tags with same name / one lowercase

[keyranova]

acts_as_taggable_on: 3.4 gem
rails: 4.2.2

I'm currently coding a cms with tagging and although autocomplete is added and working for tags, someone managed to duplicate a tag with lowercase instead of uppercase.

While the current tag "Branding" returned around 72 results, the newly added tag "branding" caused both tagged_with queries to return 0 results. Any possible validation to not allow an already available tag with just a different case?

[alexcp]

You can set the option ActsAsTaggableOn.force_lowercase = true in config/initializers/acts_as_taggable_on.rb to ensure tags are saved in lowercase.

[starspace1]

The solution above works for preventing that problem in the future. Is there anything built in to deal with existing duplicates? It's not possible to rename the first "Branding" tag as "branding" without first removing the "branding" tag.

[Ricardonacif]

@starspace1 I had to create a class to clean them up. Basically calling both methods on the tag with upcase chars:

class TagCleaner
  class << self

    def transfer_taggings_associations_and_delete from_tag, to_tag
      from_tag.taggings.find_each do |tagging|
        to_tag.taggings << tagging.dup
      end
      from_tag.destroy
    end

    def find_or_create_lowercase_related_tag tag
      lowercase_tag = ActsAsTaggableOn::Tag.find_or_create_by(name: tag.name.downcase)
    end
  end

end