I am using aspnetboilerplate and added below configuration in preintiliaze in module. I have also added data annotation Audited to my entity but still it is not working. My entity is inheriting from AuditedEntity as don't need deleted feature. Please help
Configuration.EntityHistory.IsEnabled = true; Configuration.EntityHistory.Selectors.Add(new NamedTypeSelector("Abp.AuditedEntities", type => typeof(AuditedEntity).IsAssignableFrom(type)));
I have taken reference from here Can't enable Entity History in ASP.NET Zero
Below is entity definition
[Audited]
public partial class QuestionResponse : AuditedEntity<long>
{
public long ApplicationId { get; set; }
public long QuestionId { get; set; }
public string Response { get; set; }
public string Remark { get; set; }
public bool IsActive { get; set; }
public Application Application { get; set; }
public AbpUsers CreatorUser { get; set; }
public AbpUsers LastModifierUser { get; set; }
public Question Question { get; set; }
}
AuditedEntity<long> is not assignable to AuditedEntity.
Add a selector based on the interface IAuditedEntity instead.
Configuration.EntityHistory.Selectors.Add(
new NamedTypeSelector("Abp.AuditedEntities", type =>
// typeof(AuditedEntity).IsAssignableFrom(type)));
typeof(IAuditedEntity).IsAssignableFrom(type)));
Reference
From aspnetboilerplate/aspnetboilerplate's AuditedEntity.cs:
public abstract class AuditedEntity : AuditedEntity<int>, IEntity
{
}
public abstract class AuditedEntity<TPrimaryKey> : CreationAuditedEntity<TPrimaryKey>, IAudited
{
...
}
Related
This question already has answers here:
How to stop self-referencing loop in .Net Core Web API?
(4 answers)
Closed 4 years ago.
I am trying to get the students from the database and also include the course entities corresponding to them, but it seems that I'm doing something wrong.
this is student class:
public class Student
{
public int StudentID { get; set; }
public string Name { get; set; }
public int CourseID { get; set; }
public virtual Course Course { get; set; }
}
this is course class:
public class Course
{
public int CourseID { get; set; }
public string Name { get; set; }
public virtual ICollection<Student> Students { get; set; }
}
and I retrive the collection of student entities as shown below:
context.Students.Include(i => i.Course).ToList();
If I remove the include method, then I get data, but course property of student object is null.
P.S I am testing it with Postman and with "Include" I am not able to get anything.
If I comment this
public virtual ICollection<Student> Students { get; set; }
everything works fine.
I put the full code on github:
https://github.com/AlexDev5/Problem
You have to configure the serializer to ignore circular references in your project.
So for this you have to add following line of code inside ConfigureServices method in Startup.cs
Like
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc()
.AddJsonOptions(options => {
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});
}
Depending on the sample found here https://github.com/aspnet/EntityFramework.Docs/tree/master/samples/core/Querying/Querying
I wrote one solution, but I don't know if it is good approach for this problem:
I created StudentCourse class and defined it as shown below:
public class StudentCourse
{
public int StudentCourseID { get; set; }
public int StudentID { get; set; }
public Student Student{ get; set; }
public int CourseID { get; set; }
public Course Course { get; set; }
}
And I modified the Course class as shown below:
public class Course
{
public int CourseID { get; set; }
public string Name { get; set; }
public virtual ICollection<StudentCourse> Students { get; set; }
}
I have around 50 master tables that requires simple and straight forward CRUD operations, my tables are already available in the sql database.
My question is how to make it generic so that I dont need to create manually each individual page for master tables. I saw some ABP CRUDEntityAscyn classes in Boilerplate framework, but I am wondering how to bring it at Presentation layer (.cshtml).
