I Love ColdFusion

I was at the point to adding Validation to my Model tBLog engine, a transposition of Mark Mandel's tBlog example application to Model Glue Unity.

ARG, I don't want to muck up controller or model code with Validation! Where the heck will it go cleanly? Example of updatePost:

ModelGlue.xml:

<!--
updatePost
Description: I submit the frmPost.cfm form
-->
<event-handler name="updatePost">
 <broadcasts>
  <message name="checkUserLogin" />
  <message name="updatePost" />
 </broadcasts>
 <results>
  <result do="listPosts" />
 </results>
</event-handler>

BlogController.cfc (Front controller for HTML requests):

<!--- updatePost --->
<cffunction name="updatePost" hint="I ask the model to save / update a Post." access="public" returnType="any" output="false">
 <cfargument name="event" type="any" />

 <!--- get the values from the framework --->
 <cfset var ID = arguments.event.getValue("ID") />
 <cfset var Title = arguments.event.getValue("Title") />
 <cfset var body = arguments.event.getValue("body") />
 <cfset var PostFile = arguments.event.getValue("PostFile") />
 <cfset var VideoFile = arguments.event.getValue("VideoFile") />
 <cfset var Category = arguments.event.getValue("Category") />
 <cfset var User = arguments.event.getValue("User") />
 <cfset var IDComment = arguments.event.getValue("IDComment") />

 <!--- ask the model to update the Post --->
 <cfset var updatePost = variables.BlogService.updatePost(ID, Title, body, PostFile, VideoFile, Category, User, IDComment) />

 <cfreturn arguments.event />
</cffunction>

BlogService.cfc (service layer to react to requests, HTML front controller or remote requests):

<!--- updatePost --->
<cffunction name="updatePost" hint="I ask Transfer to update a post." access="public" displayname="Save Post" returntype="any" output="false">
 <cfargument name="ID" hint="I am the ID of the Post that is being updated.<br />I am required.">
 <cfargument name="Title" hint="I am the Title of the post.<br />I am required.">
 <cfargument name="body" hint="I am the body of the post.<br />I am required.">
 <cfargument name="PostFile" hint="I am the PostFile of the post.">
 <cfargument name="VideoFile" hint="I am the VideoFile of the post.">
 <cfargument name="Category" hint="I am the list of Catagories of the post.<br />I am required.">
 <cfargument name="User" hint="I am the User who posted the post.<br />I am required.">
 <cfargument name="IDComment" hint="I am the list of comments that will be deleted.<br />I am required.">

 <!--- get the post --->
 <cfset var post = variables.transfer.get("post.Post", arguments.ID) />
 <!--- make and array of the incomming category ID's --->
 <cfset var categories = listToArray(arguments.category)>
 <cfset var len = ArrayLen(categories) />
 <cfset var PostFileName = "" />
 <cfset var VideoFileName = "" />

 <!--- check if there is a file --->
 <cfif len(arguments.PostFile)>
  <cfset PostFileName = variables.FileService.uploadPostFile(arguments.PostFile) />
  <!--- set the PostFileName --->
  <cfset post.setPostFileName(PostFileName) />
 </cfif>

 <!--- check if there is a video --->
 <cfif len(arguments.VideoFile)>
  <cfset VideoFileName = variables.FileService.uploadVideo(arguments.VideoFile) />
  <!--- set the VideoFileName --->
  <cfset post.setVideoFileName(VideoFileName) />
 </cfif>

 <!--- set the title and body --->
 <cfset post.setTitle(arguments.title) />
 <cfset post.setBody(arguments.Body) />

 <!--- set the user --->
 <cfset post.setUser(variables.transfer.get("user.User", arguments.user)) />

 <!--- clear out the categories --->
 <cfset post.clearCategory() />

 <!--- loop through the categories and add them back in --->
 <cfloop from="1" to="#len#" index="counter">
  <cfset category = variables.transfer.get("system.Category", categories[counter]) />
  <cfset post.addCategory(category) />
 </cfloop>

 <!--- do sorting afterwould to make sure they are in the right order --->
 <cfset post.sortCategory() />

