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  • What types of objects should the ViewModel reference in the MVVM pattern?

    - by Blanthor
    I've seen quite a few examples of MVVM. I can see that the View should reference the ViewModel. I've seen recently an example of a ViewModel referencing a View, which seems wrong to me, as it would result in tighter coupling. Given that ViewModel is often described as an intermediary between the View and the Model, is there more to the ViewModel than a facade to domain objects? I hope I used the term "facade" correctly here.

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  • Windows server response time very high

    - by Nagaraju Bandla
    Server Specs Windows Server 2008 R2 64 bit Provider : Fasthosts .Net Framework: 4.0 6 GB RAM (its using 4.6 GB) i have a website with thousands of pages structured like folderone/1/one to 500.aspx folderone/2/one to 500.aspx . . folderone/500/one to 500.aspx To load this pages for the first time after the release, for each folder it takes about 20 to 30 minutes and once one page is loaded the rest of the pages loads fine. This happens for all folders. And this repeats every time i restart the server, when a added anything to app_code or if i change the web.config. My site is mainly works Google and due to this problem its giving errors. Any help will be highly appreciated please. i am happy to buy a beer for you if its resolved. Thanks in advance...

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  • What web platform is right for me?

    - by egervari
    I've been looking at web frameworks like Rails, Grails, etc. I'm used to doing applications in Spring Framework with Hibernate... and I want something more productive. One of the things I realized is that while some of the things in Grails is sexy, there are some serious problems with it. Grails' controllers: 1) are implemented awfully. They don't seem to be able to extend from super classes at runtime. I tried this to add base actions and helper methods, and this seems to cause grails to blow up. 2) are based on an obsolete request parameters model (rather than form backing objects, which are much nicer). 3) are hard to test. Command objects are treated totally differently... and it's actually MUCH harder to write the test than it is to write the controller code. 4) Command objects operate totally differently. They are pre-validated and bound, which causes a lot of inconsistencies than basic parameter model. 5) Command objects are not reusable, and it's a pain in the rear to reuse most of the stuff from the domain classes, like constraints and fields. This is TRIVIAL to do in basic Spring. Why the hell was it not trivial to do in Grails? 6) The scaffolding that is generated is pure crap. It doesn't generalize inserts and updates... and it actually copy/pastes a pile of code in two views: create.gsp and edit.gsp. The views themselves are gargantuan piles of doggie do-do. This is further compounded by the fact that it uses low-level parameters and not objects. Integration tests are 30x slower than a Spring integration test. It is disgusting. Some mocking tests are so hard to write and aren't guaranteed to work when it's deployed, that I think it discourages fast, tdd test cycles. Most things seem to screw up grails while it's running, like adding a taglib, or anything really. The server restart problem wasn't solved at all. I'm starting to think going with Spring/Hibernate/Java is the only way to go. While there is a pretty big cost at startup, I know it'll eventually smooth out. It sucks I can't use a language like Scala... because idiomatically, it is so incompatible with Hibernate. This app is also not a run-of-the-mill UI over a database. It's got some of that, but it's not going to be a slouch. I am deathly scared of Grails now because of how crap it is in the Controller layer. Suggestions on what I can do?

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  • error in fetching url data

    - by Rahul s
    from google.appengine.ext import webapp from google.appengine.ext.webapp import util from google.appengine.ext import db from google.appengine.api import urlfetch class TrakHtml(db.Model): hawb = db.StringProperty(required=False) htmlData = db.TextProperty() class MainHandler(webapp.RequestHandler): def get(self): Traks = list() Traks.append('93332134') #Traks.append('91779831') #Traks.append('92782244') #Traks.append('38476214') for st in Traks : trak = TrakHtml() trak.hawb = st url = 'http://etracking.cevalogistics.com/eTrackResultsMulti.aspx?sv='+st result = urlfetch.fetch(url) self.response.out.write(result.read()) trak.htmlData = result.read() trak.put() result.read() is not giving whole file , it giving some portion. trak.htmlData is a textproparty() so it have to store whole file and i want that only

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  • saving nested attributes

    - by Victor Martins
    I have a form that has a nested form like this: <%- for subscription in @task.subscriptions -% <%- semantic_fields_for "task[subscription_attributes][]", subscription do |subscription_form|% <%- subscription_form.inputs do -% <%= subscription_form.input :workhours, :label = subscription.user.full_name% <%- end -% <%- end -% <%- end -% And on the task model I have: accepts_nested_attributes_for :subscriptions attr_accessible :mission_id, :statuscode_id, :name, :objectives, :start_at , :end_at, :hours, :testimony ,:subscriptions_attributes In the form (view) I get the correct values on the workhours fields. But when I change the values and hit the submit button, the values are never changed. I can't figure out why...

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  • MVC 4 Tutorial Error

    - by yiati
    I am currently following along with http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/accessing-your-model's-data-from-a-controller to get a grasp of MVC 4. I am trying to add the MoviesController, but whenever I do I receive an error that says... "Unable to retrieve metadata for 'MvcMovie.Models.Movie' unrecognized configuration section entityFramework (C:\Users\User\AppData\Local\Temp\tmp4FFB.tmp line 76)" The last thing I did before this was change the Web.config file from the end of the previous page in the tutorial.

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  • multiple servers porting to each other

    - by JackLeo
    hello, here is the details: theres is who "servers": VPS with ubuntu 10.10x32 and home pc, win7 on win7 apatche2.2 is running with webpage on VPS game server is running DNS forwards www subdomain to PC, and everything else to VPS (all via ip) I can not configure DNS directly, my providers do Wanted result: DNS forwards everything to VPS, VPS redirects *:80 to PC when viewing page stored in PC domain is shown normaly Questions: How to achieve that using as minimal resources as possible? Is it possible just tel my DNS provider to fix it that :80 port is in different ip? P.S. its for my friend, i do have some apatche and VDS configuration exp. More of a programmer i am. so trow everything you can ;)

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  • odd validation error messages with authlogic

    - by peter
    i have an issue where when validation fails, i get messages like "{{count}} errors prohibited this {{model}} from being saved" and "{{attribute}} {{message}}". it looks like something isn't getting expanded correctly. i've tried adding validates_* stuff but it doesn't seem to help. i've also tried to search the web for an answer but when i add the '{{' and '}}' i get no results. what am i missing? how can i fix this? thanks, -peter

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  • Selected Index Changed event not firing both Autopostback property

    - by TechGuy
    In my Dropdownlist Selected index change event not firing.Here i use auto post back true & View state also true.But Selected Index Changed Event not firing My Code <%@ Page Language="C#" AutoEventWireup="true" CodeFile="AdminEagleViewLogin.aspx.cs" Inherits="AdminEagleViewLogin" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <style> body{padding-top:20px;} </style> <title></title> </head> <body> <form id="form1" runat="server"> <div class="container"> <div class="row"> User : <asp:DropDownList ID="drpusr" runat="server" Visible="true" OnSelectedIndexChanged="drpusr_SelectedIndexChanged" AutoPostBack="true" EnableViewState="true" ></asp:DropDownList> Password: <asp:Label ID="lbluserpw" runat="server"></asp:Label> <div class="col-md-4 col-md-offset-4"> <div class="panel panel-default"> <div class="panel-heading"> <h3 class="panel-title">Please sign in</h3> </div> <div class="panel-body"> <form accept-charset="UTF-8" role="form"> <fieldset> <div class="form-group"> <asp:TextBox ID="txtusr" runat="server"></asp:TextBox> </div> <div class="form-group"> <asp:TextBox ID="txtpw" runat="server" TextMode="Password"></asp:TextBox> </div> <div class="checkbox"> <label> <input name="remember" type="checkbox" value="Remember Me"> Remember Me </label> </div> <asp:CheckBox ID="chkremember" runat="server" Visible="false" class="remchkbox" /> <asp:Button ID="submit" runat="server" class="btn btn-lg btn-success btn-block" Text="Submit" OnClick="submit_Click" /> </fieldset> </form> </div> </div> </div> </div> </div> </form> </body> </html> ServerSide User bind to Dropdown is working. public partial class AdminEagleViewLogin : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { BindUsers(); //lbluserpw.Text = Membership.Provider.GetPassword(drpusr.SelectedValue, String.Empty); } protected void submit_Click(object sender, EventArgs e) { if (Membership.ValidateUser(txtusr.Text, txtpw.Text)) { FormsAuthentication.SetAuthCookie(txtusr.Text, chkremember.Checked); string[] CurrentUserRole = Roles.GetRolesForUser(txtusr.Text); var admin = "Administrator"; var manager = "Manager"; var user = "User"; if (CurrentUserRole.Contains(admin)) { Response.Redirect("Administrator.aspx"); } else if (CurrentUserRole.Contains(manager)) { Response.Redirect("Manager.aspx"); } else { Response.Redirect("UserPage.aspx"); } } else { Response.Redirect("AdminEagleViewLogin.aspx"); } } protected void BindUsers() { DataAccess da = new DataAccess(); drpusr.DataSource = da.GetUsers(); drpusr.DataTextField = "UserName"; drpusr.DataValueField = "UserId"; drpusr.DataBind(); drpusr.Items.Insert(0, new ListItem("-- Select User --", "0")); drpusr.Items.RemoveAt(1); } protected void drpusr_SelectedIndexChanged(object sender, EventArgs e) { lbluserpw.Text = Membership.Provider.GetPassword(drpusr.SelectedValue, String.Empty); } }

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  • Why is C++ backward compatible with C ? Why isn't there some "pure" C++ language ?

    - by gokoon
    C and C++ are different languages, blababla we know that. But if those language are different, why is it still possible to use function like malloc or free ? I'm sure there are all sort of dusty things C++ has because of C, but since C++ is another language, why not remove those things to make it a little less bloat and more clean and clear ? Is it because it allows programmers to work without the OO model or because some compilers doesn't support high-level abstract features of C++ ?

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  • How to enable systemd instantiated service with puppet?

    - by Richard Pena
    I've got the following puppet service: service { "[email protected]": provider => systemd, ensure => running, enable => true, } When I try to apply this configuration on my client, it throws the following error: err: /Stage[main]//Node[puppetclient]/Service[[email protected]]/enable: change from false to true failed: Could not enable [email protected]: The service is running fine and I can make sure it's started on system boot by adding a symlink to getty.target.wants: ln -s /lib/systemd/system/[email protected] /etc/systemd/system/getty.target.wants/[email protected] Of source, I could go ahead and remove "enable = true" from the service definition and include a the symlink manually in the puppet configuration, but shouldn't puppet take care of this? Am I doing something terribly wrong?

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  • Wireless WAN (WWAN) on a Lenovo T500 - built-in or do I need a WWAN modem?

    - by Justin Grant
    I use a Lenovo ThinkPad 2055-3AU at work and I want to get a Wireless WAN data plan with a local mobile telecom provider. I've read conflicting reports online about whether my system is "WWAN-ready" or not. How can I find out which wireless WAN providers (if any) my system can support without buying a separate modem? I looked through Device Manager for anything resembling a WWAN device and didn't see anything, but I also wiped the machine when I bought it and clean-installed Windows 7 with only out-of-the-box Windows and Windows-Update drivers, so it's possible that the device is there but the drivers aren't installed. FWIW, the support page at http://www-307.ibm.com/pc/support/site.wss/quickPath.do?quickPathEntry=20553AU does not specfically list anything about Wireless WAN.

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  • UML tool similar to USE

    - by llazzaro
    Hello, To "simulate" instances from class diagrams I am using USE But I find very frustating to create instances. I am looking for similar tools like this one. I really like USE, but GUI is painfull. I think, that USE is pretty cool to learn how the model "works". Do you know similar tools like this one?

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  • Any PHP MVC framework planning to use 5.3 features?

    - by alexandrul
    I would like to get started with PHP, and 5.3 release seems to bring many nice features (namespaces, lambda functions, and many others). I have found some MVC frameworks, and some of them support only PHP 5: PHP Frameworks PHP MVC Frameworks Model–view–controller on Wikipedia but can anyone recommend one of those MVC frameworks that plans to actively use PHP 5.3 features, not just being compatible with PHP 5.3? Update Results so far: Zend Framework 2.0 (in development) Lithium (in development, based on CakePHP) Symfony (in development) FLOW3 (in development, alpha)

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  • Validate number of nested attributes

    - by Damien MATHIEU
    Hello, I have a model with nested attributes : class Foo < ActiveRecord::Base has_many :bar accepts_nested_attributes_for :bar end It works fine. However I'd want to be sure that for every Foo, I have at least two Bar. I can't access the bar_attributes in my validations so it seems I can't validate it. Is there any clean way to do so ?

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  • How can I upload and parse a vcard using ruby on rails?

    - by Angela
    I would like to be able to upload a vcard and have it parsed into my application's Model. I am thinking that Paperclip would be a way to upload, but I have no idea how to do the parse. I did a search on google, the only library that seems related is vpim, with mixed commentary. Wanted to see what brilliant ideas might be out there to solve this...thanks.

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  • Citrix Mixed Server Session problems

    - by oldskool
    Hello, we've run an Citrix Farm with 4 x Windows 2008 x64 (XenApp 5.0 FP3) and one server Win 2003 x86 (Xenapp 4.6). Yesterday we had a strange problem with Session logins. Existing Sessions could work without problems but new logins were not possible. In the AMC we could not see the Sessions on the Servers. After an reboot all worked fine again. We run the 32 Bit Server since 3 days in our farm (for one Application). Could it be possible that this behavior is caused of the mixed farm? -- (we got in this time a lot of wmi warnings that the Provider CitrixEvemtProv has been registered but it does not correctly impersonate user requests.

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  • Entity Framework .. partial constructor

    - by adamjellyit
    Hi .. I intend to extend the constructors of some of the entities in my Entity Framework (4). However how do I ensure that my constructor is run after the model has run its. i.e. I want to ensure that the the object holds the data from the database before I work on it in my constructor.

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  • How to map LINQ EntitySet to List property in property setter?

    - by jlp
    In my model I have these entities: public interface IOrder { string Name {get;set;} List<IProduct> OrderedProducts {get;set;} } public interface IProduct {} In partial class generated by linq-to-sql I map these properties on my entity properties: public partial class Order : IOrder { List<IProduct> OrderedProducts { get { return this.L2SQLProducts.Cast<IProduct>.ToList(); } set { this.L2SQLProducts = ??? } } } How should setter look like?

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  • how to bind association in RoR

    - by ashok
    I have two tables, AppTemplate and AppTemplateMeta AppTemplate table has column id, MetaID, name etc. I have associated these two model like this class AppTemplate < ActiveRecord::Base set_table_name 'AppTemplate' belongs_to :app_template_meta, :class_name => "AppTemplateMeta", :foreign_key => 'MetaID' end If we fetch data using AppTemplate.all, I want associated meta details also. But currently it's not returning associated meta details. It just returns AppTemplate details. any guys can help me for this

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