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• Resources for Prformance testing

  - by munna

  Our small concern is entrusted with creating an Application on ASP.NET with client-server model. As we are almost done with the development we are creating a small team for Performance test. I have googled in the net about the topic but without much help. If anyone of you can share 'How, What and Why' about perf test, it would be great help.

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• Django ModelAdmin.save_model() -vs- ModelAdmin.save_formset()

  - by anonymous coward

  I want to ensure that a user editing a particular model is saved in that models updated_by (FK User) field. I'm using mostly ModelForms (not necessarily the built in Admin), and wondering: In what cases would I need to override ModelAdmin.save_model() or ModelAdmin.save_formset()? Or, is that doing it wrong? If it's just the models' save() method that needs to be overridden, is there a proper way to access the request object there?

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• has_many :through name suggestions

  - by user1084769

  I have three models, user, achievement, badge and I plan on using has_many :through instead of has_many_and_belongs_to since I will have a few extra fields in the join tables. According to a Railscast I watched, using this method requires coming up with new model names and not user_badge or user_achievement. For my User Achievement join what do you think of Accomplishment? For my User Badge join what do you think of Distinction?

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• removing items from a generic List<t>

  - by frosty

  I have the following method, I wish to remove items from my collection that match the product Id. Seems fairly straight forward, but i get an exception. Basically my collection is getting out of sync. So what is the best way to remove an item from a collection. public void RemoveOrderItem(Model.Order currentOrder, int productId) { foreach (var orderItem in currentOrder.OrderItems) { if (orderItem.Product.Id == productId) { currentOrder.OrderItems.Remove(orderItem); } } } Exception Details: System.InvalidOperationException: Collection was modified; enumeration operation may not execute

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• Pitfalls when converting C++/CLI to C++

  - by directedition

  I have a library written in C++/CLI and I want to open it up. I want it to be as cross-platform as possible and be able to write bindings to it for other languages to use (Java, Python, etc, etc). To do this, the library needs to be in plain C++ for maximum flexibility. I figure that the logical structures are already there, I just need to replace the .NET libraries it uses with the standard C++ ones. Is this a misguided notion? What should I watch out for when making this transition?

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• Copy information only, from an external webpage and import it into a form using PHP

  - by mpw5013

  I'm looking to extract key pieces of information from the following website to simplify the signup process. More or less I want to build a quick import script that will grab the following: 1) Username 2) Type (Model / Photographer) 3) Age 4) Sex 5) City, State, Zip 6) Email 7) Photos I will then take all of this data and add it to join form / push the photos through a manipulation script. Any ideas?

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• Codeigniter: user defined helper function does not load.

  - by cbrandolino

  Hi everybody. I made a custom helper extending the system string_helper.php. I placed it in my /application/helpers folder, called MY_string_helper.php as required, unit-tested its functions. Now, when I try to call one of its functions from a model, it does not work. The functions in the default string helper work, instead. It looks like my extension is not loaded for some reasons. Thanks a lot, and happy holidays.

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• rais belong_to which class to choose

  - by Small Wolf

  There is a model relation like this. class A belongs_to :ref_config,:class_name => 'User' end My question is : the A has a attribute named flag, now i want to create a function like this: if flag == 1, I want the class A like this belongs_to :ref_config,:class_name => 'Department and if flag == 2, i want the class A like this belongs_to :ref_config,:class_name => 'User' How can I implement the function Thank you!

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• how to save related models with non-null foreign key

  - by Fortress

  I have a model called user which has_one email. I put the foreign key (NOT NULL) inside users table. Now I'm trying to save it in the following way: @email = Email.new(params[:email]) @email.user = User.new(params[:user]) @email.save This raises a db exception, because the foreign key constraint is not met (NULL is inserted into email_id). How can I elegantly solve this or is my data modeling wrong?

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• Rails: Pass association object to the View

  - by Fedyashev Nikita

  Model Item belongs_to User. In my controller I have code like this: @items = Item.find(:all) I need to have a corresponding User models for each item in my View templates. it works in controller(but not in View template): @items.each { |item| item.user } But manual looping just to build associations for View template kinda smells. How can I do this not in a creepy way?

