I am using Django and Python to write a website. In one webpage, I have an HTML form, with a set of radio buttons and a submit button. On form submission, I want to verify that a radio button has in fact been selected, rather than all radio buttons left black as is default. One way of doing this is to do the check on the server side. I would check the POST data, and see whether the relevant field, indicating the selected radio button, has been set. If this field has not been set, then I would return to the same webpage, and display the message "Please try again". This works fine for me. However, this seems a bit of an overkill. Is there any way I can do this same check in Javascript (jQuery), and return this same webpage and error message?

I've got a comment form in which I'd like to display a CAPTCHA message if the user has entered more than a certain number of comments in the past 24 hours, but otherwise just let them post. I'm using the django-recaptcha module which was very easy to integrate for a simple form. For this form I've got a simple CommentForm type which defines fields for the comment text (CharField) and the CAPTCHA field (ReCaptchaField). Would I be able to use this in both cases (with/without CAPTCHA) and just give some attribute to the form to not include the reCAPTCHA field so that form.is_valid() would return True despite the absence of the CAPTCHA field?

I have an export file which contains a bunch of serialised Django models. I use this to implement an import/export feature for my DB. The problem is, some of my customers have upgraded their system, including running several South migrations, and their export file is now out-of-date. One solution I'm considering is to import the serialised objects, upgrade them in some way using South (since the full migration history is present in the DB), then write them in their upgraded form. Question Is there any way to do what I'm describing using South? A simple way to run South migrations on "in-memory objects" in some way could also work. Also, if anyone has other suggestions for dealing with this issue, I'm open to hear them. Thanks!

I have a Django formset in which I render four instances of a form. Each form in the formset has two fields, but I want the last (4th) instance to only show/input one field. How can I do this, or is there a better way? I tried limiting the formset to three fields and making the fourth instance its own form, but I need to validate that field1 against the field1 fields in the formset. I couldn't see how to validate a form against a simultaneously submitted formset. views.py: FormSet = formset_factory(MyForm, formset=BaseMyFormSet, extra=4) .html: <form action="" method="post">{% csrf_token %} {{ formset.management_form }} {{ formset.non_form_errors }} <div> {% for form in formset %} {% for field in form %} {{ field.errors }} {{ field.label_tag }}: {{ field }} {% endfor %} {% endfor %} </div> <p><input type="submit" value="Submit" /></p> </form> The formset has two fields in forms.py: class MyForm(forms.Form): # field1 # field2 How do I make it so the first three forms in the formset have two fields, but the last only contains field1?

I'm previously used ForeignKey. Model class Phone_request_list(models.Model): who = models.IntegerField(null=True) whose = models.ForeignKey(User) View user_id = request.user.id uuid = request.GET.get('uuid') profile_id = profiles.objects.get(uuid=uuid).user_id p,created = Photo_request_list.objects.get_or_create(who=user_id,whose_id=profile_id) p.save() but now I want to change my model to manytomany field class Phone_request_list(models.Model): who = models.IntegerField(null=True) whose = models.ManyToManyField(User) This time how can I check whose with who in get_or_create. Please help me.

I have a case where I get an CET datetime (via my API) and I want to save it in my django database. When I do this I always get a runtime warning: datetime.fromtimestamp(last_content_update) When I add the replace part I don't get the error but my date is not correct (1h shift): datetime.fromtimestamp(last_content_update).replace(tzinfo=utc) Any idea how I can load my datetime timezone aware? Thanks!

I use signals for things that should always be done when an object is deleted, saved, updated, etc. However, there are times when I don't want to call my save signals, so I use Model.objects.filter(id=instance.id).update(field=value) instead of the instance's save method: instance.save() In the case of deleting objects, there are also times when I don't want to call the delete signals, but I haven't found a way to avoid calling them. Is there a way??

I've noticed that when i run python manage.py collectstatic --noinput users start seeing scrambled pages. After following on this, i found out that during the process i get 404 on css files, hence the scrambled view. I've read the docs on Heroku regarding maintenance mode and deploying process, and nothing indicates that i need to turn maintenance mode on when i do a deploy with collectstatic. The process of collecting static files is quite slow(~20 mins). I'm using django-pipeline to minify and combine the static files (with hashes),and then upload them to Amazon S3. Is this a normal behaviour? Or am i doing something wrong? Is there any way to deploy, with collectstatic, without taking the site down?

As the title states, I am lost here because I can upload files to MEDIA_ROOT via the site, but when I attempt to serve them I get a 404 error. The most annoying part is that this worked for ages, now something changed and it's broken. I can't quite seem to debug what is wrong with the current setup. Any ideas/suggestions? urls.py from django.conf import settings from django.conf.urls.static import static urlpatterns = patterns('', url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT}), ) + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) settings.py MEDIA_URL = '/media/' MEDIA_ROOT = 'kittens/' On the disk drwxr-xr-x 0 user user 0 Mar 11 11:00 kittens/ -rwxr-xr-x 0 user user 22561 Oct 5 19:17 kittens/file.txt* In the browser Page not found (404) Request Method: GET Request URL: http://192.168.../media/file.txt "file.txt" does not exist python manage.py runserver [11/Mar/2014 15:00:43] "GET /media/file.txt HTTP/1.1" 404 1629 python manage.py shell IPython 1.1.0 -- An enhanced Interactive Python. In [1]: from django.conf import settings In [2]: settings.MEDIA_ROOT Out[2]: 'kittens/' In [3]: settings.MEDIA_URL Out[3]: '/media/' In [8]: os.path.join(settings.MEDIA_ROOT, 'file.txt') Out[8]: 'kittens/file.txt' In [9]: os.path.exists(os.path.join(settings.MEDIA_ROOT, 'file.txt')) Out[9]: True

I have a Django app running in Heroku with GUnicorn, I have 1Xdyno and just found that you can set your WEB_CONCURRENCY. What's the optimal WEB_CONCURRENCY?

I am having this weird problem accessing ManyToManyField. I have following models. class Link(models.Model): title = models.CharField(max_length = 200) url = models.URLField(unique = True) tags = models.ManyToManyField(Tag) creation_date = models.DateTimeField(auto_now_add = True) user = models.ForeignKey(User) likes = models.ManyToManyField(User, related_name = "%(app_label)s_%(class)s_user_likes") dis_likes = models.ManyToManyField(User, related_name = "%(app_label)s_%(class)s_user_dis_likes") class Meta: abstract = True class URL(Link): preview_image = models.URLField() preview_heading = models.CharField(max_length = 100) preview_content = models.CharField(max_length = 100) When I try to access URL.objects.get(pk=1).likes.all(), I get Cannot resolve keyword '' into field. Choices are:... error. URL.objects.get(pk=1).user and URL.objects.filter(likes=auser, pk=1) works fine.

I know it's possible to manipulate a helper in a view : http://django-crispy-forms.readthedocs.org/en/latest/crispy_tag_forms.html#manipulating-a-helper-in-a-view But is it possible to manipulate a helper in a class based view (UpdateView, CreateView)?

I think I'm encountering a weird bug in Windows 8.1 trying to use django-admin.py (and any script really) in Powershell. I've successfully installed Python 2.7.6, and have added C:\Python27\ and C:\Python27\Scripts to my path. When I try to use django-admin.py or python django-admin.py in Powershell, I get a file not found error. Interestingly, when I use Command Prompt, I am able to use django-admin.py, even without the python prefix.

In terms of price, maintenance, latency, performance etc. I found that webfaction.com is very good but their servers not located in India. How are these ? ctrls hostgater.in godaddy

I learn about being asynchronous when i write code with twisted, but i wonder now how do common web servers process thing asynchronously. As a case of this below: apache get a client request from A, and there maybe some operations block the main process. If apache doesn't do some tricks here, then at the just time another client B send a request , and obviously client B will get no response. Right? I guess, every client request will be processed in a dependent process/thread? And django is a web framework, the question is whether django has the logic about "not blocking", or the work is handled totally by web servers.

i use django make a website . i want to let people create group in my website .so i use html form to let them fill in the info and upload an image as the group logo. as i want to let people preview the logo,so i use ajax upload the picture file first.i add 2 buttons in the page,button1 is for upload picture file in ajax way,button2 is for post the whole form to the server .for the ajax upload picture ,i use this plugin http://malsup.com/jquery/form/ ok here is the code <!doctype html> <html> <head> <script src="jquery-1.10.2.min.js"></script> <script src="jquery.form.min.js"></script> <meta charset="utf-8"> <title>test</title> </head> <body> <form id="test" action="/accounts/signup/" method="post"> <input type="text" id="text" name="text" /> <input type="file" name="file" id ="file" /> <a href="javascript:;" class="btn_gray_light" id="tnpicsubmit"><span >submitpicture</span></a> <a href="javascript:;" class="btn_celadon_large signup"><span>confirm</span></a> </form> <script language="javascript" type="text/javascript"> $("document").ready(function(){ $("#tnpicsubmit").click(function(){ $("#form").submit(function(){ var options={ url:"/article/nodetpic/", type:"POST", datatype:"json", }; $("#form").ajaxSubmit(options); return false; }).submit(); }); $(".signup").click(function(){ $("#test").submit() }); }) </script> </body> </html> this code works,but not well. because ,the first time i choose one picture,and click the button id #tnpicsubmit,yes the picture uploaded to my host,i through every thing is ok .then i test the 2nd time,and this time ,the same picture file ,upload 2 times,i find 2 ...

I'm trying to use get_initial within a FormView to pre-populate the field "Subject" to have a "Wholesaler is interested" text, but it's not working. If it matters, I'm using Django 1.5, Python 2.7. Here is my code. Am I missing a step? class ContactView(FormView): """ ContactForm is a ModelForm """ template_name = 'core/contact-us.html' form_class = ContactForm success_url = reverse_lazy('products:index') initial = {'subject': 'I am interested in making a wholesale purchase'} def get_initial(self): """ Returns the initial data to use for forms on this view. """ return self.initial def get_form_kwargs(self): kwargs = {'initial': self.get_initial()} return kwargs def form_valid(self, form): cd = form.cleaned_data contact = Contact.objects.create(**form.cleaned_data) if contact: print 'contact created' else: print 'not created' if contact is not None: # send contact email msg = contact_email(name=cd['name'], email=cd['email'], subject=cd['subject'], message=cd['message']) msg.send() # Add success message msg = 'Your contact email has been successfully sent. We look forward to speaking with you.' messages.info(self.request, msg) return super(ContactView, self).form_valid(form) EDIT I removed the get_initial and get_form_kwargs but still no luck. Here is a paste of my Form if that helps. Do I need to attach the initial for what I would like to put in the Form in some way? Thanks for your help! class ...

I want to run some custom SQL when Django connects to the sqlite database. The purpose is to enforce foreign key constraints with PRAGMA foreign_keys = ON; Running initialization SQL would be easy to do with the MySQL backend: DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', ... 'OPTIONS': { "init_command": "SET storage_engine=INNODB", } } } But it doesn't work with the sqlite3 backend: TypeError: 'init_command' is an invalid keyword argument for this function What is the cleanest solution here?

I have two projects, one works on Django and Python2.6, and the other uses Pyramid and Python3.3. Is it possible to configure Apache the way that both applications could run together? On the Apache side I'm using mod_wsgi. I know that for different Python versions mod_wsgi should be compiled with support of these versions. So the question is - is it possible to have two instances of apache running with two different mod_wsgi modules compiled for two different Python versions?

