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• Validate password on change of certain fields in RoR

  - by Micke

  Hello, I am building a RoR app, a community. With a User model and some fields. So when a user is updating a certain field, like His/Hers berthday. Then i want to validate that the User typed in the password that is the same in the Database. So I know that it is the right user trying to change the birthday. So i ask you how i can create shuch a validator. Allso i would like to be able to specify an array of which fields the user has to validate the password to change. Ps. I am using RoR3. If it mathers. Thanks, Micke

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• Validate Linq2Sql before SubmitChanges()

  - by Nick Gotch

  Can anyone tell me if/how you can validate the changes in a data context in Linq2Sql before calling SubmitChanges(). The situation I have is that I create a context, perform multiple operations and add many inserts alongside other processing tasks and then rollback if the submit fails. What I'd prefer to do is make some kind of "Validate()" call after certain tasks are done so that I can handle it before submitting the entire job.

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• Override ModelState.IsValid Property

  - by griegs

  How can I override the IsValid property? I have a model that's validating as false. I have a custom ValidationAttribute on the model and I'd like to set the IsValid flag for the whole model under certain circumstances. Is this possible?

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• VB.Net Validate an xml against a schema (strange problem)

  - by Apeksha

  I have written a small XML validator, that takes in an XML file and an XML schema and validates the XML files against that schema. It works well, except for an XML file, with this content: <?xml version="1.0" encoding="utf-8"?> <xc:program xmlns:xc="http:\\www.something.com\Schema\XC10" xc:version="4.0.22.0" > <xc:namespaceDecls> <xc:namespaceDecl xc:namespaceDeclURI="urn:swift:xsd:abc"> <xc:namespaceDeclPrefix>n</xc:namespaceDeclPrefix> </xc:namespaceDecl> </xc:namespaceDecls> </xc:program> I tried to validate this XML file against a bunch of different schemas. No matter which schema I select, this XML file comes out as valid. What is it that I am missing? Here is the relevant piece of code: 'Create a schema cache and add the given schema to it. Dim schemaCache As New Schema.XmlSchemaSet schemaCache.Add(targetNamespace, schemaFilename) 'Create an XML DOMDocument object. Dim xmlDom As New XmlDocument 'Assign the schema cache to the DOM document. 'schemas collection. xmlDom.Schemas = schemaCache 'Load selected file as the DOM document. xmlDom.Load(xmlFilename) xmlDom.Validate(AddressOf ValidationCallBack)

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• PHP strlen question

  - by MrEnder

  Ok I am checking that a string is at least 4 characters long and 25 or less characters short I tried to use strlen like this $userNameSignupLength = strlen($userNameSignup); else if($userNameSignupLength<4 && $userNameSignupLength>25) { $userNameSignupError = "Must be between 4 to 25 characters long"; } but it doesn't work... what did I do wrong?

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• C++ CIN cin skips randomly

  - by user69514

  I have this program, but cin in randomly skips.. I mean sometimes it does, and sometimes it doesn't. Any ideas how to fix this? int main(){ /** get course name, number of students, and assignment name **/ string course_name; int numb_students; string assignment_name; Assignment* assignment; cout << "Enter the name of the course" << endl; cin >> course_name; cout << "Enter the number of students" << endl; cin >> numb_students; cout << "Enter the name of the assignment" << endl; cin >> assignment_name; assignment = new Assignment(assignment_name); /** iterate asking for student name and score **/ int i = 0; string student_name; double student_score = 0.0; while( i < numb_students ){ cout << "Enter the name for student #" << i << endl; cin >> student_name; cout << "Enter the score for student #" << i << endl; cin >> student_score; assignment->addScore( Student( student_name, student_score )); i++; } }

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• How do I validate numbers in Javascript?

  - by rythmvasu

  How to validate a numeric numbers?

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• Regular Expression to validate a timestamp

  - by Mohit Nanda

  Hi, I need a regular expression to validate a timestamp of the format, using Javascript: YYYY/MM/DD HH:MI:SS I tried cooking up a few, but seems my regex skills fail to cover something or other. Please give me a reference or way to do it. P.S. : I mention regex, only as a suggestion. Im using Javascript and welcome any alternative.

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• XML Schema and element with type string

  - by svick

  I'm trying to create an XML Schema and I'm stuck. It seems I can't define an element with string content. What am I doing wrong? Schema: <?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://ponderka.wz.cz/MusicLibrary0" targetNamespace="http://ponderka.wz.cz/MusicLibrary0"> <xs:element name="music-library"> <xs:complexType> <xs:sequence> <xs:element name="artist" type="xs:string"/> </xs:sequence> </xs:complexType> </xs:element> </xs:schema> Document: <?xml version="1.0"?> <music-library xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://ponderka.wz.cz/MusicLibrary0 data0.xsd" xmlns="http://ponderka.wz.cz/MusicLibrary0"> <artist>a</artist> </music-library> The validator says: Element <artist> is not allowed under element <music-library>. Reason: The following elements are expected at this location (see below) <artist> Error location: music-library / artist Details cvc-model-group: Element <artist> unexpected by type '{anonymous}' of element <music-library>. cvc-elt.5.2.1: The element <music-library> is not valid with respect to the actual type definition '{anonymous}'.

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• Unable to verify body hash for DKIM

  - by Joshua

  I'm writing a C# DKIM validator and have come across a problem that I cannot solve. Right now I am working on calculating the body hash, as described in Section 3.7 Computing the Message Hashes. I am working with emails that I have dumped using a modified version of EdgeTransportAsyncLogging sample in the Exchange 2010 Transport Agent SDK. Instead of converting the emails when saving, it just opens a file based on the MessageID and dumps the raw data to disk. I am able to successfully compute the body hash of the sample email provided in Section A.2 using the following code: SHA256Managed hasher = new SHA256Managed(); ASCIIEncoding asciiEncoding = new ASCIIEncoding(); string rawFullMessage = File.ReadAllText(@"C:\Repositories\Sample-A.2.txt"); string headerDelimiter = "\r\n\r\n"; int headerEnd = rawFullMessage.IndexOf(headerDelimiter); string header = rawFullMessage.Substring(0, headerEnd); string body = rawFullMessage.Substring(headerEnd + headerDelimiter.Length); byte[] bodyBytes = asciiEncoding.GetBytes(body); byte[] bodyHash = hasher.ComputeHash(bodyBytes); string bodyBase64 = Convert.ToBase64String(bodyHash); string expectedBase64 = "2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8="; Console.WriteLine("Expected hash: {1}{0}Computed hash: {2}{0}Are equal: {3}", Environment.NewLine, expectedBase64, bodyBase64, expectedBase64 == bodyBase64); The output from the above code is: Expected hash: 2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8= Computed hash: 2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8= Are equal: True Now, most emails come across with the c=relaxed/relaxed setting, which requires you to do some work on the body and header before hashing and verifying. And while I was working on it (failing to get it to work) I finally came across a message with c=simple/simple which means that you process the whole body as is minus any empty CRLF at the end of the body. (Really, the rules for Body Canonicalization are quite ... simple.) Here is the real DKIM email with a signature using the simple algorithm (with only unneeded headers cleaned up). Now, using the above code and updating the expectedBase64 hash I get the following results: Expected hash: VnGg12/s7xH3BraeN5LiiN+I2Ul/db5/jZYYgt4wEIw= Computed hash: ISNNtgnFZxmW6iuey/3Qql5u6nflKPTke4sMXWMxNUw= Are equal: False The expected hash is the value from the bh= field of the DKIM-Signature header. Now, the file used in the second test is a direct raw output from the Exchange 2010 Transport Agent. If so inclined, you can view the modified EdgeTransportLogging.txt. At this point, no matter how I modify the second email, changing the start position or number of CRLF at the end of the file I cannot get the files to match. What worries me is that I have been unable to validate any body hash so far (simple or relaxed) and that it may not be feasible to process DKIM through Exchange 2010.

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• How do you remove invalid hexadecimal characters from an XML-based data source prior to constructing

  - by Oppositional

  Is there any easy/general way to clean an XML based data source prior to using it in an XmlReader so that I can gracefully consume XML data that is non-conformant to the hexadecimal character restrictions placed on XML? Note: The solution needs to handle XML data sources that use character encodings other than UTF-8, e.g. by specifying the character encoding at the XML document declaration. Not mangling the character encoding of the source while stripping invalid hexadecimal characters has been a major sticking point. The removal of invalid hexadecimal characters should only remove hexadecimal encoded values, as you can often find href values in data that happens to contains a string that would be a string match for a hexadecimal character. Background: I need to consume an XML-based data source that conforms to a specific format (think Atom or RSS feeds), but want to be able to consume data sources that have been published which contain invalid hexadecimal characters per the XML specification. In .NET if you have a Stream that represents the XML data source, and then attempt to parse it using an XmlReader and/or XPathDocument, an exception is raised due to the inclusion of invalid hexadecimal characters in the XML data. My current attempt to resolve this issue is to parse the Stream as a string and use a regular expression to remove and/or replace the invalid hexadecimal characters, but I am looking for a more performant solution.

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• Spring validator default message codes not resolving

  - by Derek Clarkson

  Hi all, I have a custom spring validator which has the following default message: public @interface FieldMatch { String message() default "au.com.xxx.website.FieldMatchValidation"; ... The problem I'm having is that the message code is not being resolved and <form:error...> is simply displaying the code rather than the message (Which is in a properties file which is being used by a ResourceBundleMessageSource). I've also tried this as String message() default "{au.com.xxx.website.FieldMatchValidation}"; Which causes the message source to crash with an exception indicating that it thinks that the "{}" brackets should contain a number because it thinks it's a parameter place holder. I think that the issue is that the message code is not being seen as a message code and therefore not resolved, but I cannot figure out why. Any suggestions?

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• Xsd recursion of complexTypes

  - by Hatch

  I am just learning XML/XSD and am struggling with the implementation of an XML-schema which models a folder structure. What I had in mind was defining a complexType for the folder which can have additional folder instances that represent subfolders. Using the xsd schema validator here always returns that the schema is invalid. I tried defining the complexType up front and then using the ref keyword for subfolders: <xs:complexType name="tFolder"> <xs:sequence> <xs:element name="Path" type="tFolderType" msdata:Ordinal="0" /> <xs:element ref="Folder" minOccurs="0" maxOccurs="unbounded" /> <xs:element name="File" nillable="true" minOccurs="0" maxOccurs="unbounded"> <xs:complexType> <xs:simpleContent msdata:ColumnName="File_Text" msdata:Ordinal="0"> <xs:extension base="xs:string"> </xs:extension> </xs:simpleContent> </xs:complexType> </xs:element> </xs:sequence> <xs:attribute name="Type" type="tFolderType" /> As for the element itself: <xs:element name="Folder" type="tFolder" /> The error returned by the validator is: "Cannot resolve the name 'Folder' to a(n) 'element declaration' component." and the error occurs at the line <xs:element ref="Folder" minOccurs="0" maxOccurs="unbounded" /\> Defining the complexType within the element itself yields the exact same error: <xs:element name="Folder"> <xs:complexType> <xs:sequence> <xs:element name="Path" type="tFolderType" msdata:Ordinal="0" /> <xs:element ref="Folder" minOccurs="0" maxOccurs="unbounded" /> <xs:element name="File" nillable="true" minOccurs="0" maxOccurs="unbounded"> <xs:complexType> <xs:simpleContent msdata:ColumnName="File_Text" msdata:Ordinal="0"> <xs:extension base="xs:string"> </xs:extension> </xs:simpleContent> </xs:complexType> </xs:element> </xs:sequence> <xs:attribute name="Type" type="tFolderType" /> </xs:complexType> </xs:element> What I've read, this kind of recursion should work using ref. Can anyone tell me what I've done wrong? Maybe the xsd validator is just faulty? If so, does anyone know a better alternative? I've tried using the one from w3.org as well, but it seems to be taken offline...

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• Ruby email_veracity_checker getting Recipient OK for invalid emails

  - by digger69

  I was testing out email_veracity_checker from rails console and found that when I tested a google apps domain (w/ catchall), yahoo and another company domain, the smtp server always returned 250 recipient ok for invalid emails (wellformed, but bogus). It seems that these servers are always returning OK perhaps to prevent email harvesting. But it does seem to raise the question 'why even validate up-front', is this approach even valid in today's environment? Note: gmail did return 550 email account doesn't exist for invalid. related to How check if an email exist without send in Ruby? Use of email_veracity_checker send-in-ruby-use-of-email-veracity-checker I appreciate your thoughts.

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• Is there a difference between 'valid xml' and 'well formed xml'?

  - by screepnick

  I wasnt aware of a difference, but a coworker says there is, although he can't back it up. What's the difference if any?

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• How to validates cyrilic email in Rails 3.1?

  - by iKeler

  Let's say I had the email address like putin-crab@?????????.?? How to validate that address in rails 3.1? My Model(i use Mongoid): #encoding: utf-8 class User include Mongoid::Document field :email, :type => String validates :email, :presence => true, :format => { :with => RFC822::EMAIL } end For validations reqexp i use gem https://github.com/dim/rfc-822 in rails console (normal email): ruby-1.9.2-p290 :001 > usr = User.new( :email => "[email protected]" ) => #<User _id: 4ec627cf4934db7e4d000001, _type: nil, email: "[email protected]"> ruby-1.9.2-p290 :002 > usr.valid? => true in rails console (fu@#ing email): ruby-1.9.2-p290 :003 > usr = User.new( :email => "putin-crab@?????????.??" ) => #<User _id: 4ec627f44934db7e4d000002, _type: nil, email: "putin-crab@?????????.??"> ruby-1.9.2-p290 :004 > usr.valid? Encoding::CompatibilityError: incompatible encoding regexp match (ASCII-8BIT regexp with UTF-8 string) from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations/format.rb:9:in `=~' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations/format.rb:9:in `!~' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations/format.rb:9:in `validate_each' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validator.rb:153:in `block in validate' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validator.rb:150:in `each' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validator.rb:150:in `validate' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:302:in `_callback_before_13' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:404:in `_run_validate_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:81:in `run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:42:in `block in run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:67:in `call' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:67:in `run_cascading_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:41:in `run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations.rb:212:in `run_validations!' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations/callbacks.rb:53:in `block in run_validations!' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:390:in `_run_validation_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activesupport-3.1.1/lib/active_support/callbacks.rb:81:in `run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:42:in `block in run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:67:in `call' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:67:in `run_cascading_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/callbacks.rb:41:in `run_callbacks' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations/callbacks.rb:53:in `run_validations!' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/activemodel-3.1.1/lib/active_model/validations.rb:179:in `valid?' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/mongoid-2.3.3/lib/mongoid/validations.rb:70:in `valid?' from (irb):4 from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/railties-3.1.1/lib/rails/commands/console.rb:45:in `start' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/railties-3.1.1/lib/rails/commands/console.rb:8:in `start' from /home/username/.rvm/gems/ruby-1.9.2-p290@rail31/gems/railties-3.1.1/lib/rails/commands.rb:40:in `<top (required)>' from script/rails:6:in `require'

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• MessageBox if Recordset Update is Successful

  - by Paolo Bernasconi

  In Access 2007, I have a form to add a new contact to a table: RecSet.AddNew RecSet![Code_Personal] = Me.txtCodePersonal.Value RecSet![FName] = Me.TxtFName.Value RecSet![LName] = Me.txtLName.Value RecSet![Tel Natel] = Me.txtNatTel.Value RecSet![Tel Home] = Me.txtHomeTel.Value RecSet![Email] = Me.txtEmail.Value RecSet.Update This has worked so far, and the contact has successfully been aded. But I'm having two problems: I want to display a messagebox to tell the user the contact was successfully added If the contact was not successfully added because A contact with this name already exists A different issue Then display a message box "Contact already exists" or "error occured" respectively. My idea of doing this is: If recSet.Update = true Then MsgBox "Paolo Bernasconi was successfully added" Else if RecSet![FName] & RecSet![LName] 'already exist in table MsgBox "Contact already exists" Else MsgBox "An unknown error occured" I know this code is wrong, and obviously doesn't work, but it's just to give you an idea of what I'm trying to achieve. Thanks for all your help in advance.

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• Whats happening to my HTML?

  - by user156814

  I am making changes to my website, and I just noticed that things look different. In IE, the content doesnt center, theres a margin on my content, and the font looks bigger in chrome.. I ran it through Yahoo's HTML validator and the error I get is line 1 - Error: character "" not allowed in prolog. I believe that there may be some sort of whitespace being sent before the DOC TYPE, but I cant seem to fix it. The HTML looks fine in my text editor (Notepad++) so I dont know what the problem is. Im using a strict DOC Type. Everything was fine before I made any changes, but I cant pinpoint what caused the change. If it helps, I'm using a Framework (Kohana). My initial thought was that something was being sent to the browser by an echo or something, but I couldnt find any echo statements. I dont know what could be causing this... If you want to see any code or HTML just ask. Thanks. Heres the HTML (only head and doctype) via the page source in Google Chrome There seems to be some foreign characters in the source that I've never seen before, yet dont show up anywhere else (yahoo, or otherwise) <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Recent Debates - Clashing Thoughts</title> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="en-us" /> <meta name="description" content="Clashing Thoughts is a great place to argue! Search topics you feel passionate about, pick where you stand on the issue and get your point across. The votes are tallied up for every debate so you can even see which side is most popular." /> <meta name="keywords" content="debates, arguments, topics, popular topics, popular debates, surveys, choices" /> <link rel="stylesheet" type="text/css" href="http://localhost/css/master.css" media="screen" /> <link rel="stylesheet" type="text/css" href="http://localhost/css/clashingthoughts.css" media="screen" /> <link rel="icon" type="image/x-icon" href="http://localhost/images/favicon.ico" /> <link rel="shortcut icon" type="image/x-icon" href="http://localhost/images/favicon.ico" /> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> </head>

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• Can I copy/clone a function in JavaScript?

  - by Craig Stuntz

  I'm using jQuery with the validators plugin. I would like to replace the "required" validator with one of my own. This is easy: jQuery.validator.addMethod("required", function(value, element, param) { return myRequired(value, element, param); }, jQuery.validator.messages.required); So far, so good. This works just fine. But what I really want to do is call my function in some cases, and the default validator for the rest. Unfortunately, this turns out to be recursive: jQuery.validator.addMethod("required", function(value, element, param) { // handle comboboxes with empty guids if (someTest(element)) { return myRequired(value, element, param); } return jQuery.validator.methods.required(value, element, param); }, jQuery.validator.messages.required); I looked at the source code for the validators, and the default implementation of "required" is defined as an anonymous method at jQuery.validator.messages.required. So there is no other (non-anonymous) reference to the function that I can use. Storing a reference to the function externally before calling addMethod and calling the default validator via that reference makes no difference. What I really need to do is to be able to copy the default required validator function by value instead of by reference. But after quite a bit of searching, I can't figure out how to do that. Is it possible? If it's impossible, then I can copy the source for the original function. But that creates a maintenance problem, and I would rather not do that unless there is no "better way."

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• CustomValidator, pagemethods and JQuery what fun

  - by Goosey

  Hey all, I have a CustomValidator, RequiredFieldValidator and ValidationSummary controls on an aspx page to check the current password and make sure the new password is not blank. When I click submit I get the js alert() box from the summary control telling me about just the RequiredFieldValidator being false, but the client script for the CustomValidator does not seem to get its return value used. I have checked the "arguments.IsValid" value using FireBug, so it is getting called and returning the correct bool, but it never shows up in the val summary box? Thanks, Goosey

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• How do I require that an element has either one set of attributes or another in an XSD schema?

  - by Eli Courtwright

  I'm working with an XML document where a tag must either have one set of attributes or another. For example, it needs to either look like <tag foo="hello" bar="kitty" /> or <tag spam="goodbye" eggs="world" /> e.g. <root> <tag foo="hello" bar="kitty" /> <tag spam="goodbye" eggs="world" /> </root> So I have an XSD schema where I use the xs:choice element to choose between two different attribute groups: <xsi:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="qualified"> <xs:element name="root"> <xs:complexType> <xs:sequence> <xs:element maxOccurs="unbounded" name="tag"> <xs:choice> <xs:complexType> <xs:attribute name="foo" type="xs:string" use="required" /> <xs:attribute name="bar" type="xs:string" use="required" /> </xs:complexType> <xs:complexType> <xs:attribute name="spam" type="xs:string" use="required" /> <xs:attribute name="eggs" type="xs:string" use="required" /> </xs:complexType> </xs:choice> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xsi:schema> However, when using lxml to attempt to load this schema, I get the following error: >>> from lxml import etree >>> etree.XMLSchema( etree.parse("schema_choice.xsd") ) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "xmlschema.pxi", line 85, in lxml.etree.XMLSchema.__init__ (src/lxml/lxml.etree.c:118685) lxml.etree.XMLSchemaParseError: Element '{http://www.w3.org/2001/XMLSchema}element': The content is not valid. Expected is (annotation?, ((simpleType | complexType)?, (unique | key | keyref)*))., line 7 Since the error is with the placement of my xs:choice element, I've tried putting it in different places, but no matter what I try, I can't seem to use it to define a tag to have either one set of attributes (foo and bar) or another (spam and eggs). Is this even possible? And if so, then what is the correct syntax?

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• What is the regular expression for valdating a 'price' in a jtextfield

  - by wniroshan

  I want to validate a jtextfield as user inputs a price of some item. I have a perfectly working code which beeps and discard if user inputs some character that doesnt match the regular expression.(for regular expression "[0-9]+" it accepts any number of digits and beeps if a letter is given as input) But the problem is I want to validate an input like "12500.00". Format should be any number of digits before decimal point and two digits after the decimal point. eg: ddd.dd I tried the following regular expression. But the i doesnt allow user to input "." character. It allows user to input any number of digits but when "." key is pressed input is not accepted. here is the regular expression I used. "[0-9]+ | [0-9]+. | [0-9]+.[0-9]{1} | [0-9]+{2}" important: user input is validated character by character as the user inputs them to the jtextfield.

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• Rails: ValidationReflection and Formtastic not working together

  - by user336777

  I installed validation_reflection as a gem and out of the box it picked up on my validates_presence_of validations. But it is not picking up on any of the other default rails validations such as validates_format_of. I know from the documentation that i am supposed to add something like: config.reflected_validations << :validates_format_of to my config/plugins/validation_reflection.rb file (which didn't exist initially). I did this but nothing changed (i restarted the web server in between). I am not sure if it just isn't picking up on my file and loading validation_reflection.rb or if i have done something wrong. Anyone have any insights?

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• Display a boolean model field in a django form as a radio button rather than the default Checkbox.

  - by Lakshman Prasad

  This is how I went about, to display a Boolean model field in the form as Radio buttons Yes and No. choices = ( (1,'Yes'), (0,'No'), ) class EmailEditForm(forms.ModelForm): #Display radio buttons instead of checkboxes to_send_form = forms.ChoiceField(choices=choices,widget=forms.RadioSelect) class Meta: model = EmailParticipant fields = ('to_send_email','to_send_form') def clean(self): """ A workaround as the cleaned_data seems to contain u'1' and u'0'. There may be a better way. """ self.cleaned_data['to_send_form'] = int(self.cleaned_data['to_send_form']) return self.cleaned_data As you can see in the code above, I need a clean method that converts input string to an integer, which may be unnecessary. Is there a better and/or djangoic way to do this. If so, how? And no, using BooleanField seems to cause a lot more problems. Using that seemed obvious to me; but it isn't. Why is it so.

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• DDD: Client-side script to enforce invariants

  - by Mosh

  Hello, One thing that I'm confused about in regards to DDD is that our domain is supposed to handle all business logic and enforce invariants. I have noticed some people (me included) handle certain invariants in the presentation layer (i.e. WebForms, Views, etc) with javascript. This is mainly done to improve performance so the server is not hit for every request which may be invalid. Even though this approach may be beneficial performance-wise, it violates DDD principles. What if the business rules are changed? This way we don't have a rich domain where all the business rules are captured. In case of a change, we should change the domain as well as the presentation layer. Has anyone come across this situation before? I'd like to know your thoughts on this. Cheers, Mosh

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