我正在使用ruby 1.9.3和mysql 5.5來處理Rails 3.2.9應用程序。我需要編寫一個查詢,我應該在我的控制器文件的where子句中使用用戶定義的變量。這是代碼..請讓我知道我該怎麼做!如果沒有我怎樣才能將對象轉換(我猜是這樣),我從代碼行中沒有4以便讓我可以用一個Fixnum進行比較後如何在mysql中使用ruby的用戶自定義變量?
def is_user_allowed?
@company_id = params[:user][:company_id]
#THIS LINES GIVES A SYNTAX ERROR AT '?'
@no_of_licenses = Company.find_by_sql("SELECT NO_OF_LICENSES FROM COMPANIES WHERE ID=?",@company_id)
#THIS LINE RETURNS AN OBJECT I GUESS N HENCE CANNOT COMPARE WITH FIXNUM
@no_of_licenses = Company.find(:first,:conditions => ["id = ?",@company_id] , :select => 'no_of_licenses')
@present_users = User.where("company_id = ?", @company_id).count
if @present_users < @no_of_licenses
return true
else
return false
end
end
謝謝洛特阿米特!他們都工作:) –