Question

我在与rails 4的关联中创建记录时遇到了麻烦。它基本上是Entry和Author之间的关联，中间有一个名为AuthorsEntry的连接表。架构如下：

class Entry < ActiveRecord::Base
  validates :name, presence: true
  validates :from, presence: true
  validates :to, presence: true

  belongs_to :event
  has_many :authors, through: :authors_entry
  has_many :authors_entry

class AuthorsEntry < ActiveRecord::Base
  validates :author, presence: true
  validates :entry, presence: true

  belongs_to :author
  belongs_to :entry
end

class Author < ActiveRecord::Base
  belongs_to :event
  has_many :entries, through: :authors_entry
  has_many :authors_entry

  validates :name, presence: true
  validates :event, presence: true
end

在我的program_entries_controller.rb我有以下方法：

 def create
    @program_entry = Entry.new(program_entry_params)

    author_ids_params.each do |id|
      @program_entry.authors << AuthorsEntry.build(author_id: id)
    end

    @program_entry.event = @event

    if @program_entry.save
      flash[:notice] = t(:program_entry_created_successfully)
      redirect_to organizer_event_program_entry_path(@event, @program_entry)
    else
      render :new
    end
  end

def program_entry_params
    params.require(:program_entry).permit(
      :name, :abstract, :'from(1i)', :'from(2i)', :'from(3i)',
      :'from(4i)', :'from(5i)', :'to(1i)', :'to(2i)', :'to(3i)', :'to(4i)',
      :'to(5i)'
    )
end

def author_ids_params
  params.require(:program_entry).permit(:author_ids => [])
end

我已经将作者保存在我的数据库中，创建操作应该只为Entry模型和关联（authors_entry）表添加新记录。但是当我尝试保存条目时，它总是在authors_entry上返回“is_invalid”。

Answer 1

连接表应命名为AuthorEntries以遵循rails约定。

通过关联使用has_many进行Rails 4验证错误

1 个答案: