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• How to pass get-parameter to backing bean in jsf?

  - by Roman

  I have get parameter with name controller. When I try to pass it (with propertyChangeListener) to my backing bean I get null instead of the real value of the parameter: <h:commandButton value="#{msg['mail.send']}" styleClass="mailbutton" action="#{mailSender.sendMail}"> <f:setPropertyActionListener target="#{mailSender.controllerName}" value="{#param.controller}"/> </h:commandButton> So, I have two questions: What is the proper way to set bean property with a get-parameter value? Actually, I've already get the value from ExternalContext#getRequestParam but maybe there are some other solutions. More interesting question: why propertyActionListener didn't work here? What does it do actually? (again I have some thoughts about it but it would be nice to read more comprehensive explanations).

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• ff extension. how to pass parameters to a function in the oncommand attribute in menu

  - by encryptor

  I have a ff extension which creates a popup and shows dynamic data in it. basically when the popup opens a js function is run which then constructs the popup list by appending the items like this var myMenuPopup = document.getElementById("file-popup4"); newItem = document.createElement("menuitem"); newItem.setAttribute("label", namelist[m]); newItem.setAttribute("id", "item" + m); Now I need to have the click functionality too on these newly added menuitems. putting the atttribute and forming the function is easy. I can have a function to be run when they are clicked. But i need to pass namelist[i] to the function and it will act according to the namelist parameter.If i do: newItem.setAttribute("oncommand" , finalclick(namelist[m])); it runs the function everytime the popup opens runs the function without even clicking on it on the other hand if i use quotes i.i if i do newItem.setAttribute("oncommand" , "finalclick(namelist[m])"); it doesnot open even on clicking giving error : namelist is not defined.

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• Can I pass an argument to a VBScript (vbs file launched with cscript)?

  - by Peter

  I have this script saved in "test.vbs": Set FSO = CreateObject("Scripting.FileSystemObject") Set File = FSO.OpenTextFile(workFolder &"\test.txt", 2, True) File.Write "testing" File.Close Set File = Nothing Set FSO = Nothing Set workFolder = Nothing When I run the script I want to pass the value of the "workFolder" variable. How can I do this? Can I do it? Something like "cscript test.vbs workFolder:'C:\temp\'" perhaps? Bonus question: Is it neccessary to clean up the passed variable with "Set workFolder = Nothing" or does VBSCript do that automatically when it terminates? Maybe "Set File = Nothing" and "Set FSO = Nothing" is unneccessary also? Please let me know if you know the answer to both these questions.

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• Ruby - Possible to pass a block as a param as an actual block to another function?

  - by Markus O'Reilly

  This is what I'm trying to do: def call_block(in_class = "String", &block) instance = eval("#{in_class}.new") puts "instance class: #{instance.class}" instance.instance_eval{ block.call } end # --- TEST EXAMPLE --- # This outputs "class: String" every time "sdlkfj".instance_eval { puts "class: #{self.class}" } # This will only output "class: Object" every time # I'm trying to get this to output "class: String" though call_block("String") { puts "class: #{self.class}" } On the line where it says "instance.instance_eval{ block.call }", I'm trying to find another way to make the new instance variable run instance eval on the block. The only way I can think of to get it to do that is to pass instance_eval the original block, not as a variable or anything, but as a real block like in the test example. Any tips?

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• How to avoid injecting dependencies into an object so that it can pass them on?

  - by Pheter

  I am interested in applying dependency injection to my current project, which makes use of the MVC pattern. My controllers will call the models and therefore will need to inject the dependencies into the models. To do this, the controller must have the dependencies (such as a database object) in the first place. The controller doesn't need to make use of some of these dependencies (such as the database object), so I feel that it shouldn't be given this dependency. However, it has to have these dependencies if it is to inject them into the model objects. How can I avoid having dependencies injected into an object just so that it can pass them on? Doing so feels wrong and can result in many dependencies being injected into an object. Edit: I am using PHP.

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• How can I pass a mouse click to a parent control?

  - by grimus

  In a Silverlight 2 app, I am using Rectangles on a Canvas to draw a representation of data. I would like to have mouse clicks on the Rectangles be passed on to the control that owns the Canvas. I would also like to be able to show a tooltip with a summary of the data when the mouse is over a Rectangle. So far I've only been able to achieve one item or the other. If I make the Rectangles have their IsHitTestVisible property = false, the tooltips don't work, but the owning control will receive the mouse clicks. If I set it to true, then tooltips do work, but the clicks don't get passed on. Is there a way to have a Silverlight item be IsHitTestvisible = true, and pass on the mouse clicks?

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• Pass potentially infinite number of arguments to array except a single numeric variable in a PHP com

  - by tehalive

  I'm trying to make a PHP script that will take a potentially infinite number of URLs from the command line as arguments. I also need to pass an argument that only has a single numeric value possible (to specify timeout), e.g.: ./urltest.php 60 url1.com url2.com url3.com I'm not exactly sure how to specify argv[1] to be a single numeric variable while at the same time the rest of the arguments (i.e. the list of urls) go into an array. Maybe something like: $timeout = $argv[1]; $args = func_get_args(); function numfilter($num) { return !is_numeric($num); } $urls = array_filters($args, 'numfilter'); ? Thanks in advance!

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• Easiest way to pass a javascript array or its values to a servlet and convert to a HashMap

  - by Ankur

  I have a Javascript array. I want to pass it's data to a servlet using the ajax() method of jQuery. What is the easiest way to do this. The index values i.e. the i in array[i] are not in order, they are numbers that have meaning themselves, hence I cannot simply loop through and create a GET queryString, or so I believe. Maybe I should be converting the JavaScript array to a JSON Object and sending that to the server ?? I am stumped on this one.

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• How could I pass the type using Variables to the generic method???

  - by Sam Zhou

  Hi All, I have a generic method in c#: public IList<T> getList<T>(); When I call it as the way below? ... Type T1=metadata.ModelType; getList<T1>(); ... I got error in compiling. How could I do for it? I really need to pass the type as Variables to the generic method!

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• How can I pass a raw System.Drawing.Image to an .ashx?

  - by Mike C

  I am developing an application that stores images as Base64 strings in xml files. I also want to allow the user to crop the image before saving it to the file, preferably all in memory without having to save a temp file, and then delete it afterwards. In order to display the newly uploaded image, I need to create a HTTP handler that I can bind the asp:Image to. The only examples for doing this online require passing the .ashx an ID and then pulling the image from a DB or other data store. Is it possible to somehow pass the raw data to the .ashx in order to get back the image? Thanks, Mike

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• How do I pass a reference type to Control.Invoke / display a form centered on the main form

  - by Rubio

  I'm on a thread other than the UI thread and need to display a modal form that's centered on the application's main form. What I usually do is use the width and height of the main form and the modal form to calculate the location, then use the PointToScreen method of the main form to get the location of the modal form. Since I'm on another thread I need to use Control.Invoke to call this method. I just can't figure out how to pass a parameter of type Point to Control.Invoke (params object[]). Value types and String works fine. Or, if someone can find a better way to display a form centered on the main form regardless of thread, that would be great. MessageBox seems to be able to do this (although not modally).

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• How do you pass or share variables between django views?

  - by Hugh

  Hi, I'm kind of lost as to how to do this: I have some chained select boxes, with one select box per view. Each choice should be saved so that a query is built up. At the end, the query should be run. But how do you share state in django? I can pass from view to template, but not template to view and not view to view. Or I'm truly not sure how to do this. Please help!

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• ClickOnce: How do I pass a querystring value to my app *through the installer*?

  - by Timothy Khouri

  My company currently builds separate MSI's for all of our clients, even though the app is 100% the same across the board (with a single exception, an ID in the app.config). I would like to show them that we can publish in once place with ClickOnce, and simply add a query string parameter for each client's installer. Example: http://mysite.com/setup.exe?ID=1234-56-7890 The issue that I'm having is that the above ("ID=1234...") is not being passed along to the "myapplication.application". What is happening instead is, the app is being installed successfully, and it is running the first time with an activation context, but the "ActivationUri" does not contain any query string values. Is there a way to pass query string values FROM THE INSTALLER URL to the application's launch URL? If so, how?

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• Easiest way to pass a javascript array or its values to a servlet using jQuery's ajax() function

  - by Ankur

  I have a Javascript array. I want to pass it's data to a servlet using the ajax() method of jQuery. What is the easiest way to do this. The index values i.e. the i in array[i] are not in order, they are numbers that have meaning themselves, hence I cannot simply loop through and create a GET queryString, or so I believe. Maybe I should be converting the JavaScript array to a JSON Object and sending that to the server ?? I am stumped on this one.

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• Command Pattern : How to pass parameters to a command ?

  - by Romain Verdier

  My question is related to the command pattern, where we have the following abstraction (C# code) : public interface ICommand { Execute(); } Let's take a simple concrete command, which aims to delete an entity from our application. A Person instance, for example. I'll have a DeletePersonCommand, which implements ICommand. This command needs the Person to delete as a parameter, in order to delete it when Execute method is called. What is the best way to manage parametrized commands ? How to pass parameters to commands, before executing them ?

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• How do I pass custom variables to javascript events?

  - by RoboShop

  I have a user control with a javascript function which references some controls within the user control. This user control works perfectly when there is only one instance of it, but I'm now building a page where I have two instances of the user control. In IE7, it works fine, but in FireFox, it is getting confused that there is two functions of the exact same name and signature. So on UserControl1, it'll be running the function in UserControl2 and modifying that content. I'm thinking my best solution would be to pass the clientID of the components I need TO the function instead of just directly referencing it in the function. How would I do that? The signature of the javascript function is like this function nodeClicking(sender, args) and I'm calling it in an event like this <telerik:RadTreeView runat="server" ID="OrgUnitTreeView" OnInit="TreeViewLoad" OnClientNodeClicking="**nodeClicking**" EnableViewState="true" DataTextField = "OrganisationUnitName" DataValueField = "OrganisationUnitCode" DataFieldParentID = "ParentOrganisationUnitCode" DataFieldID = "OrganisationUnitCode"> How do I add extra variables to the function signature.

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• How to create a closure and pass in variable length argument list?

  - by Jian Lin

  We can create a closure p by capturing the arguments in the scope in the following code: var p = function() { }; if (typeof(console) != 'undefined' && console.log) { p = function() { console.log(arguments); }; } but the arguments are passed like an array to console.log, instead of passed one by one as in console.log(arguments[0], arguments[1], arguments[2], ... Is there a way to expand the arguments and pass to console.log like the way above? Note that p = console.log; works well in Firefox and IE 8 but not on Chrome.

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• How do I chain forms in Access? (pass values between them)

  - by jeff porter

  Hello, I'm using Access 2007 and have a data model like this... Passenger - Bookings - Destinations So 1 Passenger can have Many Bookings, each for 1 Destinations. My problem... I can create a form to allow the entry of Passenger details, but I then want to add a NEXT button to take me to a form to enter the details of the Booking (i.e. just a simple drop list of the Destinations). I've added the NEXT button and it has the events of RunCommand SaveRecord OpenForm Destination_form BUT, I cant work out how to pass accross to the new form the primary key of the passenger that was just entered (PassengerID). I'd really like to have just one form, and that allow the entry of the Passenger details and the selection of a Destination, that then creates the entries in the 2 Tables (Passenger & Bookings), but I can't get that to work either. Can anyone help me out please? Thanks Jeff Porter

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• How to easily pass a very long string to a worker process under Windows?

  - by sharptooth

  My native C++ Win32 program spawns a worker process and needs to pass a huge configuration string to it. Currently it just passes the string as a command line to CreateProcess(). The problem is the string is getting longer and now it doesn't fit into the 32K characters limitation imposed by Windows. Of course I could do something like complicating the worker process start - I use the RPC server in it anyway and I could introduce an RPC request for passing the configuration string, but this will require a lot of changes and make the solution not so reliable. Saving the data into a file for passing is also not very elegant - the file could be left on the filesystem and become garbage. What other simple ways are there for passing long strings to a worker process started by my program on Windows?

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• How to pass an event to a method and then subscribe to it?

  - by Ryan Peschel

  Event Handler public void DeliverEvent(object sender, EventArgs e) { } #1: This Works public void StartListening(Button source) { source.Click += DeliverEvent; } #2: And so does this.. public void StartListening(EventHandler eventHandler) { eventHandler += DeliverEvent; } But in #2, you cannot call the method because if you try something like this: StartListening(button.Click); You get this error: The event 'System.Windows.Forms.Control.Click' can only appear on the left hand side of += or -= Is there any way around that error? I want to be able to pass the event and not the object housing the event to the StartListening method.

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• How to pass msbuild properties to another msbuild script correctly?

  - by mark

  Dear ladies and sirs. I have a master.proj msbuild script which builds several projects using the MSBuild task. Here is a typical example: <Target Name="Log4PostSharp" DependsOnTargets="log4net"> <MSBuild Projects="Log4PostSharp\Log4PostSharp.sln" Properties="Configuration=$(Configuration)" /> </Target> But, my problem is that if more properties are given on the command line, they are not passed to the MSBuild task. Is there a way to pass the MSBuild task all the properties given on the command line? Thanks.

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• Is it OK to pass SQLCommand as a parameter?

  - by TooFat

  I have a Business Layer that passes a Conn string and a SQLCommand to a Data Layer like so public void PopulateLocalData() { System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(); cmd.CommandType = System.Data.CommandType.StoredProcedure; cmd.CommandText = "usp_PopulateServiceSurveyLocal"; DataLayer.DataProvider.ExecSQL(ConnString, cmd); } The DataLayer then just executes the sql like so public static int ExecSQL(string sqlConnString, System.Data.SqlClient.SqlCommand cmd) { int rowsAffected; using (SqlConnection conn = new SqlConnection(sqlConnString)) { conn.Open(); cmd.Connection = conn; rowsAffected = cmd.ExecuteNonQuery(); cmd.Dispose(); } return rowsAffected; } Is it OK for me to pass the SQLCommand as a parameter like this or is there a better more accepted way of doing it. One of my concerns is if an error occurs when executing the query the cmd.dispose line will never execute. Does that mean it will continue to use up memory that will never be released?

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• How do I pass a parameter from the select list into a function for joining a linq query?

  - by Ryan ONeill

  I have a query that can be summarised in SQL as follows; Select S.StockCode From StockToCheck As S Inner Join GetPOSStock(S.StockCode) As C On S.StockCode = C.StockCode; I'm trying to do the same in Linq but it seems I cannot pass a parameter to the function I am joining on as it has not been parsed by Linq. I imagine it would look like this (vb); Dim x = From S In StockToCheck Join C In GetPOSStock(S) On S Equals C.ProductCode Where the S var is a list of strings. This gives the error 'S' is not declared and points to the S in the function call / join (GetPOSStock). So it does not seem possible to do this in Linq, can anyone confirm? Thanks in advance Ryan

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• What is the safest way to pass strings around in C?

  - by chucknelson

  I have a program in C using Solaris with VERY ancient compatibility it seems. Many examples, even here on SO, don't work, as well as lots of code I've written on Mac OS X. So when using very strict C, what is the safest way to pass strings? I'm currently using char pointers all over the place, due to what I thought was simplicity. So I have functions that return char*, I'm passing char* to them, etc. I'm already seeing strange behavior, like a char* I passed having its value right when I enter a function, and then the value being mysteriously gone OR corrupted/overwritten after something simple like one printf() or an malloc to some other pointer. I was thinking maybe declaring a local char[] inside each function, using strcpy() immediately, and then eventually returning a pointer where char *returnval = strdup(localchar[]); This seems...sloppy. Can anyone point me in the right direction on a simple requirement?

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• In datastore, confused on how to pass a list of key_names as an argument to somemodel.get_or_insert(

  - by indiehacker

  Are there examples of how to pass a list of key_names to Model.get_or_insert() ? My Problem: With a method of ParentLayer I want to make the children. The key_names of the new (or editable) entities of class Child will come from such a list below: namesList = ["picture1","picture2"] so I should be able to build a list of key_names with method from the parent class as follows: class ParentLayer(db.Model): def getOrMakeChildren(self, namesList): keyslist = [ db.Key.from_path( 'Child' , name , parent = self.key() ) for name in namesList ] the problem is next where I simply want to get_or_insert entities based on keylist defined above: childrenEntitiesList = Child.get_or_insert(keyslist) # no works? also none of the below attempts worked: #childrenEntitiesList = Child.get_or_insert(keyslist, parent = u'TEST') #childrenEntitiesList = Child.get_or_insert(keyslist, parent=self.key().name() ) #childrenEntitiesList = Child.get_or_insert(keyslist, parent=self.key()

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