Re: Can't submit picture through generic view form

[Jian Chang]

Your form need a attribute named enctype, and the value is
multipart/form-data, try it.
在 2012-5-19 晚上10:55，"Michael Ackerman" 写道：
>
> I have a generic view:
>
> class create_ticket(CreateView):
> model = ticket
> form_class = ticket_form
> template_name = "create_ticket.html"
> success_url = "/tickets/thanks/"
>
> and a form:
>
> class ticket_form(ModelForm):
> class Meta:
> model = ticket
> fields = ('title','description','picture')
>
> But when I try to submit the data, it get a "This field is required" for
the picture, so I think I'm missing something in order to take in the
picture.
>
> and for reference:
>
> #create_ticket.html:
> {% extends "base.html" %}
> {% block main %}
> {% csrf_token %}
> {{ form.as_table}}
> 
> 
> {% endblock %}
>
> #models.py
> class ticket(models.Model):
> title = models.CharField(max_length = 100)
> date_created = models.DateTimeField(auto_now_add=True)
> description = models.TextField()
> ranking = models.PositiveIntegerField(default=0)
> picture = models.ImageField(
> upload_to ='pictures' )
>
> def __unicode__(self):
> return self.title
>
> All help is appreciated, thank you.
>
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Re: login or login_decorator issue

[Jian Chang]

what's your  '@login_required(login_url='/login/')'?
seems like the decorator leads to the redirection.

2012/8/8 mapapage 

>  for the login I do (username must be the id field(pk) of an 'owners'
> table and password is a  field of the same table):
>
> def login_user(request):
> c = {}
> c.update(csrf(request))
> state = ""
>
> if request.POST:
> password = request.POST.get('password')
> id = request.POST.get('id')
> try:
> user = Owners.objects.get(id = id)
> if user:
> if user.simple_check_password(password):
> url = reverse('main', kwargs={ 'user_id': user.id })
> return HttpResponseRedirect(url)
> else:
> state = 'Incorrect username or password'
> else:
> state = 'Incorrect username or password'
> except Exception as e:
> state = 'Incorrect username or password'
> print state
>  return render_to_response('index.html', locals(), context_instance=
> RequestContext(request))
>
> and I also define:
>
> def set_password(self, raw_password):
> self.password = make_password(raw_password)
>
> def check_password(self, raw_password):
> """
> Returns a boolean of whether the raw_password was correct. Handles
> hashing formats behind the scenes.
> """
> def setter(raw_password):
> self.set_password(raw_password)
> self.save()
> return check_password(raw_password, self.password, setter=None)
>
> def simple_check_password(self,raw_password):
>
> return raw_password == self.password
>
> and at least it seems to me that it works, I mean the user logs in to the
> main.html page.
>
>
>
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Re: Separate file stream from request input stream while upload

[Jian Chang]

是不是可以用异步来完成？ ajax upload

2012/8/8 Russell Keith-Magee 

> On Wed, Aug 8, 2012 at 2:42 PM, 春燕 李  wrote:
> > Thanks !
> >
> > In my application, I want to upload  image files(such as *.iso) which
> > are always large, it will take long time before the uploading
> > completed. During this time, I cannot  send out other request on
> > current page, because a new request will refresh the current page and
> > make the uploading failed. My aim is that after I click the Upload
> > button, the file uploading is processed in backend, I can send out
> > other request  simutanously. Firstly , I tried to get the stream, and
> > write  new handler to replace the exsiting processing. But after I
> > read the source code , I find that the input stream got by django is
> > activity limited,  it only can be read once, once reading is started,
> > the current page shouldn't be refresh, or else the stream reading will
> > be failed.
> >
> > Is it realizable to  uploading backend and simutanously send other
> > request on current page, and the uploading won't interrupt because of
> > leaving this page?
>
> Not really. This isn't something that's Django specific -- it's a
> general problem with web browsers. Web browsers make requests.
> Background requests are still requests, and they need to happen in the
> context of a page that is in the foreground. If you change the
> foreground page, you're going to stop any background activity that is
> underway.
>
> That said, there might be something you can do by breaking the
> background task into a large number of smaller requests using the HTTP
> Range header, and then recombining the file on the server side from
> all the individual chunks. That won't stop the background request from
> being killed, but it will give you an opportunity to resume the upload
> on a new page.
>
> However, this isn't something where I can point you at a simple page
> of documentation and say "just call these three lines of Python". What
> you're proposing isn't a simple task. You're going to need to become
> very familiar with the HTTP specification, and work out how to put the
> pieces together yourself.
>
> Yours,
> Russ Magee %-)
>
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Re: Problems with simple "hello world" test - "ImportError: Could not import settings"

