搭建本身的博客（九）：使用shell模式批量添加博客文章並增長分頁功能

時間 2019-12-11

標籤搭建本身博客使用 shell 模式批量添加文章增長分頁功能欄目 Unix 简体版

原文原文鏈接

想作個博客分頁功能，可是沒有太多的文章。因此使用shell命令行建立多篇文章。css

一、打開pycharm下的terminal終端html

python manage.py shell  # 打開python終端

導入模型python

from blog.models import Blog
from django.contrib.auth.models import User
from blog.models import BlogType

批量建立：web

>>> blog.author=user
>>> blog.blog_type=blogtype
>>> blog.content="shell第一篇中的內容"
>>> blog.save()
>>> for i in range(1,51):
...     blog=Blog()
...     blog.author=user
...     blog.blog_type=blogtype
...     blog.content="shell 下第{}篇內容".format(i)
...     blog.title="shell 下第{}篇".format(i)
...     blog.save()

這樣就批量建立了50篇內容。shell

內容多了就須要添加分頁的功能。django

一、變動的內容ssh

二、上代碼ide

{% extends 'base.html' %}
{% load staticfiles %}
{# 標題 #}
{% block title %}
    felix Blog
{% endblock %}

{% block header_extends %}
    <link rel="stylesheet" href="{% static 'blog/blog.css' %}">
    <link rel="stylesheet" href="{% static 'fontawesome-free-5.5.0-web/css/all.min.css' %}">
{% endblock %}

{# 內容#}
{% block content %}
    <div class="container">
        <div class="row">
            <div class="col-md-8">
                <div class="card" style="">
                    <div class="card-header"><h5 class="card-title">{% block blog_type_title %}博客列表（一共有
                        {{ page_of_blogs.paginator.count }}篇博客）{% endblock %}</h5></div>
                    <div class="card-body">
                        {% for blog in page_of_blogs.object_list %}
                            <div class="blog">
                                <h3><a href="{% url 'blog_detail' blog.pk %}">{{ blog.title }}</a></h3>
                                <div class="blog-info">
                                    <p>
                                        {# 添加圖標 #}
                                        <i class="fas fa-tag"></i>
                                        <a href="{% url 'blogs_with_type' blog.blog_type.pk %}">
                                            {{ blog.blog_type }}
                                        </a>
                                        <i class="far fa-clock  "></i>
                                        {{ blog.created_time|date:"Y-m-d" }}
                                    <p>
                                </div>
                                <p>{{ blog.content|truncatechars:30 }}</p>
                            </div>
                        {% empty %}
                            <div class="blog">
                                <h3>--暫無博客，敬請期待--</h3>
                            </div>
                        {% endfor %}
                    </div>


                    {# 分頁 #}
                    <nav aria-label="Page navigation">
                        <ul class="pagination">
                            {# 上一頁 #}
                            {% if page_of_blogs.has_previous %}
                                <li class="page-item"><a class="page-link"
                                                         href="?page={{ page_of_blogs.previous_page_number }}">上一頁</a>
                                </li>
                            {% else %}
                                <li class="page-item disabled"><a class="page-link" href="#">上一頁</a></li>
                            {% endif %}
                            {# 所有頁碼 #}
                            {% for page_num in page_of_blogs.paginator.page_range %}
                                <li class="page-item"><a class="page-link"
                                                         href="?page={{ page_num }}">{{ page_num }}</a></li>
                            {% endfor %}
                            {# 下一頁 #}
                            {% if page_of_blogs.has_next %}
                                <li class="page-item"><a class="page-link"
                                                         href="?page={{ page_of_blogs.next_page_number }}">下一頁</a></li>
                            {% else %}
                                <li class="page-item disabled"><a class="page-link" href="#">下一頁</a></li>
                            {% endif %}
                        </ul>
                    </nav>

                </div>
            </div>
            <div class="col-md-4">
                <div class="card" style="">
                    <div class="card-header"><h5 class="card-title">博客分類</h5></div>
                    <div class="card-body">
                        <ul class="blog-types">
                            {% for blog_type in blog_types %}
                                <li><a href="{% url 'blogs_with_type' blog_type.pk %}">{{ blog_type.type_name }}</a>
                                </li>
                            {% empty %}
                                <li>暫無分類</li>
                            {% endfor %}
                        </ul>
                    </div>
                </div>
            </div>
        </div>
    </div>
{% endblock %}

{% block js %}
    <script>
        $(".nav-blog").addClass("active").siblings().removeClass("active");
    </script>
{% endblock %}

blog_list.html

from django.db import models
from django.contrib.auth.models import User


# Create your models here.

# 博客分類
class BlogType(models.Model):
    type_name = models.CharField(max_length=15)  # 博客分類名稱

    def __str__(self):  # 顯示標籤名
        return self.type_name


# 博客
class Blog(models.Model):
    title = models.CharField(max_length=50)  # 博客標題
    blog_type = models.ForeignKey(BlogType, on_delete=models.DO_NOTHING)  # 博客分類
    content = models.TextField()  # 博客內容
    author = models.ForeignKey(User, on_delete=models.DO_NOTHING)  # 博客做者
    created_time = models.DateTimeField(auto_now_add=True)  # 博客建立時間
    last_updated_time = models.DateTimeField(auto_now=True)  # 博客更新事件

    def __str__(self):  # 顯示標題名
        return "<Blog:{}>".format(self.title)

    class Meta:
        ordering = ['-created_time']  # 定義排序規則，按照建立時間倒序

models.py

from django.shortcuts import render_to_response, get_object_or_404
from .models import Blog, BlogType
from django.core.paginator import Paginator


# Create your views here.

# 博客列表
def blog_list(requests):
    # 分頁
    blogs_all_list = Blog.objects.all()  # 獲取所有博客
    paginator = Paginator(blogs_all_list, 10)  # 第一個參數是所有內容，第二個是每頁多少
    page_num = requests.GET.get('page', 1)  # 獲取url的頁面參數（get請求）
    page_of_blogs = paginator.get_page(page_num)  # 從分頁器中獲取指定頁碼的內容

    context = {
        'page_of_blogs': page_of_blogs,
        'blog_types': BlogType.objects.all(),
    }
    return render_to_response('blog/blog_list.html', context)


# 博客詳情
def blog_detail(requests, blog_pk):
    context = {
        'blog': get_object_or_404(Blog, pk=blog_pk)
    }

    return render_to_response('blog/blog_detail.html', context)


def blogs_with_type(requests, blog_type_pk):
    blog_type = get_object_or_404(BlogType, pk=blog_type_pk)
    context = {
        'blogs': Blog.objects.filter(blog_type=blog_type),
        'blog_type': blog_type,
        'blog_types': BlogType.objects.all(),
    }
    return render_to_response('blog/blog_with_type.html', context)

views.py

三、python內置分頁器url

django的內置分頁器爲Paginatorspa

用法：

>>> from blog.models import Blog
>>> from django.core.paginator import Paginator
>>> paginator=Paginator(Blog.objects.all(),10)
>>> pages=paginator.get_page(1)
>>> dir(pages)
['__abstractmethods__', '__class__', '__contains__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__setattr__', '__sizeof__', '__slots__', '__str__', '__subclasshook__', '__weakref__', '_abc_cache', '_abc_negative_cache', '_abc_negative_cache_version', '_abc_registry', 'count', 'end_index', 'has_next', 'has_other_pages', 'has_previous', 'index', 'next_page_number', 'number', 'object_list', 'paginator', 'previous_page_number', 'start_index']
>>>