Implementing Custom History related list (error)

Question

Trying to implement history related list on a custom visual force page, the source code is here github. The problem now i'm facing is that I'm getting an error which I'm not sure what does it means. I have the custom object name called Employee__c and my VF controller name called EmployeeController

Error:

Unknown property 'EmployeeController.Employee__c'

Page:

<c:GenericHistoryComponent recordLimit1="50" myObject1="{!Employee__c}"/>

Component:

<apex:component controller="GenericHistoryComponentController">

    <!-- Attribute Definition -->
    <apex:attribute name="myObject1" description="Object we wish to view the history of" type="SObject" required="true" assignTo="{!myObject}" />
    <apex:attribute name="recordLimit1" description="Number of lines of history to display" type="Integer" required="false" assignTo="{!recordLimit}" />

    <apex:form >
        ....
    </apex:form>
</apex:component>

Class:

public class GenericHistoryComponentController {

    // External variables
    public SObject myObject {get; set;}
    public Integer recordLimit {get; set;}
    public Integer updatedRecordLimit {get; set;}
    public Integer tableSize {get; set;}
    public static String objectLabel {get;}
    public Id myObjectId {get;set;}
    public Integer rowCount {get;set;}
    // Internal Variables
    public objectHistoryLine[] objectHistory; 

    public static final Map<String, Schema.SObjectType> mySObjectTypeMap = Schema.getGlobalDescribe();
    public static Map<String, Schema.SObjectField> myObjectFieldMap;
    public static List<Schema.PicklistEntry> historyFieldPicklistValues;

    public List<objectHistoryLine> getObjectHistory(){
        if(updatedRecordLimit != null){
            recordLimit = updatedRecordLimit;
        }else{
            updatedRecordLimit = recordLimit;
        }

    // if no object passed in, return empty list
        if (myObject == null) {
            return new List<objectHistoryLine>();
        }

        myObjectId = String.valueOf(myObject.get('Id'));
        Schema.DescribeSObjectResult objectDescription = myObject.getSObjectType().getDescribe();

        myObjectFieldMap = objectDescription.fields.getMap();
        objectLabel = String.valueOf(objectDescription.getLabel());

        //Get the name of the history table
        String objectHistoryTableName = objectDescription.getName();

        //ID field name         
        string ObjectIdName; 

        list<sObject> historyList = Database.query( 'SELECT CreatedDate,'+
                                                    'CreatedById,'+
                                                    'Field,'+
                                                    'NewValue,'+
                                                    'OldValue ' +
                                                    'FROM ' + objectHistoryTableName + ' ' +
                                                    'WHERE ' + ObjectIdName + ' =\'' + myObjectId + '\' ' +
                                                    'ORDER BY CreatedDate DESC');




         return objectHistory;
    }    

    public PageReference refreshObjectHistory(){
        updatedRecordLimit = updatedRecordLimit + recordLimit;
        getObjectHistory();
        return null;
    }


}

Answer 1

Try this -

VF Controller:

 public class EmployeeController {
      public Employee__c emp {get;set;}
      public EmployeeController() { 
        String idStr = ApexPages.currentPage.getParameters().get('id');
        emp = new Employee__c(Id= idStr);//Change this initialization as per your need. }
    }

VF Page:

<c:GenericHistoryComponent recordLimit1="50" myObject1="{!emp}"/>