橋立様

曽原です。
ご教授ありがとうございます。

＞created_atがproductsテーブルか、makersテーブルのどちらのものか判断できないため、
発生しているエラーだと思います。
ご指摘ありがとうございます。

＞Productクラスの定義等で、
デフォルトのORDER句等を指定していませんか?
ORDER句が定義されている箇所を、products.created_atと修正

このORDER句は通常どのファイルに書いてあるものでしょうか？
特別に触ってはいません。
お手数ですが、ファイル名や手順を教えていただければ幸いです^^;


曽原


2011年8月15日23:35 Tomohiro Hashidate <kakyoin.hierophant@g...>:

> 曽原さん
>
> 横から失礼します。
> 橋立と申します。
>
> 前島さんが書かれたコードを実行した時に出力されたエラーは、
> 発行SQLの最後の ORDER BY created_at DESCという箇所で、
> created_atがproductsテーブルか、makersテーブルのどちらのものか判断できないため、
> 発生しているエラーだと思います。
> 検索条件として正しいのは、makers.maker_nameであるはずです。
>
> 何故SQL文に、ORDER BY created_at DESCが付いているのかは、
> ちょっと判断できませんが、Productクラスの定義等で、
> デフォルトのORDER句等を指定していませんか?
> ORDER句が定義されている箇所を、products.created_atと修正すれば、
> エラーは解消されると思います。
>
>
> --
> Tomohiro Hashidate
> Sent with Sparrow <http://www.sparrowmailapp.com>
> Sparrow <http://www.sparrowmailapp.com/?sig> を使って送信
>
> 日付：2011年8月15日月曜日、時刻：23:09、差出人：sohara：
>
>  前島様
>
> 曽原です。
>
> :include =>:makerだけでしたらエラーはでておりません。
>
>  @products =Product.find(:all,:include =>:maker, :conditions =>['code like
> :value or name like :value', {:value=> '%' +params[:search_form]+ '%'}])
>
>
> DB定義はschema,rbのデータでよろしいのでしょうか？
>
> どうぞよろしくお願い致します。
>
> ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
>
> schema,rb
>
>   create_table "products", :force => true do |t|
>
>    t.string   "name"
>
>     t.integer  "price"
>
>     t.datetime "created_at"
>
>     t.datetime "updated_at"
>
>     t.string   "code"
>
>     t.integer  "cost"
>
>     t.integer  "quantity"
>
>     t.integer  "maker_id"
>
>     t.integer  "cloth_id"
>
>     t.integer  "category_id"
>
>   end
>
>   create_table "makers", :force => true do |t|
>
>     t.string   "maker_name"
>
>     t.datetime "created_at"
>
>     t.datetime "updated_at"
>
>   end
>
> ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
>
> 試した時のログです。
>
> @products =Product.find(:all,:include =>:maker, :conditions =>['code like
> :value or name like :value', {:value=> '%' +params[:search_form]+ '%'}])
>
>  Started GET
> "/products/search?utf8=%E2%9C%93&search_form=%E3%82%A2%E3%82%AB%E3%82%BB&commit=%E5%95%86%E5%93%81%E6%A4%9C%E7%B4%A2"
> for 127.0.0.1 at 2011-08-15 22:58:36 +0900
>
>   Processing by ProductsController#search as HTML
>
>   Parameters: {"utf8"=>"", "search_form"=>"アカセ", "commit"=>"商品検索"}
>
>   Product Load (0.3ms)  SELECT "products".* FROM "products" WHERE (code
> like '%アカセ%' or name like '%アカセ%') ORDER BY created_at DESC
>
> Rendered shared/_header.rhtml (0.9ms)
>
>   Maker Load (0.3ms)  SELECT "makers".* FROM "makers"
>
>   Category Load (1.7ms)  SELECT "categories".* FROM "categories"
>
> Rendered shared/_left.rhtml (96.8ms)
>
> Rendered shared/_footer.rhtml (0.4ms)
>
> Rendered products/index.html.erb within layouts/application (105.6ms)
>
> Completed 200 OK in 113ms (Views: 109.7ms | ActiveRecord: 3.3ms)
> ＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊
>
> makersのコードで試した時のログです。
>
> @products =Product.find(:all,:include =>:maker, :conditions =>['makers.maker_name
> like :value or code like :value or name like :value', {:value=> '%'+params[
> :search_form]+ '%'}])
>
>
> Started GET
> "/products/search?utf8=%E2%9C%93&search_form=%E3%82%A2%E3%82%AB%E3%82%BB&commit=%E5%95%86%E5%93%81%E6%A4%9C%E7%B4%A2"
> for 127.0.0.1 at 2011-08-15 23:04:57 +0900
>   Processing by ProductsController#search as HTML
>   Parameters: {"utf8"=>"", "search_form"=>"アカセ", "commit"=>"商品検索"}
>   Product Load (0.3ms)  SELECT "products"."id" AS t0_r0, "products"."name"
