add: projects create validate length

app/forms/projects/create_form.rb

@@ -2,11 +2,15 @@ class Projects::CreateForm < BaseForm
   REPOSITORY_NAME_REGEX = /^(?!_)(?!.*?_$)[a-zA-Z0-9_-]+$/ #只含有数字、字母、下划线不能以下划线开头和结尾
   attr_accessor :user_id, :name, :description, :repository_name, :project_category_id,
                 :project_language_id, :ignore_id, :license_id, :private, :owner
-
+  
   validates :user_id, :name, :description,:repository_name,
             :project_category_id, :project_language_id, presence: true
   validates :repository_name, format: { with: REPOSITORY_NAME_REGEX, multiline: true, message: "只能含有数字、字母、下划线且不能以下划线开头和结尾" }
 
+  validates :name, length: { maximum: 50 }
+  validates :repository_name, length: { maximum: 100 }
+  validates :description, length: { maximum: 200 }
+
   validate :check_ignore, :check_license, :check_owner, :check_max_repo_creation
   validate do
     check_project_category(project_category_id)