[英]Rails has_many :through nested form
我剛剛跳進了has_many :through
聯想。 我正在嘗試通過單一表單實現為所有3個表( Physician
, Patient
和關聯表)保存數據的功能。
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
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
def new
@patient = Patient.new
@patient.physicians.build
@patient.appointments.build
end
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 %>
我能夠創建一個新的Patient
, Physician
和相關記錄的Appointment
,但現在我想為外地appointment_date
太形式。 我應該在哪里放置Appointment
字段以及我的控制器需要進行哪些更改? 我嘗試谷歌搜索並嘗試了這一點 ,但陷入了實施它的一些或其他錯誤。
好吧,這個問題的小問題困擾了我幾個小時,所以我打算在這里發布我的工作解決方案,希望它能刮掉一些時間偷看。 這適用於Rails 4.0和Ruby 2.0。 這也克服了我的“符號到整數轉換”問題。
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
視圖
<% 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 %>
“我得到了它的工作。我只是按照以下方式更改了模型”:Shruti在上面的評論中引述
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
您的患者類接受醫生和約會的嵌套屬性。 嘗試添加另一個fields_for
方法進行約會。
<% 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 %>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.