Question

我的Rails 4应用中有一个远程form_for，它没有请求JavaScript响应。当我单击表单上的提交时，我收到一个UnknownFormat错误。据说参数是：

{"utf8"=>"✓",
 "authenticity_token"=>"eAzS1lELwDL9Qt+fM2hAPlPmCxCgFPuAvl1QYWOIL3IBPdrnxn0woYYC+5uzGjyqH3lQxGxWGrYq/fnMrFNfnw==",
 "artist"=>{"name"=>"Joe"},
 "commit"=>"Save Artist"}

我的表单代码是：

= form_for(@artist, remote: true, authenticity_token: true) do |f|
  - if @artist.errors.any?
    #error_explanation
      %h2= "#{pluralize(@artist.errors.count, "error")} prohibited this artist from being saved:"
      %ul
        - @artist.errors.full_messages.each do |msg|
          %li= msg

  .field
    = f.label :name
    = f.text_field :name
  .actions
    = f.submit 'Save Artist'

我有一个create.js.erb文件，我的create中的ArtistsController方法如下：

  def new
    @artist = Artist.new

    respond_to do |format|
      format.js
    end
  end

  def create
    @artist = Artist.new(artist_params)

    if @artist.save
      respond_to do |format|
        format.js
      end
    end
  end

我的节目表格是：

= form_for @show, html: {role: 'form'} do |f|
  - if @show.errors.any?
    #error_explanation
      %h2= "#{pluralize(@show.errors.count, "error")} prohibited this venue from being saved:"
      %ul
        - @show.errors.full_messages.each do |msg|
          %li= msg

  .row
    = f.label :venue_id
    = f.collection_select :venue_id, Venue.all, :id, :name, class: 'form-control'
  .row
    .col-sm-6
      = link_to 'New Artist', new_artist_path, id: :new_artist_link, remote: true
  .row.row-centered
    .col-sm-6
      .form-group
        = f.label :date
        = f.date_select :show_date, order: [:day, :month, :year], class: 'form-control'
    .col-sm-6
      .form-group
        = f.label :doors_open
        = f.time_select :doors_open, class: 'form-control'
  .row.row-centered
    .col-sm-6
      .form-group
        = f.label :dinner_starts
        = f.time_select :dinner_starts, class: 'form-control'
    .col-sm-6
      .form-group
        = f.label :show_starts
        = f.time_select :show_starts, class: 'form-control'
  .row.row-centered
    .col-sm-6
      .form-group
        = f.label :dinner_ends
        = f.time_select :dinner_ends, class: 'form-control'
    .col-sm-6
      .form-group
        = f.label :show_ends
        = f.time_select :show_ends, class: 'form-control'

  .form-group
    = f.submit 'Save Show', class: 'btn btn-default'

我的艺术家视图中的new.js.erb文件是：

$('#new_artist_link').hide().after("<%= j render 'form' %>");

我的艺术家观点中的create.js.erb是：

$('#new_artist').remove();

控制台输出：

tarted GET "/artists/new" for 127.0.0.1 at 2015-02-26 22:46:12 -0600
Processing by ArtistsController#new as JS
  Rendered artists/_form.html.haml (2.7ms)
  Rendered artists/new.js.erb (4.2ms)
Completed 200 OK in 15ms (Views: 8.8ms | ActiveRecord: 0.2ms)


Started POST "/artists" for 127.0.0.1 at 2015-02-26 22:46:16 -0600
Processing by ArtistsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"0dhmOLTBguCAn4gdaIE0D0PyokHp4RLLZ8DDeqiA21Wo6W4JI7dyc/vfrBno80ibD235lSWj8/3zYGrXZ1uruA==", "artist"=>{"name"=>"fsa"}, "commit"=>"Save Artist"}
   (0.1ms)  begin transaction
  SQL (0.2ms)  INSERT INTO "artists" ("name", "created_at", "updated_at") VALUES (?, ?, ?)  [["name", "fsa"], ["created_at", "2015-02-27 04:46:16.795869"], ["updated_at", "2015-02-27 04:46:16.795869"]]
   (209.8ms)  commit transaction
Completed 406 Not Acceptable in 213ms

ActionController::UnknownFormat (ActionController::UnknownFormat):
  app/controllers/artists_controller.rb:20:in `create'


  Rendered /home/ryan/.rvm/gems/ruby-2.2.0@DoseyDoe/gems/web-console-2.0.0/lib/action_dispatch/templates/rescues/_source.erb (5.1ms)
  Rendered /home/ryan/.rvm/gems/ruby-2.2.0@DoseyDoe/gems/web-console-2.0.0/lib/action_dispatch/templates/rescues/_trace.html.erb (3.0ms)
  Rendered /home/ryan/.rvm/gems/ruby-2.2.0@DoseyDoe/gems/web-console-2.0.0/lib/action_dispatch/templates/rescues/_request_and_response.html.erb (0.9ms)
  Rendered /home/ryan/.rvm/gems/ruby-2.2.0@DoseyDoe/gems/web-console-2.0.0/lib/action_dispatch/templates/rescues/_web_console.html.erb (0.8ms)
  Rendered /home/ryan/.rvm/gems/ruby-2.2.0@DoseyDoe/gems/web-console-2.0.0/lib/action_dispatch/templates/rescues/diagnostics.html.erb within rescues/layout (26.7ms)

编辑：我不知道它是否有所作为，但远程表格是另一种模式的形式。

编辑2：修复了创建方法 - 仍然没有骰子。添加了我正在使用的表单模板链接到创建艺术家。

编辑3：添加了控制台输出

编辑4：添加了create.js.erb

Answer 1

尝试将format参数添加到form_for。您默认请求html响应，而您的控制器不知道如何回答。请求js响应应该修复它。

= form_for(@artist, format: js, authenticity_token: true) do |f|

Answer 2

只是遇到了同样的错误，经过数小时的调试发现，rails ujs是必需的，但未正确加载。如果您使用的是webpack，请确保使用start ujs。就我而言，我忘记了start();选项，即

import Rails from '@rails/ujs'; 
Rails.start();

或

require("@rails/ujs").start();

如果您喜欢require语法。

Rails远程表单发送html而不是js

2 个答案: