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這篇文章主要講解了使用Django搭建網(wǎng)站實(shí)現(xiàn)商品分頁功能的方法,內(nèi)容清晰明了,對(duì)此有興趣的小伙伴可以學(xué)習(xí)一下,相信大家閱讀完之后會(huì)有幫助。
裝好Django,寫好index.html后,可以展示網(wǎng)頁了。但是這只是靜態(tài)頁面,沒有關(guān)聯(lián)數(shù)據(jù)庫,也不能分頁展示商品信息。本節(jié)連接mongodb數(shù)據(jù)庫(事先已準(zhǔn)備好數(shù)據(jù)),從中取出幾十條商品信息,每頁展示4個(gè)商品信息,并具有翻頁功能,做好的頁面效果大致如下:
開始代碼:
1、在settings.py(項(xiàng)目名稱目錄下)中,增加2段代碼,分別是static文件夾位置和連接mongodb的代碼:
STATIC_URL = '/static/' STATICFILES_DIRS = (os.path.join(BASE_DIR,'static'),) # 指定static文件夾位置 from mongoengine import connect connect('ganji', host='127.0.0.1', port=27017) # 連接ganji數(shù)據(jù)庫
2、在models.py(本APP目錄下)中,代碼:
from django.db import models from mongoengine import * # Create your models here. # 創(chuàng)建帖子信息類,繼承自mongoengine的文件類<br data-filtered="filtered">class PostInfo(Document): area = ListField(StringField()) title = StringField() cates = ListField(StringField()) price = StringField() pub_date = StringField() # 數(shù)據(jù)集里面所有的字段都要有,就算不用也得列出來 url = StringField() look = StringField() time = IntField() cates2 = StringField() meta = {'collection':'goods_info'} # 定位好是goods_info數(shù)據(jù)集
3、在views.py(本APP目錄下)中,代碼:
from django.shortcuts import render from sample_blog.models import PostInfo # 導(dǎo)入已寫好的數(shù)據(jù)結(jié)構(gòu) from django.core.paginator import Paginator # 導(dǎo)入分頁器 # Create your views here. def index(request): limit = 4 # 每頁放幾條帖子 all_post_info = PostInfo.objects[:20] # 取前20個(gè)帖子的數(shù)據(jù) paginatior = Paginator(all_post_info, limit) # 用分頁器分頁 page_num = request.GET.get('page', 1) # 取request中的頁碼,取不到就為1 loaded = paginatior.page(page_num) # 取page_num那一頁的數(shù)據(jù),一般是4條 context = { # 首條固定的帖子信息 'title': '三星 A5 白色', 'des': '【圖】三星 A5 白色 沒有打開過 - 朝陽望京臺(tái)式機(jī)/配件 - 北京58同城', 'price': '1500', 'area': ["朝陽", "望京"], 'tag1': "北京二手市場", 'tag2': "北京二手臺(tái)式機(jī)/配件", # 每頁更新的帖子信息 'one_page_post': loaded } return render(request, 'index.html',context)
4、修改index.html文件,主要修改了有文字標(biāo)注的部分:
<div class="posts"> <h2 class="content-subhead">Pinned Post</h2> <!-- A single blog post --> <section class="post"> <header class="post-header"> <img class="post-avatar" alt="Tilo Mitra's avatar" height="48" width="48" src="{% static 'img/common/tilo-avatar.png' %}"> <!-- 修改了{(lán){title}}等 --> <h3 class="post-title">{{ title }}</h3> <p class="post-meta"> 地區(qū) <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="post-author">{{ area }}</a> under <a class="post-category post-category-design" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{{ tag1 }}</a> <a class="post-category post-category-pure" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{{tag2}}</a> </p> </header> <div class="post-description"> <p> {{ des }}|價(jià)格:{{ price }} </p> </div> </section> </div> <div class="posts"> <h2 class="content-subhead">Recent Posts</h2><!-- 增加for循環(huán),將one_page_post值帶入 --> {% for item in one_page_post %} <section class="post"> <header class="post-header"> <img class="post-avatar" alt="Eric Ferraiuolo's avatar" height="48" width="48" src="{% static 'img/common/ericf-avatar.png' %}"> <h3 class="post-title">{{ item.title }}</h3> <p class="post-meta"> 地區(qū) <a class="post-author" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{{ item.area }}</a>分類<!-- 再增加一個(gè)for循環(huán),把cates里的元素都展示出來 --> {% for cate in item.cates %} <a class="post-category post-category-pure" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{{ cate }}</a> {% endfor %} </p> </header> <div class="post-description"> <p> {{ item.title }}|價(jià)格:{{ item.price }} </p> </div> </section> {% endfor %} </div> <!-- 增加本段div,實(shí)現(xiàn)頁面底部可翻頁 --> <div align="center"> {% if one_page_post.has_previous %} <a href="?page={{ one_page_post.previous_page_number }}" rel="external nofollow" >< Pre</a> {% endif %} <span> {{ one_page_post.number }} of {{ one_page_post.paginator.num_pages }} </span> {% if one_page_post.has_next %} <a href="?page={{ one_page_post.next_page_number }}" rel="external nofollow" >Next ></a> {% endif %} </div>
5、附上urls.py(項(xiàng)目名稱目錄下)文件,本節(jié)中并沒有修改,但也備注上:
from django.contrib import admin from django.urls import path from sample_blog.views import index urlpatterns = [ path('admin/', admin.site.urls), path('index/', index), ]
以上步驟完成后,啟動(dòng)服務(wù)(python manage.py runserver),訪問http://127.0.0.1:8000/index/即可看到效果。
看完上述內(nèi)容,是不是對(duì)使用Django搭建網(wǎng)站實(shí)現(xiàn)商品分頁功能的方法有進(jìn)一步的了解,如果還想學(xué)習(xí)更多內(nèi)容,歡迎關(guān)注億速云行業(yè)資訊頻道。
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