让评论指定为某文章评论

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普通评论

从Article中查找普通评论

M

from django.db import models# Create your models here.class People(models.Model):    name = models.CharField(null=True, blank=True,max_length=200)    job = models.CharField(null=True, blank=True, max_length=200)    def __str__(self):        return self.nameclass Article(models.Model):    headline = models.CharField(null=True, blank=True,max_length=500)#新增    content = models.TextField(null=True, blank=True)#新增    TAG_CHOICES = (        ('tech', 'Tech'),        ('life','Life'),    )    tag = models.CharField(null=True, blank=True, max_length=5, choices=TAG_CHOICES)    def __str__(self):        return self.headlineclass Comment(models.Model):    name = models.CharField(null=True, blank=True, max_length=50)    comment = models.TextField()    belong_to = models.ForeignKey(to=Article, related_name='under_comments', null=True, blank=True)    #归属=模型.外键（归属于Article，从外部查询叫under_comments，没有是True，空格是True）【article.unser_comment.all】    def __str__(self):        return self.comment

Django后台不显示创建的模型的解决办法
在admin.py中注册模型

from django.contrib import adminfrom firstapp.models import People, Article, Comment# Register your models here.admin.site.register(People)admin.site.register(Article)admin.site.register(Comment)

MM

python manage.py makemigrations
python manage.py migrate

评论归属在文章下【后台管理页面操作】

这里写图片描述

V

from django.shortcuts import render, HttpResponse, redirectfrom firstapp.models import Article, Commentfrom django.template import Context, Templatefrom firstapp.form import CommentForm# Create your views here.def index(request):    print(request)    print('==='*30)    print(dir(request))    print('==='*30)    print(type(request))    queryset = request.GET.get('tag')    if queryset:        article_list = Aritcle.objects.filter(tag=queryset)    else:        article_list = Article.objects.all()    context = {}    context['article_list'] = article_list    index_page = render(request, 'first_web_2.html', context)    return index_pagedef detail(request, page_num):    if request.method == 'GET':        form = CommentForm    if request.method == 'POST':        form = CommentForm(request.POST)        if form.is_valid():            name = form.cleaned_data['name']            comment = form.cleaned_data['comment']            a = Article.objects.get(id=page_num)            #实例化id=page_num的文章            c = Comment(name=name, comment=comment, belong_to=a)            #实例化评论（归属于文章a）            c.save()            return redirect(to='detail', page_num=page_num)            #重定向到page_num页的文章    context = {}    #comment_list = Comment.objects.all()#不需要    article = Article.objects.get(id=page_num)    context['article'] = article    #context['comment_list'] = comment_list#不需要    context['form'] = form    return render(request, 'article_detail.html', context)

T

从实例化article中查找comment（对外叫under_comments）

{% for comment in article.under_comments.all %}

<!DOCTYPE html>{% load staticfiles %}<html><head>    <meta charset="UTF-8">    <title>Title</title>    <link rel="stylesheet" href="{% static 'css/semantic.css' %}" media="screen" title="no title" charset="utf-8">    <link href="https://fonts.googleapis.com/css?family=0swald|Raleway" rel="stylesheet">    <style type="text/css">        .ui.segment.container{            width:700px;        }        p {            font-family:'Raleway', sans-serif;            font-size:18px;        }        body {            background: url({% static 'images/star_banner.jpg' %});            background-size:cover;            background-repeat:no-repeat;            background-attachment:fixed        }    </style></head><body>    <div class="ui image">        <img src="" alt="" />    </div>    <div class="ui segment padded container">        <h1 class="ui header" style="font-family:'Oswald',sans-serif;font-size: 40px">            {{ article.headline }}        </h1>        <p>            {{ article.content }}        </p>    </div>    <div class="ui segment container" style="width:700px;">        <h3 class="ui header" style="font-family: 'Oswald', sans-serif;">Comments</h3><!--标题Comment-->        <div class="ui comments"><!--评论-->            {% for comment in article.under_comments.all %}                <div class="comment">                    <div class="avatar">                        <img src="http://semantic-ui.com/images/avatar/small/matt.jpg" alt="" />                    </div>                    <div class="content">                        <a href="#" class="author">{{ comment.name }}</a>                        <div class="metadata">                            <div class="date">2 days ago</div>                        </div>                        <p class="text" style="font-family:'Raleway', sans-serif;">                            {{ comment.comment }}                        </p>                    </div>                </div>            {% endfor %}        </div>        <div class="ui divider"></div><!--分割线评论-->        <form class="ui error tiny form" method="post">            {% if form.errors %}                <div class="ui error message">                    {{ form.errors }}                </div>                {% for field in form %}                    <div class="{{ field.errors|yesno:'error, '}} field"><!--#依次判断表格中的field是否有error-->                    {{ field.label }}                    {{ field }}                    </div>                {% endfor %}            {% else %}                {% for field in form %}                    <div class="field">                        {{ field.label }}                        {{ field }}                    </div>                {% endfor %}            {% endif %}            {% csrf_token %}<!--Django防跨站"{%csrf_token%}"标签-->            <button type="submit" class="ui blue button">Click</button>        </form>    </div></body></html>

优秀评论

M

from django.db import models# Create your models here.class People(models.Model):    name = models.CharField(null=True, blank=True,max_length=200)    job = models.CharField(null=True, blank=True, max_length=200)    def __str__(self):        return self.nameclass Article(models.Model):    headline = models.CharField(null=True, blank=True,max_length=500)#新增    content = models.TextField(null=True, blank=True)#新增    TAG_CHOICES = (        ('tech', 'Tech'),        ('life','Life'),    )    tag = models.CharField(null=True, blank=True, max_length=5, choices=TAG_CHOICES)    def __str__(self):        return self.headlineclass Comment(models.Model):    name = models.CharField(null=True, blank=True, max_length=50)    comment = models.TextField()    belong_to = models.ForeignKey(to=Article, related_name='under_comments', null=True, blank=True)    best_comment = models.BooleanField(default=False)    #默认都不是最优评论，最优评论需手动选择    def __str__(self):        return self.comment

MM

python manage.py makemigrations
python manage.py migrate

后台管理最优评论

这里写图片描述

V

from django.shortcuts import render, HttpResponse, redirectfrom firstapp.models import Article, Commentfrom django.template import Context, Templatefrom firstapp.form import CommentForm# Create your views here.def index(request):    print(request)    print('==='*30)    print(dir(request))    print('==='*30)    print(type(request))    queryset = request.GET.get('tag')    if queryset:        article_list = Aritcle.objects.filter(tag=queryset)    else:        article_list = Article.objects.all()    context = {}    context['article_list'] = article_list    index_page = render(request, 'first_web_2.html', context)    return index_pagedef detail(request, page_num):    if request.method == 'GET':        form = CommentForm    if request.method == 'POST':        form = CommentForm(request.POST)        if form.is_valid():            name = form.cleaned_data['name']            comment = form.cleaned_data['comment']            a = Article.objects.get(id=page_num)            c = Comment(name=name, comment=comment, belong_to=a)            c.save()            return redirect(to='detail', page_num=page_num)    context = {}    #comment_list = Comment.objects.all()    article = Article.objects.get(id=page_num)    #实例化指定页面的article    best_comment = Comment.objects.filter(best_comment=True, belong_to=article)    #在评论中筛选评论属性best_comment为True，从属于article的的评论    #best_comment=models.BooleanField(default=True)【勾选为best_comment的评论】<=============等价于============>best_comment=True    context['article'] = article    #context['comment_list'] = comment_list    context['form'] = form    if best_comment:        context['best_comment'] = best_comment[0]    #如果有best_comment，则挑选第一个best_comment    return render(request, 'article_detail.html', context)

T

<!DOCTYPE html>{% load staticfiles %}<html><head>    <meta charset="UTF-8">    <title>Title</title>    <link rel="stylesheet" href="{% static 'css/semantic.css' %}" media="screen" title="no title" charset="utf-8">    <link href="https://fonts.googleapis.com/css?family=0swald|Raleway" rel="stylesheet">    <style type="text/css">        .ui.segment.container{            width:700px;        }        p {            font-family:'Raleway', sans-serif;            font-size:18px;        }        body {            background: url({% static 'images/star_banner.jpg' %});            background-size:cover;            background-repeat:no-repeat;            background-attachment:fixed        }    </style></head><body>    <div class="ui image">        <img src="" alt="" />    </div>    <div class="ui segment padded container">        <h1 class="ui header" style="font-family:'Oswald',sans-serif;font-size: 40px">            {{ article.headline }}        </h1>        <p>            {{ article.content }}        </p>    </div>    <div class="ui segment container" style="width:700px;">        <h3 class="ui header" style="font-family: 'Oswald', sans-serif;">Comments</h3><!--标题Comment-->        <div class="ui comments"><!--评论-->            {% if best_comment %}            <div class="ui mini red left ribbon label">                <i class="icon fire"></i>                BEST            </div>            <div class="best comment">                <div class="avatar">                    <img src="http://semantic-ui.com/images/avatar/small/matt.jpg " alt="" />                </div>                <div class="content">                    <a href="#" class="author">{{ best_comment.name }}</a>                    <div class="metadata">                        <div class="date">2 days ago</div>                    </div>                    <p class="text" style="font-family: 'Raleway', sans-serif;">                        {{ best_comment.comment }}                    </p>                </div>            </div>            {% endif %}            {% for comment in article.under_comments.all %}                <div class="comment">                    <div class="avatar">                        <img src="http://semantic-ui.com/images/avatar/small/matt.jpg" alt="" />                    </div>                    <div class="content">                        <a href="#" class="author">{{ comment.name }}</a>                        <div class="metadata">                            <div class="date">2 days ago</div>                        </div>                        <p class="text" style="font-family:'Raleway', sans-serif;">                            {{ comment.comment }}                        </p>                    </div>                </div>            {% endfor %}        </div>        <div class="ui divider"></div><!--分割线评论-->        <form class="ui error tiny form" method="post">            {% if form.errors %}                <div class="ui error message">                    {{ form.errors }}                </div>                {% for field in form %}                    <div class="{{ field.errors|yesno:'error, '}} field"><!--#依次判断表格中的field是否有error-->                    {{ field.label }}                    {{ field }}                    </div>                {% endfor %}            {% else %}                {% for field in form %}                    <div class="field">                        {{ field.label }}                        {{ field }}                    </div>                {% endfor %}            {% endif %}            {% csrf_token %}<!--Django防跨站"{%csrf_token%}"标签-->            <button type="submit" class="ui blue button">Click</button>        </form>    </div></body></html>

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