基于django的个人博客网站建立（二）
前言
今天主要完成后台管理员登录的状态以及关于文章在后台的处理
具体内容
首先接上一次内容，昨天只是完成了一个登录的跳转，其他信息并没有保存到session中，今天先完善一下
在用户登录时，先设置了一下session
request.session['is_login'] = True
request.session['email'] = value_dict['email']
request.session['username'] = obj.userName
然后再建立装饰器来对一些需要登录的请求做限制
def auth(func):
def inner(request, *args, **kwargs):
is_login = request.session.get('is_login')
if is_login:
return func(request, *args, **kwargs)
else:
return redirect('/backend/login')
return inner
接下来就是对文章在后台的管理的添加
首先当然是建表：
class ArticleType(models.Model):
name = models.CharField(max_length=128,unique=True)
class Article(models.Model):
title = models.CharField(max_length=128)
markdownContent = models.TextField(default='')
htmlContent = models.TextField()
creationTime = models.DateTimeField(auto_now_add=True)
class ArticleToType(models.Model):
article = models.ForeignKey(to=Article,on_delete=models.CASCADE)
type = models.ForeignKey(to=ArticleType,on_delete=models.CASCADE)
class Meta:
unique_together = ('article', 'type',)
这里建立了3张表，表示文章与类型，文章内容存了两种，一种是markdown，一种是html格式
然后要完成的是对文章类型的管理，主要是显示文章类型，添加文章类型与删除文章类型
我先把完成的网页放出来：
对于页面的返回的视图函数当然要查询所有类别：
@auth
def article_type(request):
if request.method == 'GET':
all_type = models.ArticleType.objects.all()
return render(request,'backend/article_type.html',{"all_type":all_type})
然后是添加类别：
@auth
def add_article_type(request):
if request.method == 'POST':
addType = request.POST.get('addType')
if addType:
print(addType)
count = models.ArticleType.objects.filter(name=addType).count()
if count:
messages.error(request, '添加的类别已经存在')
else:
models.ArticleType.objects.create(name=addType)
else:
messages.error(request, '添加的类别不能为空')
return redirect('/backend/article_type')
这里使用了django中的message，它和flask中的flash类似，可以用来显示错误信息
然后是删除类别;
@auth
def delete_article_type(request):
if request.method == 'POST':
delete_type_id = request.POST.get('delete_type_id')
if delete_type_id:
obj = models.ArticleType.objects.filter(id=delete_type_id).first()
if obj:
obj.delete()
else:
messages.error(request, '删除的类别不存在')
else:
messages.error(request, '删除的类别不能为空')
return redirect('/backend/article_type')
具体的页面借助了模板，也就不再解释了
{% extends 'backend/base.html' %}
{% block link %}
<!-- Bootstrap Markdown -->
{% endblock %}
{% block content %}
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1>
文章类别
</h1>
<ol class="breadcrumb">
<li class="breadcrumb-item"><a href="#">我的博客后台</a></li>
<li class="breadcrumb-item active">文章类别</li>
</ol>
</section>
<!-- Main content -->
<section class="content">
<div class="row">
<div class="col-lg-12">
<div class="box">
<div class="box-header with-border">
<h3 class="box-title">所有类别</h3>
</div>
<!-- /.box-header -->
<div style="height: auto" class="box-body">
<div class="table-responsive">
<table id="articletypelist" class="table table-hover no-wrap dataTable" data-page-size="10" role="grid" aria-describedby="articletypelist_info">
<thead>
<tr role="row"><th class="sorting_asc" tabindex="0" aria-controls="articletypelist" rowspan="1" colspan="1" aria-sort="ascending" aria-label="No: activate to sort column descending">Id</th><th class="sorting" tabindex="0" aria-controls="articletypelist" rowspan="1" colspan="1" aria-label="Name: activate to sort column ascending">Type</th><th class="sorting" tabindex="0" aria-controls="articletypelist" rowspan="1" colspan="1" aria-label="Action: activate to sort column ascending">Action</th></tr>
</thead>
<tbody>
{% for type in all_type %}
<tr role="row" class="odd">
<td class="sorting_1">{{ type.id }}</td>
<td>{{ type.name }}</td>
<td>
<form action="/backend/delete_article_type/" method="post">
{% csrf_token %}
