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Search found 13164 results on 527 pages for 'model validations'.

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• Rails: Best practice for displaying ActiveRecord validation error in XML Builder?

  - by randombits

  I'm building a RESTful API using Ruby on Rails. My models have a lot of validation happening in them. I'm wondering what is the most "RESTful" way to respond to a user in the event that they make a request that fails on the model layer. Sending a 4xx HTTP response is the first step. What's the best practice for embedding the error messages inside of XML builder?

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• cakePHP get self hasMany array

  - by openprojdevel

  I have an table with fields like: empid,empname,empcode,department_id ... I need an array like [Model] -------[department_id 1] --------------[0] --------------------[empid] --------------------[empname] --------------------[empcode] --------------[1] --------------------[empid] --------------------[empname] --------------------[empcode] --------------[2] --------------------[empid] --------------------[empname] --------------------[empcode] -------[department_id 2] --------------[0] --------------------[empid] --------------------[empname] --------------------[empcode] --------------[1] --------------------[empid] --------------------[empname] --------------------[empcode] --------------[2] --------------------[empid] --------------------[empname] --------------------[empcode] -------[department_id 3] --------------[0] --------------------[empid] --------------------[empname] --------------------[empcode] --------------[1] --------------------[empid] --------------------[empname] --------------------[empcode] Regards,

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• primary key datatype in sql server database

  - by ooo

  i see after installing the asp.net membership tables, they use the data type "uniqueidentifier" for all of the primary key fields. I have been using "int" data type and doing increment by one on inserts. Is there any particular benefits to using the uniqueIdentifier data type compared to my current model of using int and auto increments on new inserts ?

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• CoreData: migration from 2 models

  - by Yola

  I have general app model, after was released any body can do plug-in for it, this plug-in can determine new db parts which merged with my general db. After some time i 'll release new db version^ and plug-in writers may release new version of their dbs. So i need map old version of merged db into new version. How i can do this?

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• In Django, how do I set a unique on a columN?

  - by alex

  class Radio(models.Model): title = models.CharField(max_length=2000, blank=True, null=True) listeners = models.IntegerField(default = 0, blank=True, null=True) I don't want duplicate TITLE column. How do I set a unique key?

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• Outputting a byte arrain into the src attribute of an img tag

  - by Nikron

  Hi, I'm using ASP.NET MVC and have a model which has an image (byte array) in one of the fields. I'm trying to output this image into the src attribute of the img tag. I'm looking to do something like '. How can I do this?

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• Entity framework 4 add to many-to-many

  - by mehanik

  I have model whith 3 tabels and one is link table with additional field: Groups Id Name Users Id Name Roles Id Name LinkTable Id GroupId UserId RoleId The quuestion is how to add 3 related entities: Code bellow doesn't work. using (var db = new dbEntities()) { db.Groups.AddObject(Group.CreateGroup(1, "TestGroup")); db.Users.AddObject(User.CreateUser(1, "AdminUser")); db.Roles.AddObject(Role.CreateRole(1, "Admin")); db.UserGroupRoles.AddObject(UserGroupRole.CreateUserGroupRole(1, 1, 1, 1)); db.SaveChanges(); }

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• How to get the Input checkbox id value using javascript?

  - by rockers

  I have input checkbox something like this.. <input class="inputchbox" id="Pchk" type="checkbox" name="check" value="<%=Model.ID%>" /> using javascript I need to get the all checkbox checked Ids in to the array? how do I need to get? thanks

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• need help ,php class and xml save load edit example.p

  - by jef

  http://www.sendspace.com/file/2zlfgn I have the php files i been trying to get them to save to xml. I have tried $product1=array(); $product1['id'] = new product( "19990","modrl","maf","purpose","war"); only the ID writes to xml. since model,maf etc are sub-elements is there a different way to create the objectarray?

