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我目前有以下三种模式:通过协会查找模型
class Vacancy < ActiveRecord::Base
# Database Associations
has_many :vacancy_occupations, :foreign_key => :vacancy_id
has_many :occupations, :through => :vacancy_occupations
belongs_to :country
belongs_to :employer
# Database Validations
validates_presence_of :name, :title, :description
end
class VacancyOccupation < ActiveRecord::Base
belongs_to :vacancy, :foreign_key => :vacancy_id
belongs_to :occupation, :foreign_key => :concept_id
end
class Occupation < Concept
end
class Concept < ActiveRecord::Base
# Database Associations
has_many :labels
has_many :vacancy_occupations, :foreign_key => :concept_id
has_many :cv_occupations, :foreign_key => :concept_id
has_many :vacancies, :through => :vacancy_occupations
has_many :cvs, :through => :cv_occupations
# Database Validations
validates_presence_of :uri
validates_uniqueness_of :uri
end
我正在寻找的是选择具有特定的职业空缺,所有的机制。目前我可以通过以下声明得到它:
@vacancies = Vacancy.joins(:vacancy_occupations).where('vacancy_occupations.concept_id' => occupation_ids).uniq
但我想知道是否有一个更干净的语法来完成这项工作?一直玩的包括选项,并尝试从不同的模型作为出发点,但我似乎失去了绝望。
将结束我在那有一个职业联刚结束的所有空缺,而我只是想挂一个特定职业的空缺。 – 2011-05-18 11:29:13
职业= Occupation.find(...)then,occupation.vacancies – jaydel 2011-05-18 11:39:02