Ruby On Rails: friendly_id on acts_as_taggable_on, updating slug column

Question

I think I have it setup properly per these answers

But when I'm trying to update the slug column in an existing app like so for my tags:

Tag.find_each(&:save)

I'm getting this error:

NameError: uninitialized constant Tag

Is Tag not the correct one?

EDIT: FULL ERROR LOG

  ActsAsTaggableOn::Tag Load (0.8ms)  SELECT  "tags".* FROM "tags"  ORDER BY "tags"."id" ASC LIMIT 1000
   (0.2ms)  BEGIN
   (0.4ms)  ROLLBACK
NoMethodError: undefined method `slugged' for #<ActsAsTaggableOn::Tag:0x007faafaefc458>
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activemodel-4.2.2/lib/active_model/attribute_methods.rb:433:in `method_missing'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/friendly_id-5.1.0/lib/friendly_id/slugged.rb:295:in `should_generate_new_friendly_id?'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/friendly_id-5.1.0/lib/friendly_id/slugged.rb:304:in `set_slug'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:432:in `block in make_lambda'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:164:in `call'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:164:in `block in halting'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:504:in `call'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:504:in `block in call'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:504:in `each'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:504:in `call'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:92:in `_run_callbacks'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/callbacks.rb:776:in `_run_validation_callbacks'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activemodel-4.2.2/lib/active_model/validations/callbacks.rb:113:in `run_validations!'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activemodel-4.2.2/lib/active_model/validations.rb:334:in `valid?'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.2/lib/active_record/validations.rb:58:in `valid?'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.2/lib/active_record/validations.rb:83:in `perform_validations'
... 20 levels...
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/console.rb:9:in `start'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
    from /Users/hellomello/sites/project_app/bin/rails:8:in `<top (required)>'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `load'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `block in load'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/hellomello/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `load'
    from /Users/hellomello/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/hellomello/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from -e:1:in `<main>'2.2.1 :042 >

K M Rakibul Islam · Answer 1 · 2015-08-20T04:18:49.333

0

NameError: uninitialized constant Tag

It means that Tag class was not loaded in the environment.

Try to use the name scoped name like: ActsAsTaggableOn::Tag (like the link you posted) rather than Tag only. Also, see if you need to require the act_as_taggable_on.rb file somewhere so that it loads properly. This error happens when the class doesn't load properly.

Did you add the new class to the /lib/ directory? Then, check (or add) if you have something like this in your application.rb file:

config.autoload_paths += %W(#{config.root}/lib)

edited Aug 20 '15 at 04:18

answered Aug 20 '15 at 04:07

K M Rakibul Islam

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I'm getting close. I did `ActsAsTaggableOn::Tag.find_each(&:save)` but returning this error now: `NoMethodError: undefined method 'slugged' for #`. And I added the file named `acts_as_taggable_on.rb` to my `/initializers/` folder. And I don't know what the autoload_paths do – hellomello Aug 20 '15 at 04:20
can you paste the full error log in your question section? – K M Rakibul Islam Aug 20 '15 at 04:26
I think, you need to use: `Model.friendly.find` rather than `Model.find` – K M Rakibul Islam Aug 20 '15 at 04:29
what's your `friendly_id` gem version? – K M Rakibul Islam Aug 20 '15 at 04:30
Hello, I updated to show error. The error is coming from doing the find_each(&:save) when I'm trying to update my slug column – hellomello Aug 20 '15 at 04:30
Try: `Model.friendly.find_each` insted. see if that works – K M Rakibul Islam Aug 20 '15 at 04:31
I believe its the most up to date. I didn't set a version in my gem file. 5.1.0 – hellomello Aug 20 '15 at 04:31
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/87436/discussion-between-k-m-rakibul-islam-and-hellomello). – K M Rakibul Islam Aug 20 '15 at 04:32
@hellomello is there any update on this? I was waiting for your github repo! Let me know! – K M Rakibul Islam Aug 22 '15 at 04:19
oh!! hello! sorry, dang. Been really busy. I was trying to work on it myself for awhile. I'm going to try to work on it this weekend. If you don't mind, I'll email you when its finally up! Sorry!! No need to wait on me! – hellomello Aug 22 '15 at 05:18
No problem, just shoot me an email when the project is up on github and give me collaboration access. – K M Rakibul Islam Aug 22 '15 at 05:19

Ruby On Rails: friendly_id on acts_as_taggable_on, updating slug column

1 Answers1