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  • How do you refresh the contents of an R gWidget?

    - by Richie Cotton
    I'm creating a GUI in R using gWidgets (more specifically gWidgetstcltk). I'd like to know how to update the contents of selection-type widgets, such as gdroplist and gtable. I currently have a rather hackish method of deleting the widget and re-creating it. I'm sure there's a better way. This simple example displays all the variables in the global environment. library(gWidgets) library(gWidgetstcltk) create.widgets <- function() { grp <- ggroup(container = win) ddl <- gdroplist(ls(envir = globalenv()), container = grp) refresh <- gimage("refresh", dirname = "stock", container = grp, handler = function(h, ...) { if(exists("grp") && !is.null(grp)) { delete(win, grp) rm(grp) } grp <- create.widgets() } ) } win <- gwindow() grp <- create.widgets()

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  • Creating a foreign key in MySQL produces error:

    - by SnOrfus
    I'm trying to create a foreign key on a table in MySQL and I'm getting a strange error that there seems to be little info about in any of my searches. I'm creating the key with this (emitted from mysql workbench 5.2): ALTER TABLE `db`.`appointment` ADD CONSTRAINT `FK_appointment_CancellationID` FOREIGN KEY (`CancellationID` ) REFERENCES `db`.`appointment_cancellation` (`ID` ) ON DELETE NO ACTION ON UPDATE NO ACTION , ADD INDEX `FK_appointment_CancellationID` (`CancellationID` ASC) ; at which point I get the error: ERROR 1452: Cannot add or update a child row: a foreign key constraint fails (alarmtekcore., CONSTRAINT FK_lead_appointment_CancellationID FOREIGN KEY (CancellationID) REFERENCES lead_appointment_cancellation (`) I've checked here but there's no data in the table.

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  • remove parent xml tag

    - by cru3l
    For example, we have xml file with this format: <A> <B> <C></C> <D></D> <D></D> </B> </A> i need that: if all "D"-tags elements are empty, then we need to delete whole "A"-tag element and, of course, we need to do this with all "A"-tags in xml.

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  • Checkbox vs Two Radio Buttons - Which one is more usable?

    - by Engram
    I'm currently working on some setting screens, most of which contain a 2 column form with a preference question on the left, and a form element on the right. The questions are things like: Can add/edit other users? Can delete clients? Obviously this setting is a binary setting and most UI "experts" would insist that a checkbox is the appropriate form element to use. However, when I mocked up the form with the checkboxes it looked unfriendly and it seemed hard to relate the state of the checkbox back to the question. I changed the form to use two radio buttons instead: Yes o No Personally I find this easier to process, as the options are actually answers to the question posed on the left. In terms of clicking it makes no difference to the user, it's a single click each time to change the setting. What do you think of this use of radio buttons? Is this better or worse than a checkbox and why?

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  • LINQ-to-SQL class doesn't implement INotifyPropertyChanging & INotifyPropertyChanged if pulling from

    - by Traples
    I modified my data source in my LINQ-to-SQL class (by the old delete and drag back in method), and was surprised to see the INotifyPropertyChanging & INotifyPropertyChanged interfaces no longer implemented in the generated classes (MyDb.designer.cs). The methods for the individual fields went from looking like this... [Column(Storage="_Size", DbType="NVarChar(100)")] public string Size { get { return this._Size; } set { if ((this._Size != value)) { this.OnSizeChanging(value); this.SendPropertyChanging(); this._Size = value; this.SendPropertyChanged("Size"); this.OnSizeChanged(); } } } To looking like this... [Column(Storage="_Size", DbType="NVarChar(100)")] public string Size { get { return this._Size; } set { if ((this._Size != value)) { this._Size = value; } } } Any ideas on why this happens and how it will affect my application?

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  • How do I avoid nesting forms when offering inline editing of lists with checkboxes for mass updates.

    - by adam
    A lot of sites offer the ability to edit lists of items inline as well as allowing multiple items to be selected via checkboxes and have an action performed all at once e.g. delete, mark as spam etc. But how do you implement this without violating html rules. I need one form for the checkboxes with individual submit_tags for the mass actions. But after a user clicks on an item in the list, another form via Ajax will be inserted within the checkbox form. How do I avoid doing this? I'm using rails and jQuery.

