apllication.cfc does not fire any default cffunction? Coldfusion

Question

apllication.cfc does not fire any default cffunction? Coldfusion

243 Views Asked by De De De De At 21 October 2024 at 09:37

Can anyone tell me what the problem is? I tried to run some .cfm files but it does not trigger any effect of cffunction except cfcomponent? Am I missing something? Can anyone explain to me?

<cfcomponent>
  <cfset THIS.Name = "formdemo">
  <cfset THIS.SessionManagement = true>
  <cfset This.Sessiontimeout="#createtimespan(0,0,20,0)#">
  <cfset This.applicationtimeout="#createtimespan(5,0,0,0)#">
  --Entered cfcomponent--
  <cffunction name="onApplicationStart" returnType="boolean" output="false">
    --Entered Application Start--
    <cfset application.portfolioUploadRoot = "ram:///portfoliouploads">
    <cfif not directoryExists(application.portfolioUploadRoot)>
      <cfdirectory action="create" directory="#application.portfolioUploadRoot#">
    </cfif>
    <cfreturn true>
  </cffunction>
  <cffunction name="onSessionStart" returnType="void" output="false">
    --Entered Session Start--
    <cfset session.myuploadroot = application.portfolioUploadRoot & "/" & replace(createUUID(), "-", "_", "all")>
    <cfif not directoryExists(session.myuploadroot)>
      <cfdirectory action="create" directory="#session.myuploadroot#">
    </cfif>
  </cffunction>
  <cffunction name="onApplicationEnd" returnType="void" output="false">
    --Entered Application End--
    <cfargument name="applicationScope" required="true">
    <cfif directoryExists(arguments.applicationScope.portfolioUploadRoot)>
      <cfdirectory action="delete" recurse="true" directory="#arguments.applicationScope.portfolioUploadRoot#">
    </cfif>
  </cffunction>
  <cffunction name="onSessionEnd" returnType="void" output="false">
    --Entered Session End--
    <cfargument name="sessionScope" type="struct" required="true">
    <cfargument name="appScope" type="struct" required="false">
    <cfif directoryExists(arguments.sessionScope.myuploadroot)>
      <cfdirectory action="delete" recurse="true" directory="#arguments.sessionScope.myuploadroot#">
    </cfif>
  </cffunction>
</cfcomponent>

The result only shows "--Entered cfcomponent--" on the beginning of cfmpage.cfm.

cfmpage.cfm:

<cfparam name="form.textname" default="">
<cfparam name="form.textemail" default="">
<cfparam name="form.docattach" default="">
<cfif structKeyExists(form, "Submit")>
<cfset form.textname = trim(htmlEditFormat(form.textname))>
<cfset form.textemail = trim(htmlEditFormat(form.textemail))>
<cflocation url="formcomplete.cfm" addToken="false">
</cfif>
<!DOCTYPE html>
<html>
  <head>
    ...
  </head>
  <body>
    <form method="post" enctype="multipart/form-data">
      <cfoutput>
        <input id="textname" name="textname" type="text" class="input-large" required="" value="#form.textname#">
        <input id="textemail" name="textemail" type="text" class="input-large" required="" value="#form.textemail#">
      </cfoutput>
    </form>
  </body>
</html>

Original Q&A

There are 1 best solutions below

**Regular Jo** · Accepted Answer

It is doing as it should.

onApplicationStart -- Runs when ColdFusion receives the first request for a page in the application.
    For this, to easily see this, you can try changing the name of the application, then
    visit a page within.

onSessionStart -- Only run upon the first visit within the session. If you wait til after the
    timeout and then come back, you'll see this. Changing the application name will should also
    retrigger this.

onSessionEnd -- Run when the session ends. It will trigger after the timeout, it's used so that
    you can clean up activity. For instance, if you're using something like Application.NumberOnline.
    OnSessionEnd can substract one (where onSessionStart) can add one.

onApplicationEnd -- Runs when the application timeout occurs or the server is shutting down.

Neither of the latter two will ever show any text on screen because you can't see that event while visiting the page. You can however call them manually to trigger their effects. You can, however, log these actions however you choose. You may use cflog, for instance, in this fashion:

<cffunction name="onApplicationEnd">
    <cfargument name="ApplicationScope" required=true/>
    <cflog file="#This.Name#" type="Information" 
        text="Application #Arguments.ApplicationScope.applicationname# Ended" >
</cffunction>

In other words:

<cfscript>
   ap      =   createObject("component","Application");
   ap.onSessionEnd(session,application);
</cfscript>

Will display the text because it is firing the event.

Finally, if you're wanting something to happen on each page, onRequestStart and onRequestEnd or onRequest are great options. OnRequest is a method that wraps around the page, so you can do header and footer actions in the same request, but you must explicitly include the file, wheras onRequestStart / onRequestEnd execute at the start and end of the request.

The order of action methods invoked is

onApplicationStart (runs on first application activity)
onSessionStart (runs on first session activity)
onRequestStart
onRequest
onRequestEnd

Lastly, functions don't fire unless they're called. This applies to functions you write yourself as well.

<cfscript>
  function foo() {
    writeoutput("bar");
  }
</cfscript>

Won't do anything until you actually try something like <cfoutput>#foo()#</cfoutput>.

In the case of "default functions", these are just special functions/methods that CF calls at certain points if they're present.

apllication.cfc does not fire any default cffunction? Coldfusion

There are 1 best solutions below

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