> AS t0_r1, "products"."price" AS t0_r2, "products"."created_at" AS t0_r3,
> "products"."updated_at" AS t0_r4, "products"."code" AS t0_r5,
> "products"."cost" AS t0_r6, "products"."quantity" AS t0_r7,
> "products"."maker_id" AS t0_r8, "products"."cloth_id" AS t0_r9,
> "products"."category_id" AS t0_r10, "makers"."id" AS t1_r0,
> "makers"."maker_name" AS t1_r1, "makers"."created_at" AS t1_r2,
> "makers"."updated_at" AS t1_r3 FROM "products" LEFT OUTER JOIN "makers" ON
> "makers"."id" = "products"."maker_id" WHERE (makers.maker_name like '%アカセ%'
> or code like '%アカセ%' or name like '%アカセ%') ORDER BY created_at DESC
> SQLite3::SQLException: ambiguous column name: created_at: SELECT
> "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."price" AS
> t0_r2, "products"."created_at" AS t0_r3, "products"."updated_at" AS t0_r4,
> "products"."code" AS t0_r5, "products"."cost" AS t0_r6,
> "products"."quantity" AS t0_r7, "products"."maker_id" AS t0_r8,
> "products"."cloth_id" AS t0_r9, "products"."category_id" AS t0_r10,
> "makers"."id" AS t1_r0, "makers"."maker_name" AS t1_r1,
> "makers"."created_at" AS t1_r2, "makers"."updated_at" AS t1_r3 FROM
> "products" LEFT OUTER JOIN "makers" ON "makers"."id" = "products"."maker_id"
> WHERE (makers.maker_name like '%アカセ%' or code like '%アカセ%' or name like
> '%アカセ%') ORDER BY created_at DESC
> Completed   in 79ms
>
> ActiveRecord::StatementInvalid (SQLite3::SQLException: ambiguous column
> name: created_at: SELECT "products"."id" AS t0_r0, "products"."name" AS
> t0_r1, "products"."price" AS t0_r2, "products"."created_at" AS t0_r3,
> "products"."updated_at" AS t0_r4, "products"."code" AS t0_r5,
> "products"."cost" AS t0_r6, "products"."quantity" AS t0_r7,
> "products"."maker_id" AS t0_r8, "products"."cloth_id" AS t0_r9,
> "products"."category_id" AS t0_r10, "makers"."id" AS t1_r0,
> "makers"."maker_name" AS t1_r1, "makers"."created_at" AS t1_r2,
> "makers"."updated_at" AS t1_r3 FROM "products" LEFT OUTER JOIN "makers" ON
> "makers"."id" = "products"."maker_id" WHERE (makers.maker_name like '%アカセ%'
> or code like '%アカセ%' or name like '%アカセ%') ORDER BY created_at DESC):
>   app/controllers/products_controller.rb:24:in `search'
>
> Rendered
> .bundle/ruby/1.9.1/gems/actionpack-3.0.4/lib/action_dispatch/middleware/templates/rescues/_trace.erb
> (1.1ms)
> Rendered
> .bundle/ruby/1.9.1/gems/actionpack-3.0.4/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
> (4.7ms)
> Rendered
> .bundle/ruby/1.9.1/gems/actionpack-3.0.4/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
> within rescues/layout (9.4ms)
>
>
>
> 2011年8月15日22:54 前島真一 <netwillnet@g...>:
>
> 前島です。
>
> "maker"だとエラーは出ないですか？
> あと、Product, Maker それぞれのDB定義(db/migration 配下の各ファイル) を見せてもらえますか？
>
> 2011年8月15日22:35 sohara <gggsjp2@g...>:
> > 前島様
> > ありがとうございます。
> > maksesでやってみましたが、エラーが表示されました^^;
> > どこか他にご指摘がございましたら、ご教授くださいませ。
> >  @products =Product.find(:all,:include =>:maker, :conditions
> > =>['makers.maker_name like :value or code like :value or name like
> :value',
> > {:value=> '%' +params[:search_form]+ '%'}])
> >
> > ActiveRecord::StatementInvalid in ProductsController
> >
> > SQLite3::SQLException: ambiguous column name: created_at: SELECT
> > "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."price"
> AS
> > t0_r2, "products"."created_at" AS t0_r3, "products"."updated_at" ・・・
> >
> > 曽原
> > gggsjp2@g...
> >
> >
>
>
>
> --
> 前島 真一(@netwillnet)
> http://www.willnet.in/
> http://d.hatena.ne.jp/willnet/
>
> --
> ML: rails@r...
> 使い方: http://QuickML.com/
>
>
>
>