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  • Ruby on Rails, Array to HTML table, controller or view?

    - by SooDesuNe
    In my rails app the model is fetching some XML and returning an array. I want each array item (they are all text typed) to ultimately be a cell in an HTML table. Does the logic of turning the array elements into the HTML table belong in the controller or the view? Of course either will work, I'd like your thoughts on best practice.

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  • Converting Luabind to C#?

    - by themarshal
    Has anybody tried converting Luabind to C#? Is such a thing even possible? I've got an application that I want to convert so that it can run in a completely managed environment, but most of the game logic relies upon Lua scripts, and the application uses Luabind to manage the back-and-forth. I'm not familiar enough with Lua or Luabind to know what's involved. Am I on a fool's errand here?

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  • Spring MVC Best Practice Handling Unrecoverable Exceptions In Controller

    - by jboyd
    When you have a controller that does logic with services and DAO's that may throw an unrecoverable exception, what is the best practice in dealing with those method calls? Currently an app I'm working on has very lengthy try catch methods that simply err.out exception messages, this doesn't seem very robust and I think that this code smells, is there any cookie cutter best practice for handling this in spring-mvc?

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  • Signal processing or algorithmic programming for a PLC

    - by james singen smythe
    I have an application that takes voltages and temperatures as analog inputs and does some processing using an algorithm which involves signal processing such as low-pass filtering, exponential smoothing, and other steps which might typically be done in a high-level programming language such as C or C++. I'm curious how I could perform these same steps using a PLC, and in particular, the Allen-Bradley Control-Logix system? It seems to me that the instruction set with ladder logic is too limited for this. Could I perform this using structured text?

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  • Is there any performance advantage to using DirectorySearcher over SearchRequest for LDAP queries.

    - by WayneC
    I understand that System.DirectoryServices is a "layer above" System.DirectoryServices.Protocols and abstracts some of the complexity. Are there any other advantages, performance or otherwise, to using System.DirectoryServices.DirectorySearcher vs. System.DirectoryServices.Protocols.SearchRequest for LDAP queries from .NET. What criteria would cause you to use one approach over the other?

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  • Should you do validation checks that go outside the possiblility of normal user activity?

    - by Scarface
    Hey guys I have been thinking about form security a lot lately. I have been told time and time again to check if form input is a number if you are expecting a number or escape it in case (unless you use proper mysqli formatting) to avoid injection. 1.After the safety checks are done, should I do additional logic checks? For example, if the user is sending a friend request to them-self for example even if my user interface will not show the form if the user is looking at their own page.

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  • Classification of relationships in words?

    - by C.
    Hi, I'm not sure whats the best algorithm to use for the classification of relationships in words. For example in the case of a sentence such as "The yellow sun" there is a relationship between yellow and sun. THe machine learning techniques I have considered so far are Baynesian Statistics, Rough Sets, Fuzzy Logic, Hidden markov model and Artificial Neural Networks. Any suggestions please? thank you :)

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  • How can I use non-Silverlight assemblies in a Silverlight app?

    - by norbertB
    I'm working an project (pure hobby, "Sharping my skills") which has one unified back-end and multiple front-ends (ASP.NET MVC 1.0/JQuery and Silverlight 2). When I try to add reference to my business layer assembly in the Silverlight 2 project (VS2008); It gets rejected, because it's not a Silverlight assembly. Is their a way to include and reference a non-Silverlight assembly in a Silverlight app?

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  • Trying to add a skinClass to <mx:Form>

    - by rod
    I'm working with Flex4 and I'm trying to skin a form (add a background and a border to it, etc.) I'm trying to do it the Flex 4 way with skinClass="" <mx:Form skinClass="skins.MyFormSkin" /> but it's not accepting skinClass as a property. How should I do it such that I'm still adhering to the best practices in Flex 4 (decoupling visuals from logic)?

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  • JSON is used only for JavaScript?

    - by Bob Smith
    I am storing a JSON string in the database that represents a set of properties. In the code behind, I export it and use it for some custom logic. Essentially, I am using it only as a storage mechanism. I understand XML is better suited for this but I read that JSON is faster and preferred. Is it a good practice to use JSON if the intention is not to use the string on the client side?

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  • Simple caching mechanism in ASP.NET

    - by DotnetDude
    I had asked a question on how to implement real time updates in ASP.NET and received a very explanatory and a helpful answer from "jdk" at: http://stackoverflow.com/questions/2347771/how-to-implement-real-time-updates-in-asp-net I understand that memcached or .net caching application block can be used as the caching layer. Currently, I am looking for a very simple mechanism to implement this and do not have the resources for using memcached or the caching application block. Can someone suggest a solution?

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  • Possible to do rounded corners in custom Progressbar progressDrawable?

    - by b-ryce
    I have a progress bar that is supposed to look like the attached image: And I've made it a long way. I'm very close the only part that isn't working is the rounded corners for the progressDrawable. Here is what mine looks like. (Notice, circled in red, that the fill inside the white outline does not have rounded corners): So, I've found a couple of ways to make this work when the progress bar is colored in with a shape, gradient, or color. BUT, I can't get it with an image as the progressDrawable. Here is my class that extends ProgressBar public class RoundedProgressBar extends ProgressBar{ private Paint paint; public RoundedProgressBar(Context context) { super(context); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs) { super(context, attrs); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setup(); ; } protected void setup() { paint = new Paint(); } @Override protected synchronized void onDraw(Canvas canvas) { // First draw the regular progress bar, then custom draw our text super.onDraw(canvas); paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.STROKE); RectF r = new RectF(0,0,getWidth()-1,getHeight()-1); canvas.drawRoundRect(r,getHeight()/2,getHeight()/2, paint); } } Here is my selector: <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@android:id/background" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/progress" android:drawable="@drawable/slider_track_progress" /> </layer-list> Here are the images used in the selector: slider_track- slider_track_progress- Here is where I embed my progressbar in the layout for my activity <com.android.component.RoundedProgressBar android:id="@+id/player_hp_bar" android:layout_width="fill_parent" android:layout_height="36dip" android:layout_marginLeft="30dip" android:layout_marginRight="30dip" android:max="100" style="?android:attr/progressBarStyleHorizontal" android:progressDrawable="@drawable/slider_layer_list" android:progress="20" android:maxHeight="12dip" android:minHeight="12dip" /> Anyone know how to make this work?

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  • Database Schema Managing Framework/Library

    - by Karol Kolenda
    I'm looking for any database framework/library for .net which will act as a unified layer between an application and databases. Please note that I'm not interested in querying/updating data (there is plenty of DALs for that) but rather a framework which allows me to manage table schemas and indexes in a managed fashion (without using database specific SQL). I'm particularly interested in a library which supports Oracle, SQL Server and PostreSQL.

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  • Java Encryption issue

    - by r1k0
    I am using PBE encryption to encrypt and decrypt some text on an Android application but I get the BadPaddingException: with the "pad block corrupted" message when I use the wrong private key to decrypt the text. My question, since I am not well versed with encryption in Java, is if this is the normal behavior of the encryption API, because I need to do some logic in the case when the wrong key is entered, but I do not know the private key, nor do I store it anywhere (storing just the encrypted and decrypted check text). Thanks, Mihai

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  • WCF Translators

    - by chugh97
    Is there a better way in WCF werein we could avoid the translation betwee business entities and service entities, just to avoid the whole translator logic for complex entities.Any insight on this topic is welcome

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  • Access modifiers in Object-Oriented Programming

    - by Imran
    I don't understand Access Modifiers in OOP. Why do we make for example in Java instance variables private and then use public getter and setter methods to access them? I mean what's the reasoning/logic behind this? You still get to the instance variable but why use setter and getter methods when you can just make your variables public? please excuse my ignorance as I am simply trying to understand why? Thank you in advance. ;-)

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  • Capture iPhone screen with status bar included?

    - by Josh
    I am looking for a way to capture a screenshot on the iPhone with the top status bar included, I am currently using the following code: UIGraphicsBeginImageContext(self.view.bounds.size); //self.view.window.frame.size [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil); The above code sucessfully takes a screenshot of the iPhone UIView but does not include the top status bar (In its place is just a blank 20px space).

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  • Rendering javascript at the server side level. A good or bad idea?

    - by davidhong
    I want to make it clear first: This isn't a question in relation to server-side Javascript or running Javascript server side. This is a question regarding rendering of Javascript code (which will be executed on the client-side) from server-side code. Having said that, take a look at below ASP.net code for example: hlRemoveCategory.Attributes.Add("onclick", "return confirm('Are you sure you want to delete this?');") This is prescribing the client-side onclick event on the server-side. As oppose to: $('a[rel=remove]').bind('click', function(event) { return confirm('Are you sure you want to delete this?'); } Now the question I want to ask is: What is the benefit of rendering javascript from the server-side code? Or the vice-versa? I personally prefer the second way of hooking up client-side UI/behaviour to HTML elements for the following reasons: Server-side does what ever it needs to already, including data-validation, event delegation and etc; and What server-side sees as an event is not necessarily the same process on the client-side. i.e., there are plenty more events on client-side (just look at custom events); and What happens on client-side and on server-side, during an event, could be completely irrelevant and decoupled; and What ever happens on client-side happens on client-side, there is no need for the server to know. Server should process and run what is given to them, how the process comes to life is not really up to them to decide in the event of the client-side events; and so and so forth. These are my thoughts obviously. I want to know what others think and if there has been any discussions on this topic. Topics branching from this argument can reach: Code management: is it easier to render everything from server-side? Separation of concern: is it easier if client-side logic is separated to server-side logic? Efficiency: which is more efficient both in terms of coding and running? At the end of the day, I am trying to move my team to go towards the second approach. There are lot of old guys in this team who are afraid of this change. I just wish to convince them with the right facts and stats. Let me know your thoughts.

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  • ASP.Net MVC - What replaces events to support loose coupling?

    - by James
    What feature(s) of ASP.Net MVC can replace the way events can be used in Webforms to support loosely coupled components. For example, take a simple pager control: A page number is clicked Pager fires off a "PageChange" event with the new page number This subscribing page/control received the event and handles initiating a call to fetch and bind new data. What tools are available in ASP.Net MVC to support Loose coupling Component re-usability Separation of logic for a single page/view (such a very complex "portal" type page).

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  • Download file popup in IE not working it works well in Fire Fox

    - by Yogesh
    Hi window.location.href, using hidden Iframe and setting its source dynamically, setting return false; for onclick Nothing is working for IE. Basically, my dwr response generates a log file (foo.log) @business layer and it sends file name as response to dwr rpc request. Now I know the file name and its location I just want to download that file.(It works in FF not in IE).

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