如何在 Rails 中实现确认或预览？

Question

我正在从我的 rails 应用程序调用 JSON api。用户在表单中输入名称，然后我调用 JSON API 并查找该名称是否有任何匹配项。有时它只是一个，所以我使用 JSON 中提供的数据创建条目。但大多数时候 JSON 上有多个结果，我如何实现“嘿，我发现同名的多个结果，你在找哪一个？”然后用户选择他/她想要的，然后在数据库中创建一个条目。

我编写了一个简单的脚本来测试 JSON。

data = JSON.load response

if data['results'].empty?
  #if the JSON data is empty
  puts "There was no movie found. Did you spell the movie name correctly?"
elsif data['results'].count > 1
  #if JSON Data has more than one result
  data['results'].each do |movie|
    Movie::Movies << Movie.new(movie['id'],
                      movie['title'],
                      movie['release_year'],
                      (imdb_url + movie['imdb']).to_s,
                      movie['rating'],
                      movie['poster_120x171'],
                      movie['poster_240x342'],
                      movie['poster_400x570'])
    end
    Movie::Movies.each do |movie|
      puts "#{movie.title} : #{movie.release_year}"
  end
else
  #IF JSON has only one entry
    movie = Movie.new(data['results'][0]['id'],
                      data['results'][0]['title'],
                      data['results'][0]['release_year'],
                      (imdb_url + data['results'][0]['imdb']).to_s,
                      data['results'][0]['rating'],
                      data['results'][0]['poster_120x171'],
                      data['results'][0]['poster_240x342'],
                      data['results'][0]['poster_400x570'])
end

这是我现在的控制器。它只能处理 JSON 提供的 Hash 中的第一条记录。如果有多个结果，我不知道如何处理这种情况。

  def create
        require 'rest_client'
        require 'json'
        imdb_url = 'http://www.imdb.com/title/'
        movie_title = movie_params['title'].delete(' ')
        response = RestClient.get "http://api-public.guidebox.com/v1.43/US/xxxxxxxxxxxxxxxx<api-key>/search/movie/title/#{movie_title}"
        data = JSON.load response
        @movie = Movie.new #i am doing this because my for was giving error.
        if data['results'].empty?
            flash[:alert] = "Did you spell the Title correctly? Or Maybe we could not find the movie you are looking for."
            render 'new'
       elsif data['results'].count > 2
       #Display all results to the user for them to pick what they really intended and create an entry of whaterver they choose.
        else
            @movie = Movie.new(gb_id: data['results'][0]['id'],
                               title: data['results'][0]['title'],
                               release_year: data['results'][0]['release_year'],
                               imdb_link: (imdb_url + data['results'][0]['imdb']).to_s,
                               rating: data['results'][0]['rating'],
                               small_img: data['results'][0]['poster_120x171'],
                               med_img: data['results'][0]['poster_240x342'],
                               large_img: data['results'][0]['poster_400x570'])
            if @movie.save
                flash[:notice] = 'Movie has been successfully Added.'
                redirect_to @movie
            else
                flash[:alert] = "Something went wrong. Please try again."
                render 'new'
            end
      end
    end

此外，在我的创建操作中，我不得不再次调用 @movie = Movie.new，因为表单给了我错误。

Answer 1

您已接近 - 允许用户消除结果的歧义，请执行与 else 子句中类似的操作，但在循环中使用单独的操作。

# controller
def create
  #...
  if data['results'].empty?
              flash[:alert] = "Did you spell the Title correctly? Or Maybe we could not find the movie you are looking for."
              render 'new'
  elsif data['results'].count > 1
    @movie_choices = []
    data['results'].each_with_index do |result, idx|
      @movie_choices << Movie.new(gb_id: data['results'][idx]['id'],
                         title: data['results'][idx]['title'] #, ...

    end
    render 'movies/choose_movie'
  else
    @movie = Movie.new(gb_id: data['results'][0]['id'],
                       title: data['results'][0]['title'],
                       release_year: data['results'][0]['release_year'],
                       imdb_link: (imdb_url + data['results'][0]['imdb']).to_s,
                       rating: data['results'][0]['rating'],
                       small_img: data['results'][0]['poster_120x171'],
                       med_img: data['results'][0]['poster_240x342'],
                       large_img: data['results'][0]['poster_400x570'])
    if @movie.save
        flash[:notice] = 'Movie has been successfully Added.'
        redirect_to @movie
    else
        flash[:alert] = "Something went wrong. Please try again."
        render 'new'
    end
  end
end

def movie_chosen
  chosen_movie_gb_id = params[:movie_gb_id] 
  @movie = Movie.new(gb_id: params[:movie_id],
                     title: params[:movie_title],
                     # ...
                     )
  if @movie.save
      flash[:notice] = 'Movie has been successfully Added.'
      redirect_to @movie
  else
      flash[:alert] = "Something went wrong. Please try again."
      render 'new'
  end
end

# app/views/movies/choose_movie.html.erb
<%= form_tag 'movies/movie_chosen' do %>
  <div>
    <% @movie_choices.each do |mc| %>
      <div>
        <%= radio_button_tag :movie_id, mc.gb_id %> <%= mc.title %>
        <%= hidden_field_tag :movie_title, mc.title %>
        <!-- ... other fields of the movie object -->
      </div>
    <% end %>
  </div>
<% end %>