ok so hopefully i explain this correctly. So i have a VF page i have created (code will be below) that captures data from the user. What i need to have happen is when the record is saved it should be associated with a parent campaign. So the campaign is the master detail reocrd i want to have all records from the VF page associated with. I have the VF page working and am trying to right a controller to connect the master detail record (campaign Id) to the child record.

So in short user goes to VF page fills in data and when they hit save system relates this record to a campaign. Is this even possible?

VF Code:

<apex:page standardController="Spiff_Request__c">
  <apex:form >
    <apex:pageBlock title="Spiff Request" mode="Create">
                  
              <apex:pageBlockButtons >
                <apex:commandButton action="{!edit}" id="editButton" value="Edit"/>
                <apex:commandButton action="{!save}" id="saveButton" value="Save"/>
                <apex:commandButton onclick="resetInlineEdit()" id="cancelButton" value="Cancel"/>
              </apex:pageBlockButtons>

     <apex:pageBlockSection title="Spiff Request" columns="2">
         <apex:inputField value="{!Spiff_Request__c.When_was_date_of_Meeting__c}"/> <br></br>
         <apex:inputField value="{!Spiff_Request__c.Product_Interest__c}"/> <br></br>
         <apex:inputField value="{!Spiff_Request__c.New_Customer__c}"/> <br></br>
         <apex:inputField value="{!Spiff_Request__c.Reseller_Company_Name__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Customer_Name__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Reseller_Phone__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Customer_Phone__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Address_to_send_Spiff_to__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Customer_Address__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Who_Attended_Partner_Imperva__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Who_Attended_Customer__c}"/>
         <apex:inputField value="{!Spiff_Request__c.Additional_Details__c}"/>
     </apex:pageBlockSection>
 
    </apex:pageBlock>
  </apex:form>
</apex:page>
             

Controller class code: (this is where im trying to pass the ID to match child recod to parent (the error i get is :

Save error: Initial term of field expression must be a concrete SObject: String)

public

withsharingclass CampaignID {

publicCampaign campaignID       {get;set;}

public CampaignID(ApexPages.StandardController sc)

{

  campaignID = sc.getID()campaign_ID;

}

public PageReference saveAndReject() {

PageReference requestPage = Page.AccountRecord;

requestPage.getParameters().put(campaignID,

Spiff_Request__c.CampaignID__c);

requestPage.setRedirect(

true);

return

requestPage;

}

}

I havent added the controller into the VF code yet becasue i cant get it to save.

Thanks for all replys....