Question
So I have a Entity Framework Core first database and a .Net Core application.
I want to add Seed Data to it when creating the database. I know the FluentAPI has the HasData method but that is not what i am looking for.
When the database gets created I want to create a user with a random generated password (that is different every time) that will be saved on a file in the server.
I can't use the HasData method because then it will create the same password everytime.
So my question is: Is there a way, other than the HasData method, to add Seed data to a Entity Framework Core Code First database
Accepted Answer
Yes! There is a way! You can do as follows:
public static class DatabaseInitializer
{
public static void Initialize(YourDbContext dbContext)
{
dbContext.Database.EnsureCreated();
if (!dbContext.Users.Any())
{
// Write you necessary to code here to insert the User to database and save the the information to file.
}
}
}
The in the Configure method of the Startup class as follows:
public void Configure(IApplicationBuilder app, IHostingEnvironment env, YourDbContext dbContext)
{
// other configurations
..............
DatabaseInitializer.Initialize(dbContext);
..............
// other configurations
}
Initialize method will be called only once during the application start up.
Popular Answer
Create a DataSeeder class and Inject DbContext in it. Write a seedData method to insert the required data. This would be custom logic.
You can run this code after database is created.
public class DataSeeder
{
public static void SeedRandomPassword(YourDbContext context)
{
//// your custom logic to generate random password
//// set it to right user
context.Users.Add(); // Or Update depending on what you need
context.SaveChanges();
}
}
}
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