'自我' 沒有定義，Jinja2的，應用服務引擎

Question

錯誤：

self.response.out.write(template.render(template_values)) NameError: name 'self' is not defined

涉及線標記＃ERROR，與其他註釋：

#!/usr/bin/env python27 

import cgi 
import webapp2 
import jinja2 
import time 
import datetime 
import urllib 
#import cgitb; cgitb.enable() 
import os 
from google.appengine.ext import db 
from google.appengine.api import users 
from google.appengine.api import memcache 

jinja_environment = jinja2.Environment(autoescape=True, 
    loader=jinja2.FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates'))) 

class Visitor(db.Model): # I still need this with jinja2, yes? 
    name = db.StringProperty(required=1) 
    mood = db.StringProperty(choices=["good","bad","fair"]) 
    date = db.DateTimeProperty(auto_now_add=True) 

class MainPage(webapp2.RequestHandler): 
    def get(self): # ERROR HERE 
     visitor_query = Visitor.all().order('-date') #not sure about query...need to get curent visitor's submitted form values (name, mood). no log-in in app. 
     visitor = visitor_query.fetch(1) 

     template_values = { 
      'visitor': visitor, 
      'url': url, #not sure how this applies, just following tutorial 
      'url_linktext': url_linktext, 
     } 

    localtime = time.localtime(time.time()) 
    mon = localtime[1] # MONTH 
    h = localtime[3] # HOUR 
    span = "morning" if h == range(5,14) else "afternoon" if h == range(17,7) else "evening" 
    if mon <= 3: 
     var1 = "winter" 
     # more variables in if/elif statement here...I call these variables from index.html... 

# name = self.request.get("name") # not sure if I need to define these variables here using jinja2...tutorial does not define entity properties in example. 
# name = name.capitalize() 
# mood = self.request.get("mood") 

    template = jinja_environment.get_template('index.html') 
    self.response.out.write(template.render(template_values)) # ERROR HERE 


class Process(webapp2.RequestHandler): 
    def post(self): 
     name = self.request.get("name") 
     name = name.capitalize() 
     mood = self.request.get("mood") 
     message = Visitor(name=name, mood=mood) 
     if users.get_current_user(): 
      message.name = users.get_current_user() #not sure if I need users.get_current...no log-in required 
     message.mood = self.request.get("mood") 
     message.put() 

     self.redirect("/") 

app = webapp2.WSGIApplication([('/', MainPage)], 
           debug=True) 

app.yaml中：

application: emot 
version: 1 
runtime: python27 
api_version: 1 
threadsafe: true 

handlers: 
#- url: /stylesheets/ # I read no static files allowed with jinja2...not sure how I'll handle CSS... 
# static_dir: stylesheets 
- url: /.* 
    script: main.app 

libraries: 
- name: jinja2 
    version: latest 

index.yaml（所有這些工作沒有jinja2 ...）

indexes: 

- kind: Visitor 
    ancestor: yes 
    properties: 
    - name: name 
    - name: mood 
    - name: date 
     direction: desc 

此外，我交替地從g00gle_appengine/lib目錄複製（不是剪切）jinja2文件夾到我的應用程序目錄文件夾，包括只複製「jinja」文件夾（類似的方法使用gdata原子& src ...）還安裝了python-jinja2，它位於：/usr/share/doc/python-jinja2

我的index.html位於我的應用程序目錄中的「templates」目錄中。預先感謝讓我去。

Answer 1

從您發佈的代碼看來，代碼的錯誤行（以及前幾個代碼）縮進的程度不夠。

get方法應該如下排列：

def get(self): # ERROR HERE 
    visitor_query = Visitor.all().order('-date') #not sure about query...need to get curent visitor's submitted form values (name, mood). no log-in in app. 
    visitor = visitor_query.fetch(1) 

    template_values = { 
     'visitor': visitor, 
     'url': url, #not sure how this applies, just following tutorial 
     'url_linktext': url_linktext, 
    } 

    localtime = time.localtime(time.time()) 
    mon = localtime[1] # MONTH 
    h = localtime[3] # HOUR 
    span = "morning" if h == range(5,14) else "afternoon" if h == range(17,7) else "evening" 
    if mon <= 3: 
     var1 = "winter" 
    # more variables in if/elif statement here...I call these variables from index.html... 

    # name = self.request.get("name") # not sure if I need to define these variables here using jinja2...tutorial does not define entity properties in example. 
    # name = name.capitalize() 
    # mood = self.request.get("mood") 

    template = jinja_environment.get_template('index.html') 
    self.response.out.write(template.render(template_values)) # ERROR HERE