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  • Extra < using auto complete in Sublime Text 2

    - by ReLeaf
    I installed the All Autocomplete package in my Sublime Text 2 editor and everything works fine except when I type "<div" or something similar, the auto-complete box pops up, I select the one I want and hit enter and it adds "<<div></div>" with an extra "<" in the front of my tag. I have to go back and delete the extra "<" every time...(!) I can't seem to resolve this issue. If I use the command CTRL+Space, the box pops up and I can select the tag I want and it does not include the extra tag but that messes with my flow. Has anyone out there experienced this? Thanks for your help!

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  • YAGNI and database creation scripts

    - by Daniel Straight
    Right now, I have code which creates the database (just a few CREATE queries on a SQLite database) in my main database access class. This seems unnecessary as I have no intention of ever using the code. I would just need it if something went wrong and I needed to recreate the database. Should I... Leave things as they are, even though the database creation code is about a quarter of my file size. Move the database-creation code to a separate script. It's likely I'll be running it manually if I ever need to run it again anyway, and that would put it out-of-sight-out-of-mind while working on the main code. Delete the database-creation code and rely on revision control if I ever find myself needing it again.

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  • irritating TortoiseSVN error - file or directory is corrupted and chkdsk at boot

    - by WalterJ89
    Can't move 'D:\Documents\Websites\blah.svn\tmp\entries' to 'D:\ ... .svn\entries': The file or directory is corrupted and unreadable. Any thoughts on what would cause this? This usually happens when trying to commit a large number of new files. Sometimes an update fixes it but most of the time I have to delete the offending directory, re-download it, and attempt to add or update it again. EDIT: it seems my pc always wanting to chkdsk as boot is related.

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  • Rails: render a partial from a plugin

    - by Sam
    I'm getting a missing template error after I try rendering a partial from a plugin. I have included the files with the following: %w{ models controllers helpers views }.each do |dir| path = File.join(File.dirname(__FILE__), 'app', dir) $LOAD_PATH << path ActiveSupport::Dependencies.load_paths << path ActiveSupport::Dependencies.load_once_paths.delete(path) end The Models are getting loaded, but as for other things I'm not sure what's going on. The helpers are not getting loaded too because I just copied the contents of the partial from the plugin instead of the render :partial = and then it came up with a helper error. Question is how to be able to :render :partial = from the views folder in my plugin

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  • rails expiring cache

    - by ash34
    Hi, I entered some products data into a table using a migration. I need to expire the page and fragment cache when I update, add, delete products from this table. I created a sweeper for this. class ProductSweeper < ActionController::Caching::Sweeper observe Product def after_create expire_cache end def after_save expire_cache end def after_update expire_cache end def after_destroy expire_cache end private def expire_cache expire_page(:controller => 'ProductsController', :action => 'index') expire_fragment 'listed_products' end end Then in script/console I update the product name and saved. When I reload my app in the browser it still gives me a cache hit. Cached fragment hit: views/listed_products (0.2ms) Can someone tell me how to expire this cache. I will not be adding, updating, deleting products through a controller action. thanks, ash

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  • PHP: deleting files – permission denied – chmod?

    - by mathiregister
    hi guys, i want to delete files from a directory via php. Somehow my php_errorlog always tells me: [06-Jun-2010 19:38:46] PHP Warning: chmod() [function.chmod]: Operation not permitted in /Users/myname/htdocs/ if ($_POST) { echo "yeah!!!"; print count($_POST['deletefiles']); chmod($path, 0777); //server rights foreach ($_POST['deletefiles'] as $value) { print $value; unlink($path .'/' . $value); } //chmod($path, 0666); //server rights } what am I doing wrong? Thank you

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  • XCode 4.3 : XIB files and localisation

    - by Fabrice MAUPIN
    I have a problem with XIB Files and localizations (Xcode 4.3, Mac Os X 10.7.4) My application supports french and english localizations. For my test, i decided to change the languages and regions from "french" to "english" in system preferences. When i launch my application, it displays always old XIB files (french) et not the XIB files "attached" to my new localization ! ** I followed all the recommendations which i was able to find : i cleared all caches, clean up the project, ... and so on ! The problem is always here and persists. Can be that XCode4 has the other files to delete somewhere else ? is it possible to use another means to test my new localization ? If you are a idea, ... Thanks in advance. FM.

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  • Devise and cancan gems: has_many association

    - by tiktak
    I use devise and cancan gems and have simple model association: user has_many subscriptions, subscription belongs_to :user. Have following SubscriptionsController: class SubscriptionsController < ApplicationController load_and_authorize_resource :user load_and_authorize_resource :subscription, through: :user before_filter :authenticate_user! def index @subscriptions = @user.subscriptions.paginate(:page => params[:page]).order(:created_at) end #other actions end And Cancan Ability.rb: class Ability include CanCan::Ability def initialize(user) user ||=User.new can [:index, :show], [Edition, Kind] if user.admin? can :manage, :all elsif user.id can [:read, :create, :destroy, :pay], Subscription, user_id: user.id can [:delete_from_cart, :add_to_cart, :cart], User, id: user.id end end end The problem is that i cannot use subscriptions actions as a user but can as a admin. And have no problems with UsersController. When i delete following lines from SubscriptionsController: load_and_authorize_resource :user load_and_authorize_resource :subscription, through: :user before_filter :authenticate_user! Have no problems at all. So the issue in these lines or in Ability.rb. Any suggestions?

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  • Mercurial - How to stop tracking modified file but keep the first version in repository.

    - by teerapap
    I create the hg repository with my source tree. I want to keep the first version of some files such as Makefile in the repository and then hg don't see it modified even through I modified it. Original problem is that ./configure usually modifies the Makefile but I don't want the build files to committed in the repository. So I want to keep only first version of configure and Makefile in the repository so that everybody who clone my repository can run ./configure by themself and not bother the repository I tried hg remove or hg forget but those are stop tracking and also delete the files in the next revision of reporitory. .hgignore doesn't do the things too. I think of hg revert everytimes I run ./configure or make but it's not efficient way. Are there any better ways?

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  • Using entity framework to detect changes in related table and action appropriate inserts and deletes

    - by Kohan
    Lets say i have a Person table, a Role table with a trel table PersonRoles linking them as many to many. I create a new person and assign them to 2 roles (role 1, role 3). I then want to edit this person; so i retrieve their data and bind their roles to a checkboxes. I change the values (Deselect role 1 and select role 2 instead) I then post this data back through a viewmodel. Can i then get Entity Framework to update these roles for me, as in delete the entry in PersonRoles to role 1 and then add a new entry as role 2? Or do i have to do the logic for this myself? Cheers, Kohan

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  • Unlock a file with unlocker from a c# App?

    - by netadictos
    I am trying to unlock a file from a C# program, using unlocker. In my UI, I put a button to unlock the file the app couldn't delete. When the user pushes the button, I want unlocker (the famous app) to be opened. I have read about in the Unlocker web, and there is some explanations about the commandline to use but nothing works. I write the following code but nothing happens: "c:\Program Files\unlocker\unlocker.exe" -L "PATHFORTHEFILE.doc" Nothing happens. I have tried without parameters and with -LU. Any idea? Something more efficient than unlocker to integrate it with software?

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  • change Magento to new server, images of existing product do not shown in frontend

    - by forrest gump
    I have moved a Magento website to a new server to optimize speed. All images appear to be replaced by image placeholders. I tried to set permission for media to 777, when I delete cache media folder and refresh, a new cache folder is created automatically, but only with placeholder images inside. I flushed image cache, reindex in magento backend but still no hope. What should I do now? Somethings might be helpful: . It's fine to create new product with images . Flush cache, only placeholders images are created . tried to use magento-cleanup.php, no hope . tried to remove .htaccess in media folder . the images of products are there in the media folder, just not in cache folder. Magento only looks at the cache folder for image :(

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  • how to get day name in datetime in python

