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  • IntegrityError with Booleand Fields and Postgresql

    - by xRobot
    I have this simple Blog model: class Blog(models.Model): title = models.CharField(_('title'), max_length=60, blank=True, null=True) body = models.TextField(_('body')) user = models.ForeignKey(User) is_public = models.BooleanField(_('is public'), default = True) When I insert a blog in admin interface, I get this error: IntegrityError at /admin/blogs/blog/add/ null value in column "is_public" violates not-null constraint Why ???

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  • How to use value in Application Settings load?

    - by monkey_boys
    private void Form1_FormClosing(object sender, FormClosingEventArgs e) { Properties.Settings.Default.Save(); } I used Application Settings and When Form was load i see value in control but i can't use its when Form load event. how to use value that bind from Application Settings when event Form1_Load ?

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  • Why would you use the ternary operator without assigning a value for the "true" condition?

    - by RickNotFred
    In the Android open-source qemu code I ran across this line of code: machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */ It this just a confusing way of saying: if (machine->max_cpus) { ; //do nothing } else { machine->max_cpus = 1; } If so, wouldn't it be clearer as: if (machine->max_cpus == 0) machine->max_cpus = 1; Interestingly, this compiles and works fine with gcc, but doesn't compile on http://www.comeaucomputing.com/tryitout/ .

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  • Applying a style to border on items in the gallery view

    - by iTom
    Hello World! Is their any way to apply a style resource to customize the Item Border in the Gallery Class with Android? I'm trying to hide or change the color of the default Grey border but by the looks of things this isn't possible? Any help or tips you can provide would be fantastic. Appreciated, Tom

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  • Is there a "method_missing" for rake tasks?

    - by James Wenton
    If my Rakefile does not find a task with a particular name, I'd like rake to instead create a new task by that name according to certain rules, if a file with the missing task name exists. But if it doesn't, I want to fall back to the default ("Don't know how to build task 'foo'!"). In short, is there a method_missing for Rake?

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  • How do i create multiple URLs with /controller/action/ format?

    - by Angela
    I have several controller/actions where no :id needs to be passed. what I did with the first two was make a custom route defining the controller and action. I thought that the default would allow me to create controller/action.xml by using respond_to in the controller, but that doesn't appear to be the right way. How can I create controller/action URL's (some are .xml) without creating a special route with map.connect?

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  • Clearing NSUserDefaults

    - by TonyNeallon
    I'm using +[NSUserDefaults standardUserDefaults] to store application settings. This consists of roughly a dozen string values. Is it possible to delete these values permanently instead of just setting them to a default value?

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  • Rails - Always have to check exists, and then value?

    - by Jason B
    I am checking to see if a value in a related table exists quite often in my view, in this case, expenses have approvals. If they have not been submitted, then there is no record of them in the approvals table. I am ending up with some really awkward code <% if !expense_item.expense_approval || expense_item.expense_approval.approval_status == 0 %> Is there a way to do an if statement on a value, without having to check if it exists first? Or some default way to set it nil?

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  • firebug and _moz_dirty

    - by shivesh
    I am developing Javascript app that will wrap every line of text entered inside iframe (designmode) with P (or div) like it happens by default in IE. For now I am not pasting my code because I just started, the first problem is when i type some text in firefox and even before I click enter or calling any function firebug inserts <br _moz_dirty=""> under the entered text. Why? How can I prevent it? If you still need my code please tell.

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  • how to avoid the error due to missing element from an XML file in Flash Action Script

    - by coderex
    Hi, I have a code which is written for read the xml data. and the xml file contains the optional values, so some time the elements are present there some times not. In this case how can i set a default value for that in action script 3.0. When i tried to trace the value that area is skipping. So is there any other method to trace-out is that element is present or not something like that??

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  • What font do you use for your code editor?

    - by Harmen
    For a long time I used Courier New as default font for my code editor, until I got more into typography and found this new fixed-width font called Triskweline: The font is beautiful, but unfortunately it works only at size 10pt. This made me wonder: what (custom) font do you use for your code editor?

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  • Need a fast test to see if a remote printer is available or not. Using CreateIC now, and when print

    - by Steve
    My application does a CreateIC (and later, an OpenPrinter) for the user's default printer. When this is a remote printer, and that printer is powered down or otherwise not present on the network, it takes over 20 seconds for the CreateIC to return. I'm looking for some call I can make that will give me a quick answer if the server is down (so I can return a status and not try to do the CreateIC/OpenPrinter). My environment is c/c++ (non-managed).

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  • Should I use more than one CSS sheet?

    - by Robert
    I am updating a website to add some mobile friendly pages. At the moment we have one big css page with everything in. My idea is to put all the mobile specific css into a separate file and then link both sheets. The mobile css will overide anything in the default css (bigger buttons etc). Im quite new to css, what is the best practice?

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  • How ensure if java program uses UTF-8 encoding

    - by Nayn
    Hi, I recently discovered that relying on default encoding of JVM causes bugs. I should explicitly use specific encoding ex. UTF-8 while working with String, InputStynreams etc. I have a huge codebase to scan for ensuring this. Could somebody suggest me some simpler way to check this than searching the whole codebase. Thanks Nayn

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