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  • How to elegantly create a datatable with Django ?

    - by Inshim
    Here's a common situation that I have and wish to avoid creating tedious loops and fiddling with html tables: I have a model Movie, which is has fkeys to Director and to Genre. How can I elegantly render a simple data table that has on one axis the different Directors, on another axis the different Genres, and inside each cell the count of the movies filtered by the respective Director and Genre? Thanks!

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  • What is the best scripting language to embed in a C# desktop application.

    - by Ewan Makepeace
    We are writing a complex rich desktop application and need to offer flexibility in reporting formats so we thought we would just expose our object model to a scripting langauge. Time was when that meant VBA (which is still an option), but the managed code derivative VSTA (I think) seems to have withered on the vine. What is now the best choice for an embedded scripting language on Windows .NET?

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  • Using Include() with inherited entities problem

    - by Peter Stegnar
    In EF eager loading related entities is easy. But I'm having difficulties including inherited entities when loading data using table-per-type model. This is my model: Entities: ArticleBase (base article entity) ArticleSpecial (inherited from ArticleBase) UserBase (base user entity) UserSpecial (inherited from UserBase) Image Relations are as shown on the image (omitting many columns): In reality my users are always of type UserSpecial, since UserBase is used in another application, thus we can share credentials. That's the only reason I have two separate tables. UserBase table can't be changed in any way shape or form, because the other app would break. Question How am I suppose to load ArticleSpecial with both CreatedBy and EditedBy set, so that both are of type UserSpecial (that defines Image relation)? I've tried (unsuccessfully though) these options: 1. Using lambda expressions: context.ArticleBases .OfType<ArticleSpecial>() .Include("UserCreated.Image") .Include("UserEdited.Image"); In this case the problem is that both CreatedBy and EditedBy are related to UserBase, that doesn't define Image navigation. So I should somehow cast these two to UserSpecial type like: context.ArticleBases .OfType<ArticleSpecial>() .Include("UserCreated<UserSpecial>.Image") .Include("UserEdited<UserSpecial>.Image"); But of course using generics in Include("UserCreated<UserSpecial>.Image") don't work. 2. I have tried using LINQ query var results = from articleSpecial in ctx.ArticleBase.OfType<ArticleSpecial>() join created in ctx.UserBase.OfType<UserSpecial>().Include("Image") on articleSpecial.UserCreated.Id equals created.Id join edited in ctx.UserBase.OfType<UserSpecial>().Include("Image") on articleSpecial.UserEdited.Id equals edited.Id select articleSpecial; In this case I'm only getting ArticleSpecial object instances without related properties being set. I know I should select those somehow, but I don't know how? Select part in my LINQ could be changed to something like select new { articleSpecial, articleSpecial.UserCreated, articleSpecial.UserEdited }; but images are still not loaded into my context. My joins in this case are barely used to filter out articleSpecial results, but they don't load entities into context (I suppose). Can anybody provide any help regarding this problem? I think it's not so uncommon.

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  • unable to receiving emails to my client.

    - by Karthik Malla
    Hello, I created my own mail server client my domain name is www.softmail.me from this mail client I can able to send emails to any email provider but I cannot receive any emails back. I hosted my client at http://beta.softmail.me do I need to apply settings of a sub domain or domain settings are enough. Kindly check my dns settings and reply me. my DNS details are A (Host) host = @ points = 65.75.241.26 host = beta points = 65.75.241.26 host = accs points = 65.75.241.26 host = mail points = 65.75.241.26 host = stable points = 65.75.241.26 CNAME (Alias) host = imap points = mail host = pop points = mail host = smtp points = mail host = www points = @ MX (Mail Exchange) priority = 10 host = mail points = @ Please verify the above settings and tell me why I am unable to receive emails back from other email providers.

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  • Good Domain Driven Design samples

    - by jlembke
    I'm learning about DDD and enjoying every minute of it. However, there are some practical issues that are confusing to me that I think seeing some good samples might clear up. So being at peace with those issues, does anyone know of some good working code samples that do a good job of modeling basic DDD concepts? Particularly interested in An illustrative Domain Model Repositories Use of Domain/Application Services Value Objects Aggregate Roots I know I'm probably asking for too much, but anything close will help.

