![]() If you don’t want to add these Converters and Comparers to all of your projects, you can use my small library, TinyHelpers.EntityFrameworkCore, that is available on GitHub and NuGet. Note that, even with this solution, we still don’t have support for migrations, so if we try to create a migration for a class that contains a DateOnly or TimeOnly property, we’ll get an InvalidOperationException and, on the other hand, if we scaffold a table that has a date or time column, they will be mapped to DateTime and TimeSpan types, respectively. Time is a TimeOnly property and time on database Date is a DateOnly property and date on database Protected override void OnModelCreating(ModelBuilder modelBuilder) We just need to add the converters and the comparers in the OnModelCreating method of the DbContext: So, now we can easily enable support for DateOnly and TimeOnly properties in our classes, mapping columns that use the date and time types. In the code above we have defined also the Value Compares to correctly handle data comparison. In the same way, TimeOnl圜onverter converts a TimeOnly properties to and from a TimeSpan. Whether it is in the scope of the same http request or across different http requests.The DateOnl圜onverter converts a DateOnly to DateTime (that is the corresponding type that Entity Framework Core actually supports) and vice versa. With a transient service a new instance is provided every time a service instance is requested Then the same instance is provided for the entire scope of that http request.īut every new http request will get a new instance of the service. However, with in the same http request if the service is required in multiple places like in the view and in the controller ![]() In scoped service with every http request we get a new instance. In all the places where that service is needed. = true ĪddSingleton() creates a single instance of the service when it is first requested and reuses that same instance Public string NormalizedUserName ).SetCompatibilityVersion(CompatibilityVersion.Version_3_0) USING btree ("NormalizedUserName" COLLATE pg_catalog."default") USING btree ("NormalizedEmail" COLLATE pg_catalog."default") ĬREATE UNIQUE INDEX "UserNameIndex" ON public."AspNetUsers" "ClaimGuest" BOOLEAN DEFAULT false NOT NULL,ĬONSTRAINT "PK_AspNetUsers" PRIMARY KEY("Id")ĬREATE INDEX "EmailIndex" ON public."AspNetUsers" "ClaimUser" BOOLEAN DEFAULT false NOT NULL, "ClaimAdmin" BOOLEAN DEFAULT false NOT NULL, In practice you define the class in the sample, and doing the scaffolding you obtain this SQL table: The declarations without the Claims will suffice, it corresponds to AspNetUsers table “as is”, if you add properties as in the sample those are fields that will be created in the db table when you do the scaffolding. ![]() Public class ApplicationUser : IdentityUser Net Core 3.1 it seems required to use, for user management, a class inheriting from IdentityUser, which is in namespace. Net Core 2.x it was possible to use the context created from scaffolding for everything (user auth and management, normal db operations on other tables) instead in. This command scaffolds a DbContext and entity type classes for a specified database. In Helpers we can add a AppSettings class that will be useful for user auth: Our models folder is filled with classes that are mapped to the db tables:Īdd in the solution 2 folders, Services and Helpers. Scaffold-DbContext "User ID=postgres Password= Server=localhost Port=5432 Database=coreusers Integrated Security=false Pooling=true " -OutputDir Models Then from menu Tools->Nuget Package Manager->Package Manager Console we open an Powershell console, here we can write In order to do the “scaffolding” we must install first the packages and from NuGet. In our solution we have a Models folder, where will be placed the classes representing our PostGres tables for a database named “coreusers”. "DefaultConnection": "User ID=postgres Password= Server=localhost Port=5432 Database=coreusers Integrated Security=false Pooling=true " "Secret": "somelongstringthatshouldbe64chars" We are connecting to PostGres, so our appsettings.json is The provider looks and feels just like any other Entity Framework Core provider. NET O/RM from Microsoft, and use familiar LINQ syntax to express queries. It allows you to interact with PostgreSQL via the most widely-used. ![]() ![]() In my previous post I began to explain how to set an. is the open source EF Core provider for PostgreSQL. ![]()
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