我有一个由以下模型组成的表格
员工.rb
class Employee < ActiveRecord::Base
attr_accessible :employee_number, :joining_date, :first_name, :middle_name, :last_name,
:gender, :job_title, :employee_department_id, :qualification, :experience_detail,
:experience_year, :experience_month, :status_description, :date_of_birth, :marital_status,
:children_count, :father_name, :mother_name, :husband_name, :blood_group, :nationality_id,
:home_address_line1, :home_address_line2, :home_city, :home_state, :home_pin_code,
:office_address_line1, :office_address_line2, :office_city, :office_state, :office_pin_code,
:office_phone1, :office_phone2, :mobile_phone, :home_phone, :email, :fax, :user_id,
:reporting_manager_id, :employee_grade_id, :office_country_id,
:home_country_id, :employee_category, :employee_position_id
belongs_to :employee_department
has_many :counselor_supervisors
belongs_to :employee_position
def to_label
full_name = first_name + " " + last_name
end
end
员工部门.rb
class EmployeeDepartment < ActiveRecord::Base
attr_accessible :code, :name
has_many :employees
has_many :employee_positions
has_many :counselor_supervisors
has_many :batch_leadership_supervisors
def to_label
name
end
end
辅导员主管.rb
class CounselorSupervisor < ActiveRecord::Base
attr_accessible :employee_id, :employee_department_id, :employee_position_id
belongs_to :employee
belongs_to :employee_department
has_many :batch_counselor_supervisors
def to_label
employee.to_label
end
end
BatchCounselorSupervisor.rb
class BatchCounselorSupervisor < ActiveRecord::Base
attr_accessible :counselor_supervisor_id , :employee_department_id , :counselor_batch_id,
:batch_counselor_advisors_attributes
has_many :batch_counselor_advisors
belongs_to :counselor_supervisor
belongs_to :employee_department
belongs_to :counselor_batch
accepts_nested_attributes_for :batch_counselor_advisors
end
Employee_position.rb
class EmployeePosition < ActiveRecord::Base
attr_accessible :position_title, :employee_department_id
has_many :employees
belongs_to :employee_department
def to_label
position_title
end
end
batch_counselor_supervisors/new.html.erb （与我的问题相关的表格的一部分）
<%= simple_form_for(@batch_counselor_supervisor) do |f| %>
<%= f.error_messages %>
<%= f.association :employee_department, as: :select %>
<%= f.input :counselor_supervisor_id , collection: EmployeeDepartment.all, as: :grouped_select, group_method: :counselor_supervisors %>
<% end %>
下拉列表如下所示：
如果我添加了属于第一个部门的员工，"Business Administration"表单将正确显示如下：
更新：添加后label_method: :to_label，我的表格变成了这样：
<%= simple_form_for(@batch_counselor_supervisor) do |f| %>
<%= f.error_messages %>
<%= f.association :employee_department, as: :select %>
<%= f.input :counselor_supervisor_id ,
collection: EmployeeDepartment.all, as: :grouped_select, group_method: :counselor_supervisors, label_method: :to_label %>
<% end %>
员工姓名显示正确，但部门名称仍无法正确显示，如下图所示：
是这个SQLite3问题吗？如果是 sqlite3 问题，我该怎么做才能解决这个问题。