当我将 php 代码添加到下面的代码片段时，我遇到了 MYSQL 正确显示结果的问题。
当它运行时，它会正确显示所有内容，除非我单击 <optgroup>它只读取第一个 <option></option>而不是阅读 <optgroup></optgroup> 中的所有内容当我尝试在 MYSQL 中使用 GROUP BY 时，一切都是固定的，只是它只显示我数据库中的一个列，而不是过滤的所有内容。
我很确定错误出在我的 PHP 代码中，因为我认为该代码正在为每个选项编写一个 optgroup，所以它正在像这样读取它
<optgroup>
<option>option 1</option>
</optgroup>
<optgroup>
<option>option 2</option>
</optgroup>
<optgroup>
<option>option 3</option>
</optgroup>
我的 PHP 代码:
<?php $sql = "SELECT * FROM `users`,`departments` WHERE users.dept = departments.dept_name";
$query = mysql_query($sql);
echo "<select name='test[]' id='optgroup' class='ms' multiple='multiple'>";?>
<?php while ($row = mysql_fetch_array($query)) {
echo "<optgroup label=".$row['dept_name'].">
<option value=".$row['user_name'].">".$row['user_name']."</option>
</optgroup>";}?>
</select>
用户表架构:
创建表 users (
`user_id` int(11) NOT NULL AUTO_INCREMENT,
`user_role` varchar(255) NOT NULL,
`user_name` varchar(255) NOT NULL,
`gender` varchar(255) NOT NULL,
`dob` varchar(255) NOT NULL,
`email` varchar(255) NOT NULL,
`address` varchar(255) NOT NULL,
`phone` varchar(30) NOT NULL,
`dept` varchar(255) NOT NULL,
`username` varchar(255) NOT NULL,
`password` varchar(255) NOT NULL,
`userpic` varchar(255) NOT NULL,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
部门表架构:
部门
CREATE TABLE `departments` (
`dept_id` int(11) NOT NULL AUTO_INCREMENT,
`dept_name` varchar(255) NOT NULL,
`dept_supervisor` varchar(255) NOT NULL,
`dept_desc` varchar(255) NOT NULL,
`dept_email` varchar(255) NOT NULL,
`dept_phone` varchar(100) NOT NULL,
PRIMARY KEY (`dept_id`)
) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=latin1
片段:
/*
* MultiSelect v0.9.12
* Copyright (c) 2012 Louis Cuny
*
* This program is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What The Fuck You Want
* To Public License, Version 2, as published by Sam Hocevar. See
* http://sam.zoy.org/wtfpl/COPYING for more details.
*/
!function ($) {
"use strict";
/* MULTISELECT CLASS DEFINITION
* ====================== */
var MultiSelect = function (element, options) {
this.options = options;
this.$element = $(element);
this.$container = $('<div/>', { 'class': "ms-container" });
this.$selectableContainer = $('<div/>', { 'class': 'ms-selectable' });
this.$selectionContainer = $('<div/>', { 'class': 'ms-selection' });
this.$selectableUl = $('<ul/>', { 'class': "ms-list", 'tabindex' : '-1' });
this.$selectionUl = $('<ul/>', { 'class': "ms-list", 'tabindex' : '-1' });
this.scrollTo = 0;
this.elemsSelector = 'li:visible:not(.ms-optgroup-label,.ms-optgroup-container,.'+options.disabledClass+')';
};
MultiSelect.prototype = {
constructor: MultiSelect,
init: function(){
var that = this,
ms = this.$element;
if (ms.next('.ms-container').length === 0){
ms.css({ position: 'absolute', left: '-9999px' });
ms.attr('id', ms.attr('id') ? ms.attr('id') : Math.ceil(Math.random()*1000)+'multiselect');
this.$container.attr('id', 'ms-'+ms.attr('id'));
this.$container.addClass(that.options.cssClass);
ms.find('option').each(function(){
that.generateLisFromOption(this);
});
this.$selectionUl.find('.ms-optgroup-label').hide();
if (that.options.selectableHeader){
that.$selectableContainer.append(that.options.selectableHeader);
}
that.$selectableContainer.append(that.$selectableUl);
if (that.options.selectableFooter){
that.$selectableContainer.append(that.options.selectableFooter);
}
if (that.options.selectionHeader){
that.$selectionContainer.append(that.options.selectionHeader);
}
that.$selectionContainer.append(that.$selectionUl);
if (that.options.selectionFooter){
that.$selectionContainer.append(that.options.selectionFooter);
}
that.$container.append(that.$selectableContainer);
that.$container.append(that.$selectionContainer);
ms.after(that.$container);
that.activeMouse(that.$selectableUl);
that.activeKeyboard(that.$selectableUl);
var action = that.options.dblClick ? 'dblclick' : 'click';
that.$selectableUl.on(action, '.ms-elem-selectable', function(){
that.select($(this).data('ms-value'));
});
that.$selectionUl.on(action, '.ms-elem-selection', function(){
that.deselect($(this).data('ms-value'));
});
that.activeMouse(that.$selectionUl);
that.activeKeyboard(that.$selectionUl);
ms.on('focus', function(){
that.$selectableUl.focus();
});
}
var selectedValues = ms.find('option:selected').map(function(){ return $(this).val(); }).get();
that.select(selectedValues, 'init');
if (typeof that.options.afterInit === 'function') {
that.options.afterInit.call(this, this.$container);
}
},
'generateLisFromOption' : function(option, index, $container){
var that = this,
ms = that.$element,
attributes = "",
$option = $(option);
for (var cpt = 0; cpt < option.attributes.length; cpt++){
var attr = option.attributes[cpt];
if(attr.name !== 'value' && attr.name !== 'disabled'){
attributes += attr.name+'="'+attr.value+'" ';
}
}
var selectableLi = $('<li '+attributes+'><span>'+that.escapeHTML($option.text())+'</span></li>'),
selectedLi = selectableLi.clone(),
value = $option.val(),
elementId = that.sanitize(value);
selectableLi
.data('ms-value', value)
.addClass('ms-elem-selectable')
.attr('id', elementId+'-selectable');
selectedLi
.data('ms-value', value)
.addClass('ms-elem-selection')
.attr('id', elementId+'-selection')
.hide();
if ($option.prop('disabled') || ms.prop('disabled')){
selectedLi.addClass(that.options.disabledClass);
selectableLi.addClass(that.options.disabledClass);
}
var $optgroup = $option.parent('optgroup');
if ($optgroup.length > 0){
var optgroupLabel = $optgroup.attr('label'),
optgroupId = that.sanitize(optgroupLabel),
$selectableOptgroup = that.$selectableUl.find('#optgroup-selectable-'+optgroupId),
$selectionOptgroup = that.$selectionUl.find('#optgroup-selection-'+optgroupId);
if ($selectableOptgroup.length === 0){
var optgroupContainerTpl = '<li class="ms-optgroup-container"></li>',
optgroupTpl = '<ul class="ms-optgroup"><li class="ms-optgroup-label"><span>'+optgroupLabel+'</span></li></ul>';
$selectableOptgroup = $(optgroupContainerTpl);
$selectionOptgroup = $(optgroupContainerTpl);
$selectableOptgroup.attr('id', 'optgroup-selectable-'+optgroupId);
$selectionOptgroup.attr('id', 'optgroup-selection-'+optgroupId);
$selectableOptgroup.append($(optgroupTpl));
$selectionOptgroup.append($(optgroupTpl));
if (that.options.selectableOptgroup){
$selectableOptgroup.find('.ms-optgroup-label').on('click', function(){
var values = $optgroup.children(':not(:selected, :disabled)').map(function(){ return $(this).val();}).get();
that.select(values);
});
$selectionOptgroup.find('.ms-optgroup-label').on('click', function(){
var values = $optgroup.children(':selected:not(:disabled)').map(function(){ return $(this).val();}).get();
that.deselect(values);
});
}
that.$selectableUl.append($selectableOptgroup);
that.$selectionUl.append($selectionOptgroup);
}
index = index === undefined ? $selectableOptgroup.find('ul').children().length : index + 1;
selectableLi.insertAt(index, $selectableOptgroup.children());
selectedLi.insertAt(index, $selectionOptgroup.children());