 <!--- delete the comments that are selected --->
 <cfif (StructKeyExists(arguments, "IDComment"))>
  <cfset IDComments = listToArray(arguments.IDComment) />
  <cfset len = ArrayLen(IDComments) />
  <cfloop from="1" to="#len#" index="counter">
   <cfset comment = transfer.get("post.Comment", IDComments[counter]) />

   <!--- comment is removed implicitely from Post on delete --->
   <cfset x = transfer.delete(comment) />
  </cfloop>
 </cfif>

 <!--- save the Post --->
 <cfset x = transfer.save(post) />

</cffunction>

FileService.cfc called by BlogService.cfc(updatePost)

<!--- uploadPostFile --->
 <cffunction name="uploadPostFile" hint="I upload a file to the public file directroy. I then then retrun the name." displayname="Upload Post File" access="public" returntype="any" output="false">
  <cfargument name="PostFileName" hint="I am the file being uploaded.<br />I am required." />

   <!--- upload the single file --->
   <cffile
    action="upload"
    destination = "#ExpandPath('/com/blog/views/public/uploads/posts/')#"
    nameconflict="overwrite"
    filefield="PostFile" />
   <!--- get the file name --->
   <cfset PostFileName = (#cffile.SERVERFILE#)>

   <cfreturn PostFileName />
 </cffunction>

 <!--- uploadVideo --->
 <cffunction name="uploadVideo" hint="I parse a video into flash with FFMPEG (Google: FFMPEG), I then place the flash file into the public video directroy. I then put the uploaed video into the 'origionalvideo' folder at the COM level." displayname="Upload Video" access="public" returntype="any"output="false">
  <cfargument name="VideoFile" hint="I am the video being uploaded.<br />I am required." />

   <!--- upload the video to the a directory at the COM level --->
   <cffile
    action="upload"
    destination = "#ExpandPath('/origionalvideo/')#"
    nameconflict="overwrite"
    filefield="VideoFile" />

   <!--- convert the video with FFMPEG --->
   <cfexecute name = "#ExpandPath('/')#ffmpeg.exe"
       arguments = "-i #ExpandPath('/origionalvideo/')##cffile.SERVERFILE# -s 320x240 -r 15 -b 2000 -ar 44100 -ab 64 -ac 2 #ExpandPath('/com/blog/views/public/uploads/video/')##replace(cffile.SERVERFILE, ".", "")#.flv"
       outputFile = "C:\"
       timeout = "90000000">
   </cfexecute>

   <!--- create the file name --->
   <cfset VideoFileName = "#replace(cffile.SERVERFILE, ".", "")#.flv" />

   <cfreturn VideoFileName />
 </cffunction>

Now if anyone can tell me where a logical place to put Security or Validation is please?

ColdSpring AOP HOW I LOVE THEE:

<!--
Desicription: I am called by ColdSpring BEFORE the BlogService.cfc.
   I take the request and pass the data to the Validaiton.cfc.
   Validation.cfc checks:
   1. There is a title
   2. There is a category
   3. video is a .avi, .mpg, .mov, or .wmv.
   
-->
<bean id="ValidationAdvisor"
  class="coldspring.aop.support.NamedMethodPointcutAdvisor">
 <property name="advice">
  <ref bean="Validation" />
 </property>
 <property name="mappedNames">
  <value>updatePost</value>
 </property>
</bean>
<!-- the Validatoin.cfc called by ValidationAdvisor --->
<bean id="Validation" class="&applicationMapping;aspects.Validation" singleton="true" autowire="byName" />

<!-- I am the Proxy for the BlogService.cfc. See the TargetBlogService bean below. -->
<bean id="BlogService"
  class="coldspring.aop.framework.ProxyFactoryBean">
 <property name="target">
  <ref bean="TargetBlogService" />
 </property>
 <property name="interceptorNames">
  <list>
   <value>securityAdvisor</value>
  </list>
 </property>
</bean>

<!-- BlogService  PROXIED BY COLDSPRING -->
<bean id="TargetBlogService" class="&applicationMapping;model.BlogService" singleton="true" autowire="byName" />

I am consuming my addPost incoming request with the ColdSpring framework

My core blog code dose not change! HAPPY ME HAPPY ME!

Thanks Dave Ross! ColdSpring's AOP ROCKS