Question

我不清楚为什么在我的Rails应用程序中我的查询如此之大，例如我遇到这样的问题：

Recipe Load (4.0ms)  SELECT `recipes`.* FROM `recipes` WHERE (recipes.id > 394691) ORDER BY recipes.id LIMIT 500
 Ingredient Load (6.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394692)
 Step Load (1.7ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394692)
 Ingredient Load (0.6ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394693)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394693)
 Ingredient Load (0.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394694)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394694)
 Ingredient Load (0.4ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394695)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394695)
 Ingredient Load (0.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394696)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394696)
 Ingredient Load (0.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394697)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394697)
 Ingredient Load (0.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394698)
 Step Load (0.2ms)  SELECT `steps`.* FROM `steps` WHERE (`steps`.recipe_id = 394698)
 Ingredient Load (0.3ms)  SELECT `ingredients`.* FROM `ingredients` WHERE (`ingredients`.recipe_id = 394699)
[... goes on for like 20 more rows ...]

为什么会有这么多查询，我是否需要使用:include或其他什么，我只是不知道该去哪里。

Answer 1

是

看起来你可能想要

@recipe = Recipe.find(params[:id], :include => :ingredients))

Rails，activerecord，许多查询，（包括？）

1 个答案: