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fix(postgres): run Postgres type-mapping block at END of OnModelCreating

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alireza
2026-10-10 01:15:10 +03:30
parent a69862fe73
commit e5207d53b7
1 changed files with 20 additions and 18 deletions
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38
src/GreenHome.Infrastructure/Data/GreenHomeDbContext.cs
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@@ -38,24 +38,6 @@ public sealed class GreenHomeDbContext : DbContext
{
base.OnModelCreating(modelBuilder);
// Postgres-specific mappings (SQL Server path is untouched):
// 1) DateTime -> "timestamp" (no tz): mirrors naive datetime2, accepts any Kind.
// 2) varchar: Postgres counts BYTES, SQL Server's nvarchar counts CHARACTERS.
// x4 keeps char-count semantics for any UTF-8 charset (Persian = 2 bytes/char).
if (Database.ProviderName == "Npgsql.EntityFrameworkCore.PostgreSQL")
{
foreach (var et in modelBuilder.Model.GetEntityTypes())
{
foreach (var p in et.GetProperties())
{
if (p.ClrType == typeof(DateTime) || p.ClrType == typeof(DateTime?))
p.SetColumnType("timestamp");
else if (p.ClrType == typeof(string) && p.GetMaxLength() is int len)
p.SetColumnType($"character varying({len * 4})");
}
}
}
modelBuilder.Entity<Domain.Device>(b =>
{
b.ToTable("Devices");
@@ -515,5 +497,25 @@ public sealed class GreenHomeDbContext : DbContext
b.HasIndex(x => x.At);
b.HasIndex(x => x.AdminUserId);
});
// Postgres-specific mappings (SQL Server path is untouched).
// MUST run last: fluent HasMaxLength/HasColumnType calls above set the
// values we adjust here, so this block has to see the final model state.
// 1) DateTime -> "timestamp" (no tz): mirrors naive datetime2, accepts any Kind.
// 2) varchar: Postgres counts BYTES, SQL Server's nvarchar counts CHARACTERS.
// x4 keeps char-count semantics for any UTF-8 charset (Persian = 2 bytes/char).
if (Database.ProviderName == "Npgsql.EntityFrameworkCore.PostgreSQL")
{
foreach (var et in modelBuilder.Model.GetEntityTypes())
{
foreach (var p in et.GetProperties())
{
if (p.ClrType == typeof(DateTime) || p.ClrType == typeof(DateTime?))
p.SetColumnType("timestamp");
else if (p.ClrType == typeof(string) && p.GetMaxLength() is int len)
p.SetColumnType($"character varying({len * 4})");
}
}
}
}
}