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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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• Rails: how to require at least one field not to be blank

  - by deb

  Hi I know I can require a field by adding validates_presence_of :field to the model. However, how do I require at least one field to be mandatory, while not requiring any particular field? thanks in advance -- Deb

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• question and answer engine architecture

  - by sarvesh

  Can anyone give me insights as to how websites like chacha.com / kgb.com are designed. What could be the components involved when a user sends out an sms and how is that question stored. Should the question and answers be stored in a relational model or non relational?

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• Django modelform ForeignKey List

  - by Harry

  How do you get each item in the ForeignKey field in a list, for example: class Delegate(models.Model): excursion = models.ForeignKey(Excursion, limit_choices_to = {'is_activity': False}, related_name='excursion', null=True, blank=True) Template: {% for object in formset.excursion_set.all %} {{ object.lable }} etc {% endfor %} My reason is that I don't want the options to display as a dropdown, but in a custom way that I will style etc.

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• Doing a count over a filter query efficiently in django

  - by apple_pie

  Hello, Django newbie here, I need to do a count over a certain filter in a django model. If I do it like so: my_model.objects.filter(...).count() I'm guessing it does the SQL query that retrieves all the rows and only afterwards does the count. To my knowledge it's much more efficient to do the count without retrieving those rows like so "SELECT COUNT(*) FROM ...". Is there a way to do so in django?

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• Checking an empty Core Data relationship (SQLite)

  - by rwat

  I have a to-many relationship in my data model, and I'd like to get all the objects that have no corresponding objects in the relationship. For example: Customer - Purchases I want to get all Customers that have 0 Purchases. I've read somewhere that I could use "Purchases[SIZE] = 0", but this gives me an unsupported function expression error, which I think means it doesn't work with a SQLite backing store (which I don't want to switch from, due to some performance constraints). Any ideas?

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• What to consider when designing an online community rep system like SO's?

  - by John MacIntyre

  I'm designing a website and want a good reputation system like they built into StackOverflow. When I started to design my reputation system, I realized the SO Q/A model doesn't quite fit into my app (since mine is not Q/A), and that perhaps I should do some research first. So my question is; What should I consider when designing a community rep system?

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• Modifying an observable collection bound to a ListBox

  - by Rohit Kandhal

  I've a collection in viewmodel binded to listbox. I want to hide a particular type from the collection. Here is the code: public ObservableCollection [YZModeModelView] YZModeModelView { return this.XModelVIew.YZModelViewCollection; } I want to a particular type of model view's from YZModelViewCollection. eg. ModelView's with property abc set to null. Any suggestions ...

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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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• Returning modified data to a template

  - by Duncan

  I need to amend QuerySet data when i return it to a template. for example, model.objects.all() returns a date (with other fields), but i also want to return the number of days since that date has passed. This is so that in the template, i can say "you last logged in 4 days ago". What is the best way to do this?

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• Authlogic's current_user object in models

  - by jriff

  Hi all! I need to know the ID of the current user in a model: def after_save desc, points=nil, nil if answer_index == daily_question.correct_answer_index desc = I18n.t('daily_question.point_log.description.correct') points=daily_question.points else desc = I18n.t('daily_question.point_log.description.incorrect') end current_user.give_points(:description => desc, :points => points ) end But I guess that is not how it is done? Regards, Jacob

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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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• what kind of components can fail in rmi?

  - by Moblin

  Was wondering what kind of software and hardware component cant fail in a rmi program? so for example in a client server model when a client invokes an object in the server? thanks

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• How to export EclipseLink objects to XML

  - by Raven

  Hi, is there an easy approach to store my model, which I use with EclipseLink, in XML files? I want to implement an export functionality in my program and I was wondering if this can be done with eclipselink or with any other framework. Thanks

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• Error for Minitab program (statistics)

  - by user216428

  I have a problem with Minitab (a statistics program). When I enter my general model and want to see the results, the program warns me: too few arguments or space missing. Everything seems true, and I can't determine where the problem is. Could anyone help me on this subject?

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• Association with Searchlogic

  - by fivetwentysix

  Hi I have a post model that :has_many :reply, when using searchlogic, doing Post.reply_content_like("search"), returns a result for every reply under that post, I only want it to return once. Anyone know a way to solve this

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