关联模型和带有验证的嵌套表单不起作用
Associated models and a nested form with validation not working
Update2: 我清理了代码,似乎解决了一些问题。我已经 post 将新代码编辑为一个新问题 here。
更新: 组织和用户有 1:many 关系。我的问题涉及一个联合注册表单,其中需要组织和用户。在 maxcal 对原始 post 的帮助之后,我为我的嵌套表单 ("organization has many users") 编写了一个新的 create
方法,如下所示。我还添加了 begin...rescue...end
到 create
方法。 situation/problem现在:
- 已提交所有有效信息,它可以正常工作。
- 提交的组织信息无效(无论用户是否也无效),它会按照我们的意愿呈现包含错误消息的页面,但它仅显示组织详细信息的错误。此外,对于用户详细信息,它随后清空了所有不应清空的字段。
- 只为用户提交了无效信息,它再次呈现表单但没有任何错误消息,并且用户的所有字段都已清空。
有人知道代码有什么问题吗?嵌套用户的问题似乎比组织(父级)更多。此外,users_attributes.empty?
不起作用,因为根据日志,提交的空表单仍然包含此类属性:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"***", "organization"=>{"name"=>"", "bag"=>"", "users_attributes"=>{"0"=>{"email"=>"", "username"=>"", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "usertype"=>"2", "admin"=>"true"}}}, "commit"=>"Register"}
.
def create
@organization = Organization.new(new_params.except(:users_attributes))
begin
if users_attributes.empty?
@organisation.errors.add(:users, 'No user provided')
end
@organization.transaction do
@organization.save!
if users_attributes.any?
@organization.users.create!(users_attributes)
end
end
rescue ActiveRecord::RecordInvalid => invalid
if @organization.persisted?
if @organization.users.any?
@organization.users.each do |single_user|
single_user.send_activation_email
end
end
flash[:success] = "Confirmation email sent."
redirect_to root_url
else
@organization.users.build if @organization.users.blank?
render :new
end
end
end
private
# converts the hash of nested attributes hashes to an array
def users_attributes
new_params[:users_attributes].values
end
end
原题:
我有两个关联模型和一个带验证的嵌套表单。不幸的是,它不起作用。 1) 在 seeding 上它生成错误 Validation failed: Users organization can't be blank
。我 对此提出了一个问题,并过早地断定它已经解决了。它没有。 2) 提交我的嵌套 注册表单 并正确填写所有字段,会生成闪现错误消息 The form contains 1 error. Users organization can't be blank
.
我应该如何调整我的代码来解决这些问题?
模型文件:
#User model
belongs_to :organization, inverse_of: :users
validates_presence_of :organization_id, :unless => 'usertype == 1'
# Organization model
has_many :users, dependent: :destroy
accepts_nested_attributes_for :users, :reject_if => :all_blank, :allow_destroy => true
validate :check_user
private
def check_user
if users.empty?
errors.add(:base, 'User not present')
end
end
组织控制器方法
def new
@organization = Organization.new
@user = @organization.users.build
end
def create
@organization = Organization.new(new_params)
if @organization.save
@organization.users.each do |single_user|
single_user.send_activation_email # Method in user model file.
end
flash[:success] = "Confirmation email sent."
redirect_to root_url
else
@organization.users.build if @organization.users.blank?
render 'new'
end
end
def new_params
params.require(:organization).permit(:name, :bag,
users_attributes: [:email, :username, :usertype, :password, :password_confirmation])
end
表格:
<%= form_for @organization, url: organizations_path do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.text_field :name %>
<%= f.text_field :bag %>
<%= f.fields_for :users do |p| %>
<%= p.email_field :email %>
<%= p.text_field :username %>
<%= p.text_field :fullname %>
<%= p.password_field :password %>
<%= p.password_field :password_confirmation %>
<%= p.hidden_field :usertype, value: 2 %>
<% end %>
在我的种子文件中我有:
Organization.create!(name: "Fictious business",
address: Faker::Address.street_address,
city: Faker::Address.city,
users_attributes: [email: "helpst@example.com",
username: "helpyzghtst",
usertype: 2,
password: "foobar",
password_confirmation: "foobar"])
提交注册表单错误的日志:
Started POST "/organizations"
Processing by OrganizationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"0cR***Nnx4iReMiePg==", "organization"=>{"name"=>"test21", "bag"=>"tes21", "users_attributes"=>{"0"=>{"email"=>"test21@example.com", "username"=>"test21", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "usertype"=>"2"}}}, "commit"=>"Register"}
(0.2ms) BEGIN
User Exists (1.1ms) SELECT 1 AS one FROM "users" WHERE LOWER("users"."email") = LOWER('test21@example.com') LIMIT 1
(0.7ms) SELECT "users"."email" FROM "users" ORDER BY "users"."username" ASC
User Exists (0.3ms) SELECT 1 AS one FROM "users" WHERE LOWER(users"."username") = LOWER('test21') LIMIT 1
Organization Exists (0.6ms) SELECT 1 AS one FROM "organizations" WHERE LOWER("organizations"."name") = LOWER('test21') LIMIT 1
Organization Exists (0.4ms) SELECT 1 AS one FROM "organizations" WHERE LOWER("organizations"."bag") = LOWER('tes21') LIMIT 1
(0.2ms) ROLLBACK
由于 Catch-22
,您的验证无效
To apply for this job, you would have to be insane; but if you are
insane, you are unacceptable.
ActiveRecord 模型在保存时从数据库中获取 ID。
但是在将组织插入数据库之前对嵌套用户进行验证。
您可能会猜想只要检查 validates_presence_of
就可以通过:
validates_presence_of :organization, unless: -> { usertype == 1 }
不幸的是没有。为了让 validates_presence_of :organization
通过,必须将组织持久保存到数据库中。又是第二十二条军规。
为了通过验证,我们需要将创建组织和用户分为两个步骤:
org = Organization.create(name: 'M & M Enterprises')
user = org.users.build(username: 'milo_minderbinder', ...)
user.valid?
不幸的是,您不能使用 accepts_nested_attributes_for :users
的方法 - 至少不能直接使用。
通过使用 transaction 我们可以将组织插入数据库并在用户无效时回滚。
def create
@organization = Organization.new(new_params.except(:users_attributes))
@organization.transaction do
@organization.save!
if new_params[:users_attributes].any?
@organization.users.create!(new_params[:users_attributes])
end
end
if @organization.persisted?
# ...
if @organization.users.any?
# send emails ...
end
else
@organization.users.build if @organization.users.blank?
render :new
end
end
跟进问题
我们使用 @organization.persisted?
因为我们可能希望重定向到新创建的组织,无论是否创建了用户记录。
because the emails are sent to users? It shouldn't matter since organization is rolled back if no user is created.
如果没有创建用户,事务不会回滚。仅当用户因参数无效而无法保存时。这是根据您的要求:
But an organization can also (temporarily) have no users.
如果您需要@organisation 在没有用户的情况下无效,您可以这样做:
@organisation.errors.add(:users, 'No users provided') unless new_params[:users_attributes].any?
@organization.transaction do
@organization.save!
if new_params[:users_attributes].any?
@organization.users.create!(new_params[:users_attributes])
end
end
您将使用 @organization.users.any?
检查是否有任何用户。 @organization.users.persisted?
将不起作用,因为 .persisted?
是模型实例的方法 - 而不是集合。
On a different note, I assume it's not possible to overwrite/update an existing organization/user with this method (which shouldn't be) instead of always creating a new record?
是的,因为这将始终发出两个 SQL 插入语句,所以它不会更改现有记录。
然而,由您创建验证以保证数据库列的唯一性(IE,您不希望多个记录具有相同的 user.email 或 organiation.name)。
有利的一面是 none 这些注意事项在更新现有组织时适用:
def update
@organisation.update(... params for org and and users ...)
end
因为在验证用户时您不会遇到鸡生蛋还是蛋生鸡的困境。
Update2: 我清理了代码,似乎解决了一些问题。我已经 post 将新代码编辑为一个新问题 here。
更新: 组织和用户有 1:many 关系。我的问题涉及一个联合注册表单,其中需要组织和用户。在 maxcal 对原始 post 的帮助之后,我为我的嵌套表单 ("organization has many users") 编写了一个新的 create
方法,如下所示。我还添加了 begin...rescue...end
到 create
方法。 situation/problem现在:
- 已提交所有有效信息,它可以正常工作。
- 提交的组织信息无效(无论用户是否也无效),它会按照我们的意愿呈现包含错误消息的页面,但它仅显示组织详细信息的错误。此外,对于用户详细信息,它随后清空了所有不应清空的字段。
- 只为用户提交了无效信息,它再次呈现表单但没有任何错误消息,并且用户的所有字段都已清空。
有人知道代码有什么问题吗?嵌套用户的问题似乎比组织(父级)更多。此外,users_attributes.empty?
不起作用,因为根据日志,提交的空表单仍然包含此类属性:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"***", "organization"=>{"name"=>"", "bag"=>"", "users_attributes"=>{"0"=>{"email"=>"", "username"=>"", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "usertype"=>"2", "admin"=>"true"}}}, "commit"=>"Register"}
.
def create
@organization = Organization.new(new_params.except(:users_attributes))
begin
if users_attributes.empty?
@organisation.errors.add(:users, 'No user provided')
end
@organization.transaction do
@organization.save!
if users_attributes.any?
@organization.users.create!(users_attributes)
end
end
rescue ActiveRecord::RecordInvalid => invalid
if @organization.persisted?
if @organization.users.any?
@organization.users.each do |single_user|
single_user.send_activation_email
end
end
flash[:success] = "Confirmation email sent."
redirect_to root_url
else
@organization.users.build if @organization.users.blank?
render :new
end
end
end
private
# converts the hash of nested attributes hashes to an array
def users_attributes
new_params[:users_attributes].values
end
end
原题:
我有两个关联模型和一个带验证的嵌套表单。不幸的是,它不起作用。 1) 在 seeding 上它生成错误 Validation failed: Users organization can't be blank
。我 The form contains 1 error. Users organization can't be blank
.
我应该如何调整我的代码来解决这些问题?
模型文件:
#User model
belongs_to :organization, inverse_of: :users
validates_presence_of :organization_id, :unless => 'usertype == 1'
# Organization model
has_many :users, dependent: :destroy
accepts_nested_attributes_for :users, :reject_if => :all_blank, :allow_destroy => true
validate :check_user
private
def check_user
if users.empty?
errors.add(:base, 'User not present')
end
end
组织控制器方法
def new
@organization = Organization.new
@user = @organization.users.build
end
def create
@organization = Organization.new(new_params)
if @organization.save
@organization.users.each do |single_user|
single_user.send_activation_email # Method in user model file.
end
flash[:success] = "Confirmation email sent."
redirect_to root_url
else
@organization.users.build if @organization.users.blank?
