Ruby on rails 3 Can'；t mass在Rails 3应用程序中使用cocoon和simple_表单为嵌套表单分配受保护的属性

问题：

我在提交表格时收到一条错误消息，上面写着：

ActiveModel:：MassAssignmentSecurity:：许可记录控制器#创建时出错

无法批量分配受保护的属性：许可记录

我的设置：

我使用的是Rails 3.2.3，包括Cocoon 1.0.14和Simple_Form 2.0.2

视图：

我的

app/views/admission\u records/\u form.html.haml

看起来像：

= simple_form_for [@admission, @record] do |f|
  = f.simple_fields_for :vital_signs, @record.vital_signs.build do |vs|
    = render :partial => "vital_sign_fields", :locals => { :f => vs }
    = link_to_add_association "Add Vital Signs", f, :vital_signs
  = f.submit

.nested-fields
  = f.label :sbp
  = f.text_field :sbp
  ...
  = link_to_remove_association "Remove Vital Sign"

resources :patient_admissions do
  resources :admission_records
end

class PatientAdmission < ActiveRecord::Base
  has_many :admission_records, :dependent => :destroy
end

class AdmissionRecord < ActiveRecord::Base
  belongs_to :patient_admission
  has_many :vital_signs, :dependent => :destroy

  accepts_nested_attributes_for :vital_signs, :rejects_if => :all_blank, :allow_destroy => true
  attr_accessible :vital_signs_attributes
end

class VitalSign < ActiveRecord::Base
  belongs_to :admission_record
  attr_accessible # just fields that appear in the form
end

before_filter do
  @admission = PatientAdmission.find(params[:patient_admission_id])
end

def new
  @record = @admission.admission_records.build
end

def create
  @record = @admission.admission_records.build(params[:admission_record])
  @vital_sign = @record.vital_signs.build(params[:vital_signs])
  @vital_sign.save
  if @record.save
    # Flash success and redirect to the right place
  else
    # Flash error and render :new
  end
end

我的

app/views/admission\u records/\u vital\u sign\u fields.html.haml

看起来像：

= simple_form_for [@admission, @record] do |f|
  = f.simple_fields_for :vital_signs, @record.vital_signs.build do |vs|
    = render :partial => "vital_sign_fields", :locals => { :f => vs }
    = link_to_add_association "Add Vital Signs", f, :vital_signs
  = f.submit

.nested-fields
  = f.label :sbp
  = f.text_field :sbp
  ...
  = link_to_remove_association "Remove Vital Sign"

resources :patient_admissions do
  resources :admission_records
end

class PatientAdmission < ActiveRecord::Base
  has_many :admission_records, :dependent => :destroy
end

class AdmissionRecord < ActiveRecord::Base
  belongs_to :patient_admission
  has_many :vital_signs, :dependent => :destroy

  accepts_nested_attributes_for :vital_signs, :rejects_if => :all_blank, :allow_destroy => true
  attr_accessible :vital_signs_attributes
end

class VitalSign < ActiveRecord::Base
  belongs_to :admission_record
  attr_accessible # just fields that appear in the form
end

before_filter do
  @admission = PatientAdmission.find(params[:patient_admission_id])
end

def new
  @record = @admission.admission_records.build
end

def create
  @record = @admission.admission_records.build(params[:admission_record])
  @vital_sign = @record.vital_signs.build(params[:vital_signs])
  @vital_sign.save
  if @record.save
    # Flash success and redirect to the right place
  else
    # Flash error and render :new
  end
end

我基本上想做的是，我有一个名为AdmissionRecord的资源嵌套在另一个名为PatientAdmission的资源中（

route.rb

如下所示）。我还有另一个名为

VitalSign

的资源，我希望在创建

AdmissionRecord

我的

config/routes.rb

文件如下所示：

= simple_form_for [@admission, @record] do |f|
  = f.simple_fields_for :vital_signs, @record.vital_signs.build do |vs|
    = render :partial => "vital_sign_fields", :locals => { :f => vs }
    = link_to_add_association "Add Vital Signs", f, :vital_signs
  = f.submit

.nested-fields
  = f.label :sbp
  = f.text_field :sbp
  ...
  = link_to_remove_association "Remove Vital Sign"

resources :patient_admissions do
  resources :admission_records
end

class PatientAdmission < ActiveRecord::Base
  has_many :admission_records, :dependent => :destroy
end

class AdmissionRecord < ActiveRecord::Base
  belongs_to :patient_admission
  has_many :vital_signs, :dependent => :destroy

  accepts_nested_attributes_for :vital_signs, :rejects_if => :all_blank, :allow_destroy => true
  attr_accessible :vital_signs_attributes
end

class VitalSign < ActiveRecord::Base
  belongs_to :admission_record
  attr_accessible # just fields that appear in the form
end

before_filter do
  @admission = PatientAdmission.find(params[:patient_admission_id])
end

def new
  @record = @admission.admission_records.build
end

def create
  @record = @admission.admission_records.build(params[:admission_record])
  @vital_sign = @record.vital_signs.build(params[:vital_signs])
  @vital_sign.save
  if @record.save
    # Flash success and redirect to the right place
  else
    # Flash error and render :new
  end
end

型号：

我的

app/models/patient\u admission.rb

看起来像：

= simple_form_for [@admission, @record] do |f|
  = f.simple_fields_for :vital_signs, @record.vital_signs.build do |vs|
    = render :partial => "vital_sign_fields", :locals => { :f => vs }
    = link_to_add_association "Add Vital Signs", f, :vital_signs
  = f.submit

.nested-fields
  = f.label :sbp
  = f.text_field :sbp
  ...
  = link_to_remove_association "Remove Vital Sign"

resources :patient_admissions do
  resources :admission_records
end

class PatientAdmission < ActiveRecord::Base
  has_many :admission_records, :dependent => :destroy
end

class AdmissionRecord < ActiveRecord::Base
  belongs_to :patient_admission
  has_many :vital_signs, :dependent => :destroy

  accepts_nested_attributes_for :vital_signs, :rejects_if => :all_blank, :allow_destroy => true
  attr_accessible :vital_signs_attributes
end

class VitalSign < ActiveRecord::Base
  belongs_to :admission_record
  attr_accessible # just fields that appear in the form
end

before_filter do
  @admission = PatientAdmission.find(params[:patient_admission_id])
end

def new
  @record = @admission.admission_records.build
end

def create
  @record = @admission.admission_records.build(params[:admission_record])
  @vital_sign = @record.vital_signs.build(params[:vital_signs])
  @vital_sign.save
  if @record.save
    # Flash success and redirect to the right place
  else
    # Flash error and render :new
  end
end

我的

app/models/vital_sign.rb

看起来像：

= simple_form_for [@admission, @record] do |f|
  = f.simple_fields_for :vital_signs, @record.vital_signs.build do |vs|
    = render :partial => "vital_sign_fields", :locals => { :f => vs }
    = link_to_add_association "Add Vital Signs", f, :vital_signs
  = f.submit

.nested-fields
  = f.label :sbp
  = f.text_field :sbp
  ...
  = link_to_remove_association "Remove Vital Sign"

resources :patient_admissions do
  resources :admission_records
end

class PatientAdmission < ActiveRecord::Base
  has_many :admission_records, :dependent => :destroy
end

class AdmissionRecord < ActiveRecord::Base
  belongs_to :patient_admission
  has_many :vital_signs, :dependent => :destroy

  accepts_nested_attributes_for :vital_signs, :rejects_if => :all_blank, :allow_destroy => true
  attr_accessible :vital_signs_attributes
end

class VitalSign < ActiveRecord::Base
  belongs_to :admission_record
  attr_accessible # just fields that appear in the form
end

before_filter do
  @admission = PatientAdmission.find(params[:patient_admission_id])
end

def new
  @record = @admission.admission_records.build
end

def create
  @record = @admission.admission_records.build(params[:admission_record])
  @vital_sign = @record.vital_signs.build(params[:vital_signs])
  @vital_sign.save
  if @record.save
    # Flash success and redirect to the right place
  else
    # Flash error and render :new
  end
end

请求：

---

请帮我找出哪里出了问题。我在谷歌上搜索了几个小时，查看了演示应用程序的其他示例和源代码，如中的示例和源代码，但似乎仍然无法修复此错误。如果需要任何其他信息来调试此问题，请告诉我。谢谢

好的，我刚刚遇到了这个问题，通过在模型中输入一行代码来修复它

# patient_admission.rb
Class PatientAdmission < ActiveRecord::Base
  attr_accessible :admission_record_attributes

  accepts_nested_attributes_for :admission_record

  ...
end

#病人入院.rb
类PatientMission

---

以下是解决方案：）

您可以为该请求添加日志吗？在最新的Rails中，默认情况下所有属性都受到保护。因此，在编写

.build（params[：acmission\u record]）

时，应该将属性指定为可访问的。