Rails - Jun 2006 - uninitialized constant Datetime

I am building an application and I have generated the scaffold for a 
product.
In the list method I include something like
my_date = Datetime.now

and the result I get from the webrick is an error

uninitialized constant Datetime

Do I have to add a line with a require?
I am new at ruby on rails

thanks in advance

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enrique barraorion wrote:
> I am building an application and I have generated the scaffold for a 
> product.
> In the list method I include something like
> my_date = Datetime.now
> 
> and the result I get from the webrick is an error
> 
> uninitialized constant Datetime
> 
> Do I have to add a line with a require?
> I am new at ruby on rails
Ruby is case-sensitive. The name of the class is DateTime. You''ll also 
need to require ''date'' in order to use it.

You may like to consider using the faster Time class instead of 
DateTime. The only real problem with Time is that on some platforms it 
cannot handle dates earlier than 1970 or later than 2037.

-- 
Philip Ross
http://tzinfo.rubyforge.org/ -- DST-aware timezone library for Ruby

On Sun, 2006-06-18 at 14:36 +0200, enrique barraorion
wrote:
> I am building an application and I have generated the scaffold for a 
> product.
> In the list method I include something like
> my_date = Datetime.now
> 
> and the result I get from the webrick is an error
> 
> uninitialized constant Datetime
> 
> Do I have to add a line with a require?
> I am new at ruby on rails
----
no - I think you should try, DateTime.now

Craig

Craig White wrote:
> On Sun, 2006-06-18 at 14:36 +0200, enrique barraorion wrote:
>> I am new at ruby on rails
> ----
> no - I think you should try, DateTime.now
> 
> Craig

Ok thanks, i did not know it was case sensitive.
but I still have a problem, I am trying to select from a mysql database 
events from a start_date to a end_date (columns that are of type 
timestamp)
and I do:
datetime_start_day = DateTime.now
datetime_end_day = datetime_start_day +1
EventDatetime.find_all(:conditions => ["start_date > ? AND end_date
<
?", datetime_start_day, datetime_end_day])
  end

Mysql::Error: You have an error in your SQL syntax; check the manual 
that corresponds to your MySQL server version for the right syntax to 
use near ''? AND end_date < 
?2006-06-18T19:49:02+02002006-06-19T19:49:02+0200)'' at line 1: SELECT *
FROM event_datetimes WHERE (conditionsstart_date > ? AND end_date < 
?2006-06-18T19:49:02+02002006-06-19T19:49:02+0200)

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I have solved the problem. thanks anyway
it was
EventDatetime.find_all ["start_date > ? AND end_date < ?", 
datetime_start_day.to_s , datetime_end_day.to_s]


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