socialforge/app/models/bid.rb

####by fq
=begin
bid一类多用，根据reward_type字段分类
reward_type == 1 企业众包需求
reward_type == 2 创新竞赛
reward_type == 3 课程中布置的作业

homework_type作业类型
homework_type == 1 文件提交
homework_type == 2 Project提交
=end
class Bid < ActiveRecord::Base
  Enterprise      = 1
  Contest         = 2
  Homework        = 3
  HomeworkFile    = 1
  HomeworkProject = 2
  attr_accessible :author_id, :budget, :deadline, :name, :description, :homework_type, :password
  include Redmine::SafeAttributes

  belongs_to :author, :class_name => 'User', :foreign_key => :author_id
  belongs_to :course
  has_many :biding_projects, :dependent => :destroy
  has_many :projects, :through => :biding_projects
  has_many :courses_member, :class_name => 'User', :through => :courses
  has_many :journals_for_messages, :as => :jour, :dependent => :destroy
  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
  has_many :homework_for_courses, :dependent => :destroy
  has_many :courses, :through => :homework_for_courses, :source => :course
  has_many :homeworks, :class_name => 'HomeworkAttach', :dependent => :destroy
  has_many :homework_evaluations, :through => :homeworks
  has_many :join_in_contests, :dependent => :destroy
  has_many :praise_tread, as: :praise_tread_object, dependent: :destroy
  # has_many :fork_homework, :class_name => 'Bid', :conditions => "#{Bid.table_name}.parent_id = #{id}"
  acts_as_attachable

  NAME_LENGTH_LIMIT = 60
  DESCRIPTION_LENGTH_LIMIT = 3000
  validates :name, length: {maximum: NAME_LENGTH_LIMIT}, presence: true
  validates :description, length: {maximum: DESCRIPTION_LENGTH_LIMIT}
  validates :author_id, presence: true
  validates :deadline, presence: true, format: {:with => /^[\d]{4}[-][\d]{1,2}[-][\d]{1,2}$/}
  validates :name, length: {maximum: NAME_LENGTH_LIMIT}
  validates :budget, format: { with: ->(p) { if p.reward_type == 1 then /^(\d+)$|^(\d+).([0-9]{2})|^(\d+).([0-9]{1})$/
                                             elsif p.reward_type == 3 then /^(\d+)$|^(\d+).([0-9]{1})$/ end } }

  validate :validate_user
  validate :validate_reward_type
  after_create :act_as_activity

  scope :visible, lambda {|*args|
    nil
  }

  scope :like, lambda {|arg|
    if arg.blank?
      where(nil)
    else
      pattern = "%#{arg.to_s.strip.downcase}%"
      where("LOWER(id) LIKE :p OR LOWER(name) LIKE :p OR LOWER(description) LIKE :p", :p => pattern)
    end
  }

  scope :course_visible, lambda {|*args|
                         includes(:courses).where(Course.allowed_to_condition(args.shift || User.current, :view_homeworks, *args))
                       }

  acts_as_watchable
  acts_as_taggable

  acts_as_event :title => Proc.new {|o| "#{l(:label_course_homework)} ##{o.id}: #{o.name}" },
                :description => :description,
                :author => :author,
                :url => Proc.new {|o| {:controller => 'bids', :action => 'show', :id => o.id}}

  acts_as_activity_provider :type => 'homeworks',
                            :author_key => :author_id

  acts_as_activity_provider :find_options => {:include => [:projects, :author]},
                            :author_key => :author_id

  safe_attributes 'name',
    'description',
    'budget',
    'deadline',
    'homework_type',
    'reward_type',
    'password'


  # safe_attributes 'name',
  # 'description',
  # 'deadline'
  def add_jour(user, notes, reference_user_id = 0, options = {})
    if options.count == 0
      jfm = JournalsForMessage.new(:user_id => user.id, :notes => notes, :reply_id => reference_user_id)
      self.journals_for_messages << jfm
      jfm
    else
      jfm = self.journals_for_messages.build(options)
      jfm.save
      jfm
    end
  end

  def self.creat_bids(budget, deadline, name, description=nil, reward_type)
    self.create(:author_id => User.current.id, :budget => budget,
    :deadline => deadline, :name => name, :description => description, :commit => 0, :reward_type => reward_type)
  # self.acts << Activity.new(:user_id => self.author_id)
  end

  def update_bids(budget, deadline, name, description=nil)
    if(User.current.id == self.author_id)
    self.name = name
    self.budget = budget
    self.deadline = deadline
    self.description = description
    self.save
    end
  end

  def delete_bids
    unless self.nil?
      if User.current.id == self.author_id
      self.destroy
      end
    end
  end

  def set_commit(commit)
    self.update_attribute(:commit, commit)
  end

  private

  def validate_user
    errors.add :author_id, :invalid if author.nil? || !author.active?
  end

  def validate_reward_type
    errors.add :reward_type, :invalid if self.reward_type == 0
  end

  def act_as_activity
    self.acts << Activity.new(:user_id => self.author_id)
  end

  # used to validate weather the user is the creater of the bid
  # added by william
  def validate_bid_manager(user_id)
    unless user_id.nil?
      if self.author_id == user_id
      return true
      else
      return false
      end
    end
  end


end