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• Attaching javascript events to form widgets

  - by user334017

  I have a form with a drop down menu and I want to do a javascript action whenever the user changes the selection. I imagine it is possible find the input later, using javascript, and attach an event to to it; but it seems like it would be easier if there was some sort of attribute or option that could be defined in form-configure(): e.g. $this->widgetSchema['menu'] = new sfWidgetFormChoice(array( ... 'onclick' => javascript function )); obviously this doesn't work, and it probably wouldn't be an onclick method either, but my question is how do you attach a javascript event to a input/widget?

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• Clone DB table row through MVC in MSSQL

  - by sslepian

  Is there a simple solution for duplicating table rows in MSSQL as well as all table rows with foreign keys pointing to the cloned table row? I've got a "master" table and a bunch of "child" tables which have a foreign key into the ID of the master table. I need to not only create a perfect copy of the master table, but clone each and every child table referencing the master table. Is there a simpler way to do this than creating a new row in the master table, copying in the information from the row to be cloned, then going through each child table and doing the same with each row pointing to the cloned row in the master table? I'm using a MSSQL 2005 Database accessed through C# ASP.net MVC 1.0.

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• Python 3 - Module: subprocess

  - by Rhys

  Hi Stack Overflow users, I've encountered a frustrating problem, can't find the answer to it. Yesterday I was trying to find a way to HIDE a subprocess.Popen. So for example, if i was opening the cmd. I would like it to be hidden, permanently. I found this code: kwargs = {} if subprocess.mswindows: su = subprocess.STARTUPINFO() su.dwFlags |= subprocess.STARTF_USESHOWWINDOW su.wShowWindow = subprocess.SW_HIDE kwargs['startupinfo'] = su subprocess.Popen("cmd.exe", **kwargs) It worked like a charm! But today, for reasons I don't need to get into, I had to reinstall python 3 (32bit) Now, when I run my program I get this error: Traceback (most recent call last): File "C:\Python31\hello.py", line 7, in <module> su.dwFlags |= subprocess.STARTF_USESHOWWINDOW AttributeError: 'module' object has no attribute 'STARTF_USESHOWWINDOW' I'm using 32bit, python3.1.3 ... just like before. If you have any clues/alternatives PLEASE post, thanks. NOTE: I am looking for a SHORT method to hide the app, not like two pages of code please

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• Is this more suited for key value storage or a tree?

  - by JC

  I'm trying to figure out the best way to represent some data. It basically follows the form Manufacturer.Product.Attribute = Value. Something like: Acme.*.MinimumPrice = 100 Acme.ProductA.MinimumPrice = 50 Acme.ProductB.MinimumPrice = 60 Acme.ProductC.DefaultColor = Blue So the minimum price across all Acme products is 100 except in the case of product A and B. I want to store this data in C# and have some function where GetValue("Acme.ProductC.MinimumPrice") returns 100 but GetValue("Acme.ProductA.MinimumPrice") return 50. I'm not sure how to best represent the data. Is there a clean way to code this in C#?

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• What is the most efficient way to store a mapping "key -> event stream"?

  - by jkff

  Suppose there are ~10,000's of keys, where each key corresponds to a stream of events. I'd like to support the following operations: push(key, timestamp, event) - pushes event to the event queue for key, marked with the given timestamp. It is guaranteed that event timestamps for a particular key are pushed in sorted or almost sorted order. tail(key, timestamp) - get all events for key since the given timestamp. Usually the timestamp requests for a given key are almost monotonically increasing, almost synchronously with pushes for the same key. This stuff has to be persistent (although it is not absolutely necessary to persist pushes immediately and to keep tails with pushes strictly in sync), so I'm going to use some kind of database. What is the optimal kind of database structure for this task? Would it be better to use a relational database, a key-value storage, or something else?

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• ^+Left Arrow and ^+Right Arrow suddenly stopped working on OS X

  - by user293261

  Hello. I'm not really sure what to make of this. The key combination of ^← and ^→ have stopped working for one of the two users on my OS X installation. I use these keys all the time (switching tabs in terminal, IntelliJ primarily), and it's driving me crazy. On one user account, it works fine. On the other, it doesn't. This happened today and nothing significant comes to mind that would have caused some weird keybinding issue. If anyone has heard of or experienced anything like this, I would very much appreciate your advice! Thanks.

