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  • Dropdown sorting in django-admin

    - by Andrey
    I'd like to know how can I sort values in the Django admin dropdowns. For example, I have a model called Article with a foreign key pointing to the Users model, smth like: class Article(models.Model): title = models.CharField(_('Title'), max_length=200) slug = models.SlugField(_('Slug'), unique_for_date='publish') author = models.ForeignKey(User) body = models.TextField(_('Body')) status = models.IntegerField(_('Status')) categories = models.ManyToManyField(Category, blank=True) publish = models.DateTimeField(_('Publish date')) I edit this model in django admin: class ArticleAdmin(admin.ModelAdmin): list_display = ('title', 'publish', 'status') list_filter = ('publish', 'categories', 'status') search_fields = ('title', 'body') prepopulated_fields = {'slug': ('title',)} admin.site.register(Article, ArticleAdmin) and of course it makes the nice user select dropdown for me, but it's not sorted and it takes a lot of time to find a user by username.

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  • NSDate & Memory management

    - by iFloh
    Hi, memory management still gives me grief. This time it is an NSDate iVar that I init using NSDate *myNSDate = [[NSDate date] firstDayOfMonth]; with a method call to - (NSDate *)firstDayOfMonth { NSDateComponents *tmpDateComponents = [[NSCalendar currentCalendar] components:NSYearCalendarUnit | NSMonthCalendarUnit | NSEraCalendarUnit | NSWeekCalendarUnit | NSWeekdayOrdinalCalendarUnit fromDate:self]; [tmpDateComponents setDay:1]; [tmpDateComponents setHour:0]; [tmpDateComponents setMinute:0]; [tmpDateComponents setSecond:0]; return [[NSCalendar currentCalendar] dateFromComponents:tmpDateComponents]; } At the end of the init call the retain count is at 1 (Note the iVar is not defined as a property). When I step into the viewWillAppear method the myNSDate has vanished. I tried to do an explicit retain on it, but that only lasts until I update the iVar using the above method again. I though - ok - I add the retain to the return of the function, but that makes the leak analyser throw up an error. What am I doing wrong?

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  • How can I make one Code::Blocks project dependent on another?

    - by George Edison
    I have a workspace with two projects in it. One is a static library (we'll call it Project A). The other is a console app that links with the static library (we'll call it Project B). I went to Project B's properties and checked off Project A as a dependency of Project B. So I make a change to a file in Project A and rebuild Project B. It correctly discovers the changes to the file in Project A and rebuilds Project A. However, when it gets to Project B it says: Target is up to date. Nothing to be done. How can I tell it to run the linker everytime Project A is changed?

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  • Is being a programmer a younger person's job?

    - by Saobi
    After you get old, say past 30 or 40. Can you still keep up with the young coders from your company, those fresh out of school, who can code for 15+ hours on 10 cans of redbulls (most people in Google, Facebook, etc) ? And given the lightning speed with which today's programming frameworks and architectures evolve, can you keep up with the most up to date stuff and be as proficient at them as the next college grad? I know for jobs like unix/c/embedded programming, it might be that the older the better. But for programming jobs in say web development, social media, search engine technology, etc. Do you become less and less competitive career-wise versus youngsters? For example, most coders in Google and Facebook, I believe are under 25 years old. In other words, once you reach a certain age, would it be unwise to continue to be a coder, and is it better to try becoming a project manager or architect?

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  • Import text file crunching library for Java/Groovy ?

    - by devdude
    In a lot of real life implementations of applications we face the requirement to import some kind of (text) files. Usually we would implement some (hardcoded?) logic to validate the file (eg. proper header, proper number of delimiters, proper date/time value,etc.). Eventually also need to check for the existence of related data in a table (eg. value of field 1 in text file must have an entry in some basic data table). While XML solves this (to some extend) with XSD and DTD, we end up hacking this again and again for proprietary text file formats. Is there any library or framework that allows the creation of templates similar to the xsd approach ? This would make it way more flexible to react on file format changes or implement new formats. Thanks for any hints Sven

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  • Modifying NSDate to represent 1 month from today

    - by bmalicoat
    I'm adding repeating events to a Cocoa app I'm working on. I have repeat every day and week fine because I can define these mathematically (3600*24*7 = 1 week). I use the following code to modify the date: [NSDate dateWithTimeIntervalSinceNow:(3600*24*7*(weeks))] I know how many months have passed since the event was repeated but I can't figure out how to make an NSDate object that represents 1 month/3 months/6 months/9 months into the future. Ideally I want the user to say repeat monthly starting Oct. 14 and it will repeat the 14th of every month.

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  • .Net Culture Insensitive Comparisons - Example of when this is needed

    - by Damien
    I am revising for the MCTS example and am on a small section regarding Culture-Insensitive comparisons. I get the principle, you don't two items which are the same (i.e dates) but are displayed differently and hence are pragmatically marked as different. However call me stupid but I am finding it hard to see where I can use it is practice, for example why would you have two different date times, in the same code, in which they are different cultures? The only way to do so would be if you manually override the one of the datatypes cultures and why would you do that? Any example of a real-world application of culturally insensitive comparisons? Cheers

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  • treating json like an array

    - by tawheed
    I was doing some test with json and ran into serveral issues. hope somebody on this mailing list can help out. localStorage[LOC] = JSON.stringify(track); var boy = localStorage[LOC]; alert(boy); This is the data I get back [{"lat":42.5877511,"lng":-71.7873177,"acc":67,"date":"Sat Apr 14 2012 01:03:46 GMT-0400 (EDT)"}] I was wondering how I could access the json objects like we do in a regular array. For debugging purposes I did something like, alert(boy[0].lat); But the result I got back was undefined

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  • AIR: sync gui with data-base?

    - by John Isaacks
    I am going to be building an AIR application that shows a list (about 1-25 rows of data) from a data-base. The data-base is on the web. I want the list to be as accurate as possible, meaning as soon as the data-base data changes, the list displayed in the app should update asap. I do not know of anyway that the air application could be notified when there is a change, I am thinking I am going to have to poll the data-base at certain intervals to keep an up to date list. So my question is, first is there any way to NOT have to keep checking the data-base? or if I do keep have to keep checking the data-base what is a reasonable interval to do that at? Thanks.

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  • Automatically pulling on remote server with Git push?

    - by Vernon
    Here's what I'm trying to do: I have a GitHub repository, a portion of which I'd like to make web viewable. Right now I've cloned the repository on my own server and it works well, but in order to keep it up to date, I have to manually login and pull the latest changes. I'm not sure if this is the best idea (or the best approach), but I'd like the remote server to automatically pull whenever someone pushes to repository. GitHub makes it easy enough to run a script when someone pushes, but I'm not sure how to pull once someone does that. I was using PHP for simplicity, but just doing something like git pull naturally doesn't work because of permissions. Is this a bad idea or is there another way of achieving what I want to do? This seems like a common set up, but I wasn't sure. Thanks.

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  • ASP.NET Dates Deployment Issue

    - by Jonathan Stowell
    Hi guys, I recently bought some webspace with dailyrazor.com. I have deployed an application I have been working on to the server and am currently trying to workout the bugs but I can't seem to solve this one. I have set up my database in Visual Studio to use the one I have create with dailyrazor the same db the deployed version will use. I am using British Dates and on my localhost datetime is displayed: 27/05/2010 09:00 However on the dailyrazor host it is displayed: 5/27/2010 9:00 AM Short Dates e.g. 27/04/2010 display the same on both servers. This is causing some issues when entering data as errors occur on date fields. Any help would be appreciated. Thanks, Jon

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  • time difference on heroku server

    - by railsnew
    There seems to be a time difference on heroku server. >> Customer.last.id => 584 >> Customer.last.created_at => Thu, 06 May 2010 01:43:20 UTC +00:00 >> Time.zone => #<ActiveSupport::TimeZone:0x2b1dec47e5c0 @utc_offset=0, @tzinfo=#<TZInfo::DataTimezone: Etc/UTC>, @name="UTC"> >> Time.now => Wed May 05 19:05:15 -0700 2010 >> Time.now.zone => "PDT" Notice that current time is May 05 19...however, created_at date for last record is May 06 01:43. This does not make any sense. What can be causing this and how would I go about fixing this?

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  • SQL Server 2008 BULK INSERT causes more reads than writes. Why?

    - by sh1ng
    I've huge a table (a few billion rows) with a clustered index and two non-clustered indices. A BULK INSERT operation produces 112000 reads and only 383 writes (duration 19948ms). It's very confusing to me. Why do reads exceed writes? How can I reduce it? update query insert bulk DenormalizedPrice4 ([DP_ID] BigInt, [DP_CountryID] Int, [DP_OperatorID] SmallInt, [DP_OperatorPriceID] BigInt, [DP_SpoID] Int, [DP_TourTypeID] Int, [DP_CheckinDate] Date, [DP_CurrencyID] SmallInt, [DP_Cost] Decimal(9,2), [DP_FirstCityID] Int, [DP_FirstHotelID] Int, [DP_FirstBuildingID] Int, [DP_FirstHotelGlobalStarID] Int, [DP_FirstHotelGlobalMealID] Int, [DP_FirstHotelAccommodationTypeID] Int, [DP_FirstHotelRoomCategoryID] Int, [DP_FirstHotelRoomTypeID] Int, [DP_Days] TinyInt, [DP_Nights] TinyInt, [DP_ChildrenCount] TinyInt, [DP_AdultsCount] TinyInt, [DP_TariffID] Int, [DP_DepartureCityID] Int, [DP_DateCreated] SmallDateTime, [DP_DateDenormalized] SmallDateTime, [DP_IsHide] Bit, [DP_FirstHotelAccommodationID] Int) with (CHECK_CONSTRAINTS) No triggers & foreign keys Cluster Index by DP_ID and two non-unique indexes(with fillfactor=90%) And one more thing DB stored on RAID50 with stripe size 256K

