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class Micropost < ActiveRecord::Base | |
before_save { } | |
belongs_to :user | |
default_scope -> { order('created_at DESC') } | |
validates :content, presence: true, length: { maximum: 140 } | |
validates :user_id, presence: true | |
# Returns microposts from the users being followed by the given user. | |
def self.from_users_followed_by(user) | |
followed_user_ids = "SELECT followed_id FROM relationships | |
WHERE follower_id = :user_id" | |
where("user_id IN (#{followed_user_ids}) OR user_id = :user_id", | |
user_id: user.id) | |
end | |
end |