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• Changing a field's nullable attribute in Django after the model is committed?

  - by Rhubarb

  So I have a model that has a field, which originally defaulted to not allow nulls. I want to change it to allow nulls, but syncdb doesn't make the change. Is it as simple as changing it in the database and reflecting it in the models.py file just for the next time its run against a new database?

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• How do I filter values in a Django form using ModelForm?

  - by malandro95

  I am trying to use the ModelForm to add my data. It is working well, except that the ForeignKey dropdown list is showing all values and I only want it to display the values that a pertinent for the logged in user. Here is my model for ExcludedDate, the record I want to add: class ExcludedDate(models.Model): date = models.DateTimeField() reason = models.CharField(max_length=50) user = models.ForeignKey(User) category = models.ForeignKey(Category) recurring = models.ForeignKey(RecurringExclusion) def __unicode__(self): return self.reason Here is the model for the category, which is the table containing the relationship that I'd like to limit by user: class Category(models.Model): name = models.CharField(max_length=50) user = models.ForeignKey(User, unique=False) def __unicode__(self): return self.name And finally, the form code: class ExcludedDateForm(ModelForm): class Meta: model = models.ExcludedDate exclude = ('user', 'recurring',) How do I get the form to display only the subset of categories where category.user equals the logged in user?

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• Django: Is it possible to attach media files (css, javascript etc) to a View-class?

  - by mrmclovin

  I can't fins any information on how to define css or javascript files in a view like: class MyView(View): .... class Media: css = { 'all' : 'mystyle.css' } If you have a form you can do like: class MyForm(ModelForm): .... class Media: css = { 'all' : 'mystyle.css' } And then in the template you can print the files like; {{ form.media.css }} I like that Syntax very much and I like to keep the View-specific css files in the app-directory. Does anyone know if it's possible? Thanks!

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• Django: Passing the result of {% trans %} via a filter.

  - by Murkin

  Hello everyone, I have a string that I want passed via the "linebreaks" filter. {% trans "my string"|linebreaks %} Doesn't work. Is there another way ?

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• libvirt qemu/kvm migration problem

  - by Panda

  I am using kvm and libvirt on my Dell server. Now i am trying to migrate one virtual machine from a physical server to another. However, I failed everytime. In virsh on physicalServer1, I typed: virsh # migrate virtualmachine1 qemu+ssh://username@physicalServer2/system error: operation failed: migration to 'tcp:physicalServer2:49163' failed: migration failed Then I searched FAQ part on libvirt.org. It says: error: operation failed: migration to '...' failed: migration failed This is an error often encountered when trying to migrate with QEMU/KVM. This typically happens with plain migration, when the source VM cannot connect to the destination host. You will want to make sure your hosts are properly configured for migration (see the migration section of this FAQ) I managed to ssh physicalServer2 from a shell on virtualmachine1 so the above red part did not explain my failure. I also open ports on physicalServer2, iptables -L shows following information: Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:bootps ACCEPT tcp -- anywhere anywhere tcp dpt:bootps ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:bootps ACCEPT tcp -- anywhere anywhere tcp dpt:bootps ACCEPT tcp -- anywhere anywhere state NEW tcp dpts:49152:49215 Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT) target prot opt source destination The /var/log/libvirt/qemu/virtualmachine1.log on physicalServer2: 2011-05-06 13:37:30.708: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 -name openjudge-test -uuid a8c704bc-a4f9-90db-3e57-40e60b00aac1 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/virtualmachine1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c -drive file=/media/nfs/virtualmachine1.img,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=00:16:36:8a:22 :a0,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:2 -vga cirrus -incoming tcp:0.0.0.0:49163 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 char device redirected to /dev/pts/0 2011-05-06 13:37:30.915: shutting down The /var/log/libvirt/qemu/virtualmachine1.log on physicalServer1 is empty. Both physical servers are using Ubuntu 11.04. The libvirt and kvm used are installed by apt-get. The libvirt version is 0.8.8.

