Thanks. Another problem solved. Roelof
Op dinsdag 23 oktober 2012 17:10:51 UTC+2 schreef Norm het volgende: > > You need something like > > class IdCategory < ActiveRecord::Migration > def up > add_column :bericht, 'id_category', :integer > end > > def down > end > end > > You can use either strings or symbols. > > Norm > > On 10/23/2012 08:03 AM, roelof wrote: > > Sorry I dont help me > > I did rails g migration id_category bericht > And changed the migration file to this > > class IdCategory < ActiveRecord::Migration > def up > add_column :bericht, id_category, number > end > > def down > end > end > > After that I did rake db:migrate and get this output : > > == IdCategory: migrating > ===================================================== > -- id_category() > rake aborted! > An error has occurred, this and all later migrations canceled: > > undefined local variable or method `id_category' for > #<IdCategory:0x00000004c3f0d8> > > Tasks: TOP => db:migrate > (See full trace by running task with --trace) > > Roelof > > > > Op dinsdag 23 oktober 2012 16:56:42 UTC+2 schreef BalaRaju Vankala het > volgende: >> >> you have to create a new migration for add_column >> using rails g migration col_name_table_name >> in that migration file you have to follow below syntax >> >> >> def up >> add_column : table_name, column_name, data_type >> end >> >> i hope its help to you.. >> On Tue, Oct 23, 2012 at 8:19 PM, roelof <[email protected]> wrote: >> >>> Hello, >>> >>> I try to add a column named id_category to my database table berichten. >>> So I have this : >>> >>> class Bericht < ActiveRecord::Migration >>> def up >>> add_column :berichten do [t] >>> t.column :name, 'id_category' >>> end >>> end >>> def down >>> end >>> end >>> >>> But I get wrong number ( 1 of 3 ) error message. >>> >>> Can anyone tell me what's wrong here so I can learn to write my own >>> migrations. >>> >>> Roelof >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Ruby on Rails: Talk" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msg/rubyonrails-talk/-/_J0oNDSxy9QJ. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> >> >> >> >> >> -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]<javascript:> > . > To unsubscribe from this group, send email to > [email protected] <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/Y-uT61sr6GoJ. > For more options, visit https://groups.google.com/groups/opt_out. > > > > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/Hwaez3v2qoIJ. For more options, visit https://groups.google.com/groups/opt_out.