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  • Perl Math::Business::EMA help

    - by Dustin
    Script pulls data from mysql: $DBI::result = $db->prepare(qq{ SELECT close FROM $table WHERE day <= '$DATE' ORDER BY day DESC LIMIT $EMA }); $DBI::result->execute(); while($row = $DBI::result->fetchrow) { print "$row\n"; }; with the following example results: 1.560 1.560 1.550... But I need to work out the EMA using Math::Business::EMA; and I'm not sure how to calculate this while maintaining the accuracy. EMA is weighted and My lack of Perl knowledge is not helping.

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  • algorithm advice for finding maximum items within a time period

    - by darren
    Hi everyone. I have a database schema that is similar to the following: | User | Event | Date |--------|---------------|------ | 111 | Walked dog | 2009-10-1 | 222 | Walked dog | 2009-10-2 | 333 | Fed Fish | 2009-10-5 | 222 | Did Laundry | 2009-10-6 | 111 | Fed Fish | 2009-10-7 | 111 | Walked dog | 2009-10-18 | 222 | Walked dog | 2009-10-19 | 111 | Fed Fish | 2009-10-21 I would like to produce a query that returns the maximum number of times a user performs some action within a time period. For example, given a time period of 5 days, what is the maximum number of times user 111 walked the dog? The most obvious solution would be to start at some zero point and move forward each day, summing up 5 day periods along the way, then taking the maximum total out of all the 5 day windows. the approach seems incredibly costly however. I would appreciate any suggestions you may have.

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  • How to track history of db tables that include many-to-many mapping tables?

    - by chacmool
    I have seen several questions here on tracking db history, but can't seem to find one that matches our situation. We need to track the history of several tables, some of which are many-to-many linking tables. Eg say we have this schema: EntityA id name EntityB id name ABLink A_id B_id So, tracking changes to EntityA or EntityB seems pretty straightforward. We can keep a log table with the same columns plus a date stamp and user. But what about the links? How do we maintain the set of links that are valid for a given version of the data? We need to be able to recreate a history of the data showing changes in chronological order. So if a link added or deleted, we indicate that. Etc.

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  • Question About DateCreated and DateModified Columns - SQL Server

    - by user311509
    CREATE TABLE Customer ( customerID int identity (500,20) CONSTRAINT . . dateCreated datetime DEFAULT GetDate() NOT NULL, dateModified datetime DEFAULT GetDate() NOT NULL ); When i insert a record, dateCreated and dateModified gets set to default date/time. When i update/modify the record, dateModified and dateCreated remains as is? What should i do? Obviously, i need to dateCreated value to remain as was inserted the first time and dateModified keeps changing when a change/modification occurs in the record fields. In other words, can you please write a sample quick trigger? I don't know much yet...

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  • Asp.net IIS6 - application pool recycle.

    - by sharru
    Im running a asp.net website on windows 2003 ii6. Every 24-28 hours im getting the following error: When the error occurres all users are disconnected from the website. Event Type: Warning Event Source: W3SVC Event Category: None Event ID: 1013 Date: 02/02/2010 Time: 19:29:38 User: N/A A process serving application pool 'DefaultAppPool' exceeded time limits during shut down. The process id was '1660'. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Any idea what does the error means? Is this related to application pool recycle? if so , is it a must to recycle iis pool? thanks!

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  • What HTTP headers are required to refresh a page on back button.

    - by cantabilesoftware
    I'm trying to get a page to refresh when navigated to from the back button. From what I understand after reading around a bit I should just need to mark the page as uncacheable but I can't get any browsers to refresh the page. These are the headers I've currently got: Cache-Control:no-cache Connection:keep-alive Content-Encoding:gzip Content-Length:1832 Content-Type:text/html; charset=utf-8 Date:Mon, 07 Jun 2010 14:05:39 GMT Expires:-1 Pragma:no-cache Server:Microsoft-IIS/7.5 Vary:Accept-Encoding Via:1.1 smoothwall:800 (squid/2.7.STABLE6) X-AspNet-Version:2.0.50727 X-AspNetMvc-Version:2.0 X-Cache:MISS from smoothwall X-Powered-By:ASP.NET Why would the browser pull this page from it's browser history and not refresh it?

