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我使用 Flask 創(chuàng)建了一個(gè)搜尋引擎，它會(huì)傳回從與健康主題相關(guān)的文章產(chǎn)生的維基百科語(yǔ)料庫(kù)的搜尋結(jié)果。有些查詢會(huì)傳回?cái)?shù)百個(gè)結(jié)果，因此我想新增一個(gè)功能，將結(jié)果拆分為多個(gè)頁(yè)面。下面是產(chǎn)生網(wǎng)頁(yè)的index.html程式碼：

{% extends "base.html" %}
{% block title %}Search Page{% endblock %}
{% block contents %}

  <div class="container">
    <div class="row">
      <div class="col-lg-12">
        <div class="search-result-box card-box">
          <div class="row">
            <div class="col-md-8 offset-md-2">
              <div class="pt-3 pb-4">
                <div class="search-form">
                  <form action="#" method="POST">
                      <div class="input-group">
                        <input type="text" name="msg" class="form-control input-lg">                    
                        <div class="input-group-btn">
                          <button class="btn  btn-primary" type="submit">Search</button>
                        </div>
                      </div>
                  </form>
                </div>

                <div class="mt-4 text-center"><h4>Search Results For {{user_query}}</h4></div>
              </div>
            </div>
          </div>
          <!-- end row -->
          <ul class="nav nav-tabs tabs-bordered">
              <li class="nav-item"><a href="#home" data-toggle="tab" aria-expanded="true" class="nav-link active">All results <span class="badge badge-success ml-1">{{search_results_list|length}}</span></a></li>
          </ul>
             <div class="tab-content">
                <div class="tab-pane active" id="home">
                    <div class="row">
                        <div class="col-md-12">
                            <div class="search-item">
                                {% if search_results_list|length > 0 %}

                                {% for r in search_results_list %}

                                <div class="font-13 text-success mb-3"><a href='{{r[0]}}' target="_blank">{{r[0]}}</a></div>
                                <div class="font-13 text-success mb-3"><p target="_blank">{{r[1]}}</p></div>

                                {% endfor %}
                                {% else %}
                                <p class="mt-4 text-center">No search result</P>
                                {% endif %}
                              </div>
                                <ul class="pagination justify-content-end pagination-split mt-0">
                                  <li class="page-item"><a class="page-link" href="#" aria-label="Previous"><span aria-hidden="true">?</span> <span class="sr-only">Previous</span></a></li>
                                  <li class="page-item active"><a class="page-link" href="#">1</a></li>
                                  <li class="page-item"><a class="page-link" href="#" aria-label="Next"><span aria-hidden="true">?</span> <span class="sr-only">Next</span></a></li>
                              </ul>
                              <div class="clearfix"></div>
                           </div>
                     </div>
                </div>
                <!-- end All results tab -->

              </div>
            </div>
         </div>
        </div>
        <!-- end row -->
  </div>
  <!-- Footer -->
  <footer id="main-footer" class="pt-2 py-4 bg-dark text-white text-center">
    Copyright &copy;
    <span class="year"></span> Team Dream
  </footer>
  <!-- container -->


{% endblock %}

我沒(méi)有太多使用 HTML 建立網(wǎng)頁(yè)的經(jīng)驗(yàn)，所以我不完全確定如何新增此功能。這裡還有生成應(yīng)用程式的 Python 程式碼：

from flask import Flask, render_template, request
from search_engine import query_prep, OkapiBM25
import pickle

app = Flask(__name__)

@app.route('/')
def results():
    return render_template('index.html')

@app.route('/', methods=['POST'])
def process_res():
    with open("inv_index.pickle", "rb") as file:
        inv_ind = pickle.load(file)
    user_search_query = request.form['msg']
    queries = {'q': query_prep(user_search_query)}
    ranking = OkapiBM25(inv_ind, queries)['q']
    seen = set()

    newRes= []
    myDict = pickle.load(open('text_summaries.pickle','rb'))
    
    for r in ranking:
        newRes.append((r[1], myDict[r[1]]))

    return render_template('index.html', search_results_list = newRes,
                                          user_query=user_search_query)

if __name__ == "__main__":
    app.run(debug=True)

程式碼使用語(yǔ)料庫(kù)的倒排索引開(kāi)啟一個(gè) pickle 文件，然後針對(duì)該索引執(zhí)行查詢，對(duì)結(jié)果進(jìn)行排名並傳回它們。每個(gè)搜尋結(jié)果下方也顯示每個(gè)維基百科文章的文字摘要。如果您想嘗試一下並看看我正在嘗試做什麼，這裡是網(wǎng)頁(yè)的部署版本：https://searchenginecapstone.herokuapp.com/

如果您搜尋“健康”，您會(huì)看到一頁(yè)上有 442 個(gè)結(jié)果。我想調(diào)整程式碼（我認(rèn)為這將僅在 HTML 部分中完成 - 但不完全確定）以將結(jié)果分成 10-20 個(gè)區(qū)塊。頁(yè)面右下角已經(jīng)有一個(gè)用於頁(yè)面的按鈕，但目前它沒(méi)有任何作用。我感謝您提供的任何幫助或想法。如果您還需要從編碼方面查看其他內(nèi)容來(lái)回答這個(gè)問(wèn)題，請(qǐng)告訴我。

我發(fā)現(xiàn) Flask 對(duì) paginate() 方法的分頁(yè)有本機(jī)支持，因此如果我使用以下內(nèi)容修改 render_template() 中傳回的內(nèi)容：

from flask_paginate import Pagination, get_page_parameter

    def process_res():
    with open("inv_index.pickle", "rb") as file:
        inv_ind = pickle.load(file)
    user_search_query = request.form['msg']
    queries = {'q': query_prep(user_search_query)}
    ranking = OkapiBM25(inv_ind, queries)['q']
    seen = set()

    newRes= []
    myDict = pickle.load(open('text_summaries.pickle','rb'))
    
    for r in ranking:
        newRes.append((r[1], myDict[r[1]]))

    page = request.args.get(get_page_parameter(), type=int, default=1)
    pagination = Pagination(page=page, total=len(newRes), search=user_search_query, record_name='Search Results')
    return render_template('index.html', search_results_list = newRes,
                                          user_query=user_search_query,
                                          Pagination = pagination)

該頁(yè)面似乎可以工作（沒(méi)有出現(xiàn)分頁(yè)），所以我想我必須更新索引文件以反映分頁(yè)更改，但我不知道如何。

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