数据库配置
DBNAME = 'Questions'
models
# from django.db import models
from mongoengine import *
from QADoorWebDjango.settings import DBNAME
connect(DBNAME)
# Create your models here.
class Questions(Document):
_id = IntField(primary_key=True)
url = URLField()
title = StringField()
content = StringField()
is_solved = BooleanField(default=0)
answer_count = IntField()
view_count = StringField()
vote_count = StringField()
tags = ListField()
answers = ListField()
source = StringField()
meta = {'collection': 'questions'} # 指明连接数据库的哪张表
for i in Questions.objects[:10]: # 测试是否连接成功
print(i._id)
分页
1. 使用mongoengine自带的分页功能
- 视图函数
page = request.GET.get('page', 1)
pagination = Questions.objects.paginate(page=page, per_page=PER_PAGE)
return render(request, 'app/index.html', {'questions': pagination.items, 'pagination': pagination})
问题：这里Questions.objects被当成了django orm的QuerySet类型，会提示AttributeError: 'QuerySet' object has no attribute 'paginate'，暂时还不知道改怎么解决。
- 模板
<div class=pagination>
{% if pagination.has_prev %}
<li class="waves-effect"><a href="./{{ pagination.prev_num }}" >上一页</a></li>
{% endif %}
<li class="active"><strong><a href="">当前页 {{ pagination.page }} of {{ pagination.pages }}.</a></strong></li>
{% if pagination.has_next %}
<li class="waves-effect"><a href="./{{ pagination.next_num }}">下一页</a></li>
{% endif %}
</div>
2. 使用django的分页功能
- 视图函数
from django.core.paginator import Paginator
question_list = Questions.objects
page = request.GET.get('page', 1)
paginator = Paginator(question_list, PER_PAGE)
questions = paginator.page(page)
context = {
'questions': questions,
'total_pages': paginator.page_range
}
return render(request, 'app/index.html', context)
- 模板
<ul class="pagination">
{# 上一页 #}
{% if questions.has_previous %}
<li class="waves-effect"><a href="?page={{ questions.previous_page_number }}"><i class="material-icons">chevron_left</i></a></li>
{% else %}
<li class="disabled"><a href="#!"><i class="material-icons">chevron_left</i></a></li>
{% endif %}
{% for page in total_pages %}
{% if page %}
{% ifequal page questions.number %}
{# 当前页页 #}
<li class="active"><a>{{ page }}</a></li>
{% else %}
{# 指定页 #}
<li class="waves-effect"><a href="?page={{ page }}">{{ page }}</a></li>
{% endifequal %}
{% else %}
<li class="waves-effect"><a href="#">...</a></li>
{% endif %}
{% endfor %}
{# 下一页 #}
{% questions.has_next %}
<li class="waves-effect"><a href="?page={{ questions.next_page_number }}"><i class="material-icons">chevron_right</i></a></li>
{% else %}
<li class="disabled"><a href="#!"><i class="material-icons">chevron_right</i></a></li>
{% endif %}
</ul>
其他问题
1. object._id问题
- 问题描述
在django模板中使用mongodb对象的_id属性时会提示：Variables and attributes may not begin with underscores: 'value._id'
from django import template
register = template.Library()
@register.filter(name='private')
def private(obj, attribute):
return getattr(obj, attribute)
在模板中使用
{{ value|private:'_id' }}
