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  • rails update whole index of a model with one click

    - by mattherick
    hello! i have a store model, this will handle my leaflet and my shoppingcart for my shop. now i d´like to show all items added from an user to his leaflet in the index of store. in the store an user can change the quantity of the choosen items. and now i want to save that the changes of the different quantities in the database with one click on a button "update store". so how could i implement an update over the whole index with one click? i´d like to do this with ajax and most dynamically. somebody has an idea? i render all items into a form so far, but now i have the problem, when i submit this form only the last quantity and item id are included in the params. further i pushed every quantity into an array and i want to submit this also as a param. but i could not. please give me some tips, will be very fine :) mattherick

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  • iPhone TabBar selection cancelling

    - by Chris Schnyder
    I am developing an iPhone app that displays several views, all acessed via Tab Bar items. However I need to add an additional item to the Tab Bar that simply launches a URL in Safari. I've accomplished this by adding an empty placeholder view to the TabBar and returning FALSE from shouldSelectViewController when the this view's tabBarItem is clicked on, and launching Safari at the same time. That code is: - (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController { if([[viewController tabBarItem] title] == "Website"){ //... launch Safari return FALSE; } else { return TRUE; } } PROBLEM: If the TabBar has too many items, and this "Safari Launch" tab is pushed off to the "More" navigation controller, I lose the capability to intercept the event and prevent the view from loading when clicked. Any suggested tips?

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  • Should I unit test my JavaScript?

    - by Joseph Silvashy
    I'm curious to if it would be valuable, I'd like to start using QUnit, but I really don't know where to get started. Actually I'm not going to lie, I'm new to testing in general, not just with JS. I'm hoping to get some tips to how I would start using unit testing with an app that already has a large amount of JavaScript (ok so about 500 lines, not huge, be enough to make me wonder if I have regression that goes unnoticed). How would you recommend getting started and Where would I write my tests? (for example its rails app, where is a logical place to have my JS tests, it would be cool if they could go in the /test directory but it's outside the public directory and thus not possible... err is it?)

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  • How to think in data stores instead of databases?

    - by Jim
    As an example, Google App Engine uses data stores, not a database, to store data. Does anybody have any tips for using data stores instead of databases? It seems I've trained my mind to think 100% in object relationships that map directly to table structures, and now it's hard to see anything differently. I can understand some of the benefits of data stores (e.g. performance and the ability to distribute data), but some good database functionality is sacrificed (e.g. joins). Does anybody who has worked with data stores like BigTable have any good advice to working with them?

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  • How can I build a Truth Table Generator?

    - by KingNestor
    I'm looking to write a Truth Table Generator as a personal project. There are several web-based online ones here and here. (Example screenshot of an existing Truth Table Generator) I have the following questions: How should I go about parsing expressions like: ((P = Q) & (Q = R)) = (P = R) Should I use a parser generator like ANTLr or YACC, or use straight regular expressions? Once I have the expression parsed, how should I go about generating the truth table? Each section of the expression needs to be divided up into its smallest components and re-built from the left side of the table to the right. How would I evaluate something like that? Can anyone provide me with tips concerning the parsing of these arbitrary expressions and eventually evaluating the parsed expression?

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  • doctrine behaviors , if i did it like this , would be correct ??

    - by tawfekov
    Hi , I am doing a web application in ZF + Doctrine 1.2.3 but i had an old database , it had pretty good structure so i think i can reverse engineer it with doctrine commad ./dcotrine generate-models-db , its amazing but i stopped when i wanted to use some doctrine behaviors like : searchable as an example , my question : if i went to my model and added these two lines : $this->actAs('Searchable', array( 'fields' => array('title', 'content') ) ); i am not sure if that enough and would work as expected , if you had any more tips about creating other behaviors like (versionable , i18n , sluggable or soft delete ) manually or reverse engineer it with doctrine behaviors , could you please list them

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  • IE Problem: Jagged Scrolling and Dragging Inside Large Viewport

    - by br4inwash3r
    My site is a single page website with a very large "canvas" size. and to navigate around the site i'm using jquery scrollTo and jquery Dragscrollable plugin. in IE 7 & 8 the scrolling/dragging movement is very jagged. at first i thought it was my script or some other plugin that's causing this. but after i stripped down everything it's still the same. i've tried a few tips i've found around here. but none is really working for me. i know i should be asking this question to the plugin developers. i did.. i just thought maybe you guys have some other solution for this issue. here's the URL to the demo site: http://satuhati.com/bare/template/ really appreciate any help u can give :) thx..

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  • What are the Hot and Cold observables?

    - by Sergey Aldoukhov
    I watched the video and I know the general principles - hot happens even when nobody is subscribed, cold happens "on demand". Also, Publish() converts cold to hot and Defer() converts hot to cold. But still, I feel I am missing the details. Here are some questions I'd like to have answered: Can you give a comprehensive definition for these terms? Does it ever make sense to call Publish on hot observable or Defer on cold? Is there differences between hot and cold definitions for IObservable and IEnumerable? What are the general principles you should take into account when programming for cold or hot? Any other tips on hot/cold observables?

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  • Open Source alternative to lablife

    - by Yauhen Yakimovich
    I am looking for an Open Source alternative to SAAS provided by lablife.org website. Main purpose of the service is to automate daily tasks for life science laboratory. This service was free and nice to use, but when the original company developing this service was bought by BioData they kind of decided to kill and replace it with a new service called labguru. Apparently, a new service has a lot of functionality missing or just bad. That's why I am on a search for an alternative solution. So if you are familiar with what this software does - and if there are any known alternatives, I would be very grateful for any of your tips.

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  • Virtual pages for my plugin

    - by Fini
    Hi, I am currently in the process of making a WordPress Plugin which is going to parse some external data (products) from various web services and present them as normal pages in WordPress. I would like to avoid actually creating the pages programatically and instead just generate them on the fly to avoid any synchronization issues if a product is deleted and so forth. My plugin is going to have a base url in which it will hook on to, for example /products/, and then I would generate each product page by calling /products/some-product-name/. I also anticipate the need for uri's like /products/category/some-category-name/ which I will use to list all items in that category. Since I am new to WordPress plugin development, I am looking for some tips and advice to get me started on the right foot. Any help is highly appreciated ;)

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  • Generating Graph with 2 Y Values from Text File

    - by Joey jie
    Hi all, I have remade my original post as it was terribly formatted. Basically I would like some advice / tips on how to generate a line graph with 2 Y Axis (temperature and humidity) to display some information from my text file. It is contained in a textfile called temperaturedata.txt I have included a link to one of my posts from the JpGrapher forum only because it is able to display the code clearly. I understand that since it is JpGraph problem I shouldn't post here however the community here is a lot more supportive and active. Many thanks for all your help guys in advance! my code

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  • Get HttpResponse from a page in the same web application

    - by tivo
    I have the following code: HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://mycomputer/myWebApp/WebPage2.aspx"); myHttpWebRequest.Credentials = CredentialCache.DefaultNetworkCredentials; HttpWebResponse myHttpWebResponse = HttpWebResponse)myHttpWebRequest.GetResponse(); The last line of code throws a (500) Internal Server Error... This code is part of myWebApp/WepPage1.aspx, yes both aspx pages are on the same webapp. What I want to accomplish is to get WebPage2.aspx html response, put it on an email and send it from WebPage1.aspx. I would really appreciate any tips.. Thanks!!!

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  • How do I use a command line tool to install .net 4 to IIS

    - by tehp
    I'm trying to deploy my WCF RIA services application to our in-house server for testing. I've been following the instructions and comments from this blog site: http://timheuer.com/blog/archive/2009/12/10/tips-to-deploy-ria-services-troubleshoot.aspx At the end someone points to this question: http://stackoverflow.com/questions/1528324/how-to-solve-a-http-error-404-3-not-found-error I've been trying to run that same tool with .net 4.0 but it keeps giving me an error: [Warning]The HTTP namespace reservation already exists. I am running the version of the exe that I found inside of C:\Windows\Microsoft.NET\Framework\v4.0.21006 There is also C:\Windows\Microsoft.NET\Framework\v3.0\Windows Communication Foundation that has (what I assume is) the same exe in it, and I can use it just fine. I've tried to un-install the 3.0 version before installing the 4.0 version, but I am still getting the same warning and failure. Has anyone successfully done this with .net 4.0?

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  • How to find a programmer for my project?

    - by Al
    I'm building a web application to generate monthly subscription fees, but I've quickly realised I'm going to need some help with the project to finish it this century. I don't have any money upfront for a freelancer and every website I've found takes bids for project work. The tasks that need doing are flexible too because I can do whatever the other coder doesn't want to. I'm also happy to guide the developer and offer tips for performance/security/etc etc. My question is; how do I go about finding someone to work with on a profit-share basis? I'm sure there are a billion people like me with the "next killer app" but I genuinely believe in it. Can anyone offer some advice? Thanks in advance! EDIT: I guess the trick is to find someone passionate enough about the subject as I am. Where would I find someone? Are there websites that broker profit-share deals on programming work?

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  • maya "export all" window blocks my plugins script UI

    - by Hinchy
    I'm writing a custom File Translator for Maya which can export only (I have only declared the writer function). Currently having a problem with the MEL script which defines the plugin's options as a GUI. Currently I have a blank Maya scene, go to "file-export all". This creates the "File Export All" dialog, I then select my plugin exporter which runs my MEL script to create the bespoke options window. This new window is created behind the "File Export All" dialog and is not selectable! Do I have to place my export plugin specific options within the export all dialog rather than placing them in a separate window? Thanks for any links, tips or pointers you can provide.

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  • Visual Studio 2010 Database Projects: Are there any videos/tutorials or comments about the new Datab

    - by Mark Redman
    I have recently upgraded to Visual Studio 2010. I have kept database projects separate to application projects. The database project was converted from and old DPR project and added a whole lot of additional folder. I deleted those, but now I suspect I need to recreate the project as these new projects work very differently. Now that I have need to update scripts, it seems I can even paste new SQL files into the project so am a bit stuck. Are there any tutorials / walkthrough that show the basics on starting and creating a database project? Or even better a video? Also if there are any tips and tricks or comments on this, I will be happy to hear them?

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  • Developer Curriculum Vitae - "Experience"

    - by Neil Barnwell
    I've been involved in some interviews at work recently, and having seen a few CVs, I've been thinking of my own. I wonder how I might rate my proficiency at the various technologies I've worked with on some sort of simple scale: Beginner, Intermediate, Expert. I've been doing C# for a few years now, but I'd hesitate to call myself "expert" particularly (partly because surely I haven't been doing it long enough, and partly because I can't bring myself to be so bold as to say I'm expert at anything). I think I probably was expert at VB back when I got into programming, but any VB skills I had will have deteriorated by now. Of course I wouldn't even bother listing things on my CV that I'd consider myself to be "beginner" at, I'd just add them to the "other tech" category, but I'd be interested to hear tips on helping me decide.

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  • How to update the original InfoPath form from within Workflow?

    - by Allen.Zhang
    Hi All, I have created an InfoPath form (e.g. Form_ExpenseReport) for collect data from end users, and a number of task forms (also InfoPath form, e.g. TaskForm_1, TaskForm_2) for my state machine workflow use. The users want to see all the comments of Task forms (TaskForm_1 & TaskForm_2) in the original IP form (Form_ExpenseReport). How can I update the first form from within workflow? Can anybody give me some tips? My environment: MOSS 2007 Enterprise license VS 2008

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  • Sum value of XML attributes using PowerShell 2.0

    - by Yooakim
    I have a directory with XML files. I quickly want to go through them and sum upp the value stored in one attribute. I have figured out how to fidn the nodes I am interested in. For example: (Select-Xml -Path .\*.xml -XPath "//*[@Attribue = 'valueImlookingfor']").Count This command gives me the count of elements in all of the XML files in the current directory which has the value "valueImlookingfor" in the "Attribue". I want to sum up all the values of the "Attribute", not count them. What would be the best way to do this in PowerShell? I am new to PowerShell so this may be trivial but un-known to me... All tips are much appreciated :-)

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  • How does a programmer think?

