Question

我想轻松地将参数的结构内容放入组件的所有函数的变量范围中。＆＃39;名称＆＃39;是searchitems结构之一。

<cffunction name="setSearch" acces="public" returntype="void">    
     <cfargument name="searchitems" type="struct" required="true" />
     <cfset variables = arguments.searchitems>
     <cfset variables.test = "yo">           
</cffunction>

<cffunction name="testit" acces="public" returntype="void">
    <cfdump var="#variables.test#"><br>
    <cfif isdefined('variables.test')>found in variables.test  </cfif>
    <cfif isdefined('variables.variables.test')>found in variables.variables.test </cfif>
    <hr>
    <cfdump var="#variables.title#"><br>
    <cfif structkeyexists(variables,'title')>found in variables.title with structkeyexists </cfif>
    <cfif structkeyexists(variables.variables,'title')>found in variables.variables.title with structkeyexists</cfif>
    <cfif isdefined('variables.title')>found in variables.title </cfif>
    <cfif isdefined('variables.variables.title')>found in variables.variables.title</cfif>
</cffunction>

然而，运行它会给出：

yo
found in variables.test

mytitletext
found in variables.variables.title with structkeyexists
found in variables.variables.title

我发现这很奇怪，标题可以转储或输出为variables.title，但不能用isDefined或structkeyexists检测。是否有更有效的方式来分配

<cfset variables = arguments.searchitems>

Answer 1

使用组件的“this”范围。

<cfcomponent>

<cfset this.myArgs = StructNew()>
<cfset this.test = "">


<cffunction name="setSearch" acces="public" returntype="void">    
     <cfargument name="searchitems" type="struct" required="true" />
     <cfset this.myArgs= arguments>
     <cfset this.test = "yo">           
</cffunction>

</cfcomponent>

Answer 2

我建议遵循Adam的建议，并将searchitems保存在变量范围内的独立结构中，而不是单独的项目中。这样你就不会冒险覆盖其他变量。

<强> Test.cfc

<cfcomponent>

    <cffunction name="init">
        <!--- Set up a separate empty container for the searchitems to be available to all functions --->
        <cfset variables.searchitems = StructNew()>
        <cfreturn this>
    </cffunction>

    <cffunction name="setSearch" returntype="void">    
        <cfargument name="searchitems" type="struct" required="true">
        <!--- Fill the container with the struct passed into this function --->
        <cfset variables.searchitems = arguments.searchitems>
    </cffunction>

    <cffunction name="dumpSearchTitle" returntype="void">
        <cfdump var="#variables.searchitems.title#">
    </cffunction>

</cfcomponent>

<强> index.cfm

<cfscript>
    request.searchitems = StructNew();
    request.searchitems.title = "mytitletext";
    test = CreateObject( "component", "test" );
    test.setSearch( request.searchitems );
    test.dumpSearchTitle();
</cfscript>

但是，如果在变量范围中包含单个searchitems非常重要，那么您可以将它们附加到变量范围。 false的第三个StructAppend参数可确保您不会覆盖现有变量。

<强> Test.cfc

<cfcomponent>

    <cffunction name="init">
        <cfreturn this>
    </cffunction>

    <cffunction name="setSearch" returntype="void">    
        <cfargument name="searchitems" type="struct" required="true">
        <cfset StructAppend( variables,arguments.searchitems,false )>
    </cffunction>

    <cffunction name="dumpSearchTitle" returntype="void">
        <cfdump var="#variables.title#">
    </cffunction>

</cfcomponent>

将参数的结构放在变量范围内

2 个答案: