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ruby-on-rails - ActionController::RoutingError (没有路线匹配 [POST] "/cars/1/consumptions/new"):

问题描述

添加消费时出现此路由错误（提交失败后）并且我卡住了，我做错了什么？

一个用户可以拥有几辆汽车，并且他想为他的每辆汽车照顾他的汽油消耗。

我有三个活动记录模型

create_table "cars", force: :cascade do |t|
    t.string "car_name"
    t.integer "user_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

  create_table "consumption_searches", force: :cascade do |t|
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

  create_table "consumptions", force: :cascade do |t|
    t.float "total_price"
    t.float "kilometers"
    t.string "shop"
    t.float "liter_price"
    t.float "total_liters"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.integer "car_id"
  end

  create_table "users", force: :cascade do |t|
    t.string "email", default: "", null: false
    t.string "encrypted_password", default: "", null: false
    t.string "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

我在consumption_controller.rb中的创建方法

def create 
    @car = Car.find(params[:car_id])
    @consumption = Consumptions.new(consumption_params)
    @consumption.car = @car
  if @consumption.save!
    redirect_to car_consumptions_path, notice: 'consumption was successfully created.'
  else
    render :new
  end
end

汽车控制器.rb 

def show
    @car = Car.find(params[:id])
    @search = ConsumptionSearch.new(params[:search])
    @consumptions = @search.date_range
    @consumptions = @consumptions.order('created_at ASC').where(car_id: @car.id)
end

意见/消费/_form.html.erb

<%= simple_form_for car_consumptions_path do |f| %>
...
<% end %>

路线.rb

Rails.application.routes.draw do
  devise_for :users
    root to: "cars#index"

    resources :cars do
        resources :consumptions
    end
end

铁路路线 | grep 消费

  car_consumptions GET    /cars/:car_id/consumptions(.:format)                                                     consumptions#index
                          POST   /cars/:car_id/consumptions(.:format)                                                     consumptions#create
      new_car_consumption GET    /cars/:car_id/consumptions/new(.:format)                                                 consumptions#new
     edit_car_consumption GET    /cars/:car_id/consumptions/:id/edit(.:format)                                            consumptions#edit
          car_consumption GET    /cars/:car_id/consumptions/:id(.:format)                                                 consumptions#show
                          PATCH  /cars/:car_id/consumptions/:id(.:format)                                                 consumptions#update
                          PUT    /cars/:car_id/consumptions/:id(.:format)                                                 consumptions#update
                          DELETE /cars/:car_id/consumptions/:id(.:format)                                                 consumptions#destroy

按照要求 在此处输入图像描述

编辑

如果可以提供帮助，这是我在 HTML 中的内容：

<form novalidate="novalidate" class="simple_form /cars/1/consumptions" action="/cars/1/consumptions/new" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓"><input type="hidden" name="authenticity_token" value="0nwq/pQSXCU2ptBjbewTCBffPLpZZUPAj6/HPQTGtYd8cHz9zv8R/C/JYnXPDpKw5o3/vGlVtav2Sa2nSvgOQdQ==">

标签： ruby-on-railsruby-on-rails-5

解决方案

试试这个：

 <%= form_for [@cars, @consumptions] do |form| %>
      ...
  <% end %>

或者

<%= form_with(model: [ @cars, @consumptions ]) do |form| %>

*** 更新：

resources :cars, shallow: true do
    resources :consumptions
end

成形式：

<% = simple_form_for [@car, @consumption] do |f| %>

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