17 lines
574 B
C#
17 lines
574 B
C#
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using System;
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using System.Linq;
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using System.Linq.Expressions;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.ChangeTracking;
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namespace Geekbot.net.Lib.Extensions
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{
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public static class DbSetExtensions
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{
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public static EntityEntry<T> AddIfNotExists<T>(this DbSet<T> dbSet, T entity, Expression<Func<T, bool>> predicate = null) where T : class, new()
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{
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var exists = predicate != null ? dbSet.Any(predicate) : dbSet.Any();
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return !exists ? dbSet.Add(entity) : null;
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}
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}
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}
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