Checking if ActiveRecord find returns a result

Question

I\'m trying to check if a find method returns a result. My find method is the following:

post = Post.find(:all, :conditions => { :url => params[\'url\'] },         


        

Answer 1

Post.find_by_id(id_column_value)

will return nil rathering than blowing up your program when it can't find a record.

Of course, there's

x = Post.where(:any_column_name => value) 

which always returns an array of results. In which case you could just run an

x.each {|t| f(t) }

or

y = x.map {|t| f(t)}

or of course,

x[0], x[1], etc

Sorry I got a little carried away there