    - by Gordon Potter
    This may be a hopelessly vague question. But I am interested to hear whatever logical thought processes people go through when learning a new concept or trying to get their brain around code they might not have ever seen before. Basically, what general steps does one take to to break down problems and what does it take to "get it"? If you were to diagram a flowchart of how your mental process works when you look at code or try to solve a problem what might it look like? What common references, tips, and mental assumptions do you find useful in problem solving? How is this different between different domains? For example in what ways is a web programmer's thought process similar or different from a traditional desktop app developer's process?

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  • AVPlayer seeking to a different point after app resume

    - by CGuess
    I have an AVPlayer, the video in it is ~2 seconds long. After the video plays, if the app goes to the background and reenters the foreground I need the video to still be shown exactly as it was when the app was exited. The AVPlayer sticks around just fine, however when I reenter the app from the background the video appears to be seeked to the middle of the video. However, if I just play the video, it starts from the beginning, so it doesn't seem like it actually seeked and is just showing a preview image. I've tried to auto-seek the video to the end on relaunch but nothing happens . Nothing I can figure out or find in the docs would describe this behavior. Any tips on having the video launch either at the beginning or end?

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  • Performance concern when using LINQ "everywhere"?

    - by stiank81
    After upgrading to ReSharper5 it gives me even more useful tips on code improvements. One I see everywhere now is a tip to replace foreach-statements with LINQ queries. Take this example: private Ninja FindNinjaById(int ninjaId) { foreach (var ninja in Ninjas) { if (ninja.Id == ninjaId) return ninja; } return null; } This is suggested replaced with the following using LINQ: private Ninja FindNinjaById(int ninjaId) { return Ninjas.FirstOrDefault(ninja => ninja.Id == ninjaId); } This looks all fine, and I'm sure it's no problem regarding performance to replace this one foreach. But is it something I should do in general? Or might I run into performance problems with all these LINQ queries everywhere?

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  • Limiting the maximum number of concurrent requests django/apache

    - by Johan
    Hi, I have a django site that demonstrates the usage of a tool. One of my views takes a file as input and runs some fairly heavy computation trough an external python script and returns some output to the user. The tool runs fast enough to return the output in the same request though. I would however want to limit how many concurrent requests to this URL/view to keep the server from getting congested. Any tips on how i would go about doing this? The page in itself is very simple and the usage will be low.

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  • Stop default hashtag behavior with jquery

    - by scatteredbomb
    I'm using the following code to append a hashtag to the end of a url. That way someone can copy that url and take them back to that page, with certain divs visable. $("a.live").click(function() { window.location.hash = 'live'; $("#live).slideDown(); }); In this example I have a div called 'live', that would slideDown when a link is clicked, and '#live' added to the url. Then I have code that checks the hash tags when the page is loaded to show the proper divs. My problem is, how do I prevent the browser from jumping to the 'live' div once it's called? I don't want the page to scroll down to the div, just want it opened and the hashtag appended so a person could copy it and come back to that page with that div showing. Any tips? Thank you!

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  • Sending email from Drupal contact form, but GMail marks it as "Forged"

    - by James Shields
    Hi, My Drupal site sends email to a GMail account, but the emails sent all go into the Spam folder, and GMail puts up a bar with the message "This message was likely forged and did not originate from your account." Although I can create a filter to prevent them going to Spam, I want to start sending newsletters, and I suspect they'll have the same problem. I suspect the problem is with the way I've set up either PHP or Drupal to send mail. As far as I know it's just using the sendmail function. I've set the from address to "info@..." where ... is the site domain. Any tips on how I can make set up my outgoing mail so it won't be refused by GMail (and presumably other major mail providers)? Thanks, James

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