The dreaded "Before updating scaffolding from new DB schema,


#1

Hi
Can any one help me with this? I think that this is soemthing quite
simple as there is quite abit traffic about this on the web and everyone
sems to figure it out. I have tried most of the solutions that I can
find. but nothing.

I have mysql 5.0.11 working on linux redhat 9. ruby is working rails
install mysql library seem to be there.
to some trying rt get mysql to install need to point the installer to
the correct mysql. I have the table created an am usein the example in
linux journal to test it out.

I am new to ruby and rails but think it may have potential for some
ideas I have.

[derek@192 Blog]$ script/generate scaffold Blog Admin
exists app/controllers/
exists app/helpers/
exists app/views/admin
exists test/functional/
dependency model
exists app/models/
exists test/unit/
exists test/fixtures/
identical app/models/blog.rb
identical test/unit/blog_test.rb
identical test/fixtures/blogs.yml
error Before updating scaffolding from new DB schema, try
creating a table for your model (Blog)

my database

MySQL (default setup). Versions 4.1 and 5.0 are recommended.

Get the fast C bindings:

gem install mysql

(on OS X: gem install mysql – --include=/usr/local/lib)

And be sure to use new-style password hashing:

http://dev.mysql.com/doc/refman/5.0/en/old-client.html

development:
adapter: mysql
database: blog_development
username: derek
password: wcug13
socket: /tmp/mysql.sock

Connect on a TCP socket. If omitted, the adapter will connect on

the

domain socket given by socket instead.

#host: localhost
#port: 3306

Warning: The database defined as ‘test’ will be erased and

re-generated from your development database when you run ‘rake’.

Do not set this db to the same as development or production.

test:
adapter: mysql
database: blog_test
username: derek
password: wcug13
socket: /tmp/mysql.sock

production:
adapter: mysql
database: blog_production
username: derek
password: wcug13
socket: /tmp/mysql.sock

Derek


#2

You just need to create a ‘blog’ table in your database before running
the scaffold generator.

It should have an ‘id’ column at least.

BTW…I wouldn’t recommend posting the password to your mysql server in
the mailing list, even if it is just a development machine.


#3

Are you sure the database table exists and the username/password is
correct?

Try connecting to mysql from the command prompt using that username and
password and see what happens.

Cheers

Tim


#4

Kevin O. wrote:

You just need to create a ‘blog’ table in your database before running
the scaffold generator.

It should have an ‘id’ column at least.

BTW…I wouldn’t recommend posting the password to your mysql server in
the mailing list, even if it is just a development machine.

One thousand thank yous. The problem was I did create a “Blog” table
instad of a “blog” table. I suspect that I had some library problems at
first as well.

Any way thanks again
Derek