如何在rails中跨越belongs_to和has_many关系？

Question

I have the models below:

class Origtext < ActiveRecord::Base
  attr_accessible :book, :chapter, :textual, :verse
  has_many :reviews
end


class Review < ActiveRecord::Base
  belongs_to :origtext
  attr_accessible :description
end

The below collects all origtexts where the book is 'Bible'

@origtexts = Origtext.where(:book => 'Bible')

What is the ruby code for how to collect all reviews associated with a certain book?

Posting code to iterate through reviews:

# @reviews.each do |review|
    #   puts review
    # end

Answer 1

Try this in your console:

@origtexts = Origtext.where(:book => 'Bible')

@origtexts.each do |orig_text|
  puts orig_text.name
  puts orig_text.reviews # puts the reviews associated with the orig_text
end

Or with an id:

@origtext = Origtext.where(id: params[:id]).first
@origtext.reviews # returns the reviews associated with the origtext

Or directly from the Review model:

the_holy_bible = Origtext.where(:book => 'Bible').first
@reviews = Review.where(origtext_id: the_holy_bible.id)

Answer 2

它应该像以下一样简单：

@reviews = @origtexts.each(&:reviews)

Answer 3

@reviews = Review.where(:origtext => { :book => 'Bible' })