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• Playframework and Django

  - by n002213f

  I have worked with Django before and have recently seen the Play framework. Is this the Java community's answer to Django? Any experiences with it? Any performance comparisons with other Java web frameworks? Edit:Almost similar to http://stackoverflow.com/questions/1597086/any-experience-with-play-java-web-development-framework, the responses, unfortunately don't say much about the framework.

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• Convert and convert back datetime in Django

  - by Anshuma

  I am parsing feeds using feedparser and I am trying to store updated or updated_parsed attributes of feeds in Django db. But it shows an error as [u'Enter a valid date/time in YYYY-MM-DD HH:MM[:ss[.uuuuuu]] format.'] Please tell me how to convert updated and updated_parsed such that it can be stored in the Django db such that I can (convert and reuse) or just reuse the date stored in db while parsing in this way: feedparser.parse("url", modified = lastupdate)

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• Node.js as a custom (streaming) upload handler for Django

  - by Gijs

  I want to build an upload-centric app using Django. One way to do this is with nginx's upload module (nonblocking) but it has its problems. Node.js is supposed to be a good candidate for this type of application. But how can I make node.js act as an upload_handler() for Django (http://docs.djangoproject.com/en/1.1/topics/http/file-uploads/#modifying-upload-handlers-on-the-fly) I'm not sure where to look for examples?

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• Having a POST'able API and Django's CSRF Middleware

  - by T. Stone

  I have a Django webapp that has both a front-end, web-accessible component and an API that is accessed by a desktop client. However, now with the new CSRF middleware component, API requests from the desktop client that are POST'ed get a 403. I understand why this is happening, but what is the proper way to fix this without compromising security? Is there someway I can signal in the HTTP header that it's an API request and that Django shouldn't be checking for CSRF or is that a bad strategy?

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• Make CSRF middleware work in Django's 404 error pages

  - by jack

  I put a login box alone with a keyword search box in 404.html in a Django project so in case a 404 error is raised, visitors get more options to jump to other parts. But the CSRF middleware doesn't work in 404 error page with no csrf token rendered. I tried move 'django.middleware.csrf.CsrfViewMiddleware' to first of MIDDLEWARE_CLASSES in settings.py but did not work either. Anyone knows a solution?

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• jQuery as a replacement for Django or Web2Py

  - by ganjod

  Hi all, I was planning to write a new webapp, I figured out two options for my backend - web2py or django. I recently came across jQuery and found it to be very cool. Could I just use jQuery as a replacement for django and web2py and finish this webapp. Some features that I'm going to implement - user profiles, users can add content to the website, etc. Is it possible to do solely in jQuery ?

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• django flatpages in rails?

  - by rakeham

  Hi How can I build a minimal CMS like Django does it with django-flatpages? I prefer a build in solution not a plugin. I heard of controller caching, maybe someone knows a other solution. thanks!

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• Advice on Python/Django and message queues

  - by Andy Hume

  I have an application in Django, that needs to send a large number of emails to users in various use cases. I don't want to handle this synchronously within the application for obvious reasons. Has anyone any recommendations for a message queuing server which integrates well with Python, or they have used on a Django project? The rest of my stack is Apache, mod_python, MySQL.

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• Tornado or Django works with CGI ?

  - by xRobot

  Hi at all, Tornado is a webserver + framework like Django but for real-time features. On my server I don't have a python module or wsgi module so I thought CGI. Is there a way to get Tornado ( or Django ) works by using CGI folder ? If yes, Could you explain me how do I do that ?

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• Activating Eclipse Django Editor on OS X

  - by hekevintran

  I installed a plugin for Eclipse called Django Editor. I can't figure out how to use it. The editor is not in my list of editors so I cannot do "Open with Django Editor" on a file nor associate a file extension with it. It appears nowhere in my preferences. How can I activate this editor? I am running Mac OS X 10.5.8 and Eclipse 3.5.2 Galileo.

