我有一个让我头疼的问题。
在我的终端中,我看到 Trail 表已被查找。那张桌子上有一些虚拟的东西。
DEBUG - Account Load (0.4ms) SELECT "accounts".* FROM "accounts" WHERE "accounts"."id" = 1 LIMIT 1
DEBUG - Trail Load (0.2ms) SELECT "trails".* FROM "trails"
DEBUG - TEMPLATE (0.0004ms) /adventures/new
DEBUG - TEMPLATE (0.0002ms) /layouts/application
DEBUG - TEMPLATE (0.0004ms) /adventures/_form
DEBUG - TEMPLATE (0.0003ms) /base/_sidebar
DEBUG - GET (0.0644ms) /admin/adventures/new - 200 OK
我已经尝试并犯了很长时间的错误,现在这是使用与帕德里诺指南在他们的“accepts_nested_attributes_for”指南中建议的相同的设置。我仍然无法让表单显示在我的浏览器中进行编辑。
.../views/adventures/_form.haml
.group_trail
-f.fields_for :trails do |trail_form|
=trail_form.label :start
=trail_form.text_field :start
=trail_form.label :end
=trail_form.text_field :end
=trail_form.label :via
=trail_form.text_field :via
-unless trail_form.object.new_record?
=trail_form.check_box '_destroy'
=trail_form.label '_destroy', :caption => "Remove"
在 html 源代码中,呈现了 group_trail 但没有带有 in 的表单。
...
</div>
<div class='group_trail'>
</div>
<div class='group navform wat-cf'>
<input class="button" value="Save" type="submit" />
在我的模型中,我有:
class Adventure < ActiveRecord::Base
has_many :trails, :class_name => 'Adventure'
accepts_nested_attributes_for :trails, :allow_destroy => true
end
class Trail < ActiveRecord::Base
belongs_to :adventure
end
我的 trails 表中确实有一个 Adventure_id,但我现在已经恢复到更简单的尝试方法,因为据说这个 nested_attributes 关联不需要它。
如果我使用 trails 表中的 Adventure_id 运行它,就像它试图从 Adventure 表中选择 Adventure_id 一样。
DEBUG - Account Load (0.3ms) SELECT "accounts".* FROM "accounts" WHERE "accounts"."id" = 1 LIMIT 1
DEBUG - Trail Load (0.2ms) SELECT "trails".* FROM "trails"
DEBUG - Adventure Load (0.2ms) SELECT "adventures".* FROM "adventures" WHERE "adventures"."id" = ? LIMIT 1 [["id", "9"]]
DEBUG - TEMPLATE (0.0004ms) /adventures/edit
DEBUG - TEMPLATE (0.0002ms) /layouts/application
DEBUG - TEMPLATE (0.0003ms) /adventures/_form
DEBUG - Adventure Load (0.3ms) SELECT "adventures".* FROM "adventures" WHERE "adventures"."adventure_id" = 9
DEBUG - SQLite3::SQLException: no such column: adventures.adventure_id: SELECT "adventures".* FROM "adventures" WHERE "adventures"."adventure_id" = 9
ActiveRecord::StatementInvalid - SQLite3::SQLException: no such column: adventures.adventure_id: SELECT "adventures".* FROM "adventures" WHERE "adventures"."adventure_id" = 9:
有谁知道为什么它在冒险表而不是试验表中搜索 Adventure_id?
谁能指出我做错了什么?或者指出我正确的方向来解决这个问题?