28

我刚刚加入has_many :through协会。我正在尝试通过一个表单实现为所有 3 个表（和关联表）Physician保存数据的能力。Patient

我的迁移：

class CreatePhysicians < ActiveRecord::Migration
  def self.up
    create_table :physicians do |t|
      t.string :name
      t.timestamps
    end
  end
end

class CreatePatients < ActiveRecord::Migration
  def self.up
    create_table :patients do |t|
      t.string :name
      t.timestamps
    end
  end
end

class CreateAppointments < ActiveRecord::Migration
  def self.up
    create_table :appointments do |t|
      t.integer :physician_id
      t.integer :patient_id
      t.date :appointment_date
      t.timestamps
    end
  end
end

我的模型：

class Patient < ActiveRecord::Base
  has_many :appointments
  has_many :physicians, :through => :appointments
  accepts_nested_attributes_for :appointments
  accepts_nested_attributes_for :physicians
end
class Physician < ActiveRecord::Base
  has_many :appointments
  has_many :patients, :through => :appointments
  accepts_nested_attributes_for :patients
  accepts_nested_attributes_for :appointments
end
class Appointment < ActiveRecord::Base
  belongs_to :physician
  belongs_to :patient
end

我的控制器：

def new
    @patient = Patient.new
    @patient.physicians.build
    @patient.appointments.build
end

我的观点（new.html.rb）：

<% form_for(@patient) do |patient_form| %>
  <%= patient_form.error_messages %>
  <p>
    <%= patient_form.label :name, "Patient Name" %>
    <%= patient_form.text_field :name %>
  </p>
  <%  patient_form.fields_for :physicians do |physician_form| %>
    <p>
      <%= physician_form.label :name, "Physician Name" %>
      <%= physician_form.text_field :name %>
    </p>
 <% end %>

  <p>
    <%= patient_form.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', patients_path %>

我可以为 an 创建一个新Patient的Physician和关联的记录Appointment，但现在我想appointment_date在表单中也有字段。我应该在哪里放置Appointments 的字段以及在我的控制器中需要进行哪些更改？我尝试了谷歌搜索并尝试了这个，但在实现它时遇到了一些或其他错误。

4

3 回答 3

29

好的，这个问题的小问题困扰了我几个小时，所以我将在这里发布我的工作解决方案，希望它可以节省一些时间。这适用于 Rails 4.0 和 Ruby 2.0。这也克服了我遇到的“符号到整数转换”问题。

楷模：

class Patient < ActiveRecord::Base 
  has_many :appointments
  has_many :physicians, :through: :appointments
  accepts_nested_attributes_for :appointments
end 

class Appointment < ActiveRecord::Base
  belongs_to :physician 
  belongs_to :patient
  accepts_nested_attributes_for :physician
end

class Physicians < ActiveRecord::Base
  has_many :appointments
  has_many :patients, through: :appointments
end

控制器：

def new
  @patient= Patient.new 
  @appointments = @patient.appointments.build
  @physician = @appointments.build_physician 
end

def create
  Patient.new(patient_params)
end


def patient_params
   params.require(:patient).permit(:id, appointments_attributes: [:id, :appointment_time, physician_attributes: [:id ] )
end

看法

<% form_for(@patient) do |patient_form| %>
  <%= patient_form.error_messages %>
  <p>
    <%= patient_form.label :name, "Patient Name" %>
    <%= patient_form.text_field :name %>
  </p>

  <% patient_form.fields_for :appointments do |appointment_form| %>
    <p>
      <%= appointment_form.label :appointment_date, "Appointment Date" %>
      <%= appointment_form.date_field :appointment_date %>
    </p>

    <% appointment_form.fields_for :physician do |physician_form| %>
      <p>
        <%= physician_form.label :name, "Physician Name" %>
        <%= physician_form.text_field :name %>
      </p>
    <% end %>
  <% end %>

  <p>
    <%= patient_form.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', patients_path %>
于 2014-01-11T08:35:57.313 回答
7

“我得到了它的工作。我只是改变了模型如下”：在上面的评论中引用了 Shruti

class Patient < ActiveRecord::Base 
  has_many :appointments, :dependent => :destroy 
  has_many :physicians, :through => :appointments
  accepts_nested_attributes_for :appointments
end 

class Appointment < ActiveRecord::Base
  belongs_to :physician 
  belongs_to :patient
  accepts_nested_attributes_for :physician
end
于 2013-07-02T20:45:31.440 回答
4

您的患者类接受医生和预约的嵌套属性。尝试添加另fields_for一种预约方式。

<% form_for(@patient) do |patient_form| %>
  <%= patient_form.error_messages %>
  <p>
    <%= patient_form.label :name, "Patient Name" %>
    <%= patient_form.text_field :name %>
  </p>

  <% patient_form.fields_for :physicians do |physician_form| %>
    <p>
      <%= physician_form.label :name, "Physician Name" %>
      <%= physician_form.text_field :name %>
    </p>
  <% end %>

  <% patient_form.fields_for :appointments do |appointment_form| %>
    <p>
      <%= appointment_form.label :appointment_date, "Appointment Date" %>
      <%= appointment_form.date_field :appointment_date %>
    </p>
  <% end %>

  <p>
    <%= patient_form.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', patients_path %>
于 2012-11-22T06:52:31.217 回答