ActiveRecord 在从 rails c 激活用户时出现新错误

支持
1

几个月前，我还可以通过以下方式创建用户：

sudo -s
cd /var/discourse
./launcher enter app
rails c
u = User.create(username: "dunderhead", email: "dunderhead@live.com", password: "password")
u.activate

现在，激活步骤失败，出现以下错误：

[7] pry(main)> u.activate
ActiveRecord::RecordNotSaved: You cannot call create unless the parent is saved
from /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/activerecord-7.0.8/lib/active_record
/associations/collection_association.rb:342:in `_create_record

我需要怎么做？

2

创建用户时，用户会获得用户 ID 吗？我猜不会，但我不知道为什么。

1 个赞
4

不。

[4] pry(main)> u = User.create(username: "dunderhead", email: "dunderhead@live.com", password: "password")
=> #<User:0x00007fb0c48b17e0
 id: nil,
 username: "dunderhead",
 created_at: nil,
 updated_at: nil,
 name: nil,
 seen_notification_id: 0,
 last_posted_at: nil,
 password_hash: nil,
 salt: nil,
 active: false,
 username_lower: nil,
 last_seen_at: nil,
 admin: false,
 last_emailed_at: nil,
 trust_level: 0,
 approved: false,
 approved_by_id: nil,
 approved_at: nil,
 previous_visit_at: nil,
 suspended_at: nil,
 suspended_till: nil,
 date_of_birth: nil,
 views: 0,
 flag_level: 0,
 ip_address: nil,
 moderator: false,
 title: nil,
 uploaded_avatar_id: nil,
 locale: nil,
 primary_group_id: nil,
 registration_ip_address: nil,
 staged: false,
 first_seen_at: nil,
 silenced_till: nil,
 group_locked_trust_level: nil,
 manual_locked_trust_level: nil,
 secure_identifier: nil,
 last_digest_at: nil,
 flair_group_id: nil,
 last_seen_reviewable_id: nil,
 password_algorithm: nil>

我尝试在激活用户之前保存用户，正如错误提示的那样，但没有成功。我不知道错误消息中的“父项”是什么意思。

[5] pry(main)> u.save
=> false
[6] pry(main)> u.activate
ActiveRecord::RecordNotSaved: You cannot call create unless the parent is saved
from /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/activerecord-7.0.8/lib/active_record/
associations/collection_association.rb:342:in `_create_record'
5

您在这里验证失败，原因如下：

例如，密码太短。

您可以通过执行以下操作来冒泡异常：

u.save!

例如，这会产生：

ActiveRecord::RecordInvalid: Validation failed: Password is too short (minimum is 10 characters)
from /home/robert/.rbenv/versions/3.2.2/lib/ruby/gems/3.2.0/gems/activerecord-7.0.8.1/lib/active_record/validations.rb:80:in `raise_validation_error'

在 create 后面加一个感叹号会更快地得到这个结果：

 u = User.create!(username: "dunderhead", email: "dunderhead@live.com", password: "password")

在您提供完全有效的属性（在创建时或修复后保存时）之前，不会分配 ID。

只有当您拥有一个实例化的对象时，才能在其上运行方法。

4 个赞
6

谢谢大家，密码太短了。现在一切都正常了。

1 个赞
7

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.