Simple question
In rails I have an ApplicationHelper method
def sum_customer_yearly_revenue(customer_id, year)
sum_customer_yearly_revenue = Sale.sum(:net_amount, :conditions => ['customer_id = ? AND financial_year = ?', customer_id, year])
end
In my view I then call sum_customer_yearly_revenue(123456, 2014). How do I call the same method but with 'all' years. If I was using SQL it would be sum_customer_yearly_revenue(123456, *) but that returns an error. If it pass in "" it looks for a year that is empty. If I leave it blank it just errors aswell.
def sum_customer_yearly_revenue(customer_id, year="all")
sales = Sale.where(customer_id: customer_id)
sales = sales.where(year: year) if year!="all"
sales.sum(:net_amount)
end
This might be useful to you. In this case if you want to retrieve sum for all year there is no necessary to pass second argument.
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