public static IQueryable ApplyFilterItem(this IQueryable query, FilterItem filter)
{
var exp = query.Expression;
var param = Expression.Parameter(query.ElementType);
var body = filter.GetExpression(param);
if (body != null)
{
var whereLambdaExpression = Expression.Lambda(body, param);
var whereExpression = Expression.Call(QueryableInfo.Where.MakeGenericMethod(param.Type), exp, whereLambdaExpression);
return(query.Provider.CreateQuery(whereExpression));
}
return(query);
}