烧瓶错误:werkzeug.routing.BuildError

问题描述

我修改flaskr示例应用程序的登录名，第一行出现错误.但是www.html在模板目录中.

I modify the login of flaskr sample app, the first line get error. But www.html is in the template dir.

return redirect(url_for('www'))
#return redirect(url_for('show_entries'))

显示错误:

werkzeug.routing.BuildError

BuildError: ('www', {}, None) 

如果您在其他地方有这样的功能，

推荐答案

return redirect(url_for('www'))将起作用:

@app.route('/welcome')
def www():
    return render_template('www.html')

url_for寻找一个函数，将要调用的函数的 name 传递给它.这样想吧:

url_for looks for a function, you pass it the name of the function you are wanting to call. Think of it like this:

@app.route('/login')
def sign_in():
    for thing in login_routine:
        do_stuff(thing)
    return render_template('sign_in.html')

@app.route('/new-member')
def welcome_page():
    flash('welcome to our new members')
    flash('no cussing, no biting, nothing stronger than gin before breakfast')
    return redirect(url_for('sign_in')) # not 'login', not 'sign_in.html'

如果更容易记住，您也可以执行return redirect('/some-url').给定第一行，您想要的也可能只是return render_template('www.html').

You could also do return redirect('/some-url'), if that is easier to remember. It is also possible that what you want, given your first line, is just return render_template('www.html').

而且，并非来自shuaiyuancn的以下注释，如果您使用的是蓝图，则应将url_for调用为url_for('blueprint_name.func_name') .请注意，您不是在传递对象，而是在传递字符串. 在此处查看文档.

And also, not from shuaiyuancn's comment below, if you are using blueprints, url_for should be invoked as url_for('blueprint_name.func_name') Note you aren't passing the object, rather the string. See documentation here.

这篇关于烧瓶错误:werkzeug.routing.BuildError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！