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• How to use Django with GWT ?

  - by Mononofu

  So I know that I can communicate between those two using JSON, but I also know that I would have to manually recreate all Django objects in JS. Do you know of any tool or library that could help me do that? Or maybe even a better way of achieving the same goal? I only found these two: http://palantar.blogspot.com/2006/06/agad-tutorial-ish-sort-of-post.html http://stackoverflow.com/questions/990319/django-gwt-or-jquery But then I still would have to manually mirror my objects, which would violate DRY.

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• Testing tools for Django Project

  - by Bharath

  Can anyone please suggest me some good testing tools for a django project? I need to test the different use case scenarios, unit testing, as well as load testing for my project. Is there any good standard testing suite available?? Any other suggestion(s) for the testing process is greatly appreciated. I use Django, postgresql on Ubuntu server if this information is necessary.

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• Create a Session in Django

  - by Reznor

  So far the Documentation for Django has been too technical. How do I create a session and store variables in it or get variables from it? I'm new to the Django framework, hence why the Documentation is too technical. Sessions are my 'last step'.

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• Pass arguments from django-registration to django-profiles when user registers.

  - by user353339

  I'm using both django-registrations and django-profiles. When the user registers I'd like to ask them to fill in the form fields from profiles as well as the usual username and password. How do I combine these two into one sign up page?

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• How to chroot Django

  - by Brian M. Hunt

  Can one run Django in a chroot? Notably, what's necessary in order to set up (for example) /var/www as a chroot'd directory and then have Django run in that chroot'd directory? Thank you - I'm grateful for any input.

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• Django anonymous user in model

  - by jack

  I have a model defined as below: class Example(models.Model): user = models.ForeignKey(User, null=True) other = models.CharField(max_length=100) The problem is Django refuses to assign django.contrib.auth.models.AnonymousUser directly to Example.user as null field so everytime I have to check if request.user.is_authenticated() ans assign Example.user = None manually. Is there a default value for AnonymousUser to use in a model field?

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• DRY URL's in Django Javascript

  - by Noio

  I'm using Django on Appengine. I'm using the django reverse() function everywhere, keeping everything as DRY as possible. However, I'm having trouble applying this to my client-side javascript. There is a JS class that loads some data depending on a passed-in ID. Is there a standard way to not-hardcode the URL that this data should come from? var rq = new Request.HTML({ 'update':this.element, }).get('/template/'+template_id+'/preview'); //The part that bothers me.

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• Django template call function

  - by cleg

  I'm passing to Django's template a function, which returns me some records. I want to call this function and iterate over it's result. {% for item in my_func(10) %} That doesn't work. I've tried to set fuction's return value to a variable and iterate over variable, but there seems to be no way to set variable in Django template. Is there any normal way to do it?

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• Error in django url.py??

  - by qulzam

  I am new in django. I try to practice and run the wiki application (i found tutorial at Learn django), In url.py file i write the following urls... urlpatterns = patterns('', (r'^wikicamp/(?p[^/]+)/edit/$','wikiapp.wiki.views.edit_page'), (r'^wikicamp/(?p[^/]+)/save/$','wikiapp.wiki.views.save_page'), (r'^wikicamp/(?p[^/]+)/$','wikiapp.wiki.views.view_page'), ) But there is errror which i cant understand. sre_Constants.error:Unexpected end of pattern. (r'^wikicamp/(?p[^/]+)/$','wikiapp.wiki.views.view_page'),

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• Django's makemessages creates a lot of fuzzy entries

  - by jack

  Each time I added some strings to a Django string, I run "django-admin.py makemessages -all" to generate .PO files for all locales. The problem is even I only added 5 news strings, the makemessages command will make 50 strings as fuzzy in .PO files which brings a lot of extra work for our locale maintainers. This also makes the entire i18n unusable before they manually revise those fuzzy strings.

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