[Jian Chang]

"d:/wwwroot/djtest/djtest/" was already in system path, so I think you
should set DJANGO_SETTINGS_MODULE like this:
os.environ.setdefault("DJANGO_SETTINGS_MODULE",
"settings")

try it![?][?][?]

2012/9/11 DJ-Tom 

> Am Dienstag, 11. September 2012 00:43:44 UTC+2 schrieb Mike Dewhirst:
>
>>
>> Try dropping this down to "djtest.settings". Also make sure you have a
>> file in each of your folders called __init__.py
>>
>> This tells Python the folder is part of the package.
>>
>
> Sorry - but this does not help. Just to be sure that I'm not missing
> anything essential, this is all I have so far:
>
> d:\djtest\
>manage.py
>data.sql
>\djtest\
>   __init__.py
>   settings.py
>   urls.py
>   wsgi.py
>
> Am I correct to assume that this should be sufficient to call at least the
> /admin/ interface?
>
> I have activated this in urls.py:  url(r'^admin/',
> include(admin.site.urls)),
>
> And this in settings.py: 'django.contrib.admin',
>
> But as django does not seem to be able to find settings.py... hm
>
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<<330.gif>>

Re: authentication in django

[Jian Chang]

decorator?

2011/8/27 NISA BALAKRISHNAN 

> Hi,
>
> I am new to django.
> i am making a django app for a logged in user to add movies he
> watched.
>
> how can i block a logged in user from accessing the log in form ?
> the url .../accounts/login
>
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Re: Wired image file upload problem

[Jian Chang]

size limitation?
it is wired.
[?]

2011/9/28 @@ 

> Hi
> I got a image can't upload while other image works fine, and i use paint
> open this image and save it as another file, then the other file can be
> uploaded.
> The debug page shows the request.FILES is None.
> The attachment is the image can't upload. Sorry for sending a mail with
> attachment.
>
> Is this problem related to the image exif info?
> Thanks.
>
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<<342.gif>>

Re: can't get STATICFILES to work (Django dev version)

[Jian Chang]

Did you set Debug=False?
在 2011-9-27 上午4:21，"nara" 写道：
> I am having trouble getting STATICFILES to work. I have read the docs,
> and followed the instructions, but I never get my css files to load.
> My current workaround is to put all the css inline in my template
> file, but that should not be a permanent solution.
>
> I am running the django dev version, and I am using the built-in
> server. Here are my changes:
>
> 1. I placed my media (css) files under /home/nara/media
> 2. I added '/home/nara/media' under STATICFILES_DIRS
> (django.contrib.staticfiles is already in INSTALLED_APPS)
> 3. I added {{STATIC_URL}} (no spaces) in front of the reference to
> static files in my template file.
> 4. I restarted the server.
>
> No further changes. I don't have additional copies of the static files
> anywhere else, such
> us under my project, or app.
>
> Looking at the result in firebug within firefox, I get an HTTP
> response of 200 on my css files
> (happen to be css/blueprint/screen.css and print.css), but the files
> are null. Clearing
> the cache, restarting Firefox etc. do not help.
>
> I have been fighting this issue for several days now, and have tried
> many things,
> but the above description is for my current state.
>
> Thanks
> Nara
>
>
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Re: Multiple forms with same name.

[Jian Chang]

Fisrt,it's not multiple forms as your description.
You can use request.GET.getlist('text','') to get the every text in one list
在 2011-9-26 下午11:34，"sakthi" 写道：
> In a page i made multiple text forms with the same name. i cannot get
> the values of all the forms. only the last form's value is available.
>
> my html looks like this
>  
> 
> 
> 
> 
> 
>
> how can i get the values of all the forms having the same name.
>
> Thank you.
>
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Re: Multiple forms with same name.

