foreign-keys

I'm trying to change the default value of a foreignkey-formfield to set a Value of an other model depending on the logged in user . But I'm racking my brain on it... This: Changing ForeignKey’s defaults in admin site would an option to change the empty_label, but I need the default_value. #Now I tried the following without errors but it didn't had the desired effect: class EmployeeAdmin(admin.ModelAdmin): ... def formfield_for_foreignkey(self, db_field, request=None, **kwargs): formfields= super(EmployeeAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs) if request.user.is

I am trying to create a model for a ruby on rails project that builds relationships between different words. Think of it as a dictionary where the "Links" between two words shows that they can be used synonymously. My DB looks something like this: Words ---- id Links ----- id word1_id word2_id How do I create a relationship between two words, using the link-table. I've tried to create the model but was not sure how to get the link-table into play: class Word < ActiveRecord::Base has_many :synonyms, :class_name => 'Word', :foreign_key => 'word1_id' end In general, if your association has

How can I give foreign key a name in RoR? I use following command to give foreign key: rails generate scaffold Table2 id:integer Table1:references This command adds foreign key of Table1 in Table2 but with default name that is Table1_id . So how can I give custom name to it for example my_table_f_key instead of Table1_id . I'm using Ruby 1.9.2 and Rails 3.0.3. Edit:- In my project.rb model: belongs_to :own, :class_name => User In my user.rb model: has_many :owned_projects, :class_name => Project, :foreign_key => :owner how I created my project model rails generate scaffold Project name:string

I am trying to persist a one-to-many and a many-to-one relation using Hibernate 4.1.1 but the foreign key is always NULL . There are two entities: Account and Client . A Client could have multiple Accounts while an Account has exactly one Client . Here are the classes (only what matters): Account.java @Entity @Table(name = "account") public class Account implements Serializable { private Client client; @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "id") public long getId() { return id; } @ManyToOne @JoinColumn(name = "id_client") public Client getClient() { return client;

I have created Empty MVC (ASP.NET Web Application) project using Visual Studio 2013 Update 2 RC & then added AspNet Identity Samples using: PM>Install-Package Microsoft.AspNet.Identity.Samples -Pre I have enabled and added migrations & then updated database, which created default tables. I want to create Customer table which contains 2 columns as Foreign Keys to: Groups table (GroupId column) AspNetUsers table (Id column) So I have created 2 classes Customer & Group and added Foreign Keys using Data-annotations as shown below: namespace IdentitySample.Models { // You can add profile data for

I am trying to make a form on one page that uses multiple models. The models reference each other. I am having trouble getting the form to validate because I cant figure out how to get the id of two of the models used in the form into the form to validate it. I used a hidden key in the template but I cant figure out how to make it work in the views My code is below: views: def the_view(request, a_id,): if request.method == 'POST': b_form= BForm(request.POST) c_form =CForm(request.POST) print "post" if b_form.is_valid() and c_form.is_valid(): print "valid" b_form.save() c_form.save() return