Formatting a date in a SQL query in Rails
If you need to use a date/time in a SQL fragment in Ruby on Rails you can format it using the to_formatted_s method.
num_entries_in_last_24_hours = Entry.count(:conditions => “created_at < '#{24.hours.ago.to_formatted_s(:db)}'") [/ruby] This works for mysql, not sure about other databases. Here's the relevant API link.
posted 1:18 am
Isn’t it more portable to use the “?” notation:
num_entries_in_last_24_hours = Entry.count(:conditions => [“created_at
July 29th, 2006 at 9:08 am
Hmm, looks like Ryan’s comment got cut off — I assume he’s suggesting something like:
Entry.count(:conditions => ["created_at < ?", 24.hours.ago.to_formatted_s(:db)])And, yep, that seems like a better way to go!
Luke
July 29th, 2006 at 9:13 pm
When you use the ? notation, you don’t need to format the string.
Entry.count(:conditions => [“created_at
May 15th, 2009 at 5:35 pm
When you use Entry.connection.select_values(“SELECT e.something FROM entries e WHERE…” you do need to convert, there is no ‘?’ args there. And sometimes you really need it to get a reasonably fast and effective code
August 8th, 2012 at 3:55 pm