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• C# Spawn Multiple Threads for work then wait until all finished

  - by pharoc

  just want some advice on "best practice" regarding multi-threading tasks. as an example, we have a C# application that upon startup reads data from various "type" table in our database and stores the information in a collection which we pass around the application. this prevents us from hitting the database each time this information is required. at the moment the application is reading data from 10 tables synchronously. i would really like to have the application read from each table in a different thread all running in parallel. the application would wait for all the threads to complete before continuing with the startup of the application. i have looked into BackGroundWorker but just want some advice on accomplishing the above. Does the method sound logical in order to speed up the startup time of our application How can we best handle all the threads keeping in mind that each thread's work is independent of one another, we just need to wait for all the threads to complete before continuing. i look forward to some answers

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• Data Mapper implementation in C#

  - by cargo86

  Hi, My Domain Layer is implemented with Domain Model, and after PEAA, in Data Layer I have to use Data Mapper. NHiberbate is an implemantation of Data Mapper in C#? What alternative I have to use Data Mapper in a C# project? Thanks a lot!

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• Disjunction in ActiveRecord

  - by samuil

  Is it possible to use ActiveRecord named_scopes to create one query with sql OR clauses? When I use Model.scope1.scope2 generated query is conjunction of these scopes.

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• How to create a Link that supplies its own Markup?

  - by Aranian

  I'm trying to create a link that will hide or show a part of my page. The link should be reusable and display one of two images, depending on state. Adding the two subcomponents on every page where I use the link is kind of clunky so I wanted to create a component that behaves like a link while automatically adding its content. This is the Link component: public class ToggleVisibilityLink extends AjaxFallbackLink<Boolean> { public ToggleVisibilityLink(final String id, final IModel<Boolean> model) { super(id, model); setOutputMarkupId(true); add(new Image("collapseImage") { @Override public boolean isVisible() { return !getModelObject(); } }); add(new Image("expandImage") { @Override public boolean isVisible() { return getModelObject(); } }); } @Override public void onClick(final AjaxRequestTarget target) { setModelObject(!getModelObject()); if (target != null) { target.add(this); send(this.getParent(), Broadcast.EXACT, target); } } } And this is how I currently use it in HTML (this is added to the page or panel where I use the link): <a href="#" wicket:id="collapseExpandLink" class="collapseExpandLink"> <wicket:link> <img src="collapse.png" wicket:id="collapseImage" class="collapseExpandImage collapse"> </wicket:link> <wicket:link> <img src="expand.png" wicket:id="expandImage" class="collapseExpandImage expand"> </wicket:link> </a> And the corresponding Java call: add(new ToggleVisibilityLink("collapseExpandLink", new PropertyModel(this, "hidden"))); But I want to be able to skip the body inside the link as one would have to know about the internals of ToggleVisibilityLink. I experimented with IMarkupResourceStreamProvider, using Dynamic markup in Wicket as a starting point. By googling I found another example where the poster was only able to get that to work when using a Panel, and I was able to do that as well. But I'd really like to keep the link and not package it inside a Panel, as I would not be able to style the link in the markup. I'm also open to alternatives to encapsulate the link and its body.

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• label to display graphics card or total system ram through registry possibly?

  - by NightsEVil

  hi all i have this great code that i love that will display the kind of processor model and speed like so RegistryKey Rkey = Registry.LocalMachine; Rkey = Rkey.OpenSubKey("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"); Labelproc.Text = (string)Rkey.GetValue("ProcessorNameString"); and i was wondering if theres a way to do this for the kind of graphics card and the total installed system ram (in separate labels)

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• django forms exclude fields on init rather than in the meta class

  - by John

  Hi, I want to exclude certain fields in the init function of a modelform depending on a parameter passed in, how do I do this? I know I can add exclude fields using the meta class of a model form but I need this to be dynamic depending on the variable passed in. Thanks

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• Expire models in Rails

  - by Koning Baard XIV

  I'm creating a simple paste-bin in Ruby on Rails, which will have an expire-feature. With this, people can select a date when the paste will be deleted automatically. How can I implement this? I was thinking of a cronjob, but maybe there is a more platform-independent way, by defining this in the model itself. Can anyone help me? Thanks.

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• How do I sub sample data by group using ddply?

  - by Maiasaura

  I've got a data frame with far too many rows to be able to do a spatial correlogram. Instead, I want to grab 40 rows for each species and run my correlogram on that subset. I wrote a function to subset a data frame as follows: samp <- function(dataf) { dataf[sample(1:dim(dataf)[1], size=40, replace=FALSE),] } Now I want to apply this function to each species in a larger data frame. When I try something like culled_data = ddply (larger_data, .(species), subset, samp) I get this error: Error in subset.data.frame(piece, ...) : 'subset' must evaluate to logical Anyone got ideas on how to do this?

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• Joining two select queries and ordering results

  - by user1

  Basically I'm just unsure as to why this query is failing to execute: (SELECT replies.reply_post, replies.reply_content, replies.reply_date AS d, members.username FROM (replies) AS a INNER JOIN members ON replies.reply_by = members.id) UNION (SELECT posts.post_id, posts.post_title, posts.post_date AS d, members.username FROM (posts) as b WHERE posts.post_set = 0 INNER JOIN members ON posts.post_by = members.id) ORDER BY d DESC LIMIT 5 I'm getting this error: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a INNER JOIN members ON replies.re' at line 2 All I'm trying to do is select the 5 most recent rows (dates) from these two tables. I've tried Join, union etc and I've seen numerous queries where people have put another query after the FROM statement and that just makes no logical sense to me as to how that works? Am I safe to say that you can join the same table from two different but joined queries? Or am I taking completely the wrong approach, because frankly I can't seem see how this query is failing despite reading the error message. (The two queries on there own work fine)

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• How to create XML webparts using sharepoint web services?

  - by Manish

  I have an XML to be rendered in sharepoint using a XSL file. I now the how to do this using object model of sharepoint but don't how to do this using sharepoint web services. i.e. I want to create XML web parts using sharepoint web services. Is it possible to do create XML web parts using sharepoint web services? If yes, how?

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• How to save links in TextFields

  - by xRobot

  I have a simple Blog model with a TextField. What is the best way to save links in the TextField ? 1) Saving link in the database in this form: http://www.example.com and then using some filter in the template to trasform it in form: <a rel="nofollow" href="http://www.example.com>http://www.example.com</a> 2) Saving link in the database directly in this form: <a rel="nofollow" href="http://www.example.com>http://www.example.com</a>

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• how to clear the input value using jquery

  - by rockers

  $("input[id^='exc-flwup-<%=Model.Date%>']").click(function() { $(this).val(''); }); I am using this to clear the input field..when i click on the input box its doign clear but.. on form submit if i ccheck at controler side I am still seeing this value there? do I need to do anyting else here to make null inputbox?

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• OnetoMany and ManytoMany using Grails and JPA on google app engine

  - by adddd

  I googled a lot but i find crap documentation about jpa. I had to implement a domain model like cat and dog inherit from animal, and animal has a one to many and a many to many relation. How to do that?

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• Is there an open source MVP framework for C++?

  - by morpheous

  I am looking for a lightweight set of C++ classes that implement/show how to use the MVP design pattern, so that I can refactor some legacy code I am working on. A library/framework would be nice to get me started. A quick google search seems to bring up only C# examples - is anyone aware of any C++ ones out there? [Edit] I am particularly interested in a Passive viewer, as I want to completely decouple the view from the model.

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• How to implement table-per-concrete-type using entity framework

  - by SDReyes

  Hello Guys! I'm mapping a set of tables that share a common set of fields: So as you can see I'm using a table-per-concrete-type strategy to map the inheritance. But... I have not could to relate them to an abstract type containing these common properties. It's possible to do it using EF? BONUS: The only non documented Entity Data Model Mapping Scenario is Table-per-concrete-type inheritance http://msdn.microsoft.com/en-us/library/cc716779.aspx : P

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