public String selectedCAorMA {get;set;}
public Boolean selectedCAProcessed {get;set;}
public Boolean selectedMAProcessed {get;set;}
public String description {get;set;}
private Refugee__c refugee {get;set;}
public String fileName {get;set;}
public Blob fileBody {get;set;}

public UploadAttachmentController(ApexPages.StandardController controller) {
    this.refugee = (Refugee__c)controller.getRecord();
}

// creates a new Refugee_Attachment__c record
private Database.SaveResult saveCustomAttachment() {
    Refugee_Attachment__c obj = new Refugee_Attachment__c();
    obj.refugee__c = refugee.Id;
    obj.description__c = description;
    obj.CA_or_MA__c = selectedCAorMA;
    obj.CA_Processed__c = selectedCAProcessed;
    obj.MA_Processed__c = selectedMAProcessed;
    // fill out cust obj fields
    return Database.insert(obj);
}

// creates an actual Attachment record with the Refugee_Attachment__c as parent
private Database.SaveResult saveStandardAttachment(Id parentId) {
    Database.SaveResult result;

    Attachment attachment = new Attachment();
    attachment.body = this.fileBody;
    attachment.name = this.fileName;
    attachment.parentId = parentId;
    // insert the attachment
    result = Database.insert(attachment);
    // reset the file for the view state
    fileBody = Blob.valueOf(' ');
    return result;
}

/**
* Upload process is:
*  1. Insert new Refugee_Attachment__c record
*  2. Insert new Attachment with the new Refugee_Attachment__c record as parent
*  3. Update the Refugee_Attachment__c record with the ID of the new Attachment
**/
public PageReference processUpload() {
    try {
        Database.SaveResult customAttachmentResult = saveCustomAttachment();

        if (customAttachmentResult == null || !customAttachmentResult.isSuccess()) {
            ApexPages.AddMessage(new ApexPages.Message(ApexPages.Severity.ERROR,
              'Could not save attachment.'));
            return null;
        }

        Database.SaveResult attachmentResult = saveStandardAttachment(customAttachmentResult.getId());

        if (attachmentResult == null || !attachmentResult.isSuccess()) {
            ApexPages.AddMessage(new ApexPages.Message(ApexPages.Severity.ERROR,
              'Could not save attachment.'));
            return null;
        } else {
            // update the custom attachment record with some attachment info
            Refugee_Attachment__c customAttachment = [select id from Refugee_Attachment__c where id = :customAttachmentResult.getId()];
            customAttachment.name = this.fileName;
            customAttachment.Attachment__c = attachmentResult.getId();
            update customAttachment;
        }

    } catch (Exception e) {
        ApexPages.AddMessages(e);
        return null;
    }

    return new PageReference('/'+Refugee.Id);
}

public PageReference back() {
    return new PageReference('/'+Refugee.Id);
}