33 lines
894 B
C#
33 lines
894 B
C#
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.Design;
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namespace InkForge.Migrations;
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public abstract class MigratingDbContextFactory<T> : IDesignTimeDbContextFactory<T>
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where T : DbContext
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{
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public T CreateDbContext(string[] args)
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{
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var configuration = new ConfigurationBuilder()
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.AddCommandLine(args)
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.Build();
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var options = new DbContextOptionsBuilder<T>();
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switch (configuration.GetValue<string>("DbProvider"))
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{
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case null:
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throw new Exception("DbProvider not set.");
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case { } provider:
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Configure(options, configuration.GetConnectionString("DefaultConnection")!, provider);
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break;
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}
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return CreateDbContext(options.Options);
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}
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protected abstract void Configure(DbContextOptionsBuilder<T> optionsBuilder, string connectionString, string provider);
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protected abstract T CreateDbContext(DbContextOptions<T> options);
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}
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