我的问题是我在工作人员和培训之间有一个has_many关联，并且有一个特殊的联接表，其中包含有关每个工作人员已完成的培训的其他信息。
class Training < ApplicationRecord
belongs_to :worker, optional: true
belongs_to :line, optional: true
has_many :trainingslines
has_many :trainingsmemberships
has_many :workers, through: :trainingsmemberships
has_many :lines, through: :trainingslines
accepts_nested_attributes_for :worker
accepts_nested_attributes_for :line
accepts_nested_attributes_for :trainingsmemberships
validates :name, presence: true, length: { minimum: 1 }
mount_uploader :attachement
end
class TrainingsController < ApplicationController
before_action :logged_in_user
before_action :admin_user
helper_method :sort_column, :sort_direction
def index
@trainings = Training.paginate(page: params[:page])
end
def new
@training = Training.new
end
def show
@training = Training.find(params[:id])
end
def insert_line(line)
self.line.clear
self.line << line
end
def insert_worker(worker)
self.worker.clear
self.worker << worker
end
def create
@training = Training.new(training_params)
if @training.save
flash[:info] = "Training hinzugefügt."
redirect_to root_url
else
render 'new'
end
end
def destroy
Training.find(params[:id]).destroy
flash[:success] = "Training gelöscht"
redirect_to trainings_url
end
def edit
@training = Training.find(params[:id])
end
def update
@training = Training.find(params[:id])
if @training.update_attributes(training_params)
flash[:success] = "Training updated"
redirect_to training_path
else
render 'edit'
end
end
def add_worker_tm
@workers = Worker.order("#{sort_column} #{sort_direction}")
end
def addworkers_tm
@trainings = Training.all
@training = params[:training_id]
@tm = Trainingsmembership.new(tm_params)
if @tm.save
flash[:success] = "Mitarbeiter eingefügt"
redirect_to training_path
else
render 'add_worker_tm'
end
end
private
def sortable_columns
["name", "line_ids", "shift_id", "position_id"]
end
def sort_column
Worker.column_names.include?(params[:sort]) ? params[:sort] : "name"
end
def sort_direction
%w[asc desc].include?(params[:direction]) ? params[:direction] : "asc"
end
def training_params
params.require(:training).permit(:name, :shortname, :clockcycle, :cc, :jcms, :status, :line_ids => [], :worker_ids => [])
end
def tm_params
params.require(:trainingsmembership).permit(:worker_id, :training_id, :duration, :date, :attachement, :comment)
end
# Confirms a logged-in user.
def logged_in_user
unless logged_in?
store_location
flash[:danger] = "Please log in."
redirect_to login_url
end
end
# Confirms an admin user.
def admin_user
redirect_to(root_url) unless current_user.admin?
end
end
<%= simple_form_for(@trainingmem = Trainingsmembership.new, url: add_worker_tm_trainings_path) do |f| %>
<%= f.input :training_id, collection: Training.all, label_method: :name, value_method: :id, label: 'Training:', include_blank: false %>
<%= f.input :duration, label: 'Gültigkeit:' %>
<%= f.input :date, :as => :string, :input_html => { data: {behaviour: "datepicker"}}, label: 'Prüfungstermin:' %>
<%= f.input :worker_id, collection: Worker.all, label_method: :name, value_method: :id, label: 'Mitarbeiter', include_blank: false, input_html: { multiple: true } %>
<%= f.input :comment, as: :text, label: 'Bemerkung:' %>
<%= f.input :attachement, as: :file, label: 'PDF-Protokoll:' %>
<%= f.submit "Edit training", class: "btn btn-primary" %>
<% end %>
class Trainingsmembership < ApplicationRecord
belongs_to :worker
belongs_to :training
end
我的trainingsmembership表包含以下列：
create_table :trainingsmemberships, id: false do |t|
t.belongs_to :worker, index: true
t.belongs_to :training, index: true
t.integer :duration
t.timestamp :date
t.string :attachement
t.text :comment
t.timestamps
end
我想使用带有此simple_form的培训控制器，将带有所有其他参数的工作人员添加到trainingsmembership表中。
我对使用ruby还是很陌生的，使其他一些人可以通过关系工作很多，但是所有这些在联接表中都没有任何其他数据。还是我需要一个新的trainingsmembership控制器？
我已经用Google搜索过，但是没有找到任何有用的建议。
编辑：当前我没有收到任何错误消息，我将被重定向到同一页面。我的调试器提供了以下信息：
Started POST "/trainings/add_worker_tm" for 127.0.0.1 at 2018-08-20 15:32:44 +0200
Processing by TrainingsController#addworkers_tm as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"bZ0MxPcFgUe0EvoVd6VSeUWm4ZT5y0fc8A+eYZmuvvCLh8VoV0e63pxKTKSmvkUuNx1WUMB70Av6uahnt6Av/A==", "trainingsmembership"=>{"training_id"=>"1", "duration"=>"12", "date"=>"21.08.2018", "worker_id"=>["", "1"], "comment"=>""}, "commit"=>"Training bearbeiten"}
User Load (1.0ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
↳ app/helpers/sessions_helper.rb:22
Unpermitted parameter: :worker_id
(1.0ms) BEGIN
↳ app/controllers/trainings_controller.rb:72
Training Load (0.0ms) SELECT `trainings`.* FROM `trainings` WHERE `trainings`.`id` = 1 LIMIT 1
↳ app/controllers/trainings_controller.rb:72
(0.0ms) ROLLBACK
↳ app/controllers/trainings_controller.rb:72
Rendering trainings/add_worker_tm.html.erb within layouts/application
Training Load (1.0ms) SELECT `trainings`.* FROM `trainings`
↳ app/views/trainings/add_worker_tm.html.erb:54
Worker Load (1.0ms) SELECT `workers`.* FROM `workers`
↳ app/views/trainings/add_worker_tm.html.erb:57
Rendered trainings/add_worker_tm.html.erb within layouts/application (429.9ms)
Rendered layouts/_shim.html.erb (0.0ms)
Rendered layouts/_header.html.erb (2.0ms)
Rendered layouts/_footer.html.erb (1.0ms)
Completed 200 OK in 654ms (Views: 594.1ms | ActiveRecord: 3.9ms)
答案 0 :(得分：0)
我以类似您的行为的方式设置了应用程序，发现在tm_params方法中设置强参数时，您需要为worker_id传递数组，但是您将其作为整数值传递。这是因为您允许multiple: true作为工作人员字段。因此，当您尝试保存记录时，只需从参数中删除worked id即可，但是worker_id是必填字段，因此它回滚了事务。因此，您需要从
tm_params方法
def tm_params
params.require(:trainingsmembership).permit(:worker_id, :training_id, :duration, :date, :attachement, :comment)
end
到
def tm_params
params.require(:trainingsmembership).permit(:training_id, :duration, :date, :attachement, :comment, worker_id: [])
end
编辑：
要使其倍增，您可以使用另一个参数并像下面这样遍历它：
def addworkers_tm
@workerall = Worker.all
@ws = params[:worker_ids].require('worker_ids')
@trainings = Training.all
@ws.each do |w|
@tm = Trainingsmembership.new(tm_params)
@tm.worker_id = w
if @tm.save
flash[:success] = "Mitarbeiter eingefügt"
else
@tm.errors
render 'add_worker_tm'
return
end
end
redirect_to root_path
end
<% @workerall.each do |worker| %>
<tr>
<td><%= check_box_tag "worker_ids[worker_ids][]", worker.id %></td>
<td><%= worker.name %></td>