render 'new'
end
end
def new_params
params.require(:organization).permit(:name, :bag,
users_attributes: [:email, :username, :usertype, :password, :password_confirmation])
end
表格:
<%= form_for @organization, url: organizations_path do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.text_field :name %>
<%= f.text_field :bag %>
<%= f.fields_for :users do |p| %>
<%= p.email_field :email %>
<%= p.text_field :username %>
<%= p.text_field :fullname %>
<%= p.password_field :password %>
<%= p.password_field :password_confirmation %>
<%= p.hidden_field :usertype, value: 2 %>
<% end %>
在我的种子文件中我有:
Organization.create!(name: "Fictious business",
address: Faker::Address.street_address,
city: Faker::Address.city,
users_attributes: [email: "helpst@example.com",
username: "helpyzghtst",
usertype: 2,
password: "foobar",
password_confirmation: "foobar"])
提交注册表单错误的日志:
Started POST "/organizations"
Processing by OrganizationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"0cR***Nnx4iReMiePg==", "organization"=>{"name"=>"test21", "bag"=>"tes21", "users_attributes"=>{"0"=>{"email"=>"test21@example.com", "username"=>"test21", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "usertype"=>"2"}}}, "commit"=>"Register"}
(0.2ms) BEGIN
User Exists (1.1ms) SELECT 1 AS one FROM "users" WHERE LOWER("users"."email") = LOWER('test21@example.com') LIMIT 1
(0.7ms) SELECT "users"."email" FROM "users" ORDER BY "users"."username" ASC
User Exists (0.3ms) SELECT 1 AS one FROM "users" WHERE LOWER(users"."username") = LOWER('test21') LIMIT 1
Organization Exists (0.6ms) SELECT 1 AS one FROM "organizations" WHERE LOWER("organizations"."name") = LOWER('test21') LIMIT 1
Organization Exists (0.4ms) SELECT 1 AS one FROM "organizations" WHERE LOWER("organizations"."bag") = LOWER('tes21') LIMIT 1
(0.2ms) ROLLBACK
由于 Catch-22
,您的验证无效To apply for this job, you would have to be insane; but if you are insane, you are unacceptable.
ActiveRecord 模型在保存时从数据库中获取 ID。 但是在将组织插入数据库之前对嵌套用户进行验证。
您可能会猜想只要检查 validates_presence_of
就可以通过:
validates_presence_of :organization, unless: -> { usertype == 1 }
不幸的是没有。为了让 validates_presence_of :organization
通过,必须将组织持久保存到数据库中。又是第二十二条军规。
为了通过验证,我们需要将创建组织和用户分为两个步骤:
org = Organization.create(name: 'M & M Enterprises')
user = org.users.build(username: 'milo_minderbinder', ...)
user.valid?
不幸的是,您不能使用 accepts_nested_attributes_for :users
的方法 - 至少不能直接使用。
通过使用 transaction 我们可以将组织插入数据库并在用户无效时回滚。
def create
@organization = Organization.new(new_params.except(:users_attributes))
@organization.transaction do
@organization.save!
if new_params[:users_attributes].any?
@organization.users.create!(new_params[:users_attributes])
end
end
if @organization.persisted?
# ...
if @organization.users.any?
# send emails ...
end
else
@organization.users.build if @organization.users.blank?
render :new
end
end
跟进问题
我们使用 @organization.persisted?
因为我们可能希望重定向到新创建的组织,无论是否创建了用户记录。
because the emails are sent to users? It shouldn't matter since organization is rolled back if no user is created.
如果没有创建用户,事务不会回滚。仅当用户因参数无效而无法保存时。这是根据您的要求:
But an organization can also (temporarily) have no users.
如果您需要@organisation 在没有用户的情况下无效,您可以这样做:
@organisation.errors.add(:users, 'No users provided') unless new_params[:users_attributes].any?
@organization.transaction do
@organization.save!
if new_params[:users_attributes].any?
@organization.users.create!(new_params[:users_attributes])
end
end
您将使用 @organization.users.any?
检查是否有任何用户。 @organization.users.persisted?
将不起作用,因为 .persisted?
是模型实例的方法 - 而不是集合。
On a different note, I assume it's not possible to overwrite/update an existing organization/user with this method (which shouldn't be) instead of always creating a new record?
是的,因为这将始终发出两个 SQL 插入语句,所以它不会更改现有记录。
然而,由您创建验证以保证数据库列的唯一性(IE,您不希望多个记录具有相同的 user.email 或 organiation.name)。
有利的一面是 none 这些注意事项在更新现有组织时适用:
def update
@organisation.update(... params for org and and users ...)
end
因为在验证用户时您不会遇到鸡生蛋还是蛋生鸡的困境。