带分页功能的博客部分代码

Posted 2022-03-31 leiwenbin627

程序目录

models.py

from django.db import models

# Create your models here.
class Category(models.Model):
    caption_c=models.CharField(max_length=16)


# class ArticleType(models.Model):
#     caption_a=models.CharField(max_length=16)


class Article(models.Model):
    title=models.CharField(max_length=32)
    content=models.CharField(max_length=255)

    category=models.ForeignKey(Category,on_delete=models.CASCADE)
    # article_type=models.ForeignKey(ArticleType,on_delete=models.CASCADE)

    type_choice=(
        (1,‘Python‘),
        (2,‘OpenStack‘),
        (3,"Linux"),
    )
    article_type_id=models.IntegerField(choices=type_choice)

 

views.py

from django.contrib import admin
from django.urls import path
from app01 import views
from django.conf.urls import url
urlpatterns = [
    path(‘admin/‘, admin.site.urls),
    url(r‘^article-(?P<article_type_id>\\d+)-(?P<category_id>\\d+).html‘,views.article,name=‘article‘),
]

 

views.py

from django.shortcuts import render
from app01 import models
# Create your views here.
def article(request,*args,**kwargs):
    # print(request.path_info) #获取当前url
    # from django.urls import reverse
    # url=reverse(‘article‘,kwargs=kwargs)
    # print(url)
    # print(kwargs)  #‘article_type_id‘: ‘1‘, ‘category_id‘: ‘2‘

    condition=
    for k,v in kwargs.items():
        kwargs[k]=int(v)
        if v==‘0‘:
            pass
        else:
            condition[k]=v

    # article_type_list=models.ArticleType.objects.all()
    article_type_list=models.Article.type_choice
    category_list=models.Category.objects.all()
    # c=‘article_type_id‘: ‘1‘, ‘category_id‘: ‘2‘
    result= models.Article.objects.filter(**condition)
    return render(request,‘article.html‘,‘result‘:result,
                                          ‘article_type_list‘:article_type_list,
                                          ‘category_list‘:category_list,
                                          ‘arg_dict‘:kwargs)

 

自定义函数

templatetags--->filter.py

from django import template
from django.utils.safestring import mark_safe

register = template.Library()

@register.simple_tag
def filter_all(arg_dict,k):
    ‘‘‘
        % if arg_dict.article_type_id == 0 %
            <a class="active" href="/article-0- arg_dict.category_id .html">全部</a>
        % else %
            <a  href="/article-0- arg_dict.category_id .html">全部</a>
        % endif %
    ‘‘‘
    if k == ‘article_type_id‘:
        n1=arg_dict[‘article_type_id‘]
        n2=arg_dict[‘category_id‘]
        if n1 == 0:
            ret = ‘<a class="active" href="/article-0-%s.html">全部</a>‘ % n2
        else:
            ret = ‘<a href="/article-0-%s.html">全部</a>‘ % n2
    else:
        n1 = arg_dict[‘category_id‘]
        n2 = arg_dict[‘article_type_id‘]
        if n1 == 0:
            ret = ‘<a class="active" href="/article-%s-0.html">全部</a>‘ % n2
        else:
            ret = ‘<a href="/article-%s-0.html">全部</a>‘ % n2
    return mark_safe(ret)

@register.simple_tag
def filter_article_type(article_type_list,arg_dict):
    ‘‘‘
      % for row in article_type_list %
            % if row.id == arg_dict.article_type_id %
                <a  class="active" href="/article- row.id - arg_dict.category_id .html"> row.caption_a </a>
            % else %
                <a  href="/article- row.id - arg_dict.category_id .html"> row.caption_a </a>
            % endif %
        % endfor %
    ‘‘‘
    ret=[]
    for row in article_type_list:
        if row[0] == arg_dict[‘article_type_id‘]:
            temp=‘<a class="active" href="/article-%s-%s.html">%s</a>‘%(row[0],arg_dict[‘category_id‘],row[1])
        else:
            temp = ‘<a href="/article-%s-%s.html">%s</a>‘%(row[0], arg_dict[‘category_id‘], row[1])
        ret.append(temp)
    return  mark_safe(‘‘.join(ret))

@register.simple_tag
def filter_category_type(category_list,arg_dict):
    ‘‘‘
    % for row in category_list %
            % if row.id == arg_dict.category_id %
                <a class="active" href="/article- arg_dict.article_type_id - row.id .html"> row.caption_c </a>
            % else %
                <a href="/article- arg_dict.article_type_id - row.id .html"> row.caption_c </a>
            % endif %
        % endfor %
    :return:
    ‘‘‘
    let = []
    for row in category_list:
        if row.id == arg_dict[‘category_id‘]:
           lemp = ‘<a class="active" href="/article-%s-%s.html">%s</a>‘%(arg_dict[‘article_type_id‘],row.id,row.caption_c)
        else:
            lemp = ‘<a href="/article-%s-%s.html">%s</a>‘%(arg_dict[‘article_type_id‘],row.id,row.caption_c)
        let.append(lemp)
    return mark_safe(‘‘.join(let))

 

带自定义函数的模板

article.html

% load filter %

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .condition a
            display: inline-block;
            padding:3px 5px;
            border: 1px solid #dddddd;
            margin:5px 5px;

        
        .condition a.active
            background-color: brown;
        

    </style>
</head>
<body>
    <h1>过滤条件</h1>
    <div class="condition">
        <div>
        % filter_all  arg_dict  ‘article_type_id‘ %
        % filter_article_type article_type_list arg_dict %
        </div>

        <div>
        % filter_all  arg_dict  ‘category_id‘ %
        % filter_category_type category_list arg_dict %
        </div>
    </div>

    <h1>查询结果</h1>
    <ul>
    % for row in result %
        <li> row.id - row.title </li>
    % endfor %
    </ul>
</body>
</html>

 

 

不带自定义函数的模板

article_bak.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .condition a
            display: inline-block;
            padding:3px 5px;
            border: 1px solid #dddddd;
            margin:5px 5px;

        
        .condition a.active
            background-color: brown;
        

    </style>
</head>
<body>
    <h1>过滤条件</h1>
    <div class="condition">
        <div>
        % if arg_dict.article_type_id == 0 %
            <a class="active" href="/article-0- arg_dict.category_id .html">全部</a>
        % else %
            <a  href="/article-0- arg_dict.category_id .html">全部</a>
        % endif %
        % for row in article_type_list %
            % if row.id == arg_dict.article_type_id %
                <a  class="active" href="/article- row.id - arg_dict.category_id .html"> row.caption_a </a>
            % else %
                <a  href="/article- row.id - arg_dict.category_id .html"> row.caption_a </a>
            % endif %
        % endfor %
        </div>

        <div>
        % if arg_dict.category_id == 0 %
            <a class="active" href="/article- arg_dict.article_type_id -0.html">全部</a>
        % else %
            <a href="/article- arg_dict.article_type_id -0.html">全部</a>
        % endif %
        % for row in category_list %
            % if row.id == arg_dict.category_id %
                <a class="active" href="/article- arg_dict.article_type_id - row.id .html"> row.caption_c </a>
            % else %
                <a href="/article- arg_dict.article_type_id - row.id .html"> row.caption_c </a>
            % endif %
        % endfor %
        </div>
    </div>

    <h1>查询结果</h1>
    <ul>
    % for row in result %
        <li> row.id - row.title </li>
    % endfor %
    </ul>
</body>
</html>