基数为 10 的 int() 的无效文字：尝试保存对象时

Question

我知道这里有很多具有相同标题和错误的帖子。我尽可能多地经历了，但发布的代码与我的并不相似。所以我不得不问。

我正在尝试将“游戏”对象保存到数据库中。相关源文件贴在下面：

models.py

from django.contrib.auth.models import User
from django.db import models

class Usertypes(models.Model):
    user = models.OneToOneField(User)
    usertype = models.TextField()                   

    def __unicode__(self):
        return self.user_name

class Games(models.Model):
    name = models.CharField(max_length=100,unique=True)
    category = models.CharField(max_length=100)
    url = models.URLField()
    developer = models.OneToOneField(User)
    price = models.FloatField()

    def __unicode__(self):
        return self.name

views.py：

def addgame(request):

    c={}
c.update(csrf(request))
saved = False
if request.method == 'POST':
    name = request.POST['name']
    #print(name)
    category = request.POST['category']
    #print(category)
    url = request.POST['url']
    #print(url)
    developer = request.POST['developer']
    #print(developer)
    price = request.POST['price']
    #print(price)
    game = Games(name,category,url,developer,price)
    game.save()
    saved = True
    return render_to_response('gamestore/developer_homepage.html',{'saved':saved},context_instance=RequestContext(request))

urls.py:

from django.conf.urls import patterns, include, url
from django.contrib import admin
import gamestore.views

urlpatterns = patterns('',
    # Examples:
    # url(r'^$', 'wsdProject.views.home', name='home'),
    # url(r'^blog/', include('blog.urls')),

    url(r'^admin/', include(admin.site.urls)),
    url(r'^$','gamestore.views.home'),
    url(r'^login/','gamestore.views.login_view'),
    url(r'^logout/','gamestore.views.logout_view'),
    url(r'^registration/','gamestore.views.registration'),
    url(r'^addgame/','gamestore.views.addgame'),
    url(r'^gamestore/', include('gamestore.urls', namespace="gamestore")),

最后，我的错误：

/addgame/ 处的ValueError 基数为 10 的 int() 的无效文字：'NFS'

错误回溯：

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/addgame/

Django Version: 1.7.1
Python Version: 3.2.3
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'gamestore')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/core/handlers/base.py" in get_response 111.response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/mukhera3/Desktop/game_store/wsdProject/gamestore/views.py" in addgame 137.game.save()
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/base.py" in save 591.force_update=force_update,update_fields=update_fields)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/base.py" in save_base 619.updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/base.py" in _save_table 681.forced_update)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/base.py" in _do_update 711.filtered = base_qs.filter(pk=pk_val)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/query.py" in filter 691.return self._filter_or_exclude(False, *args, **kwargs)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db models/query.py" in _filter_or_exclude 709.clone.query.add_q(Q(*args, **kwargs))
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/sql/query.py" in add_q 1287. clause, require_inner = self._add_q(where_part, self.used_aliases)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/sql/query.py" in _add_q 1314. current_negated=current_negated, connector=connector)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/sql/query.py" in build_filter 1186.condition = self.build_lookup(lookups, col, value)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/sql/query.py" in build_lookup 1094. return final_lookup(lhs, rhs)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/lookups.py" in __init__82.self.rhs = self.get_prep_lookup()
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/lookups.py" in get_prep_lookup 85.return self.lhs.output_field.get_prep_lookup(self.lookup_name, self.rhs)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/fields/__init__.py" in get_prep_lookup 646.return self.get_prep_value(value)
File "/home/mukhera3/djangoenv/lib/python3.2/site-packages/django/db/models/fields/__init__.py" in get_prep_value 915.return int(value)

Exception Type: ValueError at /addgame/
Exception Value: invalid literal for int() with base 10: 'NFS'

谁能建议我应该如何更改 Games 对象的保存方式？提前致谢！！

Answer 1

您确实应该为此使用 ModelForm，这将使一切变得更加容易。

也就是说，您可以通过为开发人员获取实际的 User 对象来修复您的代码：

developer = User.objects.get(username=request.POST['developer'])

但如果您使用了 ModelForm，则不需要这样做。此外，您还将获得这样的优势，即您的用户的条目将真正得到验证，而不是在数据丢失时崩溃，这就是现在发生的情况。