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。

​