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  • require_owner code to limit controller actions not recognizing current user as owner

    - by bgadoci
    I am trying to restrict access to certain actions using a before_filter which seems easy enough. Somehow the ApplicationController is not recognizing that the current_user is the owner of the user edit action. When I take the filter off the controller correctly routes the current_user to their edit view information. Here is the code. Link to call edit action from user controller (views/questions/index.html.erb): <%= link_to "Edit Profile", edit_user_path(:current) %> ApplicationController (I am only posting the code that I think is affecting this but can post the whole thing if needed). class ApplicationController < ActionController::Base def require_owner obj = instance_variable_get("@#{controller_name.singularize.camelize.underscore}") # LineItem becomes @line_item return true if current_user_is_owner?(obj) render_error_message("You must be the #{controller_name.singularize.camelize} owner to access this page", root_url) return false end end and the before_filter class UsersController < ApplicationController before_filter :require_owner, :only => [:edit, :update, :destroy] #... end I simply get the rendering of the error message from the ApplicationController#require_owner action.

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  • SQL conditional Pivot

    - by Coov
    Yes, this is another Pivot question... I've read through nearly all the previous questions and I can't seem to hack together a query that does what I need. Here is what my table looks like: FirmName Account Balance Pmt Revolving Installment Mortgage Amex 12345 10000 2000 1 0 0 Discover 54321 20000 4000 1 0 0 Chase 13579 100000 1500 0 0 1 Wells Fargo 2468 40000 900 0 1 0 The last three bit columns (Revolving, Installment, & Mortgage) dictate how the columns should be rolled up into a type. Each result requires three columns based on the type and its row count. The outcome should be one row with many columns. Here is what the result should look like: Revolving1_Firm Revolving1_Balance Revolving1_Pmt Revolving2_Firm Revolving2_Balance Revolving2_Pmt Realestate1_Firm Realestate1_Balance Realestate1_Pmt Vehicle1_Firm Vehicle1_Balance Vehicle1_Pmt Amex 10000 2000 Discover 20000 4000 Chase 100000 1500 Wells Fargo 40000 900 How do you pivot based on the bit fields (Revolving, Installment, & Mortgage) and retain the proper count so that that each column gets count # appended to it?

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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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  • Why can't I save CSS changes in FireBug?

    - by Dean
    FireBug is the most convenient tool I've found for editing CSS - so why isn't there a simple "Save" option? I am always finding myself making tweaks in FireBug, then going back to my original .css file and replicating the tweaks. Has anyone come up with a better solution? EDIT: I'm aware the code is stored on a server (in most cases not my own), but I use it when building my own websites. Firebug's just using the .css file FireFox downloaded from the server, it knows precisely what lines in which files its editing, I can't see why there's not an "Export" or "Save" option which allows you to store the new .css file. (Which I could then replace the remote one with). I have tried looking in temporary locations, and choosing file-save and experimenting with the output options on FireFox, but I still haven't found a way. Here's hoping someone has a nice solution... EDIT 2: The Official Group has a lot of questions, but no answers.

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  • A galaxy with stars, milkyway and other stuffs (WPF)

    - by boj
    What is a "realistic" way to build a galaxy in 2D with wpf? I'm not interessed in the physical modelling but the graphical aspect. At least the stars (position, size, color, pulsing etc.) should be generated from code. Generating milkyways would be nice. Main questions are: Stars: lens flare? texturing? Milkyway: bump mapping? "Far" stars: textures? generated? Pulsing? other elements, any effects are welcome! Some examples (taken from the web, I want to build similar pictures (animations) with wpf): Thank you.

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  • Timeout with GAE Java

    - by user242153
    Hi, I am having some issues with an app I have deployed on GAE. Specifically, I am intermittently running into the DeadlineExceededException where the server is not responding within the 30 seconds required. What is odd is that the code is not overly complex, it should run in milliseconds. My guess is that the delay is in dealing with the persistence manager and accessing the datastore. 2 questions: 1) What is the best way to track where all of the CPU time on the server is being used up? Log files do not seem helpful and to make things more complicated the code runs very fast when I am running it locally 2) Any tips / best practices in dealing with the 30 second exception? What are the biggest drivers of this? Datastore? HTTP requests / responses? Thanks

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  • Checking online users with Facebook Javascript SDK

    - by Roman
    Hi, I'm trying to build some kind of a social game in facebook, where I need that every user that has approved my APP is able to receive notifications from me. When the user approves my App, I save his UID in the DB for future reference. At some later time, I want to make it possible for other users find partners for a game - so I need a way to pick randomly some user from my DB and check if he's online. Then, send him a message and propose to play with the current player. So 2 questions: How can I check if some user is online, using Javascript SDK? It seems that in the new Graph API I can't get the users' online status. How can I then send him a message and propose to play the game? When he approves to play - he is being forwarded to the game page. Many thanks in advance, Roman

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  • Optional attribute values in MappedField

    - by David Brooks
    I'm new to Scala and Lift, coming from a slightly odd background in PLT Scheme. I've done a quick search on this topic and found lots of questions but no answers. I'm probably looking in the wrong place. I've been working my way through tutorials on using Mapper to create database-backed objects, and I've hit a stumbling block: what types should be used to stored optional attribute values. For example, a simple ToDo object might comprise a title and an optional deadline (e.g. http://rememberthemilk.com). The former would be a MappedString, but the latter could not be a MappedDateTime since the type constraints on the field require, say, defaultValue to return a Date (rather than a Date or null/false/???). Is an underlying NULL handled by the MappedField subclasses? Or are there optional equivalents to things like MappedInt, MappedString, MappedDateTime that allow the value to be NULL in the database? Or am I approaching this in the wrong way?

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  • CRM mail merge and Word Macros/FILLINs

    - by xt_20
    Hi all, I'm currently using Microsoft CRM4 Mail merge function, which stores Word files as XML files inside CRM. My client has a requirement to prompt the user for more information (not found in CRM) upon mail merging. Previously, we used the Word 'FILLIN' commands, but it does not work with CRM mail merge as it only prompts the user before printing, not upon opening a Word file. I attempted using Macros, but can't seem to save macros to Microsoft Word 2003 XML file format. My questions: 1. Is there any way to get 'FILLIN' to prompt the user upon opening the mail merged file? 2. Can I store macros in Word 2003 XML file format? 3. Any other way around it, that involves merging CRM records with a Word file, and prompting the user for more information not already found in CRM? Many thanks for your help, AR

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  • Using javascript on an HTML table?

    - by Michael McKay
    Hi, few questions, just wondering if anyone can help? I have a table with 1 long row (1000 pixels) and one single column, how do i go about creating a method whereby when the mouse cursor is on the leftmost side of the cell, a variable, lets say X is set to 0, the further right the mouse cursor moves in the cell, the value of X increases. I know that sounds like a strange question but im working on a project where this type of functionality is desired. Is there a javascript method to create this feature? Thanks for any help.

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  • align WMD editor's preview HTML with server-side HTML validation (e.g. no embedded javascript)

    - by Justin Grant
    There are many SO questions (e.g. here and here) about how to do server-side scrubbing of Markdown produced by the WMD editor to ensure the HTML generated doesn't contain malicious script, like this: <img onload="alert('haha');" src="http://www.google.com/intl/en_ALL/images/srpr/logo1w.png" /> This doesn't affect the WMD client's preview box. I doubt this is a big deal since if you're scrubbing the HTML on the server, an attacker can't save the bad HTML so no one else will be able to see it later and have their cookies stolen or sessions hijacked by the bad script. But it's still kinda odd to allow an attacker to run any script in the context of your site, and it's probably a bad idea to allow the client preview window to allow different HTML than your server will allow. StackOverflow has clearly plugged this hole. How did they do it? [NOTE: I already figured this out but it required some tricky javascript debugging, so I'm answering my own question here to help others who may want to do ths same thing]

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  • NSAutoreleasePool carrying across methods?

    - by Tim
    I'm building an iPhone application where I detach some threads to do long-running work in the background so as not to hang the UI. I understand that threads need NSAutoreleasePool instances for memory management. What I'm not sure about is if the threaded method calls another method - does that method also need an NSAutoreleasePool? Example code: - (void)primaryMethod { [self performSelectorInBackground:@selector(threadedMethod) withObject:nil]; } - (void)threadedMethod { NSAutoreleasePool *aPool = [[NSAutoreleasePool alloc] init]; // Some code here [self anotherMethod]; // Maybe more code here [aPool drain]; } - (void)anotherMethod { // More code here } The reason I ask is I'm receiving errors that objects are being autoreleased with no pool in place, and are "just leaking." I've seen other questions where people didn't have autorelease pools in place at all, and I understand why an autorelease pool is needed. I'm specifically interested in finding out whether an autorelease pool created in (in this example) threadedMethod applies to objects created in anotherMethod.

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  • Huge AS 3.0 Export Frame

    - by goorj
    I am creating a very simple flash animation with no code or complex effects, just text and simple tweens (Flash CS5) But I have problems reducing the size of my swf. From the generated size report, it looks like it has to do with fonts and/or exported actionscript classes. The frame with AS 3.0 Classes is over 100K, and even though I am only using one fonts, the same characters are embedded/exported multiple times My questions are: Do embedding of mixed TLF/Classic text (or mixing other text properties, spacing/kerning etc) require the same characters to be embedded twice? Do text transformations on TLF text (rotation and different transformations not available in classic text) require embedding of ("internal") AS3 classes that will increase the size of the .swf? (even though none of these classes are explicitly used by me, there are no scripts in the fla project) I have tried removing all the text instances one by one, and at one point, the swf is reduced to only 5-6K, but I am not able to pinpoint exactly what causes the ballooning of the swf

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  • ASP.NET MVC Generic Controllers and Spring.NET

    - by Jason
    Hello, I am creating an application using ASP.NET MVC (2) and Spring.NET. Since most of my Controller implementations just implement the similar CRUD operations, I would like to just create a single Generic controller, as explained here: http://stackoverflow.com/questions/848904/in-asp-net-mvc-is-it-possible-to-make-a-generic-controller However, the above example doesn't take DI frameworks into consideration. What I'm thinking is to create this (warning: this is an ugly mass of code I need help with): public SpringGenericControllerFactory : DefaultControllerFactory { public IController CreateController(RequestContext requestContext, string controllerName) { // Determine the controller type to return Type controllerType = Type.GetType("MyController").MakeGenericType(Type.GetType(controllerName)); // Return the controller return Activator.CreateInstance(controllerType) as IController; } } The entries in objects.xml would look something like this: <object id="controllerFactory" type="Application.Controllers.SpringGenericControllerFactory" /> <object id="DepartmentController" factory-method="CreateController" factory-object="controllerFactory" /> Can anyone pick through this and offer advice?

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  • New instruction sets in CPU

    - by Tomek Tarczynski
    Every new generation of CPU introduces some sets of new instruction, ie.: MMX,3DNOW,SSE and so on. I've got few general questions about them: 1) If some program uses for example SSE instruction can it be run on CPU that doesn't support SSE? 2) If yes , does it mean that those instuction will be changed to some greater number of simpler instuctions? 3) If not, does it mean that the real perfomance impact of such new instructions will be after few years when most CPU will support such technology (so there won't be any incompatibilities)? 4) When I compile a C++ program with optimizations does it mean that it'll use some of this new instructions? (I know that it depends on many factors, especcialy on the code, but I want some general answer) Or are they reserved mostly for programs written in asm?

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  • MVVM View reference to ViewModel

    - by BrettRobi
    I'm using MVVM in a WPF app. I'm very new to both. Let me state that I am not a purest in the MVVM pattern, I am trying to use as many best practices as I can but am trying to make what I think are reasonable compromises to make it work in our environment. For example, I am not trying to achieve 0% code in my View codebehind. I have a couple of questions about best practices. 1) I understand I don't want my VM to know about the attached View, but is it reasonable for the View to have a reference to its VM? 2) If a control in a View opens another View (such as a dialog) should I handle this in the View? It seems wrong to handle it in the VM since then the VM has some knowledge of a specific View.

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  • Returning values from Swing using invokeAndWait

    - by Joonas Pulakka
    I've been using the following approach to create components and return values from Swing to/from outside the EDT. For instance, the following method could be an extension to JFrame, to create a JPanel and add it to the parent JFrame: public JPanel threadSafeAddPanel() { final JPanel[] jPanel = new JPanel[1]; try { EventQueue.invokeAndWait(new Runnable() { public void run() { jPanel[0] = new JPanel(); add(jPanel[0]); } }); } catch (InterruptedException ex) { } catch (InvocationTargetException ex) { } return jPanel[0]; } The local 1-length array is used to transfer the "result" from inside the Runnable, which is invoked in the EDT. Well, it looks "a bit" hacky, and so my questions: Does this make sense? Is anybody else doing something like this? Is the 1-length array a good way of transferring the result? Is there an easier way to do this?

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  • Time to ignore IE?

    - by Delan Azabani
    In this answer: http://stackoverflow.com/questions/2781013/does-anyone-have-a-easy-to-use-png-fix-for-ie/2781041#2781041 which got voted down considerably, I point out the need to ignore Internet Explorer, or at least its old version 6, for the following reasons: It is hard to hack for, and some features don't exist at all The more you hack for IE, the longer people blindly use it (vicious cycle) My website, azabani.com, doesn't hack for IE at all. The layout looks somewhat broken in the browser, and most of my projects require features not present in IE's codebase. I would like to know if you support my view, or if you share views with those who downvoted my answer.

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  • To join or not to join - database structure

    - by Industrial
    Hi! We're drawing up the database structure with the help of mySQL Workbench for a new app and the number of joins required to make a listing of the data is increasing drastically as the many-to-many relationships increases. The questions: Is it really that bad to merge tables where needed and thereby reducing joins? Is there a better way then pivot tables to take care of many-to-many relationships? We discussed about instead storing all data in serialized text columns and having the application make the sorting instead of the database, but this seems like a very bad idea, even though that the database will be heavily cached. What do you think? Thanks!

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  • Beginning VSTO development

    - by idazuwaika
    Hi, I'm quite confused with what are the necessary tools for VSTO develpment. Specifically I want to manipulate Excel 2003/2007 documents programmatically. I did quite a lot of VBA before, if you want to relate any answer to that. Few questions I have about VSTO: Can I use Visual Studio 2008 Express Edition C#/C++ for this? Do I need to have .NET framework installed? Does the resulting VSTO program need to have a copy of Office installed in the same system to run? Direct links to the relevant tools/plugins/IDE will be appreciated. Note: I'm totally new to VSTO and .NET but an Office power user. Have experience with COM programming. Thanks.

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  • Tabcompletion and docview while editing rc.lua

    - by Berxue
    I saw that there is a lua plugin for eclipse and there is a docpage on the awesome main page api_doc and all the .lua files in /usr/share/awesome/lib. So I thought it must be possible to create a Library or Execution Environment so that one has tabcompletion and docview. So I tried making my own Execution Environment: wrote the standard .rockspec file downloaded the documentation made an ofline version of it and put it in docs/ folder ziped the files and folders in /usr/share/awesome/lib ziped all up tried it out ... and it failed. When I try to view a documentaion for a .lua file I get "Note: This element has no attached documentation." Questions: Am I totaly wrong in my doing (because I have the feeling I am)? Is there any way to edit the rc.lua with tabcompletion and docview?

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  • Software Protection: Shuffeling my application?

    - by Martijn Courteaux
    Hi, I want to continue on my previous question: http://stackoverflow.com/questions/3007168/torrents-can-i-protect-my-software-by-sending-wrong-bytes Developer Art suggested to add a unique key to the application, to identifier the cracker. But JAB said that crackers can search where my unique key is located by checking for binary differences, if the cracker has multiple copies of my software. Then crackers change that key to make them self anonymous. That is true. Now comes the question: If I want to add a unique key, are there tools to shuffle (a kind of obfuscation) the program modules? So, that a binary compare would say that the two files are completely different. So they can't locate the identifier key. I'm pretty sure it is possible (maybe by replacing assembler blocks and make some jumps). I think it would be enough to make 30 to 40 shuffles of my software. Thanks

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  • How do you reach a "flow" state while programming?

    - by acrosman
    I'm not talking about program flow, but as in the state of working called flow, the state where you can get great work done the most effectively. I find that my current work environment while good in many ways does not allow me to get into a good state of mind for writing code most of the time (my job includes many other functions). If it's critical to get something done I'll often put on head-phones with classical music and try to drown out the office noise around me (and discourage co-workings from asking me questions). I am best able to get work done late in the evening when the house is quite and I've been thinking about the project for most of the day. What tricks have you found when working in less then perfect office environments?

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  • converting GPS latitude/longitude from different formats to one format (in PHP)

    - by Dave
    Hi. i'm trying to built in support for locations in my application and i'm expecting users to be inputting gps coordinates in a variety of ways. I need to convert all of the below to: latitude - direction (N/s), degres, minutes, seconds; longitude (E/W) - degrees, minuts, seconds. Each user input will be in a single line. eg: 9.182, -39.140625 9.182 / -39.140625 9.182,-39.140625 9.182 -39.140625 21° 16' 674S[some_separator]27° 30' 318E 21 16 674S[some_separator]27 30 318E [some_separator] may be a single space as well... The final format needs to beas: latitude.direction = south latitude.degrees = 21 latitude.minutes = 16 latitude.seconds = 674 longitude.direction = east longitude.degrees = 27 longitude.minutes = 30 longitude.seconds = 318 (a) what is the simplest way of asking ordinary-non-tech users to input the GPS coordinate?s (b) how do i convert the above to the final format? any built in functions that handle these variations in data input? i've seen http://stackoverflow.com/questions/2548943/gps-format-in-php - but i need to handle a more varied input.

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  • SQL trigger for audit table question

    - by mattgcon
    I am writing a trigger to audit updates and deletes in tables. I am using SQL Server 2008 My questions are, Is there a way to find out what action is being taken on a record without going through the selection phase of the deleted and inserted tables? Another question is, if the record is being deleted, how do I record within the audit table the user that is performing the delete. (NOTE: the user connected to the database is a general connection string with a set user, I need the user who is logged into either a web app or a windows app) Please help?

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