Net Core: Create Generic Repository Interface Id Mapping for All Tables Auto Code Generation

Question

We just Scaffolded our database, and created Models from Database tables in Entity Framework.

Additionally, we are creating files with Ids which Map to the Primary K

Answer 1

I agree with @Ivan, I wouldn't recommend you this way, but you answered that you need to, so here we go.

You're using EFCore right ? Luckily, EFCore is open-source, so we can dig into the source code and build custom EFCore versions.

A few months ago I had also a specific need with EF Context scaffolding, we also have over 200 tables and needed to put mappings for each table in a separate class, because EF Core, defaults to put all the mapping stuff in the DbContext file and this generated a 10k+ lines of code long DbContext class for us

Answer 2

With T4 Research, answer below. People are free to edit/optimize.

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System" #>
<#@ import namespace="System.IO" #>

<#
    DirectoryInfo d = new DirectoryInfo(Path.GetDirectoryName(this.Host.TemplateFile) + @"\Scaffold");
    FileInfo[] Files = d.GetFiles("*.cs");
    string str = "";

    foreach(FileInfo file in Files )
    {
        var modelName = Path.GetFileNameWithoutExtension(file.Name);
#>
using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;

namespace Data.Entities
{
    public partial class <#=modelName #> : IEntity, IAuditedEntity
    {
        [NotMapped]
        public int Id { get => <#=modelName #>Id; set => <#=modelName #>Id = value; }
    }
}

<#
  // End of file.
  SaveOutput(file.Name.ToString());
}
#>
<#+
    private void SaveOutput(string outputFileName) {
      string templateDirectory = Path.GetDirectoryName(Host.TemplateFile);
      string outputFilePath = Path.Combine(templateDirectory, outputFileName);
      File.WriteAllText(outputFilePath, this.GenerationEnvironment.ToString()); 
      this.GenerationEnvironment.Remove(0, this.GenerationEnvironment.Length);
    }
#>

Update:

For some reason, code is also making a copy of the Code Generation T4 File. Trying to fix it now, someone can write new answer, and I will accept it, Thanks.