} else {
index = index === undefined ? that.$selectableUl.children().length : index;
selectableLi.insertAt(index, that.$selectableUl);
selectedLi.insertAt(index, that.$selectionUl);
}
},
'addOption' : function(options){
var that = this;
if (options.value !== undefined && options.value !== null){
options = [options];
}
$.each(options, function(index, option){
if (option.value !== undefined && option.value !== null &&
that.$element.find("option[value='"+option.value+"']").length === 0){
var $option = $('<option value="'+option.value+'">'+option.text+'</option>'),
index = parseInt((typeof option.index === 'undefined' ? that.$element.children().length : option.index)),
$container = option.nested === undefined ? that.$element : $("optgroup[label='"+option.nested+"']");
$option.insertAt(index, $container);
that.generateLisFromOption($option.get(0), index, option.nested);
}
});
},
'escapeHTML' : function(text){
return $("<div>").text(text).html();
},
'activeKeyboard' : function($list){
var that = this;
$list.on('focus', function(){
$(this).addClass('ms-focus');
})
.on('blur', function(){
$(this).removeClass('ms-focus');
})
.on('keydown', function(e){
switch (e.which) {
case 40:
case 38:
e.preventDefault();
e.stopPropagation();
that.moveHighlight($(this), (e.which === 38) ? -1 : 1);
return;
case 37:
case 39:
e.preventDefault();
e.stopPropagation();
that.switchList($list);
return;
case 9:
if(that.$element.is('[tabindex]')){
e.preventDefault();
var tabindex = parseInt(that.$element.attr('tabindex'), 10);
tabindex = (e.shiftKey) ? tabindex-1 : tabindex+1;
$('[tabindex="'+(tabindex)+'"]').focus();
return;
}else{
if(e.shiftKey){
that.$element.trigger('focus');
}
}
}
if($.inArray(e.which, that.options.keySelect) > -1){
e.preventDefault();
e.stopPropagation();
that.selectHighlighted($list);
return;
}
});
},
'moveHighlight': function($list, direction){
var $elems = $list.find(this.elemsSelector),
$currElem = $elems.filter('.ms-hover'),
$nextElem = null,
elemHeight = $elems.first().outerHeight(),
containerHeight = $list.height(),
containerSelector = '#'+this.$container.prop('id');
$elems.removeClass('ms-hover');
if (direction === 1){ // DOWN
$nextElem = $currElem.nextAll(this.elemsSelector).first();
if ($nextElem.length === 0){
var $optgroupUl = $currElem.parent();
if ($optgroupUl.hasClass('ms-optgroup')){
var $optgroupLi = $optgroupUl.parent(),
$nextOptgroupLi = $optgroupLi.next(':visible');
if ($nextOptgroupLi.length > 0){
$nextElem = $nextOptgroupLi.find(this.elemsSelector).first();
} else {
$nextElem = $elems.first();
}
} else {
$nextElem = $elems.first();
}
}
} else if (direction === -1){ // UP
$nextElem = $currElem.prevAll(this.elemsSelector).first();
if ($nextElem.length === 0){
var $optgroupUl = $currElem.parent();
if ($optgroupUl.hasClass('ms-optgroup')){
var $optgroupLi = $optgroupUl.parent(),
$prevOptgroupLi = $optgroupLi.prev(':visible');
if ($prevOptgroupLi.length > 0){
$nextElem = $prevOptgroupLi.find(this.elemsSelector).last();
} else {
$nextElem = $elems.last();
}
} else {
$nextElem = $elems.last();
}
}
}
if ($nextElem.length > 0){
$nextElem.addClass('ms-hover');
var scrollTo = $list.scrollTop() + $nextElem.position().top -
containerHeight / 2 + elemHeight / 2;
$list.scrollTop(scrollTo);
}
},
'selectHighlighted' : function($list){
var $elems = $list.find(this.elemsSelector),
$highlightedElem = $elems.filter('.ms-hover').first();
if ($highlightedElem.length > 0){
if ($list.parent().hasClass('ms-selectable')){