<input name="delete_type_id" style="display: none" type="text" value="{{ type.id }}">
<button type="submit" class="btn btn-sm btn-danger-outline" data-toggle="tooltip" data-original-title="Delete"><i class="ti-trash" aria-hidden="true"></i></button>
</form>
</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
<div class="box">
<div class="box-header with-border">
<h3 class="box-title">添加类别</h3>
</div>
<!-- /.box-header -->
<div style="height: auto" class="box-body">
<form method="post" action="/backend/add_article_type/">
<input name="addType" type="text" class="form-control" placeholder="输入类别">
<button type="submit" class="btn btn-info margin-top-10">添加</button>
{% csrf_token %}
</form>
</div>
</div>
<!-- /.box -->
</div>
</div>
</section>
<!-- /.content -->
</div>
{% endblock %}
{% block script %}
<script>
$('#article_type').addClass('active')
</script>
{% endblock %}
接下来就是文章的添加：
这里用的是markdown编辑器，可以预览
在后台先pip安装markdown，用于对markdown到html的转换
页面的视图函数为;
@auth
def write_article(request):
if request.method == 'GET':
all_type = models.ArticleType.objects.all()
return render(request, 'backend/write_article.html',{'all_type':all_type})
if request.method == 'POST':
markdown_content = request.POST.get('content')
html_content = markdown(markdown_content)
type_list = request.POST.getlist('article_type')
type_list = [int(i) for i in type_list]
title = request.POST.get('title')
type_obj_list = []
for i in type_list:
type_obj = models.ArticleType.objects.filter(id=i).first()
type_obj_list.append(type_obj)
if html_content and type and title:
obj = models.Article.objects.create(title=title,markdownContent=markdown_content,htmlContent=html_content)
for i in type_obj_list:
models.ArticleToType.objects.create(type=i,article=obj)
return redirect('/backend/write_article')
else:
messages.error('文章或类别或标题不能为空')
return redirect('/backend/write_article')
前端代码为：
{% extends 'backend/base.html' %}
{% block link %}
<!-- Bootstrap Markdown -->
<link rel="stylesheet" href="/static/assets/backend/vendor_components/bootstrap-markdown-master/css/bootstrap-markdown.css">
{% endblock %}
{% block content %}
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1>
写文章
</h1>
<ol class="breadcrumb">
<li class="breadcrumb-item"><a href="#">我的博客后台</a></li>
<li class="breadcrumb-item active">写文章</li>
</ol>
</section>
<!-- Main content -->
<section class="content">
<div class="row">
<div class="col-lg-12">
<form action="/backend/write_article/" method="post">
<div class="box">
<div class="box-header with-border">
<input name="title" type="text" class="form-control" placeholder="输入标题">
</div>
<!-- /.box-header -->
<div style="height: auto" class="box-body">
<div class="example">
<textarea style="height: 500px" name="content" data-provide="markdown" data-iconlibrary="fa"></textarea>
</div>
</div>
<!-- /.box-body -->
</div>
<div class="box">
<div class="box-header with-border">
<h3 class="box-title">选择类别</h3>
</div>
<!-- /.box-header -->
<div style="height: auto" class="box-body">
<div class="form-group validate">
<h5>选择分类 <span class="text-danger">*</span></h5>
<div class="controls">
{% for type in all_type %}
<fieldset>
<label class="custom-control custom-checkbox">
<input type="checkbox" value="{{ type.id }}" name="article_type" class="custom-control-input" aria-invalid="false"> <span class="custom-control-indicator"></span> <span class="custom-control-description">{{ type.name }}</span> </label>
</fieldset>
{% endfor %}
</div>
</div>
<button id="submit" type="submit" class="btn btn-info margin-top-10">提交</button>
{% csrf_token %}
</div>
</form>
<!-- /.box -->
</div>
</div>
</section>
<!-- /.content -->
</div>
