Question

模特：基于rails 3 guide！

class Physician < ActiveRecord::Base
  has_many :physician_specialities
  has_many :specialities, :through => :physician_specialities
end

class speciality < ActiveRecord::Base
  has_many :physician_specialities
  has_many :physicians, :through => :physician_specialities
end

class PhycianSpeciality < ActiveRecord::Base
  belongs_to :physician
  belongs_to :patient
end

数据库架构如下所示：

Physician
  id
  name
Speciality
  id
  name
PhycianSpeciality
  id
  physician_id
  speciality_id
  description

我想要一个能够为医生添加专业的表格，并写一个关于这个专业的小描述（根据医生的说法）。

我想我可以使用像Quick Tip: has_many :through => checkboxes这样的东西！

<% form_for @physician do -%>
  <% Speciality.all.each do |group| -%>
    <div>
      <%= check_box_tag :speciality_ids, speciality.id, @user.specialities.include?(speciality), :name => 'user[speciality_ids][]' -%>
      <%= label_tag :speciality_ids, speciality.name -%>
    </div>
  <% end -%>
  <%= submit_tag -%>
<% end -%>

但我不知道在哪里可以提供专业描述......

Answer 1

在我看来，你至少缺少两个关系表/模型。

SpecialtyDescription
PhysicianSpecialityDescription

通过这种方式，您可以在PhysicianSpeciality＆amp; PhysicianSpecialityDescription（PhysicianSpeciality_id，SpecialtyDescription_id）＆amp; SpecialtyDescription。

Answer 2

由于描述正在等待在PhysicianSpecialty中创建连接记录，所以我只是将描述作为text_area传递并在医生保存之前对其进行排序。

physicians_controller.rb

# i imagine ur update method would look kinda like this
def update
  @physician = Physician.find(params[:id])
  if @physician.update_attributes(params[:physician])
    physician_specialty = PhysicianSpecialty.find_by_specialty_id(:specialty_id => specialty.id)
    physician_specialty.update_attribute(:description, params[:description])
  else
    render :action => :edit
  end
end

has_many通过复选框驱动的表单

2 个答案: