Comments on: Creating Your First Ruby on Rails Application From Scratch

By: Rekha

Rekha — Thu, 22 Jul 2010 15:02:50 +0000

I have tried this but in half way I get stuck.. I dont know wats the prob. http://localhost:3000/ is working but when i change to http://localhost/details is not working. the page created is like this

ActiveRecord::StatementInvalid in DetailsController#index

Mysql::Error: Table ‘hi.details’ doesn’t exist: SELECT * FROM `details`

RAILS_ROOT: D:/RekhaMol/Rails/New
Application Trace | Framework Trace | Full Trace

C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract_adapter.rb:221:in `log’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/mysql_adapter.rb:323:in `execute’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/mysql_adapter.rb:638:in `select’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all_without_query_cache’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:81:in `cache_sql’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all’
C:/Ruby186/lib/ruby/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql’

By: Nivedita

Nivedita — Sat, 19 Jun 2010 02:48:39 +0000

I forgot to mention about rails version I am using

rails 2.3.8
ruby 1.8.6
gems 1.3.7
mysql 5.0.67

I am using mysql 5.0.67 because I read in some blog that it is compatible with ROR
I was not able to connect mysql 5.1.47 to ROR

By: Nivedita

Nivedita — Sat, 19 Jun 2010 02:46:00 +0000

I am very confused reg installing gems. where do i need to install them? in the directory where ruby is installed or in every rails application that is created? same doubt about gem install mysql also.
also i am not able to run rake db:migrate, though I can run rake rails:freeze:gems
And when I run gem install mysql, i am getting this

C:\Documents and Settings\Nivedita\autograph>gem install my
Successfully installed mysql-2.8.1-x86-mswin32
1 gem installed
Installing ri documentation for mysql-2.8.1-x86-mswin32…

No definition for next_result

No definition for field_name

No definition for field_table

No definition for field_def

No definition for field_type

No definition for field_length

No definition for field_max_length

No definition for field_flags

No definition for field_decimals

No definition for time_inspect

No definition for time_to_s

No definition for time_get_year

No definition for time_get_month

No definition for time_get_day

No definition for time_get_hour

No definition for time_get_minute

No definition for time_get_second

No definition for time_get_neg

No definition for time_get_second_part

No definition for time_set_year

No definition for time_set_month

No definition for time_set_day

No definition for time_set_hour

No definition for time_set_minute

No definition for time_set_second

No definition for time_set_neg

No definition for time_set_second_part

No definition for time_equal

No definition for error_errno

No definition for error_sqlstate
Installing RDoc documentation for mysql-2.8.1-x86-mswin32..

No definition for next_result

No definition for field_name

No definition for field_table

No definition for field_def

No definition for field_type

No definition for field_length

No definition for field_max_length

No definition for field_flags

No definition for field_decimals

No definition for time_inspect

No definition for time_to_s

No definition for time_get_year

No definition for time_get_month

No definition for time_get_day

No definition for time_get_hour

No definition for time_get_minute

No definition for time_get_second

No definition for time_get_neg

No definition for time_get_second_part

No definition for time_set_year

No definition for time_set_month

No definition for time_set_day

No definition for time_set_hour

No definition for time_set_minute

No definition for time_set_second

No definition for time_set_neg

No definition for time_set_second_part

No definition for time_equal

No definition for error_errno

No definition for error_sqlstate

autograph is my rails application.
I am using windows vista
i tried on windows 7 too
same situation.
Please help me out. I am really in a hurry in finishing the project. I just had two more days to go.

Thanks in advance

By: Nivedita

Nivedita — Fri, 18 Jun 2010 22:02:34 +0000

Also one weird thing happening is after setting up my database, when I run commands
rake rails:freeze:gems
rake db:migrate
I am getting error “rake aborted!” no rake file to load
only few times I am getting this error, not all the times.
Some times, I was able to run those commands and built the migrations.
I never understand the reason behind it.
Please help me in fixing this error.

I am using mysql database and I configured accordingly in config/database.yml.
Also do we need to install the scaffold plugin for every application we run?

Thanks in Advance !!
Nivedita

By: Nivedita

Nivedita — Fri, 18 Jun 2010 21:50:54 +0000

yeah it worked….thanks for the help !!

By: Jerod Santo

Jerod Santo — Fri, 18 Jun 2010 16:53:40 +0000

the ‘rm’ command is specific to UNIX-based systems. In Windows you should use the ‘del’ command instead.

Hope that helps!

By: Nivedita

Nivedita — Thu, 17 Jun 2010 23:15:14 +0000

Hey thanks for the tutorial. Its a good start to deploy a rails application, as I am very new to ruby.
I am unable to delete default index page with “rm public/index.html”. when I run the command, I got the error

‘rm’ is not recognized as an internal or external command,
operable program or batch file.

I am working on windows 7. Please help me out in fixing it.

Thanks
Nivedita

By: Mageshcse

Mageshcse — Fri, 04 Jun 2010 16:18:13 +0000

@venkat @mariam: i’m glad it helped you :)

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By: Mariam

Mariam — Sun, 07 Mar 2010 07:11:23 +0000

Really well done.. I feel like I have some basic understanding now to move forward. This tutorial was a nice way to explain the basic framework in order to get the big picture. Now I can go and dive into the details. It helps to a get a general sense of how this works before getting started. Thanks so much!

By: Venkat Mantirraju

Venkat Mantirraju — Sat, 05 Dec 2009 08:54:09 +0000

Hi Magesh,
I am good in java and wanted to learn Ruby on Rails. Your article had helped me a lot to learn quickly my first ruby on rails app. Nice explanation.

Thanks,
Venkat

By: mageshcse

mageshcse — Thu, 03 Dec 2009 16:36:34 +0000

do u mean testing in the browser? if yes then check out cucumber..
for writing tests do check this http://guides.rubyonrails.org/testing.html

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