[Jian Chang]

request.GET.getlist('txt','')
sorry!
在 2011-10-2 上午4:37，"Jian Chang" 写道：
> Fisrt,it's not multiple forms as your description.
> You can use request.GET.getlist('text','') to get the every text in one
list
> 在 2011-9-26 下午11:34，"sakthi" 写道：
>> In a page i made multiple text forms with the same name. i cannot get
>> the values of all the forms. only the last form's value is available.
>>
>> my html looks like this
>> > 
>> 
>> 
>> 
>> 
>> 
>>
>> how can i get the values of all the forms having the same name.
>>
>> Thank you.
>>
>> --
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>>

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Re: Problem with get_absolute_url

[Jian Chang]

yes, you need the decorator @models.permalink

2011/11/15 Rubén Dugo Martín 

> You forget the decorator:
>
> @models.permalink
> def get_absolute_url(self):
>   return ('blog_post_detail', None, {
>'year': self.publish.year,
>'month': self.publish.strftime('%b').lower(),
>'day': self.publish.day,
>'slug': self.slug
> })
>
> 2011/11/15 Fredrik Grahn 
>
>> Hello,
>> I'm trying to get my head around some of the basics of Django and I've
>> run into the strangest problem. Can't figure out what the problem is,
>> the URL from my get_absolute_url() function in my model just refuses
>> to turn into a proper URL. I'll post the code so hopefully it will be
>> obvious for someone with more experience.
>>
>> My url :
>> url(r'^(?P\d{4})/(?P\w{3})/(?P\d{1,2})/(?P[-\w]
>> +)/$',
>>   PostDetailView.as_view(),
>>   name='blog_post_detail'
>> ),
>>
>> My generic view:
>> class PostDetailView(DetailView):
>>queryset= Post.objects.filter(status__gte=2)
>>context_object_name = 'post_detail'
>>template_name   = 'blog/post_detail.html'
>>
>> and finally, the get_absolute_url() function in my model.
>>
>> def get_absolute_url(self):
>>   return ('blog_post_detail', None, {
>>'year': self.publish.year,
>>'month': self.publish.strftime('%b').lower(),
>>'day': self.publish.day,
>>'slug': self.slug
>> })
>>
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>>
>>
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Re: Cache timeout

[Jian Chang]

u can test by yourself.
yes, i don't know the answer, neather
在 2011-11-27 上午12:08，"Addy Yeow" 写道：

> If I use cache_page() decorator for my view function, will the TIMEOUT be
> able to take precedence over CACHE_MIDDLEWARE_SECONDS?
>
> In my settings.py,
>
> CACHES = {
> 'default': {
> 'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
> 'LOCATION': os.path.join(WEB_ROOT, "django_cache"),
> 'TIMEOUT': 5184000,
> }
> }
> CACHE_MIDDLEWARE_SECONDS = 86400
>
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Re: OnChange or OnBlur event in javascript to run python function in Django and return the results???

[Jian Chang]

Yes, you need ajax
在 2012-12-13 中午12:29，"Mario Gudelj" 写道：
>
> Hey,
>
> First you need to add some id to that field and then use a jQuery
selector to get the value from it on blur or input:
>
> $('#some_id).on("blur", function(){
>//make your ajax call here
> });
>
> To make the Ajax call you can use jQuery's .post() or .get(). I guess
post method would make a bit more sense in this case. Look up
http://api.jquery.com/jQuery.post/
>
> So your JS looks something like this now:
>
> $('#some_id).on("blur", function(){
> $.post('your-url/', function(data) {
>$('.result').html(data); // do whatever you want with the
returned data
>  });
> });
>
> You need to know how you want to process your data in JS, because you can
return a string or JSON.
>
> At Django's end you need to create your url in the view and create a view
that captures that post.
>
> Your view could look like this:
>
> @csrf_exempt
> def your_view(request):
> if request.is_ajax() and request.method == 'POST':
> captured_post_parameter = request.POST.get('you_field_name')
> # blah blah - do your logic here
> # you can return either HttpResponse(response) or use simplejson
to return json response
>
> That's really all there is to it. I hope it helps!
>
> -mario
> www.zenbookings.com
>
>
>
>
> On 13 December 2012 14:06, Murtaza  wrote:
>>
>> Hello All,
>>
>> I have developed an internal tool with Django and Python in the backend,
now it seems like I have hit a road block.
>>
>> I am very new to Javascript. And the site has to be very dynamic and it
needs to be able to do something like the following:
>>
>> In the input box,
>>
>>   1. The user has entered data
>>
>>   2. When the user moves out from the box, it runs an onBlur or onChange
or some event function which calls a python code that takes some arguments,
and takes other data from the page and Inserts that data in the database
and saves.
>>
>>   3. It does that with out changing the url/refreshing the page or
anything just staying on the same page.
>>
>> Any ideas how to accomplish this with Python and Django.
>>
>> Thanks, any help is appreciated.
>> Murtaza Pitalwala
>>
>>
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Re: only utf-8 letters regex pattern

