如何按ASC顺序中的值对此结构进行排序?
<cfset dStruct = createObject("java", "java.util.LinkedHashMap").init()>
<cfquery name="gds" datasource="#application.dsn#">
SELECT * FROM stores WHERE region_id = #arguments.retailer_id#
ORDER BY client_loc ASC
</cfquery>
<cfoutput query="gds">
<cfset var dStru = { "#gds.storeid#" = "#gds.client_loc# - #gds.city#, #gds.state#" }>
<cfset StructAppend( dStruct, dStru )>
</cfoutput>
<cfset StructSort(dStruct,"textnocase","asc")>
....
<cfreturn SerializeJSON(dStruct) />
结果然后填充下拉列表。结果如下:
struct
299 | ASH041 - ONTARIO, CA
300 | ASH042 - CLEARWATER, FL
301 | ASH044 - TAMPA, FL
302 | ASH046 - ORLANDO, FL
303 | ASH047 - SARASOTA, FL
304 | ASH048 - TAMPA, FL
305 | ASH002 - HUNTINGTON STN., NY
如果排序正确,ASH002将是第一个结果,但它似乎是在KEY而不是VALUE上排序。有没有办法按值排序?
我也试过了......
<cfset dStruct = createObject("java", "java.util.LinkedHashMap").init() />
无论哪种方式都会产生相同的结果。以下是结果的屏幕截图...
这是填充选择菜单的jquery。
$.ajax({
url: "/functions.cfc",
cache: false,
type: "get",
dataType: "json",
data: {method: "getstoresbyretailer", retailer_id: (retailer_id)}, //get stores
success: function (data) {
var $select = $('#storeid');
$select.find('option').remove();
$.each(data,function(key, value) {
$select.append('<option value=' + key + '>' + value + '</option>');
});
}
});
答案 0 :(得分:4)
在SQL语句中排序将是最佳解决方案:
ORDER BY storeid, client_loc, city, state
然后循环查询并生成选项。
但要回答你的问题:
如果要对未链接的结构(dStruct
)进行排序并保留有序结构,则必须使用链接结构(LinkedHashMap
):
<cfset sortedKeys = structSort(dStruct, "textnocase", "asc")>
<cfset sortedStruct = createObject("java", "java.util.LinkedHashMap").init()>
<cfloop array="#sortedKeys#" index="key">
<cfset sortedStruct[key] = dStruct[key]>
</cfloop>
<cfoutput>
<select>
<cfloop collection="#sortedStruct#" item="key">
<option>#encodeForHtml(sortedStruct[key])#</option>
</cfloop>
</select>
</cfoutput>
请注意,使用cfdump
不会显示链接结构的实际顺序。
答案 1 :(得分:1)
非常感谢你的帮助。我想出了一个解决方案......通过返回一个对象数组。
function getstoresbyretailer(retailer_id) {
$.ajax({
url: "/functions.cfc",
cache: false,
type: "get",
dataType: "json",
data: {method: "getstoresbyretailer", retailer_id: (retailer_id)},
success: function (data) {
var $select = $('#storeid');
$select.find('option').remove();
$.each(data, function(key, value) {
$select.append('<option value=' + value.storeid + '>' + value.store + '</option>');
});
}
});
}
ColdFusion功能......
<cffunction name="getstoresbyretailer" access="remote" returnformat="json" output="no">
<cfargument name="retailer_id" type="numeric" required="yes">
<cfset var dArray = []>
<cfif arguments.retailer_id neq 0>
<cfquery name="gds" datasource="#application.dsn#">
SELECT * FROM stores WHERE region_id = #arguments.retailer_id#
ORDER BY client_loc ASC
</cfquery>
<cfif gds.recordcount>
<cfoutput query="gds">
<cfset dStru = { "storeid" = "#gds.storeid#", "store" = "#gds.client_loc# - #gds.city#, #gds.state#" }>
<cfset ArrayAppend( dArray, dStru )>
</cfoutput>
</cfif>
</cfif>
<cfreturn SerializeJSON(dArray) />
</cffunction>
想象某人可能有一天能够使用它。