this.select($highlightedElem.data('ms-value'));
} else {
this.deselect($highlightedElem.data('ms-value'));
}
$elems.removeClass('ms-hover');
}
},
'switchList' : function($list){
$list.blur();
this.$container.find(this.elemsSelector).removeClass('ms-hover');
if ($list.parent().hasClass('ms-selectable')){
this.$selectionUl.focus();
} else {
this.$selectableUl.focus();
}
},
'activeMouse' : function($list){
var that = this;
this.$container.on('mouseenter', that.elemsSelector, function(){
$(this).parents('.ms-container').find(that.elemsSelector).removeClass('ms-hover');
$(this).addClass('ms-hover');
});
this.$container.on('mouseleave', that.elemsSelector, function () {
$(this).parents('.ms-container').find(that.elemsSelector).removeClass('ms-hover');
});
},
'refresh' : function() {
this.destroy();
this.$element.multiSelect(this.options);
},
'destroy' : function(){
$("#ms-"+this.$element.attr("id")).remove();
this.$element.off('focus');
this.$element.css('position', '').css('left', '');
this.$element.removeData('multiselect');
},
'select' : function(value, method){
if (typeof value === 'string'){ value = [value]; }
var that = this,
ms = this.$element,
msIds = $.map(value, function(val){ return(that.sanitize(val)); }),
selectables = this.$selectableUl.find('#' + msIds.join('-selectable, #')+'-selectable').filter(':not(.'+that.options.disabledClass+')'),
selections = this.$selectionUl.find('#' + msIds.join('-selection, #') + '-selection').filter(':not(.'+that.options.disabledClass+')'),
options = ms.find('option:not(:disabled)').filter(function(){ return($.inArray(this.value, value) > -1); });
if (method === 'init'){
selectables = this.$selectableUl.find('#' + msIds.join('-selectable, #')+'-selectable'),
selections = this.$selectionUl.find('#' + msIds.join('-selection, #') + '-selection');
}
if (selectables.length > 0){
selectables.addClass('ms-selected').hide();
selections.addClass('ms-selected').show();
options.prop('selected', true);
that.$container.find(that.elemsSelector).removeClass('ms-hover');
var selectableOptgroups = that.$selectableUl.children('.ms-optgroup-container');
if (selectableOptgroups.length > 0){
selectableOptgroups.each(function(){
var selectablesLi = $(this).find('.ms-elem-selectable');
if (selectablesLi.length === selectablesLi.filter('.ms-selected').length){
$(this).find('.ms-optgroup-label').hide();
}
});
var selectionOptgroups = that.$selectionUl.children('.ms-optgroup-container');
selectionOptgroups.each(function(){
var selectionsLi = $(this).find('.ms-elem-selection');
if (selectionsLi.filter('.ms-selected').length > 0){
$(this).find('.ms-optgroup-label').show();
}
});
} else {
if (that.options.keepOrder && method !== 'init'){
var selectionLiLast = that.$selectionUl.find('.ms-selected');
if((selectionLiLast.length > 1) && (selectionLiLast.last().get(0) != selections.get(0))) {
selections.insertAfter(selectionLiLast.last());
}
}
}
if (method !== 'init'){
ms.trigger('change');
if (typeof that.options.afterSelect === 'function') {
that.options.afterSelect.call(this, value);
}
}
}
},
'deselect' : function(value){
if (typeof value === 'string'){ value = [value]; }
var that = this,
ms = this.$element,
msIds = $.map(value, function(val){ return(that.sanitize(val)); }),
selectables = this.$selectableUl.find('#' + msIds.join('-selectable, #')+'-selectable'),
selections = this.$selectionUl.find('#' + msIds.join('-selection, #')+'-selection').filter('.ms-selected').filter(':not(.'+that.options.disabledClass+')'),
