I use CFC's to render pods of dynamic content in MG, and I find it very
useful.
for example -
controller method:
<cffunction name="doRenderNavLan" access="public" returnType="void"
output="false">
<cfargument name="event" type="any">
<cfset var currentUrl = arguments.event.getValue("self") & '?' &
cgi.query_string />
<cfset arguments.event.SetValue("renderedNavLan",
getRenderPod().renderNavLan(currentUrl))>
</cffunction>
rendering method within RenderPod:
<cffunction name="renderNavLan" access="public" returntype="string"
output="false">
<cfargument name="currentUrl" required="true" type="string">
<cfset var rootUrl = "" />
<cfset var renderedContent = "">
<cfset var qActiveLans = getAdminGateway().findActiveLanguages() />
<cfset var index = listcontainsnocase(arguments.currentUrl,
"setlan=", "&")>
<cfif index GT 0>
<cfset rootUrl = listdeleteat(arguments.currentUrl, index, "&")>
<cfelse>
<cfset rootUrl = arguments.currentUrl />
</cfif>
<cfoutput>
<cfsavecontent variable="renderedContent">
<cfloop query="qActiveLans">
<a class="navLan"
href="#rootUrl#&setlan=#lan#">#UCase(lan)#</a><cfif qActiveLans.currentrow
NEQ qActiveLans.recordcount>|</cfif>
</cfloop>
</cfsavecontent>
</cfoutput>
<cfset renderedContent = REReplace(renderedContent,
"[[:space:]]{2,}","","ALL") />
<cfreturn renderedContent />
</cffunction>
And then with the appropriate wiring in ModelGlue.xml, I can drop this bit
of code into any view template and I have my rendered navigation for
switching languages:
#viewstate.getValue("renderedNavLan")#
I keep separate CFCs for rendering stuff, to help preserve MVC separation.
In a few cases, I've passed a Render cfc into the view template to
dynamically render some very complex dynamic html.
I find it extremely versitile.
Nando
On Fri, Feb 27, 2009 at 1:21 AM, Miki Tracey <[email protected]> wrote:
> amusingly enough i realized while attempting to implement it that the
> formatting was different each time and decided to skip it this time. Some
> day i won't have to do four different views WITH DIFFERENT formatting
> codes. Sigh!
>
>
> On Thu, Feb 26, 2009 at 3:09 PM, Doug Boude <[email protected]> wrote:
>
>> Hi Miki.
>>
>> In thinking about doing what you're describing, here's how I believe I
>> would do it:
>>
>> within the controller that retrieves the raw data set, I would instantiate
>> a "formatter" object (some cfc with a method that accepts an incoming
>> structure of field/value pairs and turns it into a formatted string). I
>> would create a private helper function in my controller that grabs an entire
>> given row from my raw query, then I would loop over my raw query, retrieving
>> each row as I go and feeding it to the formatter object's method. Okay,
>> enough words; here's the pseudocode to describe what I'm talking about:
>>
>> <cfset var stData = structnew() />
>> <cfset var stFormatted = structnew() />
>>
>> <!--- get raw query... --->
>> <cfset stData.raw = objDataObject.getDataQuery() />
>>
>> <!--- loop over raw query, transforming each row into a formatted string
>> within a struct key in the stFormatted structure... --->
>> <cfloop query="stData.raw">
>> <cfset stFormatted[recordID] =
>> objFormatter.formatRow(argumentCollection=getQueryRow(current)) />
>> </cfloop>
>>
>> <cfset stData.formatted = stFormatted />
>>
>> <cfset arguments.event.setValue("stData",stData) />
>>
>>
>> Now, as proof of concept I created some code that runs locally using
>> QuerySim to create some data. This code works, so maybe it'll help lend
>> fodder to your creative fire:
>>
>> <cf_querysim>
>> UserInfo
>> userID,firstName,lastName,userGroups
>> 100|Stan|Cox|33
>> 200|Joe|Blow|35
>> 300|Doug|Boude|21
>> 400|Jim|Pickering|15
>> </cf_querysim>
>>
>> <cfset stData = structnew() />
>> <cfset stFormatted = structnew() />
>> <cfset stData.raw = getDataQuery() />
>> <cfloop query="stData.raw">
>> <cfset stFormatted[userID] =
>> formatRow(argumentcollection=getRow(currentrow)) />
>> </cfloop>
>> <cfset stData.formatted = stFormatted />
>> <!--- <cfset arguments.event.setValue("stData",stData) /> --->
>>
>> <cfscript>
>> function getDataQuery(){
>> return UserInfo;
>> }
>> function getRow(rowid){
>> var retval = structnew();
>> var colList = listToArray(UserInfo.columnlist);
>> for (i=1;i lte arraylen(colList); i = i + 1){
>> retval[colList[i]] = UserInfo[colList[i]][rowid];
>> }
>> return retval;
>> }
>> </cfscript>
>> <cffunction name="formatRow" access="public" returntype="any">
>> <cfset var retval = "" />
>> <cfset retval =
>> "<b>#arguments.firstname# #arguments.lastname# #arguments.usergroups#</b>"
>> />
>> <cfreturn retval />
>> </cffunction>
>>
>> <cfdump var="#stData#">
>>
>>
>> Hope this helps!
>>
>> Doug Boude :0)
>>
>>
>>
>> On Thu, Feb 26, 2009 at 11:59 AM, Miki Tracey <[email protected]>wrote:
>>
>>> i've had my head buried in this code since my last post but now i'm
>>> encountering something that i may be able to solve with a function in the
>>> CFC
>>>
>>> basically i have four different layouts for one set of data. Each layout
>>> has one or more cfscript tags that convert the raw text into formatted
>>> paragraphs of one type or other. And this is FINE except for one thing.
>>> Within four days i've gotten the cfscripts to end up so much differently
>>> from each other that i'm not sure i can get them aligned. It occurred to me
>>> that if i just fed the data to an object that does the work for me i could
>>> only have to keep one script for formatting and update only it. (yay
>>> reuse) (yes, i am able to put that in a cfm and call it into the page if it
>>> comes down to that, but i'd rather do it 'right-ish')
>>>
>>> But I am having trouble using UDFs in model glue (which is just fine by
>>> me) however i'm at a complete loss how to use model glue to format the
>>> text. I considered doing it in the master controller, just instantiating
>>> another object and doing it there, but that will only format one db record,
>>> the rest will be unformatted, so it seems like the smart place to do it is
>>> in the cfoutput in each page.
>>>
>>> Once upon a time i used Java and JSP and this made sense, but i've mostly
>>> been a linear programmer for ten years, and so OO is giving me headaches.
>>>
>>> So i have two questions
>>> - can i use objects in my code that are instantiated in the controller
>>> but functions are not run on them? if so, how do i do that
>>> OR
>>> - do i need to instantiate within the cfm page as per how one did it
>>> before one put a framework around one's cold fusion?
>>>
>>> I am going to poke at it and hope i get it working tonite, but since i
>>> have the delay anyway, i might as well ask for your advice since you guys
>>> all rock and all. And examples would really rock, however i didn't find
>>> anything searching the example directory view cfms for function calls.
>>> (though that could just be my relative lack of search fu)
>>>
>>> --
>>> Miki Tracey
>>> Administrator
>>> Ice and Fire USA
>>> [email protected]
>>>
>>>
>>>
>>
>>
>>
>
>
> --
> Miki Tracey
> Administrator
> Ice and Fire USA
> [email protected]
>
> >
>
--
Nando M. Breiter
The CarbonZero Project
CP 234
6934 Bioggio
Switzerland
+41 76 303 4477
[email protected]
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