If you need to create an application service that will have Create, Update, Delete, Get, GetAll methods for a specific entity, you can inherit from CrudAppService (or AsyncCrudAppService if you want to create async methods) class to create it easier. CrudAppService base class is generic which gets related Entity and DTO types as generic arguments and is extensible which allows you to override functionality when you need to customize it.
public class Task : Entity, IHasCreationTime
{
public string Title { get; set; }
public string Description { get; set; }
public DateTime CreationTime { get; set; }
public TaskState State { get; set; }
public Person AssignedPerson { get; set; }
public Guid? AssignedPersonId { get; set; }
public Task()
{
CreationTime = Clock.Now;
State = TaskState.Open;
}
}
[AutoMap(typeof(Task))]
public class TaskDto : EntityDto, IHasCreationTime
{
public string Title { get; set; }
public string Description { get; set; }
public DateTime CreationTime { get; set; }
public TaskState State { get; set; }
public Guid? AssignedPersonId { get; set; }
public string AssignedPersonName { get; set; }
}
public class TaskAppService : AsyncCrudAppService<Task, TaskDto>
{
public TaskAppService(IRepository<Task> repository)
: base(repository)
{
}
}
public interface ITaskAppService : IAsyncCrudAppService<TaskDto>
{
}
public class TaskAppService : AsyncCrudAppService<Task, TaskDto>, ITaskAppService
{
public TaskAppService(IRepository<Task> repository)
: base(repository)
{
}
}
calling webapi from client code:
var _editionService = abp.services.app.edition
_editionService.deleteEdition({
id: edition.id
}).done(function () {
getEditions();
abp.notify.success(app.localize('SuccessfullyDeleted'));
});
read for more > https://aspnetboilerplate.com/Pages/Documents/Application-Services#crudappservice-and-asynccrudappservice-classes
I am trying to implement code-first approach of entity framework. I have four entities UserInfo, Client, Admin and Account. I want relationships as:
Each Client has a UserInfo
Each Admin has a `UserInfo
Each Account is linked with a User(UserInfo)
Assuming these things i wrote the POCO models. With the relationships i want, is it correct ?Am i missing something?
public class UserInfo
{
public int UserInfoID { get; set; }
public Name Name { get; set; }
public Address Address { get; set; }
public Contact Contact { get; set; }
}
public class Admin
{
public int AdminID { get; set; }
public int UserInfoID { get; set; }
[ForeignKey("UserInfoID")]
public virtual UserInfo UserInfo { get; set; }
}
public class Client
{
public int ClientID { get; set; }
public CompanyDetails CompanyDetails { get; set; }
public int UserInfoID { get; set; }
[ForeignKey("UserInfoID")]
public virtual UserInfo UserInfo { get; set; }
}
public class Account
{
public int AccountID { get; set; }
[Required, Column("Balance"), Display(Name = "Account Balance")]
public double Balance { get; set; }
public int UserInfoID { get; set; }
[ForeignKey("UserInfoID")]
public virtual UserInfo UserInfo { get; set; }
}
What you have appears to be correct based on your requirements however I personally prefer the Entity Framework Model Builder when configuring your entities with Code First.
Using the model builder means that you don't have any attributes on your POCO entities which in turn means that you don't need an EF reference to use the entities.
Take a look at my article here for some more info on how to use the modelbuilder : http://blog.staticvoid.co.nz/2012/07/entity-framework-navigation-property.html
I created a new asp.net MVC3 application (internet application), and then I added a new model with 3 classes:
public class BizCard
{
[Required]
public string BizCardID { get; set; }
[Required]
public string Name { get; set; }
public string Address { get; set; }
public List<string> PhoneNumbers { get; set; }
[Required]
[DataType(DataType.EmailAddress)]
public string Email { get; set; }
public BizType type { get; set; }
public List<BizService> OfferedServices { get; set; }
public string Description { get; set; }
}
public class BizType
{
public int BizTypeID { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public double Price { get; set; }
}
public class BizService
{
public int BizServiceID { get; set; }
public List<BizType> AllowedBizTypes { get; set; }
public string Name { get; set; }
}
After that, I created a new controller, using the template "Controller with read/write actions and views using entity framework", I set the Model class to be "BizCard" and the data context class to be a new class which is called "BizDB". I was expecting to get a new class named BizDB that inherits from DbContext and includes 3 instances of DbSet:
DbSet<BizCard>, DbSet<BizType>, DbSet<BizService>.
In spite of that, I get the class with only one:
DbSet<BizCard>.
