ecs: modify student import api

app/controllers/ecs/students_controller.rb

@@ -14,7 +14,7 @@ class Ecs::StudentsController < Ecs::BaseController
   end
 
   def import
-    success_count = Ecs::ImportStudentService.call(current_year, params[:attachment_id])
+    success_count = Ecs::ImportStudentService.call(current_year, params)
     render_ok(success_count: success_count)
   rescue Ecs::ImportStudentService::Error => ex
     render_error(ex.message)

app/services/ecs/import_student_service.rb

@@ -1,18 +1,17 @@
 class Ecs::ImportStudentService < ApplicationService
   Error = Class.new(StandardError)
 
-  attr_reader :ec_year, :attachment
+  attr_reader :ec_year, :params
 
-  def initialize(ec_year, attachment_id)
-    @ec_year    = ec_year
-    @attachment = Attachment.find_by(id: attachment_id)
+  def initialize(ec_year, params)
+    @ec_year = ec_year
+    @params  = params
   end
 
   def call
-    raise Error, '文件不存在' if attachment.blank?
+    raise Error, '文件不存在' if params[:file].blank? || !params[:file].is_a?(ActionDispatch::Http::UploadedFile)
 
-    path = attachment.diskfile
-    excel = Ecs::ImportStudentExcel.new(path)
+    excel = Ecs::ImportStudentExcel.new(params[:file].to_path)
 
     success_count = 0
     EcYearStudent.bulk_insert(:student_id, :name, :created_at, :updated_at) do |worker|