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  • django form creation on init

    - by John
    Hi, How can I add a field in the form init function? e.g. in the code below I want to add a profile field. class StaffForm(forms.ModelForm): def __init__(self, user, *args, **kwargs): if user.pk == 1: self.fields['profile'] = forms.CharField(max_length=200) super(StaffForm, self).__init__(*args, **kwargs) class Meta: model = Staff I know I can add it just below the class StaffForm.... line but I want this to be dynamic depending on what user is passed in so can't do it this way. Thanks

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  • Converting serial port data to TCP/IP in a linux environment

    - by Doug
    Thank you in advance. I need to get data from the serial port of a linux system and convert it to TCP/IP to send to a server. Is this difficult to do? I have some basic programming experience but not much experience with Linux. Are there any open source applications that do this? Again thank you for any help.

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  • Unable to display google maps in a dojo layout

    - by Jens
    Dear All, I am a real newbie in programming and now I have to combine Google Maps and Dojo. Both alone are fine but when I try to implement a Google Map into a Dojo content pane which is embedded in a border-container it simply does not work. I think there is a problem with the naming of the divs but perhaps there is something else to take care of? Could someone post the simplest possible solution? many thanks

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  • Setting a preferred item of a many-to-one in Django

    - by Mike DeSimone
    I'm trying to create a Django model that handles the following: An Item can have several Names. One of the Names for an Item is its primary Name, i.e. the Name displayed given an Item. (The model names were changed to protect the innocent.) The models.py I've got looks like: class Item(models.Model): primaryName = models.OneToOneField("Name", verbose_name="Primary Name", related_name="_unused") def __unicode__(self): return self.primaryName.name class Name(models.Model): item = models.ForeignKey(Item) name = models.CharField(max_length=32, unique=True) def __unicode__(self): return self.name class Meta: ordering = [ 'name' ] The admin.py looks like: class NameInline(admin.TabularInline): model = Name class ItemAdmin(admin.ModelAdmin): inlines = [ NameInline ] admin.site.register(Item, ItemAdmin) It looks like the database schema is working fine, but I'm having trouble with the admin, so I'm not sure of anything at this point. My main questions are: How do I explain to the admin that primaryName needs to be one of the Names of the item being edited? Is there a way to automatically set primaryName to the first Name found, if primaryName is not set, since I'm using inline admin for the names?

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  • Redirecting Google search results to our website

    - by Arjun Vasudevan
    I have an ASP.NET page in which there is a textbox. The user enters a string in the textbox and I want that string to be searched in Google and redirect the search results to my web page. I'm using VB as the background programming language. How can I do that? And also which toolbox control should I use in my page, for displaying the search results?

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  • How can i attach to a process using gdbvim?

    - by thamurath
    Hi, I use Vim as primary IDE for programming, with some plugins i have a good environment but for a single point: debugging. I have recompiled Vim to use vimgdb, and it works, but the problem is that i need to attach to a process started by a root user so i have to use sudo to do it.... How can i do this with vimgdb? Thanks in advance.

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  • Mood for coding

    - by dole doug
    When you don't have the mood for coding, how do you get it? Now I'm working on a project that I don't like at all, besides is a new programming language for me and I have to do it alone. So, the question is: how do you get the mood for coding? Any tips/tricks are welcome :)

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  • JavaScript using toString on a Function object to read text content

    - by mseeley
    Calling toString() on the function below returns different strings across browsers. I understand this is because ECMA-262 15.3.4.2 leaves wiggle room for each vendor. Chrome returns the comments in addition to all syntax. Sadly Firefox 3.6 omits the comments. Based on Firefox's behavior I haven't tested IE, Opera, or Safari. function foo() { /* comment */ var bar = true; } Specifically, I am attempting to embed meta data within a specially formatted comment block within a function. Later the return value of the functions toString() method would be parsed and values returned as an object. I've been unable to locate compatibility tables or alternatives to toString(). Does the community have any ideas? Btw, pre-processing JS files isn't an option. :( Thanks a lot. :)

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  • ASP.net MVC How to change the Textbox Class upon validation failure?

    - by Harry
    I notice in the default MVC template project that the Account registration fields are highlighted via a class change. I can't seem to get the same behavour out of my own code (in the same project - same CSS etc) What might be stopping this from occuring? Update I believe this relates to one of my other questions Because I was having trouble with NullReferenceExceptions I have changed the Html.ValidationMessage fields to have different names than the target fields. So really, I need to resolve this question

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  • How do I get started in embedded programing?

    - by mmattax
    I would like to get started in embedded systems programming but don't know where to start...I have a very solid knowledge of C and C++ and would preferably like to use these languages with the GNU compilers. I have a degree in CS so I have a solid foundation... I have no clue about what hardware and other resources that I will need...If you work or are knowledgeable in this area, how did you get started and what are some good resource for a beginner? Thanks.

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  • How do I create a clicked state in a SIlverlight button?

    - by Roy
    How do I create a clicked state in visual state manager for a control that is based on a button control? I tried using a pressed state but once the mouse button is released it reverts back to the original color. I would like to change the color of the button when it is clicked on. I am not looking for a solution in the click event handler because this is a part of a template. Thank you

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  • How do I superimpose one bitmap image on another in GDI+?

    - by Old Man
    Using GDI+ I've made a heatmap bmp and I'd like to superimpose it on top of my bmp map. I've saved the two bmps to disk, and they look good, I just need a way to put them together. Is there any way to do this, perhaps using the Graphics object? How is transparency/alpa involved? I'm very new to GDI programming so please be as specific as possible.

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  • Is SHA sufficient for checking file duplication? (sha1_file in PHP)

    - by wag2639
    Suppose you wanted to make a file hosting site for people to upload their files and send a link to their friends to retrieve it later and you want to insure files are duplicated where we store them, is PHP's sha1_file good enough for the task? Is there any reason to not use md5_file instead? For the frontend, it'll be obscured using the original file name store in a database but some additional concerns would be if this would reveal anything about the original poster. Does a file inherit any meta information with it like last modified or who posted it or is this stuff based in the file system? Also, is using a salt frivolous since security in regards of rainbow table attack mean nothing to this and the hash could later be used as a checksum? One last thing, scalability? initially, it's only going to be used for small files a couple of megs big but eventually... Edit 1: The point of the hash is primarily to avoid file duplication, not to create obscurity.

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  • django ifequal naturalday

    - by Scott Willman
    I'm not sure why, but this condition will never evaluate True for me. I'm feeding it datetime.today() in the urls file. Am I missing something? Template: {% load humaize %} {{ entry.date|naturalday }} {# Evals to "today" #} {% ifequal entry.date|naturalday "today" %} True {{ entry.date|date:"fA"|lower }} {{ entry.date|naturalday|title }} {% else %} False {{ entry.date|naturalday|title }} {% endifequal %}

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