32 lines
1.2 KiB
Ruby
32 lines
1.2 KiB
Ruby
class UserStatus < ActiveRecord::Base
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attr_accessible :changesets_count, :user_id, :watchers_count
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belongs_to :user
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belongs_to :watchers
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belongs_to :changesets
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validates_presence_of :user_id
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validates_uniqueness_of :user_id
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scope :visible, lambda {|*args| nil }
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scope :teacher, -> {
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joins('LEFT JOIN users ON user_statuses.user_id=users.id').
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joins('LEFT JOIN user_extensions ON users.id=user_extensions.user_id').
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where('user_extensions.identity = ?', 0)
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}
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scope :student, -> {
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joins('LEFT JOIN users ON user_statuses.user_id=users.id').
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joins('LEFT JOIN user_extensions ON users.id=user_extensions.user_id').
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where('user_extensions.identity = ?', 1)
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}
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# 更新字段 watchers_count 加1 这里没有做用户是否存在的匹配
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# 负责这个表的聂同学 是在新建用户时就新建了该表的记录
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# 但是 如果超级用户删除其他用户的话会造成读取错误 这里是遗漏点
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# 删除用户时 此表创建人员未作相应删除动作
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def update_watchers_count(num)
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if self.watchers_count >= 0
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self.update_attribute(:watchers_count, self.watchers_count.to_i + num)
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end
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end
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end
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