coldfusion - 创建一个逗号分隔的引用值列表

Question

我需要在引号内创建一个国家名称列表，并在末尾添加一个逗号 - 除了最后一个国家/地区名称，如下所示:
(我使用的是 ColdFusion 10)

  "Tuvalu",
  "Uganda",
  "Ukraine",
  "United Arab Emirates",
  "United Kingdom",
  "Uruguay"

  <cfquery name="query_names" datasource="MyDB">
   select short_desc
   from tbl_country
   where NVL(short_desc,' ') <> ' '
   order by short_desc
  </cfquery>
  <cfset TotalRec = "#query_names.Recordcount#">

  <cfloop query="query_names">
     <cfif query_names.Recordcount GT 271>
       <cfoutput>
         "#Trim(short_desc)#" & ","
       </cfoutput>
     <cfelse>
       <cfoutput>
         "#Trim(short_desc)#"
       </cfoutput>
     </cfif>
  </cfloop>

这个循环会导致国家名称在引号内，但没有逗号。所以我的循环结果:

  "Tuvalu"
  "Uganda"
  "Ukraine"
  "United Arab Emirates"
  "United Kingdom"
  "Uruguay"

Answer 1

如果您确实需要双引号，将引用的值附加到数组并在最后将其转换为列表可能更简单。 ArrayToList函数会自动为您处理逗号:

<cfset names = []>
<cfloop query="query_names">
    <cfset arrayAppend(names, '"'& short_desc & '"')>
</cfloop>

<cfoutput>#arrayToList(names)#</cfoutput>

结果:

"Tuvalu","Uganda","Ukraine","United Arab Emirates","United Kingdom","Uruguay" 

旁注，如果是单引号，即 '都可以接受，就更简单了。跳过循环，只需使用 QuotedValueList() :

 <cfoutput>#quotedValueList(query_names.short_desc)#</cfoutput>

结果:

'Tuvalu','Uganda','Ukraine','United Arab Emirates','United Kingdom','Uruguay'