public List <Expense> GetExpenses(int userId, string searchString, DateTime?startDate, DateTime?endDate)
{
//What the query does??
//Selects the expenses based on current user session
//searches the database based on item and category if search string is not null
var expense = _expenseRepository.FindBy(x => x.CreatedBy == userId && (searchString == null || (x.Item + x.Categories.Name).Contains(searchString)) && (startDate == null || x.Date >= startDate) && (endDate == null || x.Date <= endDate))
.OrderByDescending(x => x.Id).Select(x => new Expense
{
Id = x.Id,
Amount = x.Amount,
CategoryId = x.CategoryId,
CreatedAt = x.CreatedAt,
CreatedBy = x.CreatedBy,
Date = x.Date,
Description = x.Description,
Item = x.Item,
ModifiedAt = x.ModifiedAt,
CategoryName = x.Categories.Name
}).ToList();
return(expense);
}