Question

我正在尝试实现一种方法，用户可以操作三个单选按钮，每个按钮都有指定的方法，通过转发，收藏或默认（按日期）对推文进行排序。

目前，该页面按日期列出了推文的默认值，但每当我按下两个按钮中的任何一个时，我都会收到错误“此页面不存在。”

我的.rb文件是：

require 'sinatra'
require 'twitter'
require 'erb'
include ERB::Util

config = {
    :consumer_key =>  '..' ,
    :consumer_secret => '..' ,
    :access_token => '..' ,
    :access_token_secret => '..'
}

client = Twitter::REST::Client.new(config)

get '/list_of_tweets' do
   puts "Visiting history page..."
   tweets = client.user_timeline(user)
   @history = tweets.take(20)
   erb :tweets_list
end

我的tweets_list.erb文件是：

<!DOCTYPE html>
<html>
<head>
  <title>Twitter Interface</title>
</head>
<body>

<h1>List of Tweets</h1>

<form method="post">
  <h3>Sort Tweets by</h3>
  <input type="radio" name="operation" value="favorite_count" checked/>Favourites
  <input type="radio" name="operation" value="retweet_count"/>Retweets
  <input type="radio" name="operation" value="default"/>Default
  <input type="submit" value="submit"/>
</form>

<% unless @history.nil? %>
    <% if @params[:operation] == "favourite_count"%>
        <% @history = tweets.take(20).sort_by!{|tweet| tweet.favorite_count} %>
    <% else %>
        <% @history.reverse! %>
    <% end %>
    <% if @params[:operation] == "retweet_count" %>
        <% @history = tweets.take(20).sort_by!{|tweet| tweet.favorite_count} %>
    <% else %>
        <% @history.reverse! %>
<% end %>
    <% if @params[:operation] == "default" %>
    <% @history = tweets.take(20) %>
    <% else %>
        <% @history.reverse! %>
    <% end %>

    <table border="1">
      <tr>
        <th>Time Posted</th>
        <th>Description of Tweets</th>
        <th>Number of Retweets</th>
        <th>Number of Favourites</th>
      </tr>

      <% @history.each do |tweet| %>
          <tr>
            <td><%= tweet.created_at %></td>
            <td><%= tweet.text %></td>
            <td><%= tweet.retweet_count %></td>
            <td><%= tweet.favorite_count %> </td>
          </tr>
      <% end %>
    </table>
<% end %>

Answer 1

我对sinatra并不是特别熟悉，但您似乎已将表单方法设置为post，但post没有/list_of_tweets处理程序路线。这个答案提供了一些定义动词不可知处理程序的建议：

https://stackoverflow.com/a/8424097/4280232

你可以试试这个

list_of_tweets = lambda do
  puts "Visiting history page..."
  tweets = client.user_timeline(user)
  @history = tweets.take(20)
  erb :tweets_list
end
get  '/list_of_tweets', &list_of_tweets
post '/list_of_tweets', &list_of_tweets

或者，可能更正确，因为此操作似乎是只读的，您可以将表单上的方法设置为＆＃34; get＆＃34;而不是＆＃34; post＆＃34;。见http://www.w3.org/TR/html401/interact/forms.html#h-17.13.1

<form method="get">

Answer 2

.rb文件：

require 'sinatra'
require 'twitter'
require 'erb'
include ERB::Util

config = {
:consumer_key =>  '..' ,
:consumer_secret => '..' ,
:access_token => '..' ,
:access_token_secret => '..'
}

client = Twitter::REST::Client.new(config)
get '/list_of_tweets' do
puts "Visiting history page..."
tweets = client.user_timeline(user)
@history = tweets.take(20)
unless @params[:operation].nil?
    puts "selected #{@params[:operation]}"
    if @params[:operation] == "favorite_count"
        @history.sort_by!{|tweet| tweet.favorite_count}
        @history.reverse!
    elsif @params[:operation] == "retweet_count"
        @history.sort_by!{|tweet| tweet.retweet_count}
        @history.reverse!
    elsif @params[:operation] == "default"
        puts "default"
    end
end
erb :tweets_list
end

.erb文件：

<!DOCTYPE html>
<html>
<head>
  <title>Twitter Interface</title>
</head>
<body>

<h1>List of Tweets</h1>

<form method="post">
  <h3>Sort Tweets by</h3>
  <input type="radio" name="operation" value="favorite_count" checked/>Favourites
  <input type="radio" name="operation" value="retweet_count"/>Retweets
  <input type="radio" name="operation" value="default"/>Default
  <input type="submit" value="submit"/>
</form>

<table border="1">
  <tr>
    <th>Time Posted</th>
    <th>Description of Tweets</th>
    <th>Number of Retweets</th>
    <th>Number of Favourites</th>
  </tr>

  <% @history.each do |tweet| %>
      <tr>
        <td><%= tweet.created_at %></td>
        <td><%= tweet.text %></td>
        <td><%= tweet.retweet_count %></td>
        <td><%= tweet.favorite_count %> </td>
      </tr>
  <% end %>
</table>
<% end %>

通过重新推文/收藏夹对推文进行排序

2 个答案: