I am in process of converting Visual Basic app into Python Django. Currently, it has barcode functionality to process sales at a store. Can this be achieved with python django.
Hi Folks,
has anybody managed to get Djangos site map framework to run on Google App Engine?
I receive the following exception:
ImproperlyConfigured at /sitemap.xml
You haven't set the DATABASE_ENGINE setting yet.
Request Method: GET
Request URL: http://127.0.0.1:8080/sitemap.xml
Exception Type: ImproperlyConfigured
Exception Value: You haven't set the DATABASE_ENGINE setting yet.
Exception Location: D:\Program Files\Google\google_appengine\lib\django\django\db\backends\dummy\base.py in complain, line 13
Is it possible to let the users choose / change dynamically the columns displayed in a object list in Django administration ?
Things can surely be implemented "from scratch" by modifying the 'change_list.html' template but I was wondering if somebody has already had the same problem and/or if any django-pluggin can do that.
Thanks in advance,
Need to integrate Django with an existing authentication system. That system has it's own database, API, login/logout,edit profile web pages and cookie.
(I may have to add a few additional profile fields stored/updated locally)
What's the proper approach to substitute the out-of-the-box authentication in Django?
How can I send trace messages to the console (like print) when I'm running my Django app under manage.py runserver, but have those messages sent to a log file when I'm running the app under Apache?
I reviewed Django logging and although I was impressed with its flexibility and configurability for advanced uses, I'm still stumped with how to handle my simple use-case.
My apologies for not being able to find the answer elsewhere-- this is a newbie question I know.
Currently I have a website on the Google App Engine written in Google's webapp framework. What I want to know is what are the benefits of converting my app to run with django? And what are the downsides? Also how did you guys code your GAE apps? Did you use webapp or django? Or did you go an entirely different route and use the Java api?
Thanks
Hi,
As the title says I have a list of Django objects and I want to get a list of primary keys. What is the best way of doing this?
I know I could do
my_list = []
for item in object_list:
my_list.append(item.pk)
but was wondering if there is Django or Python specific way of doing this better.
Thanks
I am trying to lower the amount of queries that my django app is using, but I am a little confused on how to do it.
I would like to get a query set with one hit to the database and then filter items from that set. I have tried a couple of things, but I always get queries for each set.
let's say I want to get all names from my DB, but also separate out the people just named Ted. Both the names and the ted set will be used in the template.
This will give me two sets, one with all names and one with Ted.. but also hits the database twice:
namelist = People.objects.all()
tedList = namelist.filter(name='ted')
Is there a way to filter the first set without hitting the data base again?
Hi,
I'm surprised this question hasn't come up. Couldn't find much on the web.
Using Entry.objects.latest('created_at') I can recover the latest entry for all Entry objects, but say if I want the latest entry for each user? This is something similar to an SQL latest record query. But how do I achieve this using the ORM? Here is my approach I'm wondering if it is the most efficient way to do what I want.
First I perform a sub query: Objects are grouped by user and the Max (latest) created_by field is returned for each user (created_at__max) I then filter Entry objects based on the results in the subquery and get the required objects.
Entry.objects.filter(created_at__in=Entry.objects.values('user').annotate(Max('created_at')).values_list('created_at__max'))
or using a manager:
class UsersLatest(models.Manager):
def get_query_set(self):
return Super(UsersLatest,self).get_query_set().filter(created_at__in=self.model.objects.values('user').annotate(Max('created_at')).values_list('created_at__max'))
Is there a more efficient way? possibly without sub query?
Thanks,
Paul
I'm using postGresSQL and my main table has about 20,000 rows. Sometimes count() methods can take ages or even timeout.
Mod.manager.filter(...).count()
I need to selectively override the count() method depending on what filter has been applied.
Just having a cache of results would be a great gain but I'd like to be able to say: if filter query is just {'enabled'=True} then return 20,000 without touching the db.
Note: I can't prevent the call to .count() as it's inside django's pagination, which always does a count.
Hi!
I´m communicating via webservices with the Server (where's installed the database) and the c# application. So, i dont have direct access with the database
Somehow, i receive a DataSet with 3 tables inside:
And would like to populate 3 combobox like this:
Which (as you already see) has a sequential logic. If i perhaps select "Gabicontas1" instead "Gabicontas" from the first combobox, the next ones has to change..
Can anyone help?
Regards
I am trying to cleanup a string coming from a search box on a multi-language site.
Normally I would use a regex like:
$allowed = "-+?!,.;:\w\s";
$txt_search = preg_replace("/[^" . $allowed . "]?(.*?)[^" . $allowed . "]?/iu", "$1", $_GET['txt_search']);
and that works fine for English texts.
However, now I need to do the same when the texts entered can be in any language (Russian now, Chinese in the future).
How can I clean up the string while preserving "normal texts" in the original language?
I though about switching to a blacklist (although I´d rather not...) but at this moment the regex just completely destroys all original input.
Hi,
I have a flex datagrid with 4 columns.I have a comboBox with 4 checkboxes,containing the column names of datagrid as its label.I want the datagrid to display only those columns which are selected in combobox.Can anyone tell me how this filtering of columns in datagrid can be done?
Thanks in advance.
I have a datatable that contains rows of transaction data for multiple users. Each row includes UserID and UserTransactionID columns. What would I use for as a RowFilter in the tables DefaultView to only show the row for each user that has the highest UserTransactionID value?
sample data and results
UserID UserTransactionID PassesFilter
1 1 False
1 2 False
1 3 True
2 1 True
3 1 False
3 2 True
My data is orginating in a non-SQL source, the DataTable is being created to be bound to a DataGridView so I can't make changes to a query being used to get the data initially.
This has taken me nearly 2 weeks and I dont know what else to do. I have a main form (UserSearch) that has a subform (TestUserSub). The associated table for both forms is tblusers.
very simple; on the main form (UserSearch) I have a comboboxes associated with the fields in the tblusers eg cmbid, cmbname, cmbdept and so on. All I want, is for a user to make a selection from any of these comboboxes and for the associated fields to display in the subform (TestUserSub). I have tried several different versions of code in the afterupdate event in a couple of the comboboxes and nothing is happening in the subform or in other instances I get error message.
One example i have tried is filtering running an SQL command
Private Sub cmbid_AfterUpdate()
Dim strSQL As String
If IsNull(Me.cmbaccess) Then
Me.RecordSource = "tblusers"
Else
strSQL = "SELECT tblUsers.[Team Member_ID] FROM tblUsers " & _
"WHERE (((tblUsers.[Team Member_ID])= " & [form_testusersub].[txtid2]))& ";"
Me.RecordSource = strSQL
End If
End Sub
The above didnt work..Can someone please help me with this. I have a sample database that i have been working off and by some very strange way, they have managed to do this same thing without calling any code. Is this possible?
Visual Studio 2010 adds a new feature to improve loading speed of references in "Add .NET Reference" tab.
For example, when the target framework of project is 3.5, it displays only 3.5 assemblies in the list, and says "Filtered to: .NET Framework 3.5". This feature is quite annoying, as it makes impossible to find an older assembly, unless you change a target framework in compilation options. Is there any option to disable that filtering?
How would you implement the filtering of a list in WSS 3.0 by a current user's profile property. Let's say there is a list with a Department column and I want that list filtered by the current's user department.
Hi guys,
I am trying to get it working but still no results. Do you know some kind of tutorial or sample asm code for blur image filtering?
Thank you in advance for the reply!
Cheers
Hi.
I have a text file of URLs, about 14000. Below is a couple of examples:
http://www.domainname.com/pagename?CONTENT_ITEM_ID=100¶m2=123
http://www.domainname.com/images?IMAGE_ID=10
http://www.domainname.com/pagename?CONTENT_ITEM_ID=101¶m2=123
http://www.domainname.com/images?IMAGE_ID=11
http://www.domainname.com/pagename?CONTENT_ITEM_ID=102¶m2=123
I have loaded the text file into a Python list and I am trying to get all the URLs with CONTENT_ITEM_ID separated off into a list of their own. What would be the best way to do this in Python?
Cheers
Hello,
I need to implement
File[] files = getFiles( String folderName, String ptrn );
Where ptrn is a command prompt style pattern like "*2010*.txt"
I'm familar with FilenameFilter class, but can't implement
public boolean accept(File dir, String filename)
because String.matches() doesn't accept such patterns.
Thanks!
i can't seem to tween any bitmap filters. here's my code:
var dropShadow:DropShadowFilter = new DropShadowFilter();
mySprite.filters = [dropShadow];
var dropShadowTween:Tween = new Tween(dropShadow, "distance", Regular.easeOut, 4.0, 20, 2, true);
what is my mistake? i've also tried the following but it doesn't work:
var dropShadowTween:Tween = new Tween(mySprite.filters[0], "distance", Regular.easeOut, 4.0, 20, 2, true);
What is the best way to design a system where users can create their own criterias to search data ? By "design" i mean, data storage, data access layer and search structure.
We will actually refactor an existing application which is written in C# and ASP .NET and we don't want to change the infrastructure. Our main issue is performance and we use MSSQL and DevExpress to build queries. Some queries run in 4-5 minutes and all the columns included in the queries have indexes.
When i check queries, i see that DevExpress builds too many "exists" clauses and i'm not happy with that because i have doubts that some of these queries skip some indexes.
What may be the alternatives to DevExpress? NHibernate or Entity Framework? Can we build dynamic criteria system and store these to database in both of them ?
And also do we need any alternative storage like a lucene index or OLAP database?
Hi,
First thing I would say is that I am a Drupal newbie. So, I would appreciate your answer in a detailed step by step process.
I am using Drupal 6 and location module. There are two main content types - user profile (using content profile module) and event content type. Both have one field for location.
Now, lets suppose in his profile, user is selecting city as Toronto and province as Ontario. And some events have been added for Toronto city. I need one Views, which will display events from user city. So, if user is from Vancouver, and they click on "my city events", they will see list of events from their city. Someone told me that I can achieve this using arguments/ relationships, but I don't know how to do that.
Can someone please help me out? I am not good at PHP either :(
I am writing a simple C# application that is handling bank savings.
I want to be able to show the results on either, yearly, monthly or quarterly basic how can this be done? How can I loop through a set of results and only show every third post (if I am using quarterly) for example.
In Python I can use range(1,31,3) but how is it done in C#?
UPDATE 1
I want to loop 12 times (annually) and calculate the interest each loop but I only want to print the results every third loop (quarterly). How can I achieve this?