I am working with a django model which stores currency values as integers. i.e. GBP22.35 gets stored as 2235. When that model gets rendered as a form, I need to be able to associate a widget with that integer field so can be edited as though it were a float value (i.e. to two decimal places - 22.35) and is validated as such. form.save() then needs to save the native integer value to the db. I've tried creating a custom FormField/Widget pair which involves dividing by 100 in the widgets render and multiplying back up in the fields to_python method, but it all goes awry if there is an error on the form. The widget keeps re-dividing the value. I realise this could be avoided by using float/decimal model fields but that is not an option in this case. Is this something people have done before? Any pointers? Thanks.

I'm trying to retrieve a QuerySet: models = MyModel.objects.filter(starttime__lt=sometime) When running using VS2013, this for some reason executes the query (taking forever, I later chain more filters..). I know the query executes because when it finishes, the results are available in the Locals window. When I run this outside VS2013, it runs correctly. How do I configure (the debugger?) to not do this?

I have a model where basically i am Tracking users' activities. I want to know what is the page the user have accessed MOST. Here are my modals. class Visitor(models.Model): session_key = models.CharField(max_length=40, primary_key=True) user = models.ForeignKey(User, related_name='visit_history', null=True, editable=False) .... class Pageview(models.Model): visitor = models.ForeignKey(Visitor, related_name='pageviews') url = models.CharField(max_length=500) method = models.CharField(max_length=20, null=True) view_time = models.DateTimeField() Here is my query. Pageview.objects.values('visitor__user__first_name', 'visitor__user__last_name', 'visitor__user').annotate(url_count=Count('url')).annotate(url_count_unique=Count('url', distinct=True)) Here i am getting users number of urls visited, and number of unique urls visited. Here i also want to know which is the url user have visited the most? I hope the question is clear, if not let me know.

I have the following javascript array at the client side - ["27", "28", "29", "30"] I am sending it to server as follows - $.post( '/save/mempks/1/', {'data':elmArry}, function(data){alert(data);}); On the server, I have put a debugger to see how, the data is received, and I see this unusual behaviour - ipdb> request.POST <QueryDict: {u'data[]': [u'27', u'28', u'29', u'30']}> ipdb> request.POST.items() [(u'data[]', u'30')] ipdb> request.POST['data[]'] u'30' All I want to do is extract, the numbers 27 to 30 and save it in a list. Where are the numbers 27, 28, 29, and 30 are getting lost? Could anyone suggest, why this behavior?

I'm trying to use jQuery Masonry with Bootstrap 3 in a Django app, but I'm not getting the results expeted. Everytime the height of a picture is larger than the others in the column, it happnes like in the picture: This is my code: <script src={% static "js/jquery.masonry.min.js" %}></script> <script> $(function(){ var $container = $('#container'); $container.imagesLoaded( function(){ $container.masonry({ itemSelector : '.item' }); }); }); </script> And HTML <div class="container"> {% for key, values in prodmatrix %} <div class = "span3 item"> <div class="product-box feed masonryImage"> <img src="{{ STATIC_URL }}{{values.1.0}}" /> <a href="{% url 'product_detail' slug=values.3.0 %}" class="title">{{ values.0.0 }}</a><br/> <p> {{ values.0.0 }} </p> </div> </div> {% endfor %} </div>

I need a function that starts several beanstalk workers before starting to record some videos with different cameras. All of these work in beanstalk. As I need to start the workers before the video record, I want to do a subprocess, but this does not work. The most curious thing is that if I run the subprocess alone in a different python script outside of this function (in the shell), this works! This is my code (the one which is not working): os.chdir(path_to_the_manage.py) subprocess.call("python manage.py beanstalk_worker -w 4",shell=True) phase = get_object_or_404(Phase, pk=int(phase_id)) cameras = Video.objects.filter(phase=phase) ########################################################################### ## BEANSTALK ########################################################################### num_workers = 4 time_to_run = 86400 [...] for camera in cameras: arg = phase_id +' '+settings.PATH_ORIGIN_VIDEOS +' '+camera.name beanstalk_client.call('video.startvlcserver', arg=arg, ttr=time_to_run) I want to include the subprocess because it's annoying to me if I have to run the beanstalk workers on each video record I wanna do. Thanks in advance.