Rails: ¿MetaSearch se rompe cuando se busca y se paginan?

Question

Tengo un conjunto de fotos de búsqueda, y quiero limitar los resultados de la página de índice a las que son públicas (es decir, no pertenecen a una colección privada, también conocida como. :collection_id=>nil).

Tengo el siguiente alcance en mi modelo:

scope :community, where(:collection_id => nil)

Tengo lo siguiente en mi controlador:

def index
  @search = Photo.community.search(params[:search])
  @photos = @search.page(params[:page]).per(20)
end

Estoy usando Kaminari para paginar los resultados.

Cuando busco fotos sin cable (es decir, es decir Photo.search(params[:search])) funciona bien. Sin embargo, cuando busco fotos usando este alcance, la paginación rompe la búsqueda. La primera página aparece correctamente, pero cuando voy a otra página no hay resultados. Para probar esto localmente, cambié la paginación a 1 por página y aún no importa lo que busque en cualquier página después de que la primera página no muestre resultados a pesar de que el paginador indica que hay muchas más páginas de resultados.

No tengo idea de cómo depurar y solucionar esto, y realmente usaría ayuda. Aquí está el SQL del registro de desarrollo:

Para una carga normal de la página de índice (sin búsqueda):

Started GET "/photos" for 127.0.0.1 at 2011-04-28 11:58:51 -0500
  Processing by PhotosController#index as HTML
  SQL (0.4ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'

  SQL (0.3ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'
  User Load (0.7ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
  Context Load (0.3ms)  SELECT "contexts".* FROM "contexts" ORDER BY "contexts"."display_order" ASC
  Focus Load (0.3ms)  SELECT "focus".* FROM "focus" ORDER BY "focus"."display_order" ASC
  LandUse Load (0.3ms)  SELECT "land_uses".* FROM "land_uses" ORDER BY "land_uses"."display_order" ASC
Rendered static/_help-context.html.haml (4.5ms)
Rendered static/_help-focus.html.haml (3.1ms)
Rendered photos/_search.html.haml (304.9ms)
  SQL (0.5ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL LIMIT 1 OFFSET 0
  Photo Load (1.0ms)  SELECT "photos".* FROM "photos" WHERE "photos"."collection_id" IS NULL LIMIT 1 OFFSET 0
  Attachment Load (0.2ms)  SELECT "attachments".* FROM "attachments" WHERE ("attachments".photo_id = 1)
  User Load (1.0ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1)
  Profile Load (1.7ms)  SELECT "profiles".* FROM "profiles" WHERE ("profiles".user_id = 1) LIMIT 1
  Context Load (0.2ms)  SELECT "contexts".* FROM "contexts" WHERE "contexts"."id" = 6 ORDER BY "contexts"."display_order" ASC LIMIT 1
  Focus Load (0.1ms)  SELECT "focus".* FROM "focus" WHERE "focus"."id" = 2 ORDER BY "focus"."display_order" ASC LIMIT 1
  LandUse Load (0.2ms)  SELECT * FROM "land_uses" INNER JOIN "land_uses_photos" ON "land_uses".id = "land_uses_photos".land_use_id WHERE ("land_uses_photos".photo_id = 1 ) ORDER BY "land_uses"."display_order" ASC
Rendered photos/_photo_tiles.html.haml (62.2ms)
  SQL (0.2ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL
Rendered shared/_feedback.html.haml (1.5ms)
  Role Load (0.5ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
  CACHE (0.0ms)  SELECT "profiles".* FROM "profiles" WHERE ("profiles".user_id = 1) LIMIT 1
  CACHE (0.0ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
Rendered shared/_menu.html.haml (177.6ms)
Rendered shared/_footer.html.haml (2.7ms)
Rendered photos/index.html.haml within layouts/application (897.1ms)
Completed 200 OK in 1158ms (Views: 912.2ms | ActiveRecord: 8.2ms)

Para la primera página de una búsqueda (funciona correctamente):

Started GET "/photos?utf8=%E2%9C%93&search%5Bcontext_id_in%5D%5B%5D=6&search%5Btagged_with%5D=&search%5Btext_contains%5D=&search%5Bnear%5D%5B%5D=&search%5Bnear%5D%5B%5D=100&commit=Search" for 127.0.0.1 at 2011-04-28 12:00:39 -0500
  Processing by PhotosController#index as HTML
  Parameters: {"utf8"=>"✓", "search"=>{"context_id_in"=>["6"], "tagged_with"=>"", "text_contains"=>"", "near"=>["", "100"]}, "commit"=>"Search"}
  SQL (0.4ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'

  SQL (0.3ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'
  User Load (0.6ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
  Context Load (0.4ms)  SELECT "contexts".* FROM "contexts" ORDER BY "contexts"."display_order" ASC
  Focus Load (0.3ms)  SELECT "focus".* FROM "focus" ORDER BY "focus"."display_order" ASC
  LandUse Load (0.4ms)  SELECT "land_uses".* FROM "land_uses" ORDER BY "land_uses"."display_order" ASC
Rendered static/_help-context.html.haml (4.6ms)
Rendered static/_help-focus.html.haml (3.1ms)
Rendered photos/_search.html.haml (161.0ms)
  SQL (0.4ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL AND "photos"."context_id" IN (6) LIMIT 1 OFFSET 0
  Photo Load (0.7ms)  SELECT "photos".* FROM "photos" WHERE "photos"."collection_id" IS NULL AND "photos"."context_id" IN (6) LIMIT 1 OFFSET 0
  Attachment Load (0.2ms)  SELECT "attachments".* FROM "attachments" WHERE ("attachments".photo_id = 1)
  User Load (0.9ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1)
  Profile Load (1.9ms)  SELECT "profiles".* FROM "profiles" WHERE ("profiles".user_id = 1) LIMIT 1
  Context Load (0.2ms)  SELECT "contexts".* FROM "contexts" WHERE "contexts"."id" = 6 ORDER BY "contexts"."display_order" ASC LIMIT 1
  Focus Load (0.2ms)  SELECT "focus".* FROM "focus" WHERE "focus"."id" = 2 ORDER BY "focus"."display_order" ASC LIMIT 1
  LandUse Load (0.2ms)  SELECT * FROM "land_uses" INNER JOIN "land_uses_photos" ON "land_uses".id = "land_uses_photos".land_use_id WHERE ("land_uses_photos".photo_id = 1 ) ORDER BY "land_uses"."display_order" ASC
Rendered photos/_photo_tiles.html.haml (204.2ms)
  SQL (0.3ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL AND "photos"."context_id" IN (6)
Rendered shared/_feedback.html.haml (1.3ms)
  Role Load (0.4ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
  CACHE (0.0ms)  SELECT "profiles".* FROM "profiles" WHERE ("profiles".user_id = 1) LIMIT 1
  CACHE (0.0ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
Rendered shared/_menu.html.haml (35.5ms)
Rendered shared/_footer.html.haml (2.9ms)
Rendered photos/index.html.haml within layouts/application (729.3ms)
Completed 200 OK in 990ms (Views: 728.5ms | ActiveRecord: 7.7ms)

Para la segunda página de una búsqueda (no muestra resultados a pesar de que existen):

Started GET "/photos?commit=Search&page=2&search[context_id_in][]=6&search[near][]=&search[near][]=100&search[tagged_with]=&search[text_contains]=&utf8=%E2%9C%93" for 127.0.0.1 at 2011-04-28 12:01:33 -0500
  Processing by PhotosController#index as HTML
  Parameters: {"commit"=>"Search", "page"=>"2", "search"=>{"context_id_in"=>["6"], "near"=>["", "100"], "tagged_with"=>"", "text_contains"=>""}, "utf8"=>"✓"}
  SQL (0.4ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'

  SQL (0.3ms)   SELECT name
 FROM sqlite_master
 WHERE type = 'table' AND NOT name = 'sqlite_sequence'
  User Load (0.7ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
  Context Load (0.3ms)  SELECT "contexts".* FROM "contexts" ORDER BY "contexts"."display_order" ASC
  Focus Load (0.3ms)  SELECT "focus".* FROM "focus" ORDER BY "focus"."display_order" ASC
  LandUse Load (0.3ms)  SELECT "land_uses".* FROM "land_uses" ORDER BY "land_uses"."display_order" ASC
Rendered static/_help-context.html.haml (4.9ms)
Rendered static/_help-focus.html.haml (3.4ms)
Rendered photos/_search.html.haml (307.8ms)
  SQL (0.3ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL AND "photos"."context_id" IN (6) LIMIT 1 OFFSET 1
  SQL (0.3ms)  SELECT COUNT(DISTINCT "photos"."id") FROM "photos" LEFT OUTER JOIN "attachments" ON "attachments"."photo_id" = "photos"."id" LEFT OUTER JOIN "collections" ON "collections"."id" = "photos"."collection_id" WHERE "photos"."collection_id" IS NULL AND "photos"."context_id" IN (6)
Rendered shared/_feedback.html.haml (1.5ms)
  Role Load (0.4ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
  Profile Load (1.6ms)  SELECT "profiles".* FROM "profiles" WHERE ("profiles".user_id = 1) LIMIT 1
  CACHE (0.0ms)  SELECT "roles".* FROM "roles" INNER JOIN "roles_users" ON "roles".id = "roles_users".role_id WHERE "roles"."name" = 'admin' AND ("roles_users".user_id = 1 ) LIMIT 1
Rendered shared/_menu.html.haml (209.5ms)
Rendered shared/_footer.html.haml (2.7ms)
Rendered photos/index.html.haml within layouts/application (822.3ms)
Completed 200 OK in 934ms (Views: 823.7ms | ActiveRecord: 5.1ms)

Nuevamente tenga en cuenta que en los registros anteriores he establecido la paginación en 1 por página para que pueda ver si el paginador muestra el número correcto de resultados, y lo es. Por ejemplo, si busco algo, sé que hay 3 coincidencias en una por página, el paginador dice que hay tres páginas de resultados, sin embargo, las páginas 2 y 3 están en blanco.

Estoy completamente perplejo, cualquier ayuda sería muy apreciada.

Answer 1

Intente agregar su alcance como método de búsqueda.

class Photo < ActiveRecord::Base
  scope :community, where(:collection_id => nil)
  search_methods :community
end

class PhotosController < ActiveRecord::Base
  def index
    params[:search][:community] => true
    @search = Photo.search(params[:search])
    @photos = @search.page(params[:page]).per(20)
  end
end

No uso Kaminari, así que no puedo decirlo con certeza, pero sé que los documentos de Metasearch dicen que usa Search_methods para usar ámbitos en las búsquedas.

Answer 2

Funciona para mí con las últimas gemas actuales (Meta_Search 1.0.4, Kaminari 0.12.4).

Como autor de Kaminari Gem, supongo que algunas versiones más antiguas de Kaminari posiblemente no funcionan con Meta_Search. De hecho, solucioné varios errores que pueden causar este tipo de problema.

Entonces, ¿puedes actualizar tu gema Kaminari e intentarlo de nuevo?