Dynamic select list @www.stonemind.net

Hi,
Has anyone read the web page by “Adding Dynamic Select Lists to
Resource Scaffolding in Rails” at
http://www.stonemind.net/blog/2007/09/26/adding-dynamic-select-lists-to-resource-scaffolding-in-rails/
by Adam Smith. The logic is easy to follow. The codes are easy too.

I followed the tutorial. I worked thru it twice. I might have
misplaced one or two lines of the codes. I got errors and errors. They
want us to buy the book. Any advice?
regards,

On Apr 5, 2:29 pm, Dror C. [email protected]
wrote:

Hi,
Has anyone read the web page by “Adding Dynamic Select Lists to
Resource Scaffolding in Rails” athttp://www.stonemind.net/blog/2007/09/26/adding-dynamic-select-lists-…
by Adam Smith. The logic is easy to follow. The codes are easy too.

I followed the tutorial. I worked thru it twice. I might have
misplaced one or two lines of the codes. I got errors and errors. They
want us to buy the book. Any advice?
regards,

Hard to say without knowing errors you have got (and where etc…)

Fred

Thank you Fred,

I copied all the errors below. I am a non-programmer. I don’t know
what is wrong with line 13 in categories/new.html.erb. The tutorial
states that such line is to be inserted into the file in replacing the
existing parent form field. The originalfile is shown immediately below:

<h1>Editing category</h1>

<%= error_messages_for :category %>

<% form_for(@category) do |f| %>
  <p>
   <b>Name</b><br />
    <%= f.text_field :name %>
  </p>

  <p>
    <b>Parent</b><br />
    <%= f.text_field :parent_id %>
  </p>

  <p>
    <%= f.submit "Update" %>
  </p>
<% end %>

<%= link_to 'Show', @category %> |

<%= link_to ‘Back’, categories_path %>
regards,

Errors:
Processing CategoriesController#new (for 127.0.0.1 at 2008-04-05
21:54:56) [GET]
Session ID:
BAh7BzoMY3NyZl9pZCIlMTgzNGViZDcyNmI3ZmIwMTU5MDk2YWMxYTUwZjVk%0AOTAiCmZsYXNoSUM6J0FjdGlvbkNvbnRyb2xsZXI6OkZsYXNoOjpGbGFzaEhh%0Ac2h7AAY6CkB1c2VkewA%3D–6e8e3ef6b8a0cd94d01e2bfe86ffe0c7a7688f01
Parameters: {“action”=>“new”, “controller”=>“categories”}
Category Columns (0.002429) SHOW FIELDS FROM categories
Category Load (0.000357) SELECT * FROM categories ORDER BY
parent_id, name
Rendering template within layouts/categories
Rendering categories/new

ActionView::TemplateError (Couldn’t find template file for
categories/_select_category in ["/var/www/test/app/views"]) on line #13
of categories/new.html.erb:
10:
11:


12: Parent

13: <%= render(:partial => “select_category”) %>
14:


15:
16:

/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:312:in 

render_file' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:331:inrender’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/partials.rb:117:in
render_partial' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:26:inbenchmark’
/usr/lib/ruby/1.8/benchmark.rb:293:in measure' /usr/lib/ruby/1.8/benchmark.rb:307:inrealtime’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:26:in
benchmark' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/partials.rb:116:inrender_partial’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:352:in
render' app/views/categories/new.html.erb:13:in_run_erb_47app47views47categories47new46html46erb’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/helpers/form_helper.rb:248:in
fields_for' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/helpers/form_helper.rb:184:inform_for’
app/views/categories/new.html.erb:5:in
_run_erb_47app47views47categories47new46html46erb' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:637:insend’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:637:in
compile_and_render_template' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:365:inrender_template’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_view/base.rb:316:in
render_file' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1100:inrender_for_file’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:858:in
render_with_no_layout' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:872:inrender_with_no_layout’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/layout.rb:262:in
render_without_benchmark' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:51:inrender’
/usr/lib/ruby/1.8/benchmark.rb:293:in measure' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:51:inrender’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:131:in
send' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:131:incustom’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:156:in
call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:156:inrespond’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:150:in
each' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:150:inrespond’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/mime_responds.rb:107:in
respond_to' app/controllers/categories_controller.rb:30:innew’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in
send' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:inperform_action_without_filters’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in
call_filters' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:inperform_action_without_benchmark’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in
perform_action_without_rescue' /usr/lib/ruby/1.8/benchmark.rb:293:inmeasure’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in
perform_action_without_rescue' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:inperform_action_without_caching’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in
perform_action' /usr/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:incache’
/usr/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in
cache' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:inperform_action’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in
send' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:inprocess_without_filters’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in
process_without_session_management_support' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session_management.rb:123:inprocess’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in
process' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:171:inhandle_request’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in
dispatch' /usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:indispatch_cgi’
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in
dispatch' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/rails.rb:76:inprocess’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/rails.rb:74:in
synchronize' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/rails.rb:74:inprocess’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:159:in
process_client' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:158:ineach’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:158:in
process_client' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:285:inrun’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:285:in
initialize' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:285:innew’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:285:in
run' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:268:ininitialize’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:268:in
new' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb:268:inrun’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:282:in
run' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:281:ineach’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/configurator.rb:281:in
run' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/mongrel_rails:128:inrun’
/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel/command.rb:212:in
run' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.4/bin/mongrel_rails:281 /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:inload’
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in
load' /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:innew_constants_in’
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in
load' /usr/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:ingem_original_require’
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
require' /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:inrequire’
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in
new_constants_in' /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:inrequire’
/usr/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
gem_original_require' /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:inrequire’
script/server:3

Rendering
/usr/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/templates/rescues/layout.erb
(internal_server_error)

Thank you very very much.

_select_category.html.erb was not there because there was a
_select_categories.rhtml.

Ror has been changing all the time.

regards,

On Apr 5, 3:09 pm, Dror C. [email protected]
wrote:

14:


15:
16:

Rails is telling you what the problem is. You’ve told it ‘render me
the contents of the file _select_category.html.erb’ and it’s telling
you ’ I couldn’t find that file)

Fred

On Apr 5, 3:59 pm, Dror C. [email protected]
wrote:

Thank you very very much.

_select_category.html.erb was not there because there was a
_select_categories.rhtml.

Ror has been changing all the time.

.rhtml still works, the problem was of course category vs categories.

Fred

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