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Model binding in controller when form is posted - why to use view model instead of class from domain model?
Category : Programming Languages

I'm still reasonably new to ASP.NET MVC 3. I have come across view models and their use for passing data from a controller to the view. In my recent question on model binding two experts suggested that I should use view models for model binding as well.


This is something I haven't come across before. But both guys have assured me that it is best practise. Could someone maybe shed so


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EF 4.3 CodeFirst MVC3 WebApp and console use same model, but somehow they 'see' a different model which results in a model backing error
Category : Programming Languages

I'm using the same model for multiple applications: MVC3 web app, Windows services, and a console application. When I start the MVC3 web app, it generates the database. I can restart it, and everything is fine. But when I start the console application I get an error:


The model backing the '...Context' context has changed since the
database was created. Consider using Code


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Rails - Belongs_to Model, where Model can be any model implementing the relationship?
Category : Development Tools & Services

Is it possible to implement, in Rails 3, an association


class ApiCredentials < ActiveRecord::Base
belongs_to Model
end

where Model can be any model.


Then in the api_credentials table, I have fields like model_id and model to track this association.


I don't assume that


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Need help creating a Model and migration for Tag model for Post model (Rails)
Category : Programming Languages

I have a Post model and I would like to create a Tag model so that posts can have tags (more than one at a time). I want to be able to search a post's tags and search posts tagged as X.


This is what I've realized so far in order to make this work (correct me if I'm wrong):


The Tag model only needs a :name attribute and the Post model needs a :tag_list


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Checkboxes for models, two submit buttons: add person model to group model, reject person model from group model
Category : Web Design

I've looked at formset and model formset at Django many times, but I still can't figure the smart way to do this.


I have two models:


Group


Person


I have a queryset that contains all the persons trying to join a particular group: Person.objects.filter(wantsToJoinGroup=groupD)


Now, what I want to do


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MVVM WCF Entity as Model… How to implement propertychange notification in the view model when using Entity as your model
Category : Coding

I am implementing an MVVM Pattern using Entity as my model... When I instantiate the Model in the setter I add a propertychanged handler to the object to capture the field changes within the entity object...


When I step through code I find that after I modify the field within the object it is firing the Property Change event multiple times...
It has led me to believe that I ha


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Adjecency List Model OR Nested Set Model, which data model should I use to store my hierarchiecal data?
Category : Databases

I have to store messages that my web app fetch from Twitter into a local database. The purpose of storing messages is that I need to display these messages in a hierarchical order i.e. certain messages(i.e. status updates) that user input through my application are child nodes of others (I have to show them as sub-list item of parent message). Which data model should I use Adjacency List Model


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Can I use a model as Inline on a model where the foreign key is over another model?
Category : Web Design

This are my models:


class Image(models.Model):
class Size(models.Model):
image = models.ForeignKey(Image)
class Physical(models.Model):
size = models.ForeignKey(Size)

I'm trying to add Size and Physical as an Inline on ImageAdmin. The user has to create some sizes, before he can add some physi


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How to model this in django (inherited model, where each inherited model has a unique method)
Category : Programming Languages

How to model this in django:


1) have a base network of manufacturers


2) under each network their might be several distributors


3) a user of the system can access items through the distributor


4) if a user access the item through the distributor we want that item to be translated where each manufacturer will have their own translation



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Error in Model classes after creating Model.Context and Model classes in ASP.Net MVC 4
Category : ASP & ASP.net

I have generated xxxModel.Context and xxxModel template (in Models) from an existing database using EF 4.1 on ASP.Net MVC 4 application. After that when I build the project it gives the error for all the Model classes (POCO) saying "The type file name already contains a definition for memeber variable name". Where am I going wrong?



Thanks for help.


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