public class CreateMultiExtraBoost {

	public List<cBoost> boostList {get; set;}
    public Id opportunityId {get;set;}
        
    // Constructor 
    public CreateMultiExtraBoost (){
    	opportunityId =  ApexPages.currentPage().getparameters().get('oppId');
    }

	//Methode
	public List<cBoost> getBoosts() { 
		if(boostList == null) {
			boostList = new List<cBoost>();
			for(FinalBoost__c fb: [select Id, Name from FinalBoost__c ]) {
				boostList.add(new cBoost(fb));

			}
		}
		return boostList;
	}

	public PageReference save() {
       
		List<FinalBoost__c> selectedBoosts = new List <FinalBoost__c>();
        List<XtraBoostOpp__c> boostItems = new List <XtraBoostOpp__c>(); 
        pagereference oppPage = new pagereference('/' + opportunityId);
    
		for(cBoost cbInList: getBoosts ()) {
			if(cbInList.selected == true ) {
				selectedBoosts.add(cbInList.fbo);
			}
		}

		System.debug('These are the selected ...');
		for(FinalBoost__c con: selectedBoosts) {
			system.debug(con);
		}
        
        for (FinalBoost__c fboInList: selectedBoosts) {
            	
            	XtraBoostOpp__c boost = new XtraBoostOpp__c ();
            	boost.FinalBoost__c = fboInList.Id;
            	boost.Opportunity__c = opportunityId;
            	boost.Menge__c = //user input variable 
				boostItems.add(boost);
    
       }
        insert boostItems;
        return oppPage;
	}
    
   
   // WrapperClass
	public class cBoost {
		public FinalBoost__c fbo {get; set;}
		public Boolean selected {get; set;}
        public Integer menge {get; set;} // user input variable 

		//WrapperClass Constructor 
      public cBoost(FinalBoost__c f) {
			this.fbo = f;
			this.selected = false;
          	this.menge = 0;
      }
	}
}