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How do I filter ForeignKey choices in a Django ModelForm?
...yset attribute. Depends on how your form is built. If you build an explicit form, you'll have fields named directly.
form.rate.queryset = Rate.objects.filter(company_id=the_company.id)
If you take the default ModelForm object, form.fields["rate"].queryset = ...
This is done explicitly in the ...
How to find out element position in slice?
How does one determine the position of an element present in slice?
6 Answers
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How can I get the latest JRE / JDK as a zip file rather than EXE or MSI installer? [closed]
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You can download a Java Portable from PortableApps.com. It will not change your system settings. You can put it on your USB stick.
UPD: for those who needs JDK there's an open-source project OpenJDK Portable
UPD2: there is also a JDK Portable (Oracle)
Some people might be inter...
How do I call some blocking method with a timeout in Java?
Is there a standard nice way to call a blocking method with a timeout in Java? I want to be able to do:
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Convert String to Type in C# [duplicate]
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You can only use just the name of the type (with its namespace, of course) if the type is in mscorlib or the calling assembly. Otherwise, you've got to include the assembly name as well:
Type type = Type.GetType("Namespace.MyClass, MyAssembly");
If the assembly is st...
Subprocess changing directory
...call a command named cd.
But cd is a shell internal. So you can only call it as
subprocess.call('cd ..', shell=True) # pointless code! See text below.
But it is pointless to do so. As no process can change another process's working directory (again, at least on a UNIX-like OS, but as well on Win...
Greenlet Vs. Threads
... to gevents and greenlets. I found some good documentation on how to work with them, but none gave me justification on how and when I should use greenlets!
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ObjectiveC Parse Integer from String
...to extract a string (which contains an integer) from an array and then use it as an int in a function. I'm trying to convert it to a int using intValue.
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Access Enum value using EL with JSTL
...follow
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edited May 7 '14 at 11:04
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How do I drop a foreign key constraint only if it exists in sql server?
I can drop a table if it exists using the following code but do not know how to do the same with a constraint:
10 Answers
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