我想在我的Bottle服務(wù)器運(yùn)行時添加和刪除路由。我的一般問題：是否有刪除路線的正確方法？換句話說：我怎樣才能撤消我所做的事情app.route？在下文中，我將以更詳細(xì)的方式描述我的問題。如果您知道我的一般問題的答案，請不要浪費(fèi)時間閱讀它。這是一個小演示腳本，描述了我如何解決我的問題：如果調(diào)用GET /add：添加“Hello World”路由如果調(diào)用GET /remove：所有具有相同前綴的路由（如“Hello World”路由）都會更改為觸發(fā) 404 錯誤import bottlefrom bottle import redirect, abortdef addRoute(): app.route('/route/hello')(lambda :'Hello World') print('Routes after calling /add:\n' + '\n'.join([str(route) for route in app.routes])) redirect('route/hello')def removeRoute(): prefix = '/route/hello' #making a list of all routes having the prefix #because this is a testfile there is only one rule that startswith prefix routes = [route for route in app.routes if route.rule.startswith(prefix)] #because there could be multiple routes with the same rule and method, #making a list without duplicates ruleMethodTuples = list(dict.fromkeys([(route.rule, route.method) for route in routes])) for ruleMethod in ruleMethodTuples : #Workaround: Overwriting the existing route with a 404 #Here I'd prefer to make a statement that removes the existing route instead, #so the default 404 would be called app.route(ruleMethod[0], method = ruleMethod[1])(lambda **kwords: abort(404, 'Route deleted')) print('Routes after calling /remove:\n' + '\n'.join([str(route) for route in app.routes])) redirect('/route/hello')if __name__ == '__main__': app = bottle.app() app.route('/add')(addRoute) app.route('/remove')(removeRoute) print('Initial routes:\n' + '\n'.join([str(route) for route in app.routes])) bottle.run(app, host = 'localhost', port = 8080)所以這是啟動和調(diào)用后的輸出：/添加/消除/添加在每次通話后顯示app.routes中有哪些路線。因此，調(diào)用app.route不是替換GET '/route/hello'，而是在列表末尾添加更多具有相同方法和規(guī)則的路由。然而，到目前為止這仍然有效，因?yàn)槭紫冗x擇了最新的匹配路由，但我很確定這會（或早或晚）導(dǎo)致性能問題或在調(diào)用一些 /add s 和 /remove s 后導(dǎo)致服務(wù)器崩潰。此外我注意到，我可以在不更改實(shí)際路由的情況下更改app.routes ，所以次要問題：我可以從 app.routes 中刪除“已棄用”的路由以防止計(jì)算器溢出嗎？第三個問題：我做的事情完全錯誤嗎？
1 回答
慕絲7291255
TA貢獻(xiàn)1859條經(jīng)驗(yàn) 獲得超6個贊
我檢查了add_route的源代碼
它添加route到兩個對象：self.routesand?self.router(?app.routesand?app.router) 這會產(chǎn)生問題。
def?add_route(self,?route):? ???"""?Add?a?route?object,?but?do?not?change?the?:data:`Route.app` ????????attribute.""" ????self.routes.append(route) ????self.router.add(route.rule,?route.method,?route,?name=route.name)????if?DEBUG:?route.prepare()
self.router是具有rules,?builder,?static?dyna_routes,?_dyna_regexes
如果您在添加新路線之前和之后檢查它們，那么您會看到builder和中的變化static。
def addRoute():
? ? print('--- before ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ??
? ? app.route('/route/hello')(lambda :'Hello World')
? ? print('--- after ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ? print('Routes after calling /add:\n' + '\n'.join([str(route) for route in app.routes]))
? ? redirect('route/hello')
如果我'/route/hello'從中刪除builder然后停止工作但仍然顯示它們，那么你將不得不從兩者中刪除static-但它們沒有為此的特殊功能:)'/route/hello'app.routes'/route/hello'app.routesapp.router
def removeRoute():
? ? prefix = '/route/hello'
? ? del app.router.builder[prefix]
? ? del app.router.static['GET'][prefix]
? ??
? ? print('Routes after calling /remove:\n' + '\n'.join([str(route) for route in app.routes]))
? ? redirect('/route/hello')
我的完整代碼：
import bottle
from bottle import redirect, abort
def addRoute():
? ? print('--- before /add ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ? print(app.router.dyna_regexes)
? ? print('Routes before calling /add:\n' + '\n'.join([str(route) for route in app.routes]))
? ??
? ? app.route('/route/hello')(lambda :'Hello World')
? ??
? ? print('--- after /add ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ? print(app.router.dyna_regexes)
? ? print('Routes after calling /add:\n' + '\n'.join([str(route) for route in app.routes]))
? ??
? ? redirect('route/hello')
def removeRoute():
? ? prefix = '/route/hello'
? ? print('--- before /remove ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ? print(app.router.dyna_regexes)
? ? print('Routes before calling /remove:\n' + '\n'.join([str(route) for route in app.routes]))
? ? del app.router.builder[prefix]
? ? del app.router.static['GET'][prefix]
? ??
? ? print('--- after /remove ---')
? ? print(app.router.rules)
? ? print(app.router.builder)
? ? print(app.router.static)
? ? print(app.router.dyna_routes)
? ? print(app.router.dyna_regexes)
? ? print('Routes before calling /remove:\n' + '\n'.join([str(route) for route in app.routes]))
? ? redirect('/route/hello')
if __name__ == '__main__':
? ? app = bottle.app()
? ? app.route('/add')(addRoute)
? ? app.route('/remove')(removeRoute)
? ? print('Initial routes:\n' + '\n'.join([str(route) for route in app.routes]))
? ? bottle.run(app, host = 'localhost', port = 8080)
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