Object Extension #6363

15937823 created one year ago

ABP Framework version: v7.3.1
UI Type: Angular
Database System: EF Core MySQL
Tiered (for MVC) or Auth Server Separated (for Angular): yes
Exception message and full stack trace:
Steps to reproduce the issue:

How to query the extended fields from the database based on the input conditions of the UI after object extension? For example, adding a FullName to the organization and adding query criteria in the UI to retrieve the organization with the specified full name from the database?

16 Answer(s)

0

Anjali_Musmade created one year ago
Support Team Support Team Member

Hi,

Have you check this doc https://docs.abp.io/en/abp/latest/Object-Extensions?
0

15937823 created one year ago

Hi,

Have you check this doc https://docs.abp.io/en/abp/latest/Object-Extensions?

There are no extended fields in the document as query criteria to read data from the database
0

15937823 created one year ago

for example:

var query = await _organizationUnitRepository.GetQueryableAsync();

query.WhereIf(input.FullName.IsNotNullOrWhiteSpace(), e => e.FullName.Contains(input.FullName));

FullName is an extended field
0

Anjali_Musmade created one year ago
Support Team Support Team Member

Hi,

Please check https://docs.abp.io/en/abp/latest/Entity-Framework-Core#extra-properties-object-extension-manager and https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities

Also have look to this https://docs.abp.io/en/abp/latest/Module-Entity-Extensions

regards,
0

15937823 created one year ago

Hi,

Please check https://docs.abp.io/en/abp/latest/Entity-Framework-Core#extra-properties-object-extension-manager and https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities

Also have look to this https://docs.abp.io/en/abp/latest/Module-Entity-Extensions

regards,

If there is one in the document, what else should I send ISSUE for?
0

15937823 created one year ago

Hi,

Please check https://docs.abp.io/en/abp/latest/Entity-Framework-Core#extra-properties-object-extension-manager and https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities

Also have look to this https://docs.abp.io/en/abp/latest/Module-Entity-Extensions

regards,

Will the support team only send document links?
0

Anjali_Musmade created one year ago
Support Team Support Team Member

Hi,

You can use GetProperty & SetProperty Extension Methods for getting or setting the extra property value, this is what you expect, right? Correct me if I miss understood you.
0

15937823 created one year ago

Hi,

You can use GetProperty & SetProperty Extension Methods for getting or setting the extra property value, this is what you expect, right? Correct me if I miss understood you.

GetProperty&SetProperty I know, do I want to use extended fields to query records in the database that meet the criteria? Do you understand?

Do I need to redefine entity classes in the Domain layer?
0

15937823 created one year ago

for example:

var query = await _organizationUnitRepository.GetQueryableAsync();

query.WhereIf(input.FullName.IsNotNullOrWhiteSpace(), e => e.FullName.Contains(input.FullName));

FullName is an extended field

There is no defined FullName field in OrganizationUnit, is FullName an extension field of OrganizationUnit? Do you understand?
0
liangshiwei created one year ago
Support Team Fullstack Developer
Hi,

First, use the module entity extension system to add a new property to the organization. (I think you have completed this step.)

https://docs.abp.io/en/abp/latest/Module-Entity-Extensions#quick-example

Then, use the ef core entity extension system to make the property as a regular property in the entity

To overcome the difficulties described above, ABP Framework entity extension system for the Entity Framework Core that allows you to use the same extra properties API defined above, but store a desired property as a separate field in the database table.

https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities#entity-extensions-ef-core

Then you need to add and apply migration files: dotnet ef migrations add add_fullname_to_ou, dotnet ef database update

Now, the FullName is a shadow property, and you can access it in this way.

var query = await _organizationUnitRepository.GetQueryableAsync(); query.WhereIf(input.FullName.IsNotNullOrWhiteSpace(), e => EF.Property<string>(e, "FullName") == input.FullName);
0
15937823 created one year ago
Hi,

First, use the module entity extension system to add a new property to the organization. (I think you have completed this step.)

https://docs.abp.io/en/abp/latest/Module-Entity-Extensions#quick-example

Then, use the ef core entity extension system to make the property as a regular property in the entity

To overcome the difficulties described above, ABP Framework entity extension system for the Entity Framework Core that allows you to use the same extra properties API defined above, but store a desired property as a separate field in the database table.

https://docs.abp.io/en/abp/latest/Customizing-Application-Modules-Extending-Entities#entity-extensions-ef-core

Then you need to add and apply migration files: dotnet ef migrations add add_fullname_to_ou, dotnet ef database update

Now, the FullName is a shadow property, and you can access it in this way.

var query = await _organizationUnitRepository.GetQueryableAsync(); query.WhereIf(input.FullName.IsNotNullOrWhiteSpace(), e => EF.Property<string>(e, "FullName") == input.FullName);

Okay, I'll give it a try. The writing style is: e=>EF Property<string>(e, "FullName")==input FullName

Thank you very much！！！
0

liangshiwei created one year ago
Support Team Fullstack Developer

: )
0

15937823 created one year ago

: )

Hello, may I ask how to use Include if the extension field is a foreign key? thanks
0

liangshiwei created one year ago
Support Team Fullstack Developer

Hi,

You need additional queries, because entities have no navigation properties
0

15937823 created one year ago

Hi,

You need additional queries, because entities have no navigation properties

Can you help me write an example? thank you.

liangshiwei created one year ago

Support Team Fullstack Developer

Ok, for example:


public class Book: ...
{
  
}

ObjectExtensionManager.Instance
    .MapEfCoreProperty<IdentityUser, Guid>(
        "BookId",
        (entityBuilder, propertyBuilder) =>
        {
            entityBuilder.HasOne(typeof(Book), "BookId").WithOne().IsRequired(false).HasForeignKey("BookId");
        }
    );

public class IdentityUserWithBook
{
    public IdentityUser User { get; set;}
    public Book Book { get; set;}
}


var query = await _userRepository.GetQueryableAsync(); 
 
var users = await query.ToListAsync();
var bookIds = users.Select(x => x.GetProperty<Guid>("BookId")).ToList();
var books = await _bookRepository.GetListAsync(x => bookIds.Contains(x.Id)).ToListAsync();

var result = users.Select(u => new IdentityUserWithBook
        {
            User = u,
            Book = books.FirstOrDefault(b => u.GetProperty<Guid>("BookId") = b.Id)
        }).ToList();

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16 Answer(s)

If there is one in the document, what else should I send ISSUE for?

Will the support team only send document links?