Problems occur during production, but not in development

Rails
1

Hi,

Basically I’ve created a system with categories, that belong to
tutorials, and these tutorials have positions.
I’ve only recently created to new position thing, and I’ve added this
to my edit form:

<%= f.label :position %>
<%= f.text_field :position %>

This works fine in production mode, and everything is as it should be.
However when I upload it to my actual site (so it goes to production
mode) it says an error has occured. And the production log gives out
this error:

ActionView::TemplateError (undefined method `position’ for #<Tutorial:
0xb752a384>) on line #21 of app/views/tutorials/edit.html.erb:
18:


19:


20: <%= f.label :position %>

21: <%= f.text_field :position %>
22:


23:


24: <%= f.submit ‘Update’ %>

app/views/tutorials/edit.html.erb:21
app/views/tutorials/edit.html.erb:4

Since it mentions line four, I figured I should show you guys line
four as well:

<% form_for(@tutorial) do |f| %>

I don’t know why it wont work. Everything else that’s like this works,
for example the category_id:

<%= f.label :category_id %>
<%= f.text_field :category_id %>

I just can’t figure out why it won’t work,

Please Help,

Thanks In Advance,

Joe

2

On 16 May 2010 08:27, Joe [email protected] wrote:

This works fine in production mode, and everything is as it should be.

I guess you meant ok in development.

22:


23:


24: <%= f.submit ‘Update’ %>

app/views/tutorials/edit.html.erb:21
app/views/tutorials/edit.html.erb:4

Did you remember to run the migration on the production db so that the
new column is there?

Colin

3

Ok. Found it out and it works.

Thanks for your help, I can’t belive I didn’t even know about
migrating in production mode (I remember I had the problem before, but
couldnt remember how I fixued it (must have been via this method)).

If anyone wants to know how: rake db:migrate RAILS_ENV=“production”

Thanks so much!

-Joe

4

I did mean OK in development.

And as for running the migration on production. I wasn’t even aware I
could do that. I just run rake db:migrate.

How can I run the migration on production? (I’ll be googling while
waiting for a reply :P),

Thanks for your help,

-Joe

5

Joe wrote:

Ok. Found it out and it works.

Thanks for your help, I can’t belive I didn’t even know about
migrating in production mode (I remember I had the problem before, but
couldnt remember how I fixued it (must have been via this method)).

If anyone wants to know how: rake db:migrate RAILS_ENV=“production”

Better yet, set up Capistrano, which automates this and most other
deployment tasks.

Thanks so much!

-Joe

Best,

Marnen Laibow-Koser
http://www.marnen.org
[email protected]