[Jian Chang]

you can use unicode.

2013/1/16 armagan 

> Turkish chars

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Re: Database Transaction

[Jian Chang]

you mean two different databases?
you can't do the transaction between two different databases.
Anyway you can control the transactions by yourself.
like:
commit all or rollback all if all actions are ok or not,

2013/1/21 Sandeep kaur 

> Hello Django users,
> I have created a django application whose database is totally
> different(different foreign keys, fields, tables etc.) from that of
> old application. But now when I have created the application I require
> the data from old application too. How can I do the data transaction
> among the two applications?
> Your help will be appreciated.
> Thank you.
>
> --
> Sandeep Kaur
> E-Mail: mkaurkha...@gmail.com
> Blog: sandymadaan.wordpress.com
>
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Re: Goodbye, Malcolm

[Jian Chang]

Rest in peace

2013/3/21 Ernest Mundia 

> M.H.S.R.I.P
>
>
> On Wed, Mar 20, 2013 at 6:16 PM, Javi Romero wrote:
>
>> El martes, 19 de marzo de 2013 18:01:39 UTC+1, Jacob Kaplan-Moss escribió:
>>
>> Hello fellow Djangonauts,
>>>
>>> We have difficult news: Malcolm Tredinnick has passed away.
>>>
>>> Malcolm was a long-time contributor to Django, a model community member,
>>> a brilliant mind, and a friend. His contributions to Django — and to
>>> many other open source projects — are nearly impossible to enumerate.
>>> Many on the core Django team had their first patches reviewed by him;
>>> his mentorship enriched us. His consideration, patience, and dedication
>>> will always be an inspiration to us.
>>>
>>> To say we'll miss him is an understatement.
>>>
>>> Our thoughts are with Malcolm's friends, colleagues, and family at this
>>> difficult time.
>>>
>>> This came as quite a shock, and we're still sorting out details. We'll
>>> update our blog,
>>> https://www.djangoproject.com/**weblog/2013/mar/19/goodbye-**malcolm/,
>>>
>>> once we know the details of how you can express your condolences to
>>> Malcolm's friends and family.
>>>
>>> — The Django Core Team
>>>
>>
>> R.I.P. Thanks for all you've done for the community.
>>
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>>
>
>
>
> --
> Ernest Mundia
> "Keep lookingDon't settle"
>
>
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Re: PostgresSQL or MySql with django?

[Jian Chang]

postgres!
do what you like

2013/3/18 frocco 

> Hello,
>
> What is the recommended database for django?
>
> I have used MySQL, but am interested in Postgres.
>
> Thanks
>
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Re: need help with calling following complex query

[Jian Chang]

