View and Controller not working

MrSWatson · November 25, 2008, 3:43am

Hello,

I created a controller named animals and a .rhtml file called hello.

There is nothing in the controller, but there is “hello, world!” in
the .rhtml.

I booted up webbrick and typed “http://localhost:3000/animals/hello”
and it should have displayed “hello, world!” instead it gave me this
error.

MissingSourceFile in AnimalsController#hello

no such file to load – sqlite3

Any ideas?

RAILS_ROOT: C:/InstantRails/rails_apps/view_demo
Application Trace | Framework Trace | Full Trace

C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/
dependencies.rb:153:in require' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/ dependencies.rb:521:in new_constants_in’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/
dependencies.rb:153:in require' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/ core_ext/kernel/requires.rb:7:in require_library_or_gem’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/
core_ext/kernel/reporting.rb:11:in silence_warnings' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/ core_ext/kernel/requires.rb:5:in require_library_or_gem’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/sqlite3_adapter.rb:10:in sqlite3_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ connection_adapters/abstract/connection_pool.rb:223:in send’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_pool.rb:223:in
new_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ connection_adapters/abstract/connection_pool.rb:245:in checkout_new_connection’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_pool.rb:188:in checkout' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ connection_adapters/abstract/connection_pool.rb:184:in loop’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_pool.rb:184:in checkout' C:/Ruby/lib/ruby/1.8/monitor.rb:242:in synchronize’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_pool.rb:183:in checkout' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ connection_adapters/abstract/connection_pool.rb:98:in connection’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_pool.rb:326:in
retrieve_connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ connection_adapters/abstract/connection_specification.rb:121:in retrieve_connection’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
connection_adapters/abstract/connection_specification.rb:113:in
connection' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/ query_cache.rb:8:in cache’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
caching/sql_cache.rb:12:in perform_action' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ base.rb:524:in send’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
base.rb:524:in process_without_filters' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ filters.rb:606:in process_without_session_management_support’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
session_management.rb:134:in process' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ base.rb:392:in process’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
dispatcher.rb:183:in handle_request' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ dispatcher.rb:110:in dispatch_unlocked’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
dispatcher.rb:123:in dispatch' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ dispatcher.rb:122:in synchronize’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
dispatcher.rb:122:in dispatch' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/ dispatcher.rb:132:in dispatch_cgi’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/
dispatcher.rb:39:in dispatch' C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb: 103:in handle_dispatch’
C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb:74:in
service' C:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in service’
C:/Ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in run' C:/Ruby/lib/ruby/1.8/webrick/server.rb:173:in start_thread’
C:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in start' C:/Ruby/lib/ruby/1.8/webrick/server.rb:162:in start_thread’
C:/Ruby/lib/ruby/1.8/webrick/server.rb:95:in start' C:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in each’
C:/Ruby/lib/ruby/1.8/webrick/server.rb:92:in start' C:/Ruby/lib/ruby/1.8/webrick/server.rb:23:in start’
C:/Ruby/lib/ruby/1.8/webrick/server.rb:82:in start' C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb:60:in dispatch’
C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/servers/
webrick.rb:66
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/
dependencies.rb:153:in require' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/ dependencies.rb:521:in new_constants_in’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/
dependencies.rb:153:in require' C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/server.rb:49 C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require’
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require’
script/server:3

This error occurred while loading the following files:
sqlite3

MrSWatson · November 25, 2008, 3:58am

On Nov 24, 9:41 pm, “Mr. Watson” [email protected] wrote:

MissingSourceFile in AnimalsController#hello

Hey there. To create a basic, custom controller action, you need to do
three things:

Create a method in the controller. In your case you’d need:
class AnimalsController < ApplicationController
def hello
end
end
Create a view template for the action to render. In your case,
you’d need app/views/animals/hello.html.erb .
Create a route to the custom controller action. In your case, you’d
need this in config/routes.rb :
map.resources :animals, :collection => :hello

Since you’re getting started with Rails, I highly recommend reading
through Agile Web D. With Rails:
Pragmatic Bookshelf: By Developers, For Developers

Cheers,
Nick

MrSWatson · November 25, 2008, 4:00am

You have to configure Database in config/database.yml - and install
sqlite or mysql gem (db adapters, according to which db you want to
use).

But its obvious that the application you are building now doesnt
require any database, but rails needs a database connection by
default. So either create a dummy database for rails to connect to,

OR

In config/environment.rb, inside the Rails::Initializer block, add
this line:

config.frameworks -= [ :active_record ]