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• Is there alternative way to write this query?

  - by Kugel

  I have tables A, B, C, where A represents items which can have zero or more sub-items stored in C. B table only has 2 foreign keys to connect A and C. I have this sql query: select * from A where not exists (select * from B natural join C where B.id = A.id and C.value > 10); Which says: "Give me every item from table A where all sub-items have value less than 10. Is there a way to optimize this? And is there a way to write this not using exists operator?

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• How to set skin at runtime in Flex 4

  - by Ben

  Hi, I have a bunch of custom controls based on a SkinnableContainer. When adding the control at design time, I can specify a skin by using the skinClass attribute on the tag. I need to add some of these elements during runtime, and I can't figure out how to specify the skinClass for my controls. eg. var something:CustomThing = new CustomThing(); /* mistery code here to attach the skin ? */ addElement(something); How do I do this? Thanks!

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• problem with parsing string from excel file

  - by ohana

  hi, i have ruby code to parse data in excel file using Parseexcel gem. I need to save 2 columns in that file into a Hash, here is my code: worksheet.each { |row| if row != nil key = row.at(1).to_s.strip value = row.at(0).to_s.strip if !parts.has_key?(key) and key.length 0 parts[key] = value end end } however it still save duplicate keys into the hash: "020098-10". I checked the excel file at the specified row and found the difference are " 020098-10" and "020098-10". the first one has a leading space while the second doesn't. I dont' understand is it true that .strip function already remove all leading and trailing white space? also when i tried to print out key.length, it gave me these weird number: 020098-10 length 18 020098-10 length 17 which should be 9....

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• Create xml type with no body

  - by Pace

  Hopefully this is an easy question. How can I define an XML type such that the type doesn't have a body. As an example I can define the Foo type as follows... <xs:complexType name="Foo"> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute name="id" type="xs:integer" use="required"/> </xs:extension> </xs:simpleContent> </xs:complexType> But that would allow the following... <Foo id="7">STUFF I DON'T WANT</Foo> Is there a way I can change the xsd so that the Foo element isn't allowed any body?

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• How can I make an expect script prompt for a password?

  - by MiniQuark

  I have an expect script that connects to a few routers through ssh. All these routers have the same password (I know, it's wrong), and the script needs to know that password in order to be able to connect to the routers. Currently, the password is passed to my script as an argument on the command line, but this means that there's a trace of that password in my .bash_history file as well as in the running processes. So instead I would like the user to be prompted for a password, if possible silently. Do you know whether or not it's possible to prompt the user for a password with expect? Thank you. Edit: if I was connecting to servers instead of routers, I would probably use ssh keys instead of passwords. But the routers I'm using just support passwords.

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• How to support both DataContractSerializer and XMLSerializer for the same contract on the same host?

  - by Sly

  In our production environment, our WCF services are serialized with the XMLSerializer. To do so our service interfaces have the [XMLSerializerFormat] attribute. Now, we need to change to DataContractSerializer but we must stay compatible with our existing clients. Therefore, we have to expose each service with both serializers. We have one constraint: we don't want to redefine each contract interface twice, we have 50 services contract interfaces and we don't want to have IIncidentServiceXml IIncidentServiceDCS IEmployeeServiceXml IEmployeeServiceDCS IContractServiceXml IContractServiceDCS How can we do that? This is a description of what we have tried so far but I'm willing to try completely different approaches: We tried to create all the endpoints by code in our own ServiceHostFactory class. Basically we create each endpoint twice. The problem is that at runtime, WCF complains that the service has two endpoints with the same contact name but with different ContractDescription instances. The message says we should use different contract names or reuse the same ContractDescription instance.

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• How can I ensure that a Java object (containing cryptographic material) is zeroized?