Using raw sql is a better idea

2011/7/11 Jonas Geiregat 

>
>
> In order to find the places in near by area I want to make following
> mysql query. but I am not sure how should I translate it using django
> models and managers.
>
>
> You could execute the raw sql query string, see:
> https://docs.djangoproject.com/en/dev/topics/db/sql/
> for more information on the subject. Seeing the complexity of the query and
> knowing it's a good working version why should you even bother translating
> it to django's ORM framework ?
>
>
> orig.lat = x
> orig.lon = y
>
> "SELECT  destination.*,
> 3956 * 2 * ASIN(SQRT(  POWER(SIN((orig.lat - dest.lat) * pi()/180 /
> 2), 2) +
> COS(orig.lat * pi()/180) *  COS(dest.lat * pi()/180) *
> POWER(SIN((orig.lon -dest.lon) * pi()/180 / 2), 2)  )) as
> distance
> FROM place as dest
> WHERE  dest.longitude
> BETWEEN lon1 and lon2
> AND dest.latitude
> BETWEEN lat1 and lat2
> "
>
> the model which talks to database is called Place in my case.
>
> Thank you all for the help,
> sanket
>
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>
>
> Jonas Geiregat
> jo...@geiregat.org
>
>
>
>
>
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Re: something about django mysql database long connection

[Jian Chang]

Try DBUtils
http://www.webwareforpython.org/DBUtils/Docs/UsersGuide.html

2011/7/13 Kejun He 

> hi,
> I am sorry. My English is very bad.
>
> Yes, i want to make persistent databases connection on each session.
>
>
> and yesterday i try to modify the  code on
> "site-packages\django\db\__init__.py"
>
> 
> def close_connection(**kwargs):
> for conn in connections.all():
> conn.close()
> #signals.request_finished.connect(close_connection) <---
>
> 
>
> could it work?
>
> regards,
> he
>
>
>
>
> On Mon, Jul 11, 2011 at 7:31 PM, Cal Leeming [Simplicity Media Ltd] <
> cal.leem...@simplicitymedialtd.co.uk> wrote:
>
>>
>>
>> On Mon, Jul 11, 2011 at 4:49 AM, oops  wrote:
>>
>>> hi,
>>> Now, i am doing a django project, and use models to do all operation
>>> about data in mysql db.
>>>
>>> and i think that it would connect to database whenever  do some
>>> operation like 'XXX.objects.all()' , may be it would cast much of
>>> resource on database connection. So i need a connection never being
>>> desconnected.
>>>
>>
>> At as best guess (as the question is somewhat broken), are you asking how
>> to make persistent connections which are guaranteed to never time out in a
>> single session?
>>
>> Could you clarify a little more on your question please?
>>
>> Cal
>>
>>
>>>
>>> Does django has this function?  And how to do for it??
>>>
>>> thank you
>>> rgs,
>>> he
>>>
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>>>
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Re: blog breack after 10 post x__x

[Jian Chang]

django doesn't have,
but you can extent  based on django.core.paginator.Paginator.The attachment
is what i use, you can change it by your needs



2011/7/16 Kase 

> realy i dont know how to expres this..
>
> i need this
> (is a blog app)
>
> 1) post
> 2)post
> 3)post
> ...
> 10)post
> page 1,2,3,4,5,6,7,8.last
>
> when clic 2  list of post are
> 11)post
> 12)post
> 
> 20)post
>
> django  have somthing to do this in the easiest
>
> my code is the (obius)
>
> {%for x in post%}
> {{x.title}}
> {{x.post}}
> by:{{x.user.username}} about  {(x.time|timesince)} ago
> {%endfor%}
>
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Re: blog breack after 10 post x__x

[Jian Chang]

2011/7/16 Jian Chang 

> django doesn't have,
> but you can extent  based on django.core.paginator.Paginator.The attachment
> is what i use, you can change it by your needs
>
>
>
>
> 2011/7/16 Kase 
>
>> realy i dont know how to expres this..
>>
>> i need this
>> (is a blog app)
>>
>> 1) post
>> 2)post
>> 3)post
>> ...
>> 10)post
>> page 1,2,3,4,5,6,7,8.last
>>
>> when clic 2  list of post are
>> 11)post
>> 12)post
>> 
>> 20)post
>>
>> django  have somthing to do this in the easiest
>>
>> my code is the (obius)
>>
>> {%for x in post%}
>> {{x.title}}
>> {{x.post}}
>> by:{{x.user.username}} about  {(x.time|timesince)} ago
>> {%endfor%}
>>
>> --
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>>
>>
>

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pagination.py
Description: Binary data

Re: django.core.urlresolvers.reverse capturing group before include behavior

[Jian Chang]

try this: reverse("mysites.views.index")

