搜索功能
搜索功能的实现设计:
- 前段界面输入搜索关键字, 传送到对应view中
- 在对应的view中进行数据库关键字搜索
- 这里搜索可以只对文章名搜索或者全文搜索
首先在my_blog/templates下添加所有输入框
<div class="sidebar pure-u-1 pure-u-md-1-4">
<div class="header">
<h1 class="brand-title"><a href="{% url "home" %}">Andrew Liu Blog</a></h1>
<h2 class="brand-tagline">雪忆 - Snow Memory</h2>
<nav class="nav">
<ul class="nav-list">
<li class="nav-item">
<a class="button-success pure-button" href="/">主页</a>
</li>
<li class="nav-item">
<a class="button-success pure-button" href="{% url "archives" %}">归档</a>
</li>
<li class="nav-item">
<a class="pure-button" href="https://github.com/Andrew-liu/my_blog_tutorial">Github</a>
</li>
<li class="nav-item">
<a class="button-error pure-button" href="http://weibo.com/dinosaurliu">Weibo</a>
</li>
<li class="nav-item">
<a class="button-success pure-button" href="/">专题</a>
</li>
<li>
<form class="pure-form" action="/search/" method="get">
<input class="pure-input-3-3" type="text" name="s" placeholder="search">
</form>
</li>
<li class="nav-item">
<a class="button-success pure-button" href="{% url "about_me" %}">About Me</a>
</li>
</ul>
</nav>
</div>
</div>
在my_blog/article/views.py中添加查询逻辑
def blog_search(request):
if 's' in request.GET:
s = request.GET['s']
if not s:
return render(request,'home.html')
else:
post_list = Article.objects.filter(title__icontains = s)
if len(post_list) == 0 :
return render(request,'archives.html', {'post_list' : post_list,
'error' : True})
else :
return render(request,'archives.html', {'post_list' : post_list,
'error' : False})
return redirect('/')
这里为了简单起见, 直接对archives.html进行修改, 使其符合查询逻辑
{% extends "base.html" %}
{% block content %}
<div class="posts">
{% if error %}
<h2 class="post-title">没有相关文章题目</a></h2>
{% else %}
{% for post in post_list %}
<section class="post">
<header class="post-header">
<h2 class="post-title"><a href="{% url "detail" id=post.id %}">{{ post.title }}</a></h2>
<p class="post-meta">
Time: <a class="post-author" href="#">{{ post.date_time |date:"Y /m /d"}}</a> <a class="post-category post-category-js" href="{% url "search_tag" tag=post.category %}">{{ post.category }}</a>
</p>
</header>
</section>
{% endfor %}
{% endif %}
</div><!-- /.blog-post -->
{% endblock %}
添加了if判断逻辑, 然后还需要修改views中的archives
def archives(request) :
try:
post_list = Article.objects.all()
except Article.DoesNotExist :
raise Http404
return render(request, 'archives.html', {'post_list' : post_list,
'error' : False})
最后添加my_blog/my_blog/urls.py设置url
urlpatterns = patterns('',
# Examples:
# url(r'^$', 'my_blog.views.home', name='home'),
# url(r'^blog/', include('blog.urls')),
url(r'^admin/', include(admin.site.urls)),
url(r'^$', 'article.views.home', name = 'home'),
url(r'^(?P<id>\d+)/$', 'article.views.detail', name='detail'),
url(r'^archives/$', 'article.views.archives', name = 'archives'),
url(r'^aboutme/$', 'article.views.about_me', name = 'about_me'),
url(r'^tag(?P<tag>\w+)/$', 'article.views.search_tag', name = 'search_tag'),
url(r'^search/$','article.views.blog_search', name = 'search'),
)
ReadMore功能
对于ReadMore的前段按钮界面设置早已经添加过了, 所以这里只需要进行简单的设置就好了
通过使用Django中内建的filter就可以速度实现
{{ value|truncatewords:2 }} #这里2表示要显示的单词数, 以后的会被截断, 不在显示
这里只需要修改my_blog/templates/home.html界面中的变量的过滤器
#将正文截断设置为10
{{ post.content|custom_markdown|truncatewords_html:100 }}
在浏览器中输入http://127.0.0.1:8000/可以看到效率(最好把博文设置的长一些)
