Rails 6
bootstrap 4

在我的books_controller.rb中，我有：

def index
  @books = Book.select(:id,:name)
end

def new
    @book = Book.new
  end

def create
  @book = Book.new(book_params)
  respond_to do |format|
    if @book.save
      format.html { redirect_to @book,notice: 'Book was successfully created.' }
      format.json { render :show,status: :created,location: @book }
    else
      format.html { render :new }
      format.json { render json: @book.errors,status: :unprocessable_entity }
    end
  end
end

我有一张桌子，在我的views / books / index.htmlslim中，我有：

table.table.table-striped
  thead
    tr
      th Name
  tbody
    - @books.each do |book|
      tr
        td = book.name

我想做的是，在表格的末尾添加一个表格，允许用户添加书，而无需使用单独的表格，例如：

我尝试过：

= form_with url: new_book_path do |f|
  .form-inputs
    = f.label 'Add Book'
    = f.text_field :book_name
  .form-actions
    = f.submit    

我也尝试过：

= simple_form_for(@book) do |f|
  .form-inputs
    = f.input :book_name

但是当我单击“提交”时，什么也没有发生，并且收到以下消息：

actionController::RoutingError (No route matches [POST] "/bookd/new"):

我也尝试过：

= simple_form_for(@book || Book.new) do |f|
  .form-inputs
    = f.input :book_name

但是。我得到一个：

actionView::Template::Error (undefined method `book_name` for #<Book:0x000007f9cce...>);

另一个想法是将其链接，例如：

= link_to new_book_path,:class => "btn btn-primary btn-lg"

但是我如何传递book_name参数，以及应该执行哪个控制器操作？

这是我的路线：

books GET /books(.:format) books#index
POST /books(.:format) books#create
new_book GET /books/new(.:format) books#new
edit_book GET /books/:id/edit(.:format) books#edit
book GET /books/:id(.:format) books#show
PATCH /books/:id(.:format) books#update
PUT /books/:id(.:format) books#update
DELETE /books/:id(.:format) books#destroy