options = ms.find('option').filter(function(){ return($.inArray(this.value, value) > -1); });
if (selections.length > 0){
selectables.removeClass('ms-selected').show();
selections.removeClass('ms-selected').hide();
options.prop('selected', false);
that.$container.find(that.elemsSelector).removeClass('ms-hover');
var selectableOptgroups = that.$selectableUl.children('.ms-optgroup-container');
if (selectableOptgroups.length > 0){
selectableOptgroups.each(function(){
var selectablesLi = $(this).find('.ms-elem-selectable');
if (selectablesLi.filter(':not(.ms-selected)').length > 0){
$(this).find('.ms-optgroup-label').show();
}
});
var selectionOptgroups = that.$selectionUl.children('.ms-optgroup-container');
selectionOptgroups.each(function(){
var selectionsLi = $(this).find('.ms-elem-selection');
if (selectionsLi.filter('.ms-selected').length === 0){
$(this).find('.ms-optgroup-label').hide();
}
});
}
ms.trigger('change');
if (typeof that.options.afterDeselect === 'function') {
that.options.afterDeselect.call(this, value);
}
}
},
'select_all' : function(){
var ms = this.$element,
values = ms.val();
ms.find('option:not(":disabled")').prop('selected', true);
this.$selectableUl.find('.ms-elem-selectable').filter(':not(.'+this.options.disabledClass+')').addClass('ms-selected').hide();
this.$selectionUl.find('.ms-optgroup-label').show();
this.$selectableUl.find('.ms-optgroup-label').hide();
this.$selectionUl.find('.ms-elem-selection').filter(':not(.'+this.options.disabledClass+')').addClass('ms-selected').show();
this.$selectionUl.focus();
ms.trigger('change');
if (typeof this.options.afterSelect === 'function') {
var selectedValues = $.grep(ms.val(), function(item){
return $.inArray(item, values) < 0;
});
this.options.afterSelect.call(this, selectedValues);
}
},
'deselect_all' : function(){
var ms = this.$element,
values = ms.val();
ms.find('option').prop('selected', false);
this.$selectableUl.find('.ms-elem-selectable').removeClass('ms-selected').show();
this.$selectionUl.find('.ms-optgroup-label').hide();
this.$selectableUl.find('.ms-optgroup-label').show();
this.$selectionUl.find('.ms-elem-selection').removeClass('ms-selected').hide();
this.$selectableUl.focus();
ms.trigger('change');
if (typeof this.options.afterDeselect === 'function') {
this.options.afterDeselect.call(this, values);
}
},
sanitize: function(value){
var hash = 0, i, character;
if (value.length == 0) return hash;
var ls = 0;
for (i = 0, ls = value.length; i < ls; i++) {
character = value.charCodeAt(i);
hash = ((hash<<5)-hash)+character;
hash |= 0; // Convert to 32bit integer
}
return hash;
}
};
/* MULTISELECT PLUGIN DEFINITION
* ======================= */
$.fn.multiSelect = function () {
var option = arguments[0],
args = arguments;
return this.each(function () {
var $this = $(this),
data = $this.data('multiselect'),
options = $.extend({}, $.fn.multiSelect.defaults, $this.data(), typeof option === 'object' && option);
if (!data){ $this.data('multiselect', (data = new MultiSelect(this, options))); }
if (typeof option === 'string'){
data[option](args[1]);
} else {
data.init();
}
});
};
$.fn.multiSelect.defaults = {
keySelect: [32],
selectableOptgroup: false,
disabledClass : 'disabled',
dblClick : false,
keepOrder: false,
cssClass: ''
};
$.fn.multiSelect.Constructor = MultiSelect;
$.fn.insertAt = function(index, $parent) {
return this.each(function() {
if (index === 0) {
$parent.prepend(this);
} else {
$parent.children().eq(index - 1).after(this);
}
});
};
}(window.jQuery);
