Flas中的动态导航

@app.route('/') def index(): page = query_db('select * from page where path = "/"', one=True) return render_template('page.html', page=page, bread=['']) @app.route('/<path>') def page(path=None): page = query_db('select * from page where path = "%s"' % path, one=True) bread = Bread(path) return render_template('page.html', page=page, crumbs=bread.links)

2条回答

网友

1楼 · 编辑于 2024-05-15 05:05:59

您可以在一个函数中通过使用多个decorator来实现：）

@app.route('/', defaults={'path': '/'})
@app.route('/<path>')
def page(path):
    page = query_db('select * from page where path = "%s"' % path, one=True)
    if path == '/':
        bread = Bread(path)
        crumbs = bread.links
    else:
        bread = ['']
        crumbs = None
    return render_template('page.html', page=page, bread=bread, crumbs=crumbs)

就我个人而言，我将修改bread函数，使其也适用于路径/。

如果只是向上下文中添加变量，那么我建议查看上下文处理器：http://flask.pocoo.org/docs/templating/#context-processors

网友

2楼 · 编辑于 2024-05-15 05:05:59

“flasky”和pythonic的方法是使用基于类的视图和模板层次结构

首先阅读这两种方法的文档，然后可以基于此方法重构代码：

class MainPage(MethodView):
    navigation=False
    context={}

    def prepare(self,*args,**kwargs):
        if self.navigation:
            self.context['navigation']={
                #building navigation
                #in your case based on request.args.get('page')
            }
        else:
            self.context['navigation']=None

    def dispatch_request(self, *args, **kwargs):
        self.context=dict() #should nullify context on request, since Views classes objects are shared between requests
        self.prepare(self,*args,**kwargs)
        return super(MainPage,self).dispatch_request(*args,**kwargs)

class PageWithNavigation(MainPage):
    navigation = True

class ContentPage(PageWithNavigation):
    def get(self):
        page={} #here you do your magic to get page data
        self.context['page']=page
        #self.context['bread']=bread
        #self.context['something_Else']=something_Else
        return render_template('page.html',**self.context)

然后您可以执行以下操作：为main_page.html和page_with_navigation.html创建单独的页面然后你的每个页面“error.html，page.html，somethingelse.html”都基于其中一个。关键是要动态地执行此操作：

将稍微修改准备方法：

def prepare(self):
        if self.navigation:
            self.context['navigation']={
                #building navigation
                #in your case based on request.args.get('page')
            }
        else:
            self.context['navigation']=None
        #added another if to point on changes, but you can combine with previous one
        if self.navigation:
            self.context['extends_with']="templates/page_with_navigation.html"
        else:
            self.context['extends_with']="templates/main_page.html"

以及您的模板： 主页.html

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    {% block navigation %}
    {% endblock %}
    {% block main_content %}
    {% endblock %}
</body>
</html>

带导航的网页.html

{% extends "/templates/main_page.html" %}

{% block navigation %}
        here you build your navigation based on navigation context variable, which already passed in here
{% endblock %}

page.html或其他任何页面。保持简单！
注意第一线。您的视图设置应该进入哪个页面，您可以通过设置navigation=of view类轻松地调整它。

{% extends extends_with %}

{% block main_content %}
        So this is your end-game page.
        Yo do not worry here about navigation, all this things must be set in view class and template should not worry about them
        But in case you need them they still available in navigation context variable
{% endblock %}

相关问题更多 >

编程相关推荐

热门问题

热门文章