I'm using Rails and in a controller, I have a database called log_cons and it has an entry all filled in whereby the first column is "id" and the value is "1"
@log_cons = LogCon.all
puts @log_cons[1].id
This outputs to the browser:
Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id
and prints an empty line in the terminal.
What could be some potential reasons for this?
LogCon.find() will return an ActiveRecord object, not an array.
Thus you can just get the id like so:
@log_cons = LogCon.all
puts @log_cons[0].id
or
puts @log_cons.first.id
LogCon.all will return all the objects, then you can just loop through each of the elements like so LogCon.all.each { |o| puts o.id }@log_cons.first.id
first is much more elegant.If you want all records, do
@log_cons = LogCon.all
and then access the first one doing
puts @log_cons[0].id
@log_cons[0].id is the first result.puts @log_cons[0].id instead of puts @log_cons[1].id