新增：个人主页置顶功能

app/services/api/v1/users/home_top_settings/create_service.rb

@@ -0,0 +1,40 @@
+class Api::V1::Users::HomeTopSettings::CreateService < ApplicationService
+
+  include ActiveModel::Model 
+
+  attr_reader :user, :top_type, :top_id 
+  attr_accessor :home_top_setting, :home_top
+
+  validates :user, :top_type, :top_id, presence: true
+  validates :top_type, inclusion: {in: %w(Organization Project), message: '请输入正确的TopType'}
+
+  def initialize(user, params)
+    @user = user 
+    @top_type = params[:top_type]
+    @top_id = params[:top_id]
+  end
+
+  def call 
+    raise Error, errors.full_messages.join(",") unless valid? 
+    raise Error, "置顶对象不存在！" unless find_home_top
+    raise Error, "置顶对象已置顶！" if check_home_top_setting
+
+    begin
+      @home_top_setting = HomeTopSetting.new(user:user, top: @home_top)
+      @home_top_setting.save! 
+
+      return @home_top_setting.valid? ? @home_top_setting : nil
+    rescue 
+      raise Error, "服务器错误，请联系系统管理员！"
+      
+    end
+  end
+
+  def find_home_top
+    @home_top = @top_type.constantize.find_by_id(@top_id).presence
+  end
+
+  def check_home_top_setting
+    HomeTopSetting.exists?(user: @user, top: @home_top)
+  end
+end

app/services/api/v1/users/home_top_settings/delete_service.rb

@@ -0,0 +1,40 @@
+class Api::V1::Users::HomeTopSettings::DeleteService < ApplicationService
+
+  include ActiveModel::Model 
+
+  attr_reader :user, :top_type, :top_id 
+  attr_accessor :home_top_setting, :home_top
+
+  validates :user, :top_type, :top_id, presence: true
+  validates :top_type, inclusion: {in: %w(Organization Project), message: '请输入正确的TopType'}
+
+  def initialize(user, params)
+    @user = user 
+    @top_type = params[:top_type]
+    @top_id = params[:top_id]
+  end
+
+  def call 
+    raise Error, errors.full_messages.join(",") unless valid? 
+    raise Error, "置顶对象不存在！" unless find_home_top
+    raise Error, "置顶对象未置顶！" unless check_home_top_setting
+
+    begin
+      @home_top_setting = HomeTopSetting.find_by(user:user, top: @home_top)
+      @home_top_setting.destroy!
+
+      return true
+    rescue 
+      raise Error, "服务器错误，请联系系统管理员！"
+      
+    end
+  end
+
+  def find_home_top
+    @home_top = @top_type.constantize.find_by_id(@top_id).presence
+  end
+
+  def check_home_top_setting
+    HomeTopSetting.exists?(user: @user, top: @home_top)
+  end
+end