  - by Jeremy Powell

  My concern is that cryptographic keys and secrets that are managed by the garbage collector may be copied and moved around in memory without zeroization. As a possible solution, is it enough to: public class Key { private char[] key; // ... protected void finalize() throws Throwable { try { for(int k = 0; k < key.length; k++) { key[k] = '\0'; } } catch (Exception e) { //... } finally { super.finalize(); } } // ... }

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• avoid preselection of a view when focus is gained android

  - by Sephy

  Hi all, I don't know if the title is very clear, but my issue is as follows : I have an activity with a listview, and on top of this listview, i have a searchfield (edittext). The issue is that when i try debugging on a phone, the virtual keyboard gets out straight after the screen displays the activity... And of course, it's hidding half of the list... So, is there an attribute or something I can use to prevent this from happening?(I still want to keybord to appear when i click the edittext though...) thank you

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• How to create "cachedXAuthAccessTokenKey" using XAuthTwitterEngine in Twitter in iphone

  - by Pugal Devan

  Hi, I am working on login page validation for twitter application. I have downloaded the sample code of "XAuthTwitterEngineDemo". Now i have created kOAuthConsumerKey and kOAuthConsumerSecret keys and implemented in my code. But i donno, how to create "cachedXAuthAccessTokenKey". #define kCachedXAuthAccessTokenStringKey @"cachedXAuthAccessTokenKey" Is need to create that key?. If yes, Please guide me to how to create?. If i run that program, i entered the correct user name and pass word into the text fields, it shown the message as Incorrect user name/Pass word. I donno why its happened?. so please guide me. Thanks.

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• Inline javascript performance.

  - by Geromey

  I know it is better coding practice to avoid inline javascript like: <img id="the_image" onclick="do_this(true);return false;"/> I am thinking about switching this kind of stuff for bound jquery click events like: $("#the_image").bind("click",function(){ do_this(true); return false; }); Will I lose any performance if I bind a ton of click events? I am not worried about the time it takes to initially bind the events, but the response times between clicking and it happening. I bet if there is a difference, it is negligible, but I will have a ton of functions bound. I'm wondering if browsers treat the onclick attribute the same way as a bound event. Thanks

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• Lock HTML select element, allow value to be sent on submit

  - by ILMV

  I have a select box (for a customer field) on a complex order form, when the user starts to add lines to the order they should not be allowed to change the customer select box (unless all lines are deleted). My immediate thought was that I could use the disabled attribute, but when the box is disabled the selected value is no longer passed to the target. When the problem arose a while ago one of the other developers worked around this by looping through all the options and disabling all but the selected option, and sure enough the value was passed to the target and we've been using since. But now I'm looking for a proper solution, I don't want to loop through all the options because are data is expanding and it's starting to introduce performance issues. I'd prefer not to enable this / all the elements when the submit button is hit. How can I lock the input, whilst maintaining the selected option and passing that value to the target script? I would prefer a non-JavaScript solution if possible, but if needed we are running jQuery 1.4.2 so that could be used.

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• How to return focus from GridView or DataGrid to other control on the page

  - by Senthilkumar

  I Want to know how to focus to control after completing tab navigation for the grid view. I have certain controls in my page and GridView/DataGrid as last control, when I navigate (Tab key navigation) on my page. I can navigate from first control to GridView but when I finish all editable items in grid the tab control goes to browser address bar. I need this should focus to again first control on the page. My question is how can I do this? If it is an ordinary controls then I can use (on key down) attribute of the same.. here how can I get access to the last row's last column on the grid view.

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• What to store at application Settings, numeric / string representations or objects?

  - by SoMoS

  Hello, I've been thinking for a while on what to store at the Project Settings, objects or numeric/string representations of those objects to set a rule and avoid thinking on this at the future so I want to take the best approach. On one side storing object representations grants you that what is stored is valid and saves you from doing conversions each time you access them. You only need objects with the attribute. At the other side storing the numeric/string representation of an object eases the editing of the setting because at the end the user will be entering numeric or string information. What do you do with this issue?

