实训报错

app/models/shixun.rb

@@ -53,7 +53,6 @@ class Shixun < ActiveRecord::Base
   has_many :tag_repertoires, :through => :shixun_tag_repertoires
   has_many :shixun_tag_repertoires, :dependent => :destroy
   has_many :shixun_service_configs, :dependent => :destroy
-  has_one :shixun_info, :dependent => :destroy
 
   scope :visible, lambda{where(status: [2,3])}
   scope :min, lambda { select([:id, :name, :gpid, :modify_time, :reset_time, :language, :status, :identifier,
@@ -67,18 +66,6 @@ class Shixun < ActiveRecord::Base
   #scope :visible, -> { where(status: -1) }
   after_create :send_tiding
 
-  def description
-    self.has_attribute?(:description) ? self[:description] : ""
-  end
-
-  def propaedeutics
-    self.has_attribute?(:propaedeutics) ? self[:propaedeutics] : ""
-  end
-
-  def evaluate_script
-    self.has_attribute?(:evaluate_script) ?  self[:evaluate_script] : ""
-  end
-
   def should_compile?
     self.mirror_repositories.published_main_mirror.first.try(:should_compile)
   end

app/models/shixun_info.rb

@@ -1,4 +0,0 @@
-class ShixunInfo < ActiveRecord::Base
-  # attr_accessible :title, :body
-  belongs_to :shixun
-end

db/migrate/20190705061233_add_evaluate_script_and_description_for_shixuns.rb

@@ -1,17 +0,0 @@
-class AddEvaluateScriptAndDescriptionForShixuns < ActiveRecord::Migration
-  def up
-    add_column :shixuns, :evaluate_script, :text
-    add_column :shixuns, :description, :text
-    add_column :shixuns, :propaedeutics, :text
-
-    shixuns = Shixun.where(nil).unscoped
-    shixuns.find_each do |shixun|
-      shixun.update_attributes(evaluate_script: shixun.shixun_info.try(:evaluate_script),
-                               description: shixun.shixun_info.try(:description),
-                               propaedeutics: shixun.shixun_info.try(:description))
-    end
-  end
-
-  def down
-  end
-end