实体框架核心 - 将十进制精度和比例设置为所有十进制属性 [英] Entity Framework Core - setting the decimal precision and scale to all decimal properties

问题描述

我想将所有十进制属性的精度设置为（18,6）。在EF6中，这很简单：

I want to set the precision of all the decimal properties to (18,6). In EF6 this was quite easy:

modelBuilder.Properties<decimal>().Configure(x => x.HasPrecision(18, 6));

但我似乎在EF Core中找不到类似的东西。删除级联删除约定不像EF6那么简单，所以我发现了以下解决方法：

but I can't seem to find anything similar to this in EF Core. Removing the cascade delete convention wasn't as simple as in EF6 so I found the following workaround:

EF6：

modelBuilder.Conventions.Remove<ManyToManyCascadeDeleteConvention>();
modelBuilder.Conventions.Remove<OneToManyCascadeDeleteConvention>();

EF核心：

foreach (var relationship in modelBuilder.Model.GetEntityTypes().SelectMany(e => e.GetForeignKeys()))
    relationship.DeleteBehavior = DeleteBehavior.Restrict;

之后，我阅读，我尝试了一个类似的方法：

and after I read this, I tried a similar approach:

foreach (var entityType in modelBuilder.Model.GetEntityTypes()
    .SelectMany(x => x.GetProperties())
    .Where(x => x.ClrType == typeof(decimal)))
        {
            // what to do here?
        }

我希望如果我在正确的轨道上，如何继续，或如果没有，我应该开始在所有十进制属性中添加数据注释。

I would like if I am on the right track and how to continue, or if not, should I start putting data annotations on all the decimal properties.

推荐答案

你已经很近了这是代码。

You got close. Here's the code.

foreach (var property in modelBuilder.Model.GetEntityTypes()
    .SelectMany(t => t.GetProperties())
    .Where(p => p.ClrType == typeof(decimal)))
{
    property.Relational().ColumnType = "decimal(18, 6)";
}

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