Ruby on rails 4 编辑具有两个唯一列的条目

问题：

# job.rb
class Job < ActiveRecord::Base
    # Relations
    has_many :logs, :dependent => :destroy

    accepts_nested_attributes_for :logs, allow_destroy: true, reject_if: proc { |a| a['user_id'].blank? }
end


# log.rb
class Log < ActiveRecord::Base
    belongs_to :job
    belongs_to :user

    # a single user should not be logged more than once per job
    validates :user_id, uniqueness: { scope: :job_id }
end


# user.rb
class User < ActiveRecord::Base
    has_many :logs

    validates_presence_of :name

    def self.all_active
        User.where( active: 1 )
    end

end

class JobsController < ApplicationController
before_action :set_job, only: [:show, :edit, :update, :destroy]

def index
  @jobs = Job.all
end

def show
end

def new
  @job = Job.new
  10.times { @job.logs.build }
end

def edit
  ( @job.people - @job.logs.count ).times { @job.logs.build }
end

def create
  @job = Job.new(job_params)

  # Set the admin id
  @job.logs.each do |log|
    log.admin_id = current_admin.id
  end

  respond_to do |format|
    if @job.save
      format.html { redirect_to @job, notice: 'Job was successfully created.' }
      format.json { render :show, status: :created, location: @job }
    else
      format.html { render :new }
      format.json { render json: @job.errors, status: :unprocessable_entity }
    end
  end
end

def update
  respond_to do |format|
    if @job.update(job_params)
      format.html { redirect_to @job, notice: 'Job was successfully updated.' }
      format.json { render :show, status: :ok, location: @job }
    else
      format.html { render :edit }
      format.json { render json: @job.errors, status: :unprocessable_entity }
    end
  end
end

def destroy
  @job.destroy
  respond_to do |format|
    format.html { redirect_to jobs_url, notice: 'Job was successfully destroyed.' }
    format.json { head :no_content }
  end
end

private
  # Use callbacks to share common setup or constraints between actions.
  def set_job
    @job = Job.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def job_params
    params.require(:job).permit(:people, :logs_attributes => [:user_id])
  end
end

<tr>
  <td>
    <%= f.label :user_id %><br>
    <%= f.collection_select(:user_id, User.all_active, :id, :name, { :prompt => 'Select User' } ) %>
  </td>
  <td>
    <%= f.label :performance %><br>
    <%= f.number_field :performance %>
  </td>
</tr>

当我编辑嵌套模型的内容时，它会保存新条目，而不是编辑已经存在的条目

型号：

# job.rb
class Job < ActiveRecord::Base
    # Relations
    has_many :logs, :dependent => :destroy

    accepts_nested_attributes_for :logs, allow_destroy: true, reject_if: proc { |a| a['user_id'].blank? }
end


# log.rb
class Log < ActiveRecord::Base
    belongs_to :job
    belongs_to :user

    # a single user should not be logged more than once per job
    validates :user_id, uniqueness: { scope: :job_id }
end


# user.rb
class User < ActiveRecord::Base
    has_many :logs

    validates_presence_of :name

    def self.all_active
        User.where( active: 1 )
    end

end

class JobsController < ApplicationController
before_action :set_job, only: [:show, :edit, :update, :destroy]

def index
  @jobs = Job.all
end

def show
end

def new
  @job = Job.new
  10.times { @job.logs.build }
end

def edit
  ( @job.people - @job.logs.count ).times { @job.logs.build }
end

def create
  @job = Job.new(job_params)

  # Set the admin id
  @job.logs.each do |log|
    log.admin_id = current_admin.id
  end

  respond_to do |format|
    if @job.save
      format.html { redirect_to @job, notice: 'Job was successfully created.' }
      format.json { render :show, status: :created, location: @job }
    else
      format.html { render :new }
      format.json { render json: @job.errors, status: :unprocessable_entity }
    end
  end
end

def update
  respond_to do |format|
    if @job.update(job_params)
      format.html { redirect_to @job, notice: 'Job was successfully updated.' }
      format.json { render :show, status: :ok, location: @job }
    else
      format.html { render :edit }
      format.json { render json: @job.errors, status: :unprocessable_entity }
    end
  end
end

def destroy
  @job.destroy
  respond_to do |format|
    format.html { redirect_to jobs_url, notice: 'Job was successfully destroyed.' }
    format.json { head :no_content }
  end
end

private
  # Use callbacks to share common setup or constraints between actions.
  def set_job
    @job = Job.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def job_params
    params.require(:job).permit(:people, :logs_attributes => [:user_id])
  end
end

<tr>
  <td>
    <%= f.label :user_id %><br>
    <%= f.collection_select(:user_id, User.all_active, :id, :name, { :prompt => 'Select User' } ) %>
  </td>
  <td>
    <%= f.label :performance %><br>
    <%= f.number_field :performance %>
  </td>
</tr>

此外，显示原始条目，然后在其下方是相同的重复条目，但由于错误而显示为“红色”。空白条目列表（从10次）不再显示

但是，在编辑屏幕上，如果我将所有日志的用户都更改为其他用户，则不会出现错误。它将使用这些新选择的用户创建新条目，而不是修改当前条目

---

我希望我已经提供了足够的信息来解决这个问题！谢谢

所以，问题的原因是没有将日志的

：id

参数白名单

我改变了我的工作内容

发件人：

致：

这就是导致验证问题的原因！这可能是太复杂的q/a问题，无法帮助任何人，但是，嘿，它只是可能

def job_params
  params.require(:job).permit(:people, :logs_attributes => [:id, :user_id])
end