Am I missing something?
You are doing this using EF Code First approach.
1. So, you have to create a context class which should inherit DbContext containing required models as DbSet
2. Build the solution. Otherwise it will not be displayed at controller creation
Then you can create the controller using necessary model and its dbcontext.
I have built a simple survey-tool using MVC 3 with only 1 layer (MVC). I regret this now. All my database access and mapping is handled in the controllers, and some other mapping classes.
I would like to switch over to using three layers:
Presentation (MVC)
Business Logic
Data / Persistence (EF)
I am using the Entity Framework to handle everything with the database. The entity framework creates it's own domain classes. Where should the mapping between the Models that MVC uses and the models that EF creates go?
If the mapping is in the business layer, is there a need for the Models folder in the MVC project?
A survey-question consists of the Question itself, Rows and Columns. Theese are the models that i use:
public class Question {
public int Question_ID { get; set; }
public Boolean Condition_Fullfilled;
[Required(ErrorMessage = "Dette felt er påkrævet")]
public String Question_Wording { get; set; }
public String Question_Type { get; set; }
[Required(ErrorMessage = "Dette felt er påkrævet")]
public String Question_Order { get; set; }
public String Left_scale { get; set; }
public String Right_scale { get; set; }
public int Scale_Length { get; set; }
public String Left_Scale_HelpText { get; set; }
public String Right_Scale_HelpText { get; set; }
public Boolean Visible { get; set; }
public Boolean IsAnswered { get; set; }
public String Question_HelpText { get; set; }
public int Category_ID { get; set; }
}
public class MatrixColumns
{
public int Column_ID { get; set; }
public int Column_Number { get; set; }
public String Column_Description { get; set; }
public Boolean IsAnswer { get; set; }
public int? Procent { get; set; }
public bool Delete { get; set; }
public bool Visible { get; set; }
public int? Numbers { get; set; }
public String Help_Text { get; set; }
}
public class MatrixRows
{
public bool Delete { get; set; }
public bool Visible { get; set; }
public int Row_Id { get; set; }
public String Row_Number { get; set; }
public String Row_Description { get; set; }
public String Special_Row_CSS { get; set; }
public String Help_Text { get; set; }
// Dette er summen af procenterne af alle kolonner i rækken
public int RowSum { get; set; }
}
All the data for theese models is retrieved in the Controller, based upon a QuestionID, and mapped to a ViewModel that looks like this:
public class ShowMatrixQuestionViewModel : Question
{
public Dictionary<MatrixRows, List<MatrixColumns>> columnrow { get; set; }
public List<MatrixColumns> columns { get; set; }
public List<MatrixRows> rows { get; set; }
public ShowMatrixQuestionViewModel()
{
columns = new List<MatrixColumns>();
rows = new List<MatrixRows>();
columnrow = new Dictionary<MatrixRows, List<MatrixColumns>>();
}
}
So when i want to send a ShowMatrixQuestionViewModel to a View from my Controller, what is the route i should take?
This is my suggestion:
-> Controller calls a method in the business layer called
public ShowMatrixViewModel GetQuestion(int QuestionID) {}
-> GetQuestion calls the following methods in the data layer:
public Question GetQuestion(int QuestionId) {}
public MatrixRows GetRows(int QuestionId) {}
public MatrixColumns GetColumns(int id) {}
-> Entity framework returns "pure" objects, which i want to map over to the ones i posted above
-> GetQuestion calls methods to map the EF models to my own models
-> Last GetQuestion calls a method that maps the Questions, Rows and Columns:
ShowMatrixQuestionViewModel model = MapShowMatrixQuestionViewModel(Question, MatrixRows, MatrixColumns)
return model;
Is this correct?
Thanks in advance
To answer the first part of your question:
"Where should the mapping between the Models that MVC uses and the models that EF creates go?"
The answer is that the models MVC uses are the models created by the EF. Your EF tool in the ASP.NET MVC project is either Linq to SQL Classes or the ADO.NET Entity Framework Model. You should create these inside the Models folder in your project and they provide your data / persistence (EF).