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  • proper Django ORM syntax to make this code work in MySQL

    - by gtujan
    I have the following django code working on an sqlite database but for some unknown reason I get a syntax error if I change the backend to MySQL...does django's ORM treat filtering differently in MySQL? def wsjson(request,imei): wstations = WS.objects.annotate(latest_wslog_date=Max('wslog__date'),latest_wslog_time=Max('wslog__time')) logs = WSLog.objects.filter(date__in=[b.latest_wslog_date for b in wstations],time__in=[b.latest_wslog_time for b in wstations],imei__exact=imei) data = serializers.serialize('json',logs) return HttpResponse(data,'application/javascript') The code basically gets the latest logs from WSlog corresponding to each record in WS and serializes it to json. Models are defined as: class WS(models.Model): name = models.CharField(max_length=20) imei = models.CharField(max_length=15) description = models.TextField() def __unicode__(self): return self.name class WSLog(models.Model): imei = models.CharField(max_length=15) date = models.DateField() time = models.TimeField() data1 = models.DecimalField(max_digits=8,decimal_places=3) data2 = models.DecimalField(max_digits=8,decimal_places=3) WS = models.ForeignKey(WS) def __unicode__(self): return self.imei

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  • Migrate a Django project from MySQL to Oracle

    - by pablo
    Hi, I have a Django1.1 project that works with a legacy MySQL db. I'm trying to migrate this project to Oracle (xe and 11g). We have two options for the migration: - Use SQL developer to create a migration sql script. - Use Django fixtures. The schema created with the sql script from sql developer doesn't match the schema created from syncdb. For example, Django expects TIMESTAMP columns while sql developer creates DATE columns. Using syncdb with Django fixtures could be great but when trying to load the MySQL fixtures into Oracle, after using syncdb, I'm getting: IntegrityError: ORA-00001: unique constraint (USER.SYS_C004253) violated How can I find what part create the integrity error? Thanks

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  • iPhone Development - Using NSPredicate to retrieve most recently added record from CoreData

    - by Mustafa
    I want to retrieve the most recently added record from CoreData. I was wondering if that's possible using NSPredicate? If so, how? e.g. i have a one-to-many relationship between Department and Staff, and i want to fetch the Staff record that was most recently employed. The Staff table has a date field which can be used. I don't want to fetch all the Staff records and then look for the right one. Note that CoreData stores the related records in an NSSet.

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  • How many parameters in C# method are acceptable?

    - by Valentin Heinitz
    I am new to C# and have to maintain a C# Application. Now I'v found a method vaving 32 Parameters (not auto-generated code). From C/C++ I remember the rule of thumb "4 Parameters". It may be an old-fashioned rule rooting back to old 0x86 compilers, where 4 Parameters could be accomodated in registers (fast) or on stack otherwise. I am not concerning about performance, but I do have a feeling, that 32 parameters per functions are not easy to maintain even in C#. Or am I completly not up to date? What is the rule of thumb for C#? Thank you for any hint!

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  • Django Initial for a ManyToMany Field

    - by gramware
    I have a form that edits an instance of my model. I would like to use the form to pass all the values as hidden with an inital values of username defaulting to the logged in user so that it becomes a subscribe form. The problem is that the normal initial={'field':value} doesn't seem to work for manytomany fields. how do i go about it? my views.py @login_required def event_view(request,eventID): user = UserProfile.objects.get(pk=request.session['_auth_user_id']) event = events.objects.get(eventID = eventID) if request.method == 'POST': form = eventsSusbcribeForm( request.POST,instance=event) if form.is_valid(): form.save() return HttpResponseRedirect('/events/') else: form = eventsSusbcribeForm(instance=event) return render_to_response('event_view.html', {'user':user,'event':event, 'form':form},context_instance = RequestContext( request )) my forms.py class eventsSusbcribeForm(forms.ModelForm): eventposter = forms.ModelChoiceField(queryset=UserProfile.objects.all(), widget=forms.HiddenInput()) details = forms.CharField(widget=forms.Textarea(attrs={'cols':'50', 'rows':'5'}),label='Enter Event Description here') date = forms.DateField(widget=SelectDateWidget()) class Meta: model = events exclude = ('deleted') def __init__(self, *args, **kwargs): super(eventsSusbcribeForm, self).__init__(*args, **kwargs) self.fields['username'].initial = (user.id for user in UserProfile.objects.filter())

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  • my NSDateFormatter works only in the iPhone simulator

    - by Manuel Spuhler
    I use a NSDateFormatter which works fine in the simulator, but I get a nil when I run it in the iPhone. I hardcoded the date to be sure of the format, but it fails anyway. NSString *strPubDate = @"Fri, 8 May 2009 08:08:35 GMT"; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4]; [dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss Z"]; NSDate *myDate = [dateFormatter dateFromString:strPubDate]; I tried with different region settings, languages etc. on the iPhone. Any idea what is going wrong?

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