Rails 3 incluye las traducciones globalize3 activerecord

Question

Tengo este esquema: Publicar pertenece_ a Categoría y Categoría has_many Mensaje. Post y por categoría son globalizar con globalize3 joya

class Post < ActiveRecord::Base 
    belongs_to :category 
    translates :title, :excerpt, :desC# globalize3 
end 

class Category < ActiveRecord::Base 
    has_many :posts 
    translates :name # globalize3 
end 

En mi PostsController consigo todos los mensajes con esta línea de código:

def index 
    @posts = Post.includes([:translations, {:category => :translations}]) 
end 

El problema es que no tengo n + 1 problema de consulta con categoría traducciones tabla:

Post Load (0.3ms) SELECT "posts".* FROM "posts" 

Post::Translation Load (0.3ms) SELECT "post_translations".* FROM "post_translations" WHERE ("post_translations".post_id IN (2,3,4)) 

# START n+1 query block 
Category Load (1.9ms) SELECT "categories".* FROM "categories" WHERE ("categories"."id" IN (9,12,11)) 
Category::Translation Load (0.4ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 9) AND ("category_translations"."locale" IN ('it')) 
CACHE (0.0ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 9) AND ("category_translations"."locale" IN ('it')) 
Category::Translation Load (0.2ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 12) AND ("category_translations"."locale" IN ('it')) 
CACHE (0.0ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 12) AND ("category_translations"."locale" IN ('it')) 
Category::Translation Load (0.2ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 11) AND ("category_translations"."locale" IN ('it')) 
CACHE (0.0ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id = 11) AND ("category_translations"."locale" IN ('it')) 
# END n+1 query block 

Category::Translation Load (0.5ms) SELECT "category_translations".* FROM "category_translations" WHERE ("category_translations".category_id IN (9,12,11)) 

¿Cómo puedo resolver este problema de consulta n + 1?

Answer 1

Debe habilitar la carga ansiosa de las traducciones en el modelo. forma recomendada de hacer esto es:

class Category < ActiveRecord::Base 
    has_many :posts 
    translates :name # globalize3 

    default_scope includes(:translations) 
end 

Answer 2

Carriles 4: Tomando la respuesta de Michał Szajbe esto todavía funciona con una ligera modificación:

class Category < ActiveRecord::Base 
    has_many :posts 
    translates :name 

    default_scope { includes(:translations) } 
end