Passing an argument with cfobject

[Newsgroup_User]

I am attempting to pass an argument to a cfc to get the results back to the
calling page and am a wee bit confused.

Here is my <cfobject>:
<cfobject name="EditProject" component="sf_main.components.SingleProjects">
<cfset myProject = EditProject.GetProject(project_id=#URL.project_id#)>

I am attempting to pass the argument project_id to the cfc:

<cffunction name="GetProject" access="remote" returntype="query">
<cfargument name="project_id" type="numeric" required="true">
<cfquery name="projects" datasource="#Request.MainDSN#">
SELECT p.title, p.summary, p.duedate, c.company
FROM project P LEFT OUTER JOIN client C ON p.client=c.username
Where project_id=#argument.project_id# AND dirname='#Session.MM_Username#'
</cfquery>
<cfreturn projects>
</cffunction>

I keep getting and error saying that the argument "project_id" is undefined.
What do I have to change on what to get it to pass correctly?

Also, how do I pass multiple arguments to a cfc using this method?

Thanks! I am just learning how to create and use CFCs, so bear with me. :-)

--
Wally Kolcz
Developer / Support

[Newsgroup_User]

Ok, I thought I was getting smarter. I found you can use cfinvoke after a
cfobject. I thought I could then use the cfinvokeagrument to pass the
argument to the cfc, but it still fails.
I have this now on my calling page:

<cfobject name="EditProject" component="sf_main.components.SingleProjects">
<CFINVOKE COMPONENT="#EditProject#" METHOD="GetProject"
returnvariable="ProjectInfo">
<cfinvokeargument name="project_id" value="#URL.project_id#">
</cfinvoke>

But it is still coming up with the error:

Element PROJECT_ID is undefined in ARGUMENT.

Any ideas or help?

[ksmith]

Try <cfset myProject = EditProject.GetProject(URL.project_id)> after your cfobject call.

[Dan_Bracuk]

quote:

---

Originally posted by: Newsgroup User
I am attempting to pass an argument to a cfc to get the results back to the
calling page and am a wee bit confused.
Here is my <cfobject>:
<cfobject name="EditProject" component="sf_main.components.SingleProjects">
<cfset myProject = EditProject.GetProject(project_id=#URL.project_id#)>
I am attempting to pass the argument project_id to the cfc:

<cffunction name="GetProject" access="remote" returntype="query">
<cfargument name="project_id" type="numeric" required="true">
<cfquery name="projects" datasource="#Request.MainDSN#">
SELECT p.title, p.summary, p.duedate, c.company
FROM project P LEFT OUTER JOIN client C ON p.client=c.username
Where project_id=#argument.project_id# AND dirname='#Session.MM_Username#'
</cfquery>
<cfreturn projects>
</cffunction>

I keep getting and error saying that the argument "project_id" is undefined.
What do I have to change on what to get it to pass correctly?

Also, how do I pass multiple arguments to a cfc using this method?

Thanks! I am just learning how to create and use CFCs, so bear with me. :-)

--
Wally Kolcz
Developer / Support

---

You are so close. You only missed one letter.
This
Where project_id=#argument.project_id#
should be this
Where project_id=#argumentS.project_id#

Plus, you made one other mistake. cfcs don't recognize the session scope, which leads to your next question:
Also, how do I pass multiple arguments to a cfc using this method?

There are at least two ways. You can use the cfinvokeargument tag or you can use the argumentcollection attribute of the cfinvoke tag. I prefer the latter.

[Newsgroup_User]

Thanks, that solved my problem.
BTW a cfc can recognize a session. I use it all the time and it works fine.