2011/7/16 Squeesh 

> I have run into an issue using reverse() to lookup named urls with
> capturing groups before an include().
>
> Code:
>
> mysite/urls.py
> from django.conf.urls.defaults import *
>
> urlpatterns = patterns('',
>url(r'^$',  'views.index',
> name='root'),
>url(r'^(?P\w+)/test/',   include('test.urls',
> namespace='test')),
> )
> end mysite/urls.py
>
>
> mysite/test/urls.py
> from django.conf.urls.defaults import *
>
> urlpatterns = patterns('',
>url(r'^$',  'test.views.index',
> name='index'),
> )
> end mysite/test/urls.py
>
>
> mysite/views.py
> from django.core.urlresolvers import reverse
> from django.http import HttpResponse
>
> def index(request):
># Works: returns '/(?P\w+)/test/'
>test_url = reverse('test:index')
>
># NoReverseMatch: Reverse for 'index' with arguments '('slug',)'
>#and keyword arguments '{}' not found.
>test_url = reverse('test:index', args=['slug'])
>
># NoReverseMatch: Reverse for 'index' with arguments '()'
>#and keyword arguments '{'some_slug': 'slug'}' not found.
>test_url = reverse('test:index', kwargs={'some_slug': 'slug'})
>
># Desired output is '/slug/test/'
>
>return HttpResponse("""
>root index
>Test
>""".format(test_url=test_url))
> end mysite/views.py
>
>
> mysite/test/views.py
> from django.http import HttpResponse
>
> def index(request, some_slug):
>return HttpResponse('test index: %s' % some_slug)
> end mysite/test/views.py
>
>
> reverse('test:index') will only resolve if you don't pass it any
> arguments. And then the result is the original regex... The desired
> behavior is for it to either accept args or kwargs of 'slug' and
> return '/slug/test/'.
>
> Is there a setting that I am missing to allow for this behavior? Is
> this a known bug?
>
> Any information would be greatly appreciated.
>
>
> Derek
>
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Re: Is there a way to insert data from a csv file into my database?

[Jian Chang]

Using copy_from is easy to solve it. And if you want to a get a speical
format file from that csv, use a scirpt to handle it.
http://www.initd.org/psycopg/docs/cursor.html#cursor.copy_from
2011/7/25 nixlists 

> On Sun, Jul 24, 2011 at 2:46 PM, Jarilyn Hernandez
>  wrote:
> > Hi, Thanks for the response. My problem is that I have my tables created
> on
> > django. All I want is to import some data from a csv file to these tables
>
> I am using HeidiSQL with MySQL for this, but a script could do much
> more than simple single table loads.
>
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Re: Using Form Elements Widgets direclty in HTML

[Jian Chang]

Since you don't want to use forms class, you can write elements in your
templates directly.

2011/8/9 Hayyan Rafiq 

>  Hi I wanted to know if there was a way in which we could use widget
> directly in an HTML file
> By widget i mean elements of a form such as input boxes,calendars,Buttons
> etc without using the forms class.
>
> For example A default normal html input box is :
> 
> I wanted to replace it with a fancier (more interesting and professional)
> input box..
> any suggestions on how i could do that would be appreciated..
>
> I  also wanted to use a table in my HTML to display contents from my DB. Do
> you guys have anything in mind which might be useful for me...
> I currently am generating the table dynamically using  tag
>
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Re: How to order "links" in the Admin?

[Jian Chang]

you should figure out what it is based on to order these urls.

i use time stamp to order them.


2011/8/10 Andre Lopes 

> Hi,
>
> I'm testing Django for my first project using it.
>
> I have a model like this:
> 
> from django.db import models
> import datetime
>
> class Directory(models.Model):
>   website_name = models.CharField(max_length=200)
>   website_url = models.CharField(max_length=200)
>   website_position = models.IntegerField()
>   pub_date = models.DateTimeField('date published')
> 
>
> Basicaly this model is for storing URL's, but I need to order them,
> and for that I use "website_position" to control if the link will be
> at the top or at the end or in the middles...
>
> My question is, there is a better way to control the positions of the
> links? Django Admin have any feature that could help to deal with this
> specific case?
>
> Please let me know.
>
> Best Regards,
>
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