Funny singularization/constantization in scaffold controller

rubyonrails-talk
1

Hi all. I'm new to Ruby and Rails so please bear with. I'm creating an app to maintain a birders life list. One of the Models I need is Genus. The plural of Genus is Genera. So, my table is titled Genera and in my genus.rb I have the line 'self.table_name = "genera"'. My first hurdle was that when I generate the scaffold it still wanted a table called genus. Got around that by creating a view genus as suggested somewhere. Now the scaffold (genus_maint) generates but when I try to execute I get a "uninitialized constant Genu" when the list method is trying to paginate:

'@genus_pages, @genus = paginate :genus, :per_page => 10'

It's as if rails is trying to singularize "genus". Actually, what it is really trying to do is constantize it.

Here's the full trace:

/Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in `const_missing' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:131:in `const_missing' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/inflector.rb:161:in `constantize' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/string/inflections.rb:59:in `constantize' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:194:in `paginator_and_collection_for' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/pagination.rb:129:in `paginate' #{RAILS_ROOT}/app/controllers/genus_maint_controller.rb:12:in `list' #{RAILS_ROOT}/app/controllers/genus_maint_controller.rb:3:in `index' /Applications/Locomotive2/Bundles/standardRailsSept2006.locobundle/i386/bin/mongrel_rails:18

Hope this looks okay. I haven't tried any formatting on this question.

TIA for any advice.

the goob

2

Hmmm. Maybe in environment.rb an inflection rule? Sorry, should have looked a little farther before posting.

3

Okay. modified environment.rb with:

Inflector.inflections do |inflect|     inflect.irregular 'genus', 'genera' end

regenerated the model (still had to had the self.table_name = "genera" to genus.rb)

regenerated the scaffold and voila

4

the goob wrote:

Hi all. I'm new to Ruby and Rails so please bear with. I'm creating an app to maintain a birders life list. One of the Models I need is Genus. The plural of Genus is Genera.

Rails is not *that* clever when working out the plural or singular versions of names - it makes good guesses though. You will need to specify this in your config/environment.rb file:

Inflector.inflections do |inflect|   inflect.irregular 'genus', 'genera' end

5

askegg wrote:

Inflector.inflections do |inflect| inflect.irregular 'genus', 'genera' end

Can't you just

   require 'latin'

?

<a pause>

Ouch! Don't hit! Don't hit!!

6

Ha

require 'little_latin' require 'less_greek' whatever works

this got caught by my spam filter so a slow reply.

take care