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Improve migration Script

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runebaas 2018-05-13 14:14:50 +02:00
parent 32ae82ca8d
commit 3fa4115502
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4 changed files with 52 additions and 14 deletions
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Geekbot.net/Lib/Extensions/DbSetExtensions.cs Normal file
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using System;
using System.Linq;
using System.Linq.Expressions;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
namespace Geekbot.net.Lib.Extensions
{
public static class DbSetExtensions
{
public static EntityEntry<T> AddIfNotExists<T>(this DbSet<T> dbSet, T entity, Expression<Func<T, bool>> predicate = null) where T : class, new()
{
var exists = predicate != null ? dbSet.Any(predicate) : dbSet.Any();
return !exists ? dbSet.Add(entity) : null;
}
}
}