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Django ModelForm: What is save(commit=False) used for?
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As a "real example", consider a user model where the email address and the username are always the same, and then you could overwrite your ModelForm's save method like:
class UserForm(forms.ModelForm):
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def save(self):
# Sets username to email before saving
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Determining 32 vs 64 bit in C++
..., but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we are trying to do this in a cross-platform, multiple compiler environment.
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Regular expression to match DNS hostname or IP Address?
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Here: stackoverflow.com/questions/4645126/… - I explain that names that start with a digit are considered as valid as well. Also, only one dot is questionable issue. Would be great to have more feedback on that.
– BreakPhreak
Jan 10 '11 a...
google mock分享(全网最全最好的gmock文档,没有之一) - C/C++ - 清泛网 ...
...ameter = iAPIProvider->getInterface<IParameterInterface>();
因为目前版本(1.5版本)的Google Mock还不支持模版函数,因此我们无法Mock IAPIProviderInterface中的getInterface,那我们现在怎么办?
如果你想做得比较完美的话我暂时也没想出办法,我...
CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...需要把PHP-FPM以补丁的形式安装到PHP中,而且PHP要与PHP-FPM版本一致,这是必须的,切记!
首先我们把PHP和PHP-FPM下载到同一目录下,此次用的为php-5.3.0.tar.bz2和php-5.3.0-fpm-0.5.12.diff.gz,下载到了同一目录下
#tar xvf php-5.3.0.tar.bz2...
What is the best way to do a substring in a batch file?
... - expands %I to a file extension only
%~sI - expanded path contains short names only
%~aI - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...ng sizes as percentages
Fixed vs. responsive sizing
Detailed example
Special circumstances
Limitation: Drawing and animation
Responsive design and Google Play
One tricky issue in designing apps is making apps that look good on devices with scree...
Regular expression for first and last name
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Your regex fail on 2 characters string. I think this fixed it ^[\w'\-,.]*[^_!¡?÷?¿\/\\+=@#$%ˆ&*(){}|~<>;:[\]]*$
– TKA
Aug 8 '19 at 19:23
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Data structure for loaded dice?
..., r and s, between 0 and 1. Let i = floor(r*N)+1. If qi < s then return ai else return bi. The work in the alias method is in figuring out how to produce qk, ak and bk.
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App Inventor 2 CustomWebView 拓展:高级版Web浏览器,完美浏览现代Web前...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 CustomWebView 拓展:...