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  • Accessing updated M2M fields in overriden save() in django's admin

    - by Jonathan
    I'd like to use the user updated values of a ManyToManyField in a model's overriden save() method when I save an instance in admin. It turns out that by design, django does not update the M2M field before calling save(), but only after the save() is complete as part of the form save... How can I access the new values of this field in the override save() ?

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  • searchlogic and virtual attributes

    - by Ermin
    Let's say I have the following model: Person <AR def name [self.first_name,self.middle_name,self.last_name].select{|n| n.present?}.join(' ') end end How could I do a search on the virtual attribute with searchlogic, something like: Person.search.name_like 'foo' Of courese I could construct a large statement like: Person.search.first_name_like_or_last_name_like_or_... 'argh' but surely there is a more elegant way.

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  • Objective-C: properties not being saved or passed

    - by Gerald Yeo
    Hi, i'm a newbie to iphone development. I'm doing a navigation-based app, and I'm having trouble passing values to a new view. @interface RootViewController : UITableViewController { NSString *imgurl; NSMutableArray *galleryArray; } @property (nonatomic, retain) NSString *imgurl; @property (nonatomic, retain) NSMutableArray *galleryArray; - (void)showAll; @end #import "RootViewController.h" #import "ScrollView.h" #import "Model.h" #import "JSON/JSON.h" @implementation RootViewController @synthesize galleryArray, imgurl; - (void)viewDidLoad { UIBarButtonItem *showButton = [[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Show All", @"") style:UIBarButtonItemStyleBordered target:self action:@selector(showAll)] autorelease]; self.navigationItem.rightBarButtonItem = showButton; NSString *jsonString = [[Model sharedInstance] jsonFromURLString:@"http://www.ddbstaging.com/gerald/gallery.php"]; NSDictionary *resultDictionary = [jsonString JSONValue]; if (resultDictionary == nil) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Webservice Down" message:@"The webservice you are accessing is currently down. Please try again later." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } else { galleryArray = [[NSMutableArray alloc] init]; galleryArray = [resultDictionary valueForKey:@"gallery"]; imgurl = (NSString *)[galleryArray objectAtIndex:0]; NSLog(@" -> %@", galleryArray); NSLog(imgurl); } } - (void)showAll { NSLog(@" -> %@", galleryArray); NSLog(imgurl); ScrollView *controller = [[ScrollView alloc] initWithJSON:galleryArray]; [self.navigationController pushViewController:controller animated:YES]; } The RootViewController startup and the json data loads up fine. I can see it from the first console trace. However, once I click on the Show All button, the app crashes. It doesn't even trace the galleryArray and imgurl properyly. Maybe additional pairs of eyes can spot my mistakes. Any help is greatly appreciated! [Session started at 2010-05-08 16:16:07 +0800.] 2010-05-08 16:16:07.242 Photos[5892:20b] -> ( ) GNU gdb 6.3.50-20050815 (Apple version gdb-967) (Tue Jul 14 02:11:58 UTC 2009) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin".sharedlibrary apply-load-rules all Attaching to process 5892. (gdb)

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  • How to extend Wi-Fi signal across rooms?

    - by Sriram Krishnan
    I moved into a new place and my old Wi-Fi router just doesn't have the range to get into all the rooms. I've been investigating a lot of options and I'm wondering what other folks have done here. Moving the current location of my primary Wi-Fi router is not an option thanks to our cable provider and our landlord. Buy a bigger, beefier router (seems expensive). If so, should I go for one of those draft 802.11n ones to avoid microwave/other Wi-Fi router interference? Set up a router with DD-WRT as a repeater Leech the neighbors' open Wi-Fi access point. Alright, I was kidding about the last one but I'm genuinely curious as to what my best option is.

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  • Determining Serial Driver Supported Baud Rates

    - by Jim Fell
    Hello. How can I determine the baud rates supported by my serial driver? My driver details (from the Device Manager) follow, but they do not seem very helpful. I am writing an application that is crashing because I am apparently attempting to to set COM1 to an unsupported baud rate, so I need to know which baud rates the driver does support. Any suggestions would be appreciated. Thanks. Driver files: C:\Windows\system32\drivers\serenum.sys C:\Windows\system32\drivers\serial.sys Provider: Microsoft Corporation File Version: 5.1.2600.5512 (xpsp.080413-2108)

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  • How to change the coordinate origin in Flash's stage with Actionscript?

    - by Petruza
    I think I did this before but can't find the code. Flash as many other graphical frameworks use the top-left corner as the coordinate origin (0,0) because it's how the underlying memory model is by convention. But it would be really simpler for my calculations if the origin was in the center of the stage, because all the game revolves around the center and uses a lot of trigonometry, angles, etc. Is there some built-in method like Stage::setOrigin( uint, uint ); or something like that?

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  • django filebrowser extensions problem

    - by Borislav
    Hi, I've set django filebrowser's debug to True and wrote the extension restrictions in the model. pdf = FileBrowseField("PDF", max_length=200, directory="documents/", extensions=['.pdf', '.doc', '.txt'], format='Document', blank=True, null=True) In django admin it shows correctly with debug info. Directory documents/ Extensions ['.pdf', '.doc', '.txt'] Format Document But when I call the filebrowser, it allows all file extensions to be uploaded. How can I restrict filebrowser to upload only certain filetypes that I want? Thanks everyone

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  • MVC 2 Validation without BuddyClasses

    - by Muhammad Adeel Zahid
    Hello EveryOne, i m using asp.NET MVC 2 for my current project and i need to validate form fields both on client and server side. for that i started with DataAnnotations. Now, i figure out that i have to write buddy class for every model or i have to go to designer generated code and put my annotations there (not a good idea though). if someone can suggest me a solution that helps me avoid writing those buddy classes and get the same functionality. Regards Adeel

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  • 8086 programming using TASM: pc to pc communication

    - by Komal
    .model small .stack 100 .data .code mov ah,00h mov al,0e3h mov dx,00h int 14h back: nop l1: mov ah,03h mov dx,00h int 14h and ah,01h cmp ah,01h jne l1 mov ah,02h mov dx,00h int 21h mov dl,al mov ah,02h int 21h jmb back mov ah,4ch int 21h end this a pc to pc commnication receiver program.i would like to know why have we used the mov dx,00h function and what is the meaning of mov al,0e3h this ?

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  • passing multiple vectors to function by reference (using structure)

    - by madman
    Hi StackOverflow, Can someone tell me the correct way of passing multiple vectors to a function that can take only a single argument? (specifically for pthread_create (..) function) I tried the following but it does not seem to work :-( First, I created the following structure struct ip2 { void* obj; int dim; int n_s; vector<vector<vector<double> > > *wlist; vector<int> *nrsv; struct model *pModel; }; The threads that I have created actually needs all these parameters. Since im using pthreads_create I put all this in a structure and then passed the pointer to the structure as an argument to pthread_create (as shown). some_fxn() { //some code struct ip2 ip; ip.obj=(void*) this; ip.n_s=n_s; ip.wlist=&wlist; ip.nrsv=&nrsv; ip.pModel=pModel; ip.dim=dim; pthread_create(&callThd1[lcntr], &attr1, &Cls::Entry, (void*) &ip); } The Entry method looks something like this. void* Cls::Entry(void *ip) { struct ip2 *x; x = (struct ip2 *)ip; (reinterpret_cast<Cls1 *>(x->obj))->Run(x->dim,x->n_s, x->wlist, x->nrsv, x->pModel); } The Run method looks something like this. void Run(int dim, int n_c, vector<vector<vector<double> > > *wlist, vector<int> *nrsv, struct model* pModel ) { //some code for(int k = 0; k < n_c; ++k) { //some code end = index + nrsv[k]; //some code } I get the following error when I try to compile the program. error: no match for ‘operator+’ in ‘index + *(((std::vector<int, std::allocator<int> >*)(((unsigned int)k) * 12u)) + nrsv)’ Can someone tell me how to do it the right way. Madhavan

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  • Django-imagekit: how to reduce image quality with a preprocessor_spec ?

