Hey

I have a VF page with a VF component on it. The component has an attribute which is of the page controllers type. I am attempting to pass the page controller into the component controller and then have the component controller populate a value on the page controller. 

The Component is to allow the adding of an attachment to an object and the object is referenced on the page's controller:

Component Markup:

<apex:component controller="UploadComponentController" >
	<apex:attribute name="pageController" description="This is the controller of the page which the component is on." type="UploadPageController" required="true" assignTo="{!pageController}"/>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.pack.js"></script>
<script type="text/javascript" >
	$(document).ready(function() {
		
	if($('div.trigger').length > 0) {
		$('div.trigger').click(function() {
			if ($(this).hasClass('open')) {
				$(this).removeClass('open');
				$(this).addClass('close');
				$(this).next().slideDown(200);
				return false;
			} else {
				$(this).removeClass('close');
				$(this).addClass('open');
				$(this).next().slideUp(200);
				return false;
			}			
		});
	}
	
});
</script>
    <apex:form enctype="multipart/form-data">
      <div class="trigger open"><a href="#">Upload</a></div> 
			<div class="cnt"> 
				    <apex:pageBlock >
				 
				      <apex:pageBlockSection showHeader="false" columns="2" id="block1">
				 
				        <apex:pageBlockSectionItem >
				          <apex:outputLabel value="File Name" for="fileName"/>
				          <apex:inputText value="{!attachment.name}" id="fileName"/>
				        </apex:pageBlockSectionItem>
				 
				        <apex:pageBlockSectionItem >
				          <apex:outputLabel value="File" for="file"/>
				          <apex:inputFile value="{!attachment.body}" filename="{!attachment.name}" id="file"/>
				        </apex:pageBlockSectionItem>
				 
				        <apex:pageBlockSectionItem >
				          <apex:outputLabel value="Description" for="description"/>
				          <apex:inputTextarea value="{!attachment.description}" id="description"/>
				        </apex:pageBlockSectionItem>
				 
				      </apex:pageBlockSection>
				 
				    </apex:pageBlock>
	</div> 
    </apex:form>
 
    <style type="text/css">
	    .trigger,.trigger a {
			display: block;
			width: 60px;
			height: 20px;
			text-indent: -999999em;
			overflow: hidden;
	    }
  		.trigger {
			background: url({!$Resource.Button}) no-repeat 0px 0px;
		}
		.close {
			background: url({!$Resource.Button}) no-repeat 0px -20px;
		}
		.cnt {
			display: none;
			padding: 10px;
			margin: 10px;
			background: #f9f9f9;
		}
    </style>
</apex:component>

Component Controller:

public with sharing class UploadComponentController 
{
	public UploadPageController pageController {get; set;}
	
	
	public Attachment getAttachment()
	{
		return pageController.attach;
	}
	
	public void setAttachment(Attachment a)
	{
		pageController.attach = a;
	}
	
}

Page Markup:

<apex:page controller="UploadPageController">
	<apex:pageBlock title="New TestObject">
	<apex:pageMessages />
 		<apex:pageBlockSection >
 			<apex:form >
				<apex:outputLabel value="Object Name" for="objName"/>
				<apex:inputText value="{!name}" id="objName" />
			</apex:form>
		</apex:pageBlockSection>
		<apex:pageBlockSection >
			<c:uploadComponent pageController="{!controller}" />
		</apex:pageBlockSection>
		<apex:pageBlockSection >
			<apex:form >
				<apex:commandButton action="{!save}" value="Save"/>
			</apex:form>
		</apex:pageBlockSection>
	</apex:pageBlock>  
</apex:page>

Page Controller:

public with sharing class UploadPageController
{ 
	public Attachment attach {get; set;}
	
  	private TestObject__c m_testObj = new TestObject__c();
  		
  	public UploadPageController()
  	{
  		attach = new Attachment();
  	}
  		
	public string getName()
	{
		return m_testObj.Name; 
	}
	
	public void setName(string oName)
	{
		m_testObj.Name = oName; 
	} 
	
	public UploadPageController getController()
	{
		return this;
	}
	
	public void setController(UploadPageController con)
	{
		
	}
	
	public PageReference save()
	{
		insert m_testObj;
 		
    	attach.OwnerId = UserInfo.getUserId();
    	attach.ParentId = m_testObj.Id; // the record the file is attached to
    	attach.IsPrivate = false;
 		
    	try 
    	{
      		insert attach;
    	} 
    	catch (DMLException e) 
    	{
      		ApexPages.addMessage(new ApexPages.message(ApexPages.severity.ERROR,'Error uploading attachment'));
      		return null;
    	}
    	finally 
    	{
      		attach = new Attachment(); 
    	}
 
    	ApexPages.addMessage(new ApexPages.message(ApexPages.severity.INFO,'Attachment uploaded successfully'));
    	
		PageReference page = new ApexPages.StandardController(m_testObj).view();
		page.setRedirect(true);
		return page;
	}
}

I get an error of "Cannot insert attachment, fields missing : File Name, Body" or somethng to that affect. Any ideas? I can't see why this isn't working!

Thanks 

Paul