Ruby on rails Rails有许多贯穿where子句的语句

我需要帮助才能有所成就

我的分析

是否可能有许多：klass，通过：：subjects

，但使用联接表AnalysisSubject中的属性进行过滤？或者我的模型应该不同

class Analysis
  has_many :analysis_subjects, dependent: :destroy
  has_many :subjects, through: :analysis_subjects
  has_many :klasses, -> { where(year: ??????, semester: ??????), through: :subjects
end

class AnalysisSubject
  belongs_to :analysis
  belongs_to :subject

  # There are year:integer and semester:integer attributes
  # I want to use those attributes in my where clause for analysis.klasses
end

class Subject
  has_many :klasses
  has_many :analysis_subjects
  has_many :analyses, through: :analysis_subjects
end

class Klass
  belongs_to :subject
end

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如果重要的话，我使用的是Rails 5。谢谢您的帮助。

是的，但您应该以另一种方式支付：您必须声明

中的
中的
有许多：筛选的分析主题

class Analysis
  has_many :filtered_analisys_subjects, -> { where(year: x, semester: y }, foreign_key: "analysis_id", class_name: "AnalysisSubject", dependent: :destroy 
  has_many :subjects, through: :filtered_analysis_subjects
  has_many :klasses, through: :subjects