Hi,
I''m creating a simple Migration that adds test data to my database.
A Form has many Elements and every Element belongs to a Form. An element has
the mandatory columns name, type and value.
---
class AddTestData < ActiveRecord::Migration
def self.up
Form.delete_all
Element.delete_all
bert = Form.create(:name => "Bert''s Form")
Element.create(:form => bert, :name => ''First Name'',
:type => ''text'',
:value => '''')
Element.create(:form => bert, :name => ''Last Name'',
:type => ''text'',
:value => '''')
ernie = Form.create(:name => "Ernie''s Form")
Element.create(:form => ernie, :name => ''Your Name'',
:type => ''text'',
:value => '''')
Element.create(:form => ernie, :name => ''E-mail'',
:type => ''text'',
:value => '''')
end
def self.down
Form.delete_all
Element.delete_all
end
end
---
Gives the error:
Mysql::Error: #23000Column ''type'' cannot be null: INSERT INTO
`elements`
(`form_id`, `ordering`, `name`, `title`, `type`, `value`, `flags`,
`created_at`, `updated_at`) VALUES(2, NULL, ''First Name'',
NULL, NULL, '''',
NULL, ''2008-09-16 13:59:36'', ''2008-09-16
13:59:36'')
As you can see, the ''type'' column somehow isn''t
inserted.
I had similar issues when trying to add a column called
''timestamp''.
Best regards,
CmdJohnson
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"type" is a reserved field name for single table inheritance (STI): http://wiki.rubyonrails.com/rails/pages/MagicFieldNames We''re using "timestamp" without a problem in some of our apps, so that must be another issue. On 16 Sep 2008, at 16:09, Commander Johnson wrote:> I''m creating a simple Migration that adds test data to my database. > > A Form has many Elements and every Element belongs to a Form. An > element has the mandatory columns name, type and value. > > --- > > class AddTestData < ActiveRecord::Migration > def self.up > Form.delete_all > Element.delete_all > > bert = Form.create(:name => "Bert''s Form") > Element.create(:form => bert, :name => ''First Name'', :type => > ''text'', :value => '''') > Element.create(:form => bert, :name => ''Last Name'', :type => > ''text'', :value => '''') > > ernie = Form.create(:name => "Ernie''s Form") > Element.create(:form => ernie, :name => ''Your Name'', :type => > ''text'', :value => '''') > Element.create(:form => ernie, :name => ''E-mail'', :type => > ''text'', :value => '''') > end > > def self.down > Form.delete_all > Element.delete_all > end > end > > --- > > Gives the error: > > Mysql::Error: #23000Column ''type'' cannot be null: INSERT INTO > `elements` (`form_id`, `ordering`, `name`, `title`, `type`, `value`, > `flags`, `created_at`, `updated_at`) VALUES(2, NULL, ''First Name'', > NULL, NULL, '''', NULL, ''2008-09-16 13:59:36'', ''2008-09-16 13:59:36'') > > As you can see, the ''type'' column somehow isn''t inserted. > > I had similar issues when trying to add a column called ''timestamp''.Best regards Peter De Berdt --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Commander Johnson wrote: ...snip...> Gives the error: > > Mysql::Error: #23000Column ''type'' cannot be null: INSERT INTO `elements` > (`form_id`, `ordering`, `name`, `title`, `type`, `value`, `flags`, > `created_at`, `updated_at`) VALUES(2, NULL, ''First Name'', NULL, NULL, > '''', > NULL, ''2008-09-16 13:59:36'', ''2008-09-16 13:59:36'') > > As you can see, the ''type'' column somehow isn''t inserted.From looking at that error it''s clear that the 5th value sent is NULL which is your `type` column. So your problem is not with MySQL. Given that Rails uses a "type" column for single-table inheritance, maybe that has something to do with your issue.> I had similar issues when trying to add a column called ''timestamp''.MySQL has a TIMESTAMP data type. I would guess that you could use that as a column name as long as it''s quoted properly (i.e. `timestamp`). I tend to avoid naming columns with likely database keywords (type, timestamp, data, time, number, text, etc.). P.S. I also avoid using TIMESTAMP data type in MySQL. It''s may not behave as you might expect it to. If a column of that type is not send in a UPDATE statement it will automatically update itself to the current time of the database server. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---