Ransack：通过关联

Question

我是Rails的新手，与Ransack存在问题：

这是模型项目

 class Project < ApplicationRecord
  searchkick
  belongs_to :company
  belongs_to :m_category
  has_many :project_industries, dependent: :destroy
  has_many :m_industries, through: :project_industries

end

这是模特行业：

 class Industry < ApplicationRecord
  include M
  belongs_to :m_industry_category
  has_many :project_industries, dependent: :destroy, foreign_key: :industry_id
  has_many :projects, through: :project_industries
end

这是模型IndustryCategory：

 class IndustryCategory < ApplicationRecord
  has_many :industries, dependent: :destroy,
    foreign_key: :industry_category_id

  has_many :projects, through: :industries
end

现在，我想通过IndustryCategory搜索项目，但我不知道如何。请帮我！！ TKS

Answer 1

你可以使用这样的东西

@industrty_category = IndustryCategory.find(params[:id])

@project = @industry_category.projects.all