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• WCFExtras SOAP headers support returns null reference exception

  - by jlp

  I use WCFExtras to add headers to my service. I set up everything according to http://wcfextras.codeplex.com/wikipage?title=HowToUse&referringTitle=Home My WCF client works but throws NullReferenceException on both: client.InnerChannel.SetHeader("myHeader", new local.Header()); and var header = client.InnerChannel.GetHeader<local.Header>("myHeader"); I wonder if web.config element <wsdlExtensions location="noidea" singleFile="True"/> might cause a problem because I don't know what type in location attribute. I simply tried to type service address but it didn't fix anything.

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• php push 2d array into mysql

  - by john

  Hay All, I cant seem to get my head around this dispite the number to examples i read. Basically I have a 2d array and want to insert it into MySQL. The array contains a few strings. I cant get the following to work... $value = addslashes(serialize($temp3));//temp3 is my 2d array, do i need to use keys? (i am not at the moment) $query = "INSERT INTO table sip (id,keyword,data,flags) VALUES(\"$value\")"; mysql_query($query) or die("Failed Query"); Thanks Guys,

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• Possible Performance Considerations using Linq to SQL Repositories

  - by Robert Harvey

  I have an ASP.NET MVC application that uses Linq to SQL repositories for all interactions with the database. To deal with data security, I do trimming to filter data to only those items to which the user has access. This occurs in several places: Data in list views Links in a menu bar A treeview on the left hand side containing links to content Role-based security A special security attribute, inheriting from AuthorizeAttribute, that implements content-based authorization on every controller method. Each of these places instantiates a repository, which opens a Linq to Sql DataContext and accesses the database. So, by my count, each request for a page access opens at least six separate Linq to SQL DataContexts. Should I be concerned about this from a performance perspective, and if so, what can be done to mitigate it?

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• How to Set ActiveX Control name on the install window of Internet Explorer

  - by Gohan

  I created a ActiveX control using ATL, already package it with signature. I want to use it on the webpage, but at the install window the name is MyActiveX.cab with no link. the MyActiveX.cab name can be changed by modifying the html page's tag codebase attribute. but the name is still format like "XXX.cab" with no hyperlink. I find a activex control from chinese website has its own name and link: and its object tags are nothing different: <object ID="CMBPB_OCX" CODEBASE="http://szdl.cmbchina.com/download/PB/pb50.cab#version=5,3,1,1" classid="clsid:F2EB8999-766E-4BF6-AAAD-188D398C0D0B" width="0" height="0"> </object> the pic was taken from MSDN Pages, it has link. Really want to know how to Set the activex control name? I try to get help from How to Set ActiveX Control Name, but still get stuck.

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• Django json serialization problem

  - by codingJoe

  I am having difficulty serializing a django object. The problem is that there are foreign keys. I want the serialization to have data from the referenced object, not just the index. For example, I would like the sponsor data field to say "sponsor.last_name, sponsor.first_name" rather than "13". How can I fix my serialization? json data: {"totalCount":"2","activities":[{"pk": 1, "model": "app.activity", "fields": {"activity_date": "2010-12-20", "description": "my activity", "sponsor": 13, "location": 1, .... model code: class Activity(models.Model): activity_date = models.DateField() description = models.CharField(max_length=200) sponsor = models.ForeignKey(Sponsor) location = models.ForeignKey(Location) class Sponsor(models.Model): last_name = models.CharField(max_length=20) first_name= models.CharField(max_length=20) specialty = models.CharField(max_length=100) class Location(models.Model): location_num = models.IntegerField(primary_key=True) location_name = models.CharField(max_length=100) def activityJSON(request): activities = Activity.objects.all() total = activities.count() activities_json = serializers.serialize("json", activities) data = "{\"totalCount\":\"%s\",\"activities\":%s}" % (total, activities_json) return HttpResponse(data, mimetype="application/json")

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• How can I update the version of an APK which I did not create myself

  - by sylvanaar

  I am new to Android development. I am using a x-platform development tool which builds and signs the APK for me. This tool has a bug and it does not generate APK's with the version number I specify, all APK's generated are version 1.0. I would like to unpack the APK, edit the version number, and then resign and repackage it. It was signed using my keystore originally, so I have the keys needed to sign it again. How can this be done?

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