我可以在Python/Flask中使用外部方法作为路由装饰器吗? [英] Can I use external methods as route decorators in Python/Flask?

问题描述

我的主应用程序文件当前是一系列方法定义，每个方法定义都附加到一条路线上.我的应用程序有3个不同的部分(主要，管理，API).我正在尝试将方法拆分为外部文件以进行更好的维护，但是我喜欢Flask在为应用程序的URL使用路由装饰器时的简单性.

My main app file is currently a series of method definitions, each attached to a route. I've got 3 distinct parts to my app (main, admin, api). I'm trying to split out methods into external files for better maintenance but I like Flask's simplicity in using route decorators for my application's URLs.

我的一条路线目前看起来像这样:

One of my routes currently looks like this:

# index.py
@application.route('/api/galleries')
def get_galleries():
    galleries = {
        "galleries": # get gallery objects here
    }
    return json.dumps(galleries)

但是我想将get_galleries方法提取到一个包含我的API方法的文件中:

But I'd like to extract the get_galleries method into a file containing methods for my API:

import api
@application.route('/api/galleries')
api.get_galleries():

问题是，当我这样做时，我得到一个错误.这可能吗?如果可以，我该怎么办?

The problem is that when I do that I get an error. Is this possible, and if so how do I do it?

推荐答案

就像其他注释中所述，您可以致电app.route('/')(api.view_home())或使用Flask的app.add_url_rule() http://flask.pocoo.org/docs/api/#flask.Flask.add_url_rule

Like stated in the other comment, you can call app.route('/')(api.view_home()) or use Flask's app.add_url_rule() http://flask.pocoo.org/docs/api/#flask.Flask.add_url_rule

烧瓶的@app.route()代码:

def route(self, rule, **options):
    def decorator(f):
        endpoint = options.pop('endpoint', None)
        self.add_url_rule(rule, endpoint, f, **options)
        return f
    return decorator

您可以执行以下操作:

## urls.py

from application import app, views

app.add_url_rule('/', 'home', view_func=views.home)
app.add_url_rule('/user/<username>', 'user', view_func=views.user)

然后:

## views.py

from flask import request, render_template, flash, url_for, redirect

def home():
    render_template('home.html')

def user(username):
    return render_template('user.html', username=username)

是我用来分解事物的方法.在自己的文件中定义所有urls，然后在运行app.run()

Is the method I use for breaking things down. Define all your urls in it's own file and then import urls in your __init__.py that runs app.run()

在您的情况下:

|-- app/
|-- __init__.py (where app/application is created and ran)
|-- api/
|   |-- urls.py
|   `-- views.py

api/urls.py

api/urls.py

from application import app

import api.views

app.add_url_rule('/call/<call>', 'call', view_func=api.views.call)

api/views.py

api/views.py

from flask import render_template

def call(call):
    # do api call code.

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