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修改《多字段唯一性判断》 

Signed-off-by: alan <547533434@qq.com>
This commit is contained in:
alan 2015-01-30 14:52:36 +08:00
parent 0d6261dfa7
commit a467736a5e
1 changed files with 2 additions and 8 deletions
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10
app/models/course_group.rb
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@ -12,8 +12,7 @@ class CourseGroup < ActiveRecord::Base
before_destroy :set_member_nil
attr_accessible :name
validates :name, :presence => true, :length => {:maximum => 20}
validate :unique_name_and_course
validates :name, :presence => true, :length => {:maximum => 20}, :uniqueness => { :scope => :course_id}
@ -22,10 +21,5 @@ class CourseGroup < ActiveRecord::Base
self.members.update_all("course_group_id = 0")
end
end
private
def unique_name_and_course
if CourseGroup.where("name=? and course_id=?", name, course_id).first
errors.add(:name, :groupname_repeat)
end
end
end