//Multi-select
$('#optgroup').multiSelect({ selectableOptgroup: true });.ms-container{
background: transparent url('../img/switch.png') no-repeat 50% 50%;
width: 370px;
}
.ms-container:after{
content: ".";
display: block;
height: 0;
line-height: 0;
font-size: 0;
clear: both;
min-height: 0;
visibility: hidden;
}
.ms-container .ms-selectable, .ms-container .ms-selection{
background: #fff;
color: #555555;
float: left;
width: 45%;
}
.ms-container .ms-selection{
float: right;
}
.ms-container .ms-list{
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
-moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
-webkit-transition: border linear 0.2s, box-shadow linear 0.2s;
-moz-transition: border linear 0.2s, box-shadow linear 0.2s;
-ms-transition: border linear 0.2s, box-shadow linear 0.2s;
-o-transition: border linear 0.2s, box-shadow linear 0.2s;
transition: border linear 0.2s, box-shadow linear 0.2s;
border: 1px solid #ccc;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
border-radius: 3px;
position: relative;
height: 200px;
padding: 0;
overflow-y: auto;
}
.ms-container .ms-list.ms-focus{
border-color: rgba(82, 168, 236, 0.8);
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
-moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
outline: 0;
outline: thin dotted \9;
}
.ms-container ul{
margin: 0;
list-style-type: none;
padding: 0;
}
.ms-container .ms-optgroup-container{
width: 100%;
}
.ms-container .ms-optgroup-label{
margin: 0;
padding: 5px 0px 0px 5px;
cursor: pointer;
color: #999;
}
.ms-container .ms-selectable li.ms-elem-selectable,
.ms-container .ms-selection li.ms-elem-selection{
border-bottom: 1px #eee solid;
padding: 2px 10px;
color: #555;
font-size: 14px;
}
.ms-container .ms-selectable li.ms-hover,
.ms-container .ms-selection li.ms-hover{
cursor: pointer;
color: #fff;
text-decoration: none;
background-color: #08c;
}
.ms-container .ms-selectable li.disabled,
.ms-container .ms-selection li.disabled{
background-color: #eee;
color: #aaa;
cursor: text;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="optgroup" class="ms" multiple="multiple">
<optgroup label="Department 1">
<option value="employee_1">Employee 1</option>
<option value="employee_2">Employee 2</option>
<option value="employee_3">Employee 3</option>
</optgroup>
<optgroup label="Department 2">
<option value="employee_4">Employee 4</option>
<option value="employee_5">Employee 5</option>
<option value="employee_6">Employee 6</option>
</optgroup>
</select>最佳答案
这是另一种方法，它只需要 1 个查询。看看我是如何对查询进行排序的，它与其他答案的想法基本相同，只是你没有进行 N 查询 * 部门数量
<?php
echo '<select name="test[]" id="optgroup" class="ms" multiple="multiple">', "\n";
$select = mysql_query( '
SELECT
*
FROM `users`, `departments`
WHERE `users`.`dept` = `departments`.`dept_name`
ORDER BY `departments`.`dept_name`, `users`.`user_name` ASC
' );
$department = false;
if( mysql_num_rows( $select ) ){
while( $row = mysql_fetch_array( $select ) ){
if( ! $department || ( $department && $department != $row['dept_name'] ) ){
// use some sort of character escapeing to prevent XSS
if( $department ){
echo '</optgroup>', "\n";
}
echo '<optgroup label="', htmlspecialchars( $row['dept_name'] ), '">', "\n";
$department = $row['dept_name'];
}
echo '<option value="', htmlspecialchars( $row['user_name'] ), '">',
htmlspecialchars( $row['user_name'] ),
'</option>', "\n";
}
echo '</optgroup>', "\n";
}
echo '</select>', "\n";
关于javascript - 正确显示 optgroups 中的数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41398064/