{% endblock %}
{% block script %}
<script>
$('#write_article').addClass('active')
$('#submit').click(function () {
var cbs = document.getElementsByName("article_type");
var checkNum = 0;
for (var i = 0; i < cbs.length; i++) {
if (cbs[i].checked) {
checkNum++;
}
}
if (checkNum == 0) {
alert('至少选择一个类别');
return false;
}
})
</script>
<!-- Bootstrap markdown -->
<script src="/static/assets/backend/vendor_components/bootstrap-markdown-master/js/bootstrap-markdown.js"></script>
<!-- marked-->
<script src="/static/assets/backend/vendor_components/marked/marked.js"></script>
<!-- to markdown -->
<script src="/static/assets/backend/vendor_components/to-markdown/to-markdown.js"></script>
{% endblock %}
最后是查看文章，这个和文章分类的类似，用一个表格展示
视图函数为;
@auth
def view_article(request):
if request.method == 'GET':
all_article = models.Article.objects.all().order_by('id').reverse()
return render(request,'backend/view_article.html',{'all_article':all_article})
点击右边的按钮是具体查看文章，也就是可以再次编辑：
点击查看按钮的视图函数为：
@auth
def view_article_detail(request):
if request.method == 'GET':
view_article_id = request.GET.get('view_article_id')
article = models.Article.objects.filter(id = int(view_article_id)).first()
return render(request,'backend/view_article_detail.html',{'article':article})
点击保存按钮的视图函数为：
@auth
def save_article(request):
if request.method == 'POST':
markdown_content = request.POST.get('content')
html_content = markdown(markdown_content)
title = request.POST.get('title')
article_id = request.POST.get('article_id')
article_obj = models.Article.objects.filter(id=int(article_id)).first()
article_obj.title = title
article_obj.markdownContent = markdown_content
article_obj.htmlContent = html_content
article_obj.save()
return redirect('/backend/view_article')
这个页面在前端其实就是把数据库该文章的内容填充进去：
{% extends 'backend/base.html' %}
{% block link %}
<!-- Bootstrap Markdown -->
<link rel="stylesheet" href="/static/assets/backend/vendor_components/bootstrap-markdown-master/css/bootstrap-markdown.css">
{% endblock %}
{% block content %}
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1>
修改文章
</h1>
<ol class="breadcrumb">
<li class="breadcrumb-item"><a href="#">我的博客后台</a></li>
<li class="breadcrumb-item active">查看文章</li>
<li class="breadcrumb-item active">修改文章</li>
</ol>
</section>
<!-- Main content -->
<section class="content">
<div class="row">
<div class="col-lg-12">
<form action="/backend/save_article/" method="post">
<div class="box">
<div class="box-header with-border">
<input value="{{ article.title }}" name="title" type="text" class="form-control" placeholder="输入标题">
</div>
<!-- /.box-header -->
<div style="height: auto" class="box-body">
<div class="example">
<textarea style="height: 500px" name="content" data-provide="markdown" data-iconlibrary="fa">{{ article.markdownContent }}</textarea>
<input type="text" style="display: none" name="article_id" value="{{ article.id }}">
</div>
<button id="submit" type="submit" class="btn btn-info margin-top-10">保存</button>
{% csrf_token %}
</div>
<!-- /.box-body -->
</div>
</form>
<!-- /.box -->
</div>
</div>
</section>
<!-- /.content -->
</div>
{% endblock %}
{% block script %}
<script>
$('#view_article').addClass('active')
</script>
<!-- Bootstrap markdown -->
<script src="/static/assets/backend/vendor_components/bootstrap-markdown-master/js/bootstrap-markdown.js"></script>
<!-- marked-->
<script src="/static/assets/backend/vendor_components/marked/marked.js"></script>
<!-- to markdown -->
<script src="/static/assets/backend/vendor_components/to-markdown/to-markdown.js"></script>
{% endblock %}
总结
这次基本上完成了个人博客文章在后台的管理，其实还是花了不少的时间，很多时间是对html页面的设置，修改，明天预计完成文章在前端页面的展示。