    - by gadss
    how can I get the day name (such as : Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday) in datetime in python?... here is my code in my handlers.py from django.utils.xmlutils import SimplerXMLGenerator from piston.handler import BaseHandler from booking.models import * from django.db.models import * from piston.utils import rc, require_mime, require_extended, validate import datetime class BookingHandler(BaseHandler): allowed_method = ('GET', 'POST', 'PUT', 'DELETE') fields = ('id', 'date_select', 'product_name', 'quantity', 'price','totalcost', 'first_name', 'last_name', 'contact', 'product') model = Booking def read(self, request, id, date_select): if not self.has_model(): return rc.NOT_IMPLEMENTED try: prod = Product.objects.get(id=id) prod_quantity = prod.quantity merge = [] checkDateExist = Booking.objects.filter(date_select=date_select) if checkDateExist.exists(): entered_date = Booking.objects.values('date_select').distinct('date_select').filter(date_select=date_select)[0]['date_select'] else: entered_date = datetime.datetime.strptime(date_select, '%Y-%m-%d') entered_date = entered_date.date() delta = datetime.timedelta(days=3) target_date = entered_date - delta day = 1 for x in range(0,7): delta = datetime.timedelta(days=x+day) new_date = target_date + delta maximumProdQuantity = prod.quantity quantityReserve = Booking.objects.filter(date_select=new_date, product=prod).aggregate(Sum('quantity'))['quantity__sum'] if quantityReserve == None: quantityReserve = 0 quantityAvailable = prod_quantity - quantityReserve data1 = {'maximum_guest': maximumProdQuantity, 'available': quantityAvailable, 'date': new_date} merge.append(data1) return merge except self.model.DoesNotExist: return rc.NOT_HERE in my code: this line sets the date: for x in range(0,7): delta = datetime.timedelta(days=x+day) new_date = target_date + delta

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  • database logic for tracking each and every operation in my web application

    - by ripa
    I am developing an Web application. In my application, I need to keep track of each and every operation for every logged in user. I have planned following for achieving this task:- I will create stored procedure in mysql. I will trigger this procedure on each table's insert , update delete. This is an tough job for me. Will anybody direct me in the right way? I am using PHP based Codeigniter framework and mysql database.

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  • Best computer-science universities in Europe?

    - by Tom
    I am in 11th grade and only one year left when I finish my school. I am sure I want to dedicate my life to programming. In my country the education's level is not so high as in Europe, so I want to emigrate and study not just for a diploma, but for knowledge too. So, what universities would you suggest me which has subject Computer-Science? I prefer web programming. Please do not delete this message though it is quite offtopic, but it's the best place for me to get suggestions from advanced programmers who have already finished their university. And I hope here comes also teenagers who can make the best decision choosing university. Thank you. Please read the whole my message before voting to close this thread, thanks.

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  • How to handle different roles with different previliges in PHP?

    - by user261002
    I would like to know how we can create different "user Roles" for different users in PHP. example: Administrator can create all types of users, add, view, manipulate data, delete managers, viewers, and workers, etc managers can only create, workers and viewers, can add and view data, workers can't create new users, but can only add data and view data, viewers can only view data that has been added to the DB by workers, managers and administrators. I though its better to use different sessions like : $_SESSION['admin'] $_SESSION['manager'] $_SESSION['worker'] $_SESSION['viewvers'] and for every page check which of them have a true or yes value, but I want to know how do they do it in real and big projects??? is there any other way???

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  • Empty accessors do matter?

    - by Petr
    Hi, I have following code that does not work due to "a" being a value typed. But I thought it would not work even without accessors, but it did: class Program { a _a { get; //when both accessors deleted, it will work set; } static void Main(string[] args) { Program p = new Program(); p._a.X = 5; } } struct a { public int X; } It does not work as "a" is struct. But when I delete accessors from "_a" instance, it works. I do not understand why. Thanks

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  • Will Django user permissions work for models with inline tabular forms of other models?

    - by stinkypyper
    I am setting up DJango admin to make a model editable. On the same page I have tabular inline of a child model. Everything works as expected. Now I want to restrict permission on the tabular inline child form. Specifically remove update and delete permissions on it. I have tried removing the permissions for the admin user using the 'user permissions' of that user. However, it does not work. Does DJango respect the user permissions in regards to inline model forms?

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  • vim - how am I suppose to read this command to remove all blanks at the end of a line

    - by whaley
    I happened across this page full of super useful and rather cryptic vim tips at http://rayninfo.co.uk/vimtips.html. I've tried a few of these and I understand what is happening enough to be able to parse it correctly in my head so that I can possibly recreate it later. One I'm having a hard time getting my head wrapped around though are the following two commands to remove all spaces from the end of every line :%s= *$== : delete end of line blanks :%s= \+$== : Same thing I'm interpreting %s as string replacement on every line in the file, but after that I am getting lost in what looks like some gnarly variation of :s and regex. I'm used to seeing and using :s/regex/replacement. But the above is super confusing. What do those above commands mean in english, step by step?

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