I’m very new to ruby and ruby on rails. I’m following a tutorial found
here:
I’m running NetBeans as an IDE, with jruby, rails and MySQL.
Here is the basic rundown of what I have done
Created db via Rake
Created table with 3 columns via Migration (user name:string
hobby:string age:integer)
Inserted 3 user records via Rails Console
Added additional column via Migration (AddEmailField email:string)
(Inside the migration rb → “add_column :users, :email, :string”
This is where things go poorly, I try to add a new user with the
email but get an error. Here is what I enter via Rails Console
user = User.new(:name => “TommyJones”, :hobby => “tennis”, :age => 138,
:email => “[email protected]”)
And I get the following error:
NoMethodError: undefined method email=' for #<User:0x751932> from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:251:in method_missing’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2361:in attributes=' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2360:in each’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2360:in attributes=' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2130:in initialize’
from (irb):23:in binding' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:150:in eval_input’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:259:in signal_status' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:147:in eval_input’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:146:in eval_input' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:70:in start’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:69:in catch' from C:/Program Files/NetBeans 6.5 RC2/ruby2/jruby-1.1.4/lib/ruby/1.8/irb.rb:69:in start’
from C:/Program Files/NetBeans 6.5
RC2/ruby2/jruby-1.1.4\bin\jirb:19
Being so new to this I cannot figure out why it won’t allow me to enter
a user using all the fields? If I do the same entry without the email
information to insert it still works.
Created table with 3 columns via Migration (user name:string
hobby:string age:integer)
Inserted 3 user records via Rails Console
Added additional column via Migration (AddEmailField email:string)
(Inside the migration rb → “add_column :users, :email, :string”
There should be a step 4a) here – rake db:migrate
Did you do that? If so, can you confirm that the table was altered?
This is where things go poorly, I try to add a new user with the
email but get an error. Here is what I enter via Rails Console
user = User.new(:name => “TommyJones”, :hobby => “tennis”, :age => 138,
:email => “[email protected]”)
And did you restart the console after running the migration?
Did you do that? If so, can you confirm that the table was altered?
And did you restart the console after running the migration?
Hello!
Yes I did perform the migrations and can see the new ‘email’ column in
the database. I did not restart the console however. Does Rails need
to be restarted to learn about changes like this?
And did you restart the console after running the migration?
Yes I did perform the migrations and can see the new ‘email’ column in
the database. I did not restart the console however. Does Rails need
to be restarted to learn about changes like this?
I believe so – but it should be easy enough to find out, eh?
I believe so – but it should be easy enough to find out, eh?
Let me know if that doesn’t fix the problem.
Thanks! That did the trick. So anytime I make a DB modification and am
working via the console I need to restart it so it will become aware of
the changes. Very interesting.
Thanks! That did the trick. So anytime I make a DB modification and am
working via the console I need to restart it so it will become aware of
the changes. Very interesting.
I believe you can also type app.reload! in the console.
Also, as you go forward with Rails, you might want to consider giving
jEdit a try as an IDE. It’s powerful, but much easier to work with
for Rails than are “heavier” programs like NetBeans or Eclipse. See Rails IDE: jEdit wins? - Marnen Laibow-Koser's Journal — LiveJournal for more info on configuring
jEdit.
Thanks! That did the trick. So anytime I make a DB modification and am
working via the console I need to restart it so it will become aware of
the changes. Very interesting.
I believe you can also type app.reload! in the console.
I goofed. Just type reload! (without the app. part). Sorry about
that.
