谷歌App Engine +表單驗證

Question

我想做谷歌應用程序引擎表單驗證，但我不知道如何做到這一點？ 我想是這樣的：

from google.appengine.ext.db import djangoforms 
from django import newforms as forms 


class SurveyForm(forms.Form): 
    occupations_choices = (
    ('1', ""), 
    ('2', "Undergraduate student"), 
    ('3', "Postgraduate student (MSc)"), 
    ('4', "Postgraduate student (PhD)"), 
    ('5', "Lab assistant"), 
    ('6', "Technician"), 
    ('7', "Lecturer"), 
    ('8', "Other") 
    ) 

howreach_choices = (
    ('1', ""),   
    ('2', "Typed the URL directly"), 
    ('3', "Site is bookmarked"), 
    ('4', "A search engine"), 
    ('5', "A link from another site"), 
    ('6', "From a book"), 
    ('7', "Other") 
    ) 

boxes_choices = (
    ("des", "Website Design"), 
    ("svr", "Web Server Administration"), 
    ("com", "Electronic Commerce"), 
    ("mkt", "Web Marketing/Advertising"), 
    ("edu", "Web-Related Education") 
    ) 

name = forms.CharField(label='Name', max_length=100, required=True) 
email = forms.EmailField(label='Your Email Address:') 
occupations = forms.ChoiceField(choices=occupations_choices, label='What is your occupation?') 
howreach = forms.ChoiceField(choices=howreach_choices, label='How did you reach this site?') 
# radio buttons 1-5 
rating = forms.ChoiceField(choices=range(1,6), label='What is your occupation?', widget=forms.RadioSelect) 

boxes = forms.ChoiceField(choices=boxes_choices, label='Are you involved in any of the following? (check all that apply):', widget=forms.CheckboxInput) 
comment = forms.CharField(widget=forms.Textarea, required=False) 

，我想是這樣顯示的：

template_values = { 
     'url' : url, 
     'url_linktext' : url_linktext, 
     'userName' : userName, 

'物品1'：SurveyForm（） }

而且我有這樣的錯誤消息：

Traceback (most recent call last): File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp_init_.py", line 515, in call handler.get(*groups) File "C:\Program Files\Google\google_appengine\demos\b00213576\main.py", line 144, in get self.response.out.write(template.render(path, template_values)) File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\template.py", line 143, in render return t.render(Context(template_dict)) File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\template.py", line 183, in wrap_render return orig_render(context) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 168, in render return self.nodelist.render(context) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 705, in render bits.append(self.render_node(node, context)) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 718, in render_node return(node.render(context)) File "C:\Program Files\Google\google_appengine\lib\django\django\template\defaulttags.py", line 209, in render return self.nodelist_true.render(context) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 705, in render bits.append(self.render_node(node, context)) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 718, in render_node return(node.render(context)) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 768, in render return self.encode_output(output) File "C:\Program Files\Google\google_appengine\lib\django\django\template_init_.py", line 757, in encode_output return str(output) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\util.py", line 26, in str return self.unicode().encode(settings.DEFAULT_CHARSET) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\forms.py", line 73, in unicode return self.as_table() File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\forms.py", line 144, in as_table return self._html_output(u'%(label)s%(errors)s%(field)s%(help_text)s', u'%s', '', u'
%s', False) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\forms.py", line 129, in _html_output output.append(normal_row % {'errors': bf_errors, 'label': label, 'field': unicode(bf), 'help_text': help_text}) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\forms.py", line 232, in unicode value = value.str() File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\util.py", line 26, in str return self.unicode().encode(settings.DEFAULT_CHARSET) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\widgets.py", line 246, in unicode return u'

\n%s\n

' % u'\n'.join([u'

%s

' % w for w in self]) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\widgets.py", line 238, in iter yield RadioInput(self.name, self.value, self.attrs.copy(), choice, i) File "C:\Program Files\Google\google_appengine\lib\django\django\newforms\widgets.py", line 212, in init self.choice_value = smart_unicode(choice[0]) TypeError: 'int' object is unsubscriptable

你有什麼想法我可以做這個驗證差異不同的情況？

我曾嘗試使用這種它做的事：

class ItemUserAnswer(djangoforms.ModelForm): 

類元： 模型= UserAnswer

但我不知道如何多餘的標籤添加到該表單，並顯示在一條線。 你有什麼建議嗎？

非常感謝，因爲它讓我瘋了，爲什麼現在還沒有工作：/

Answer 1

這裏是問題

rating = forms.ChoiceField(choices=range(1,6), label='What is your occupation?', widget=forms.RadioSelect)

選擇設置爲一個整數值。

Answer 2

內置方法is_valid()應該驗證。 當我提交表單時，我使用HTTP POST來完成它

def post(self): 
    try: 
     upload_files = self.get_uploads('file') # 'file' is file upload field in the form 
     if upload_files: 
      blob_info = upload_files[0] 
    except: 
     self.response.out.write('File not uploaded')   
    try: 
     data = AForm(data=self.request.POST) 
     if data and data.is_valid(): 
      # Save the data, and redirect to the view page 
      entity = data.save(commit=False) 
      entity.added_by = users.get_current_user() 
      entity.put() 
      if upload_files:    
       im = Image(reference=entity) 
       im.primary_image = blob_info.key() 
       im.put() 
       entity.put() 
       self.redirect('/serve/%s' % blob_info.key()) 
     else: 
      # Reprint the form 
      self.response.out.write('<html><body>' 
            '<form method="POST" ' 
            'action="/">' 
            '<table>') 
      self.response.out.write(data) 
      self.response.out.write('</table>' 
            '<input type="submit">' 
            '</form></body></html>') 
    except: 
     self.redirect('/serve/%s' % blob_info.key())