: true, searchOnEnter: true, defaultSearch : "cn"});

更新 3:您将找到演示代码的最新版本 here .

关于javascript - jqgrid 在编辑框中不正确选择下拉选项值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4469650/

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com