ruby-on-rails - 如何定义范围并让它在视图中蔓延

Question

你好，我有一个模范学生，它有一个字段调用 admission_end:date 我想定义一个范围来帮助我让所有在特定日期结束录取的学生尝试这个但我的问题是如何让它显示我的观点

这是我定义的范围

attr_accessible :address, :address, :admission_ends, :certificate, :country, :date_of_birth, :diploma_id, :email, :first_name, :full_name, :gender, :how_did_you_hear_about_us, :lg_area, :middle_name, :other, :relationship_with_applicant, :state_of_origin, :surname, :telephone_number, :telephone_number, :title, :title, :image, :amount_deposit, :balance, :full_payment, :next_payment, :part_payment, :programme,  :mode_of_payment
   belongs_to :admin
   mount_uploader :image, ImageUploader

  belongs_to :diploma
  belongs_to  :payment
   scope :admission_due, -> { where("students.admission_ends >= ?", Date.today) }

Answer 1

使用 lambda 或 proc 定义作用域，因为 Rails 4 不允许作用域这样的作用域。

你可以像这样度过最后一天

scope :admission_due, lambda { |end_date| where("admission_ends >= ?", end_date) }

在视图中

Student.admission_due(Date.today)