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from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
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from django.shortcuts import render, redirect
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from django.http import Http404
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from index.models import *
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import time
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'''
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试图函数的commentView有1个函数参数，其中song_id是来自于URL的变量。URL的变量和视图函数的参数要一一对应，
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如果视图函数的参数与URL的变量对应不上，那么程序会抛出参数不相符的报错信息。
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'''
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def commentView(request, song_id):
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# 热搜歌曲
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search_song = Dynamic.objects.select_related('song').order_by('-dynamic_search').all()[:6]
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# 点评提交处理
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if request.method == 'POST':
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comment_text = request.POST.get('comment','')
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comment_user = request.user.username if request.user.username else '匿名用户'
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if comment_text:
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comment = Comment()
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comment.comment_text = comment_text
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comment.comment_user = comment_user
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comment.comment_date = time.strftime('%Y-%m-%d', time.localtime(time.time()))
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comment.song_id = song_id
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comment.save()
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return redirect('/comment/%s.html' %(str(song_id)))
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else:
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song_info = Song.objects.filter(song_id=song_id).first()
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# 歌曲不存在抛出404异常
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if not song_info:
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raise Http404
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comment_all = Comment.objects.filter(song_id=song_id).order_by('comment_date')
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song_name = song_info.song_name
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page = int(request.GET.get('page', 1))
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paginator = Paginator(comment_all, 2)
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try:
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contacts = paginator.page(page)
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except PageNotAnInteger:
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contacts = paginator.page(1)
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except EmptyPage:
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contacts = paginator.page(paginator.num_pages)
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return render(request, 'comment.html', locals()) |
