使用mako模板處理404錯誤

Question

試圖顯示由mako在404錯誤上呈現的模板，但它仍然顯示cherrypy footer和附加消息的標準錯誤頁面：|此外，自定義錯誤頁面失敗：TypeError：render_body（）正好1參數（3給出）」 代碼：？

def error_page_404(status, message, traceback, version): 
    tmpl = tpl.get_template("404.mako") 
    return tmpl.render(status, message) 
cherrypy.config.update({'error_page.404': error_page_404}) 

需要幫助如何顯示我的佈局（Mako的模板）完全自定義錯誤頁

全碼：

import sys 
sys.stdout = sys.stderr 
import os, atexit 
import threading 
import cherrypy 
from mako.template import Template 
from mako.lookup import TemplateLookup 

cherrypy.config.update({'environment': 'embedded'}) 
if cherrypy.engine.state == 0: 
    cherrypy.engine.start(blocking=False) 
    atexit.register(cherrypy.engine.stop) 

localDir = os.path.dirname(__file__) 
absDir = os.path.join(os.getcwd(), localDir) 
path = os.path.join(absDir,'files') 
templ_path = os.path.join(absDir,'html') 

tpl = TemplateLookup(directories=[templ_path], input_encoding='utf-8', output_encoding='utf-8',encoding_errors='replace') 

def error_page_404(status, message, traceback, version): 
    tmpl = tpl.get_template("404.mako") 
    return tmpl.render(status, message) 
cherrypy.config.update({'error_page.404': error_page_404}) 

class Root: 
    def index(self): 
    tmpl = tpl.get_template("index.mako")  
    return tmpl.render(text = 'Some text',url = cherrypy.url()) 
index.exposed = True  

_application = cherrypy.Application(Root(), None) 

import posixpath 

def application(environ, start_response): 
    environ['SCRIPT_NAME'] = posixpath.dirname(environ['SCRIPT_NAME']) 
    if environ['SCRIPT_NAME'] == '/': 
     environ['SCRIPT_NAME'] = '' 
     return _application(environ, start_response) 

Answer 1

你最有可能在你的404處理器提高的誤差，我猜你不設置CherryPy的配置的request.error_response像this，以及約response_body檢查this的錯誤，你可能正在使用錯誤的模板body。從評論

編輯：

def error_page_404(status, message, traceback, version): 
    tmpl = tpl.get_template("404.mako") 
    return tmpl.render(stat=status, msg=message) 

cherrypy.config.update({'error_page.404': error_page_404}) 

的render方法，只能用關鍵字參數指定函數的行爲，也可能是一個更靈活一點，並指定這樣相同的功能：

def error_page_404(status, message, traceback, version): 
    tmpl = tpl.get_template("404.mako") 
    args = {'stat': status, 
      'msg': message} 
    return tmpl.render(**args) 

這將使它更容易擴展您的模板的參數，我通常使用**args 爲我的render調用。

但基本上問題是（正如你指出的那樣），你在哪裏調用非關鍵字參數的渲染，預期的輸入只是模板的關鍵字參數。

Answer 2

所以，我想通了:)感謝cyraxjoe！這裏是代碼：

import sys 
sys.stdout = sys.stderr 
import os, atexit 
import threading 
import cherrypy 
from mako.template import Template 
from mako.lookup import TemplateLookup 

cherrypy.config.update({'environment': 'embedded'}) 
if cherrypy.engine.state == 0: 
    cherrypy.engine.start(blocking=False) 
    atexit.register(cherrypy.engine.stop) 

localDir = os.path.dirname(__file__) 
absDir = os.path.join(os.getcwd(), localDir) 
path = os.path.join(absDir,'files') 
templ_path = os.path.join(absDir,'html') 

tpl = TemplateLookup(directories=[templ_path], input_encoding='utf-8', output_encoding='utf-8',encoding_errors='replace') 

def error_page_404(status, message, traceback, version): 
    tmpl = tpl.get_template("404.mako") 
    return tmpl.render(status, message) 
cherrypy.config.update({'error_page.404': error_page_404}) 

class Root: 
    _cp_config = {'error_page.404': error_page_404} 
    def index(self): 
    tmpl = tpl.get_template("index.mako")  
    return tmpl.render(text = 'Some text',url = cherrypy.url()) 
index.exposed = True  

_application = cherrypy.Application(Root(), None) 

import posixpath 

def application(environ, start_response): 
    environ['SCRIPT_NAME'] = posixpath.dirname(environ['SCRIPT_NAME']) 
    if environ['SCRIPT_NAME'] == '/': 
     environ['SCRIPT_NAME'] = '' 
     return _application(environ, start_response)