add school and department api for option

app/controllers/departments_controller.rb

@@ -0,0 +1,11 @@
+class DepartmentsController < ApplicationController
+  def for_option
+    render_ok(departments: Department.cached_names_data(current_school))
+  end
+
+  private
+
+  def current_school
+    @_current_school ||= School.find(params[:id])
+  end
+end

app/controllers/schools_controller.rb

@@ -9,4 +9,8 @@ class SchoolsController < ApplicationController
 
     render_ok(school_names: schools.pluck(:name))
   end
+
+  def for_option
+    render_ok(schools: School.cached_names_data)
+  end
 end

app/models/department.rb

@@ -2,4 +2,26 @@ class Department < ApplicationRecord
   belongs_to :school
 
   has_many :department_members, dependent: :destroy
+
+  after_create_commit :reset_data_cache
+  after_update_commit :reset_data_cache
+
+  def self.cached_names_data(school)
+    Rails.cache.fetch(names_data_cache_key(school.id), expires_in: 7.days) do
+      school.departments.select(:id, :name).as_json
+    end
+  end
+
+  private
+
+  def reset_data_cache
+    # 清除部门名称缓存
+    if new_record? || name_previously_changed?
+      Rails.cache.delete(self.class.names_data_cache_key(school_id))
+    end
+  end
+
+  def self.names_data_cache_key(school_id)
+    "schools/#{school_id}/department_names_data"
+  end
 end

app/models/school.rb

@@ -1,4 +1,6 @@
 class School < ApplicationRecord
+  has_many :departments, dependent: :destroy
+
   has_many :shixun_schools, :dependent => :destroy
   has_many :shixuns, :through => :shixun_schools
 
@@ -8,6 +10,9 @@ class School < ApplicationRecord
   has_many :ec_major_schools, :dependent => :destroy
   has_many :ec_majors, :through => :ec_major_schools
 
+  after_create_commit :reset_data_cache
+  after_update_commit :reset_data_cache
+
   # 学校管理员
   def manager?(user)
     ec_school_users.exists?(user_id: user.id)
@@ -28,4 +33,23 @@ class School < ApplicationRecord
   def manage_permission?(user)
     manager?(user) || major_manager?(user) || course_manager?(user)
   end
+
+  def self.cached_names_data
+    Rails.cache.fetch(names_data_cache_key, expires_in: 7.days) do
+      School.select(:id, :name).as_json
+    end
+  end
+
+  private
+
+  def reset_data_cache
+    # 清除学校名称缓存
+    if new_record? || name_previously_changed?
+      Rails.cache.delete(self.class.names_data_cache_key)
+    end
+  end
+
+  def self.names_data_cache_key
+    'schools/names_data'
+  end
 end

config/routes.rb

@@ -576,9 +576,13 @@ Rails.application.routes.draw do
 
     resources :schools do
       member do
+        resources :departments, only: [] do
+          get :for_option, on: :collection
+        end
       end
       collection do
-        get "school_list"
+        get :school_list
+        get :for_option
       end
 
       scope module: :ecs do