    - by pierre-guillaume-degans
    Hi, please excuse me for my ugly english :p I've created this simple model class, with a Preprocessor to reduce my photos'quality (the photos'extension is .JPG): from django.db import models from imagekit.models import ImageModel from imagekit.specs import ImageSpec from imagekit import processors class Preprocessor(ImageSpec): quality = 50 processors = [processors.Format] class Picture(ImageModel): image = models.ImageField(upload_to='pictures') class IKOptions: preprocessor_spec = Preprocessor The problem : pictures'quality are not reduced. :( Any idea to fix it ? Thank you very much ;)

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  • What are the advantages and disadvantages of having a hosted firewall?

    - by Roy
    Would you rather have your firewall hosted or in house if you've got the skills to manage it? We currently have 6 remote offices and 2 different ISP's, one private network and our firewall (Watchguard, licenses are due to expire) is also our main gateway. I don't see how a hosted firewall (in this case Fortinet) is going to work for us especially when it's cheaper to buy our own firewall and the transition from one ISP to a new provider will take some time because our current contracts aren't due to expire soon. What are to pros and cons of having a firewall hosted by your ISP in general?

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  • "is not abstact and does not override abstract method."

    - by Chris Bolton
    So I'm pretty new to android development and have been trying to piece together some code bits. Here's what I have so far: package com.teslaprime.prirt; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.AdapterView.OnItemClickListener; import java.util.ArrayList; import java.util.List; public class TaskList extends Activity { List<Task> model = new ArrayList<Task>(); ArrayAdapter<Task> adapter = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button add = (Button) findViewById(R.id.add); add.setOnClickListener(onAdd); ListView list = (ListView) findViewById(R.id.tasks); adapter = new ArrayAdapter<Task>(this,android.R.layout.simple_list_item_1,model); list.setAdapter(adapter); list.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(View v, int position, long id) { adapter.remove(position); } });} private View.OnClickListener onAdd = new View.OnClickListener() { public void onClick(View v) { Task task = new Task(); EditText name = (EditText) findViewById(R.id.taskEntry); task.name = name.getText().toString(); adapter.add(task); } }; } and here are the errors I'm getting: compile: [javac] /opt/android-sdk/tools/ant/main_rules.xml:384: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds [javac] Compiling 2 source files to /home/chris-kun/code/priRT/bin/classes [javac] /home/chris-kun/code/priRT/src/com/teslaprime/prirt/TaskList.java:30: <anonymous com.teslaprime.prirt.TaskList$1> is not abstract and does not override abstract method onItemClick(android.widget.AdapterView<?>,android.view.View,int,long) in android.widget.AdapterView.OnItemClickListener [javac] list.setOnItemClickListener(new OnItemClickListener() { [javac] ^ [javac] /home/chris-kun/code/priRT/src/com/teslaprime/prirt/TaskList.java:32: remove(com.teslaprime.prirt.Task) in android.widget.ArrayAdapter<com.teslaprime.prirt.Task> cannot be applied to (int) [javac] adapter.remove(position); [javac] ^ [javac] 2 errors BUILD FAILED /opt/android-sdk/tools/ant/main_rules.xml:384: Compile failed; see the compiler error output for details. Total time: 2 seconds any ideas?

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  • How to create a CMS web site using OFBiz

    I need a simple how-to tutorial on developing a simple CMS web site using the OFBiz CMS framework. There are absolutely no documentation of how OFBiz CMS works. Whatever is there in the official website is only about the data model used in OFBiz CMS application. If somebody can illustrate just a "Hello World" like application in OFBiz CMS, it will great help for me. Or can guide me to similar documents in web.

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  • How to set up an SSL Cert with Subject Alternative Name

    - by Darren Oster
    To test a specific embedded client, I need to set up a web server serving a couple of SSL (HTTPS) sites, say "main.mysite.com" and "alternate.mysite.com". These should be handled by the same certificate, with a Subject Name of "main.mysite.com" and a Subject Alternative Name of "alternate.mysite.com". This certificate needs to be in an authority chain back to a 'proper' CA (such as GoDaddy, to keep the cost down). My question is, are there any good tutorials on how to do this, or can someone explain the process? What sort of parent certificate do I need to purchase from the CA provider? My understanding of SSL certificates is limited, but as Manuel said in Fawlty Towers, "I learn...". I'm happy to work in Windows (IIS) or Linux (Apache) (or even OSX, for that matter). Thanks in advance.

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