将列名称约定添加到 EF6 FluentAPI [英] Add Column Name Convention to EF6 FluentAPI

问题描述

这个问题是 4 年前在这里提出的:EF 映射为表中的所有列名添加前缀我希望这些天有更好的处理方式.

This question was asked here 4 years ago: EF Mapping to prefix all column names within a table I'm hoping there's better handling these days.

我正在使用 EF6 Fluent API，我将其称为 Code First without Migrations.我的模型有 POCO，并且我的大部分数据库列名都定义为 [SingularTableName]Field(例如，CustomerAddress db 列映射到 Customers POCO 中的 Address 字段)

I'm using EF6 Fluent API, what I'll call Code First Without Migrations. I have POCOs for my models, and the majority of my database column names are defined as [SingularTableName]Field (e.g., CustomerAddress db column maps to Address field in Customers POCO)

表格:

CREATE TABLE dbo.Customers (
    -- ID, timestamps, etc.
    CustomerName NVARCHAR(50),
    CustomerAddress NVARCHAR(50)
    -- etc.
);

型号:

public class Customer
{
    // id, timestamp, etc
    public string Name {get;set;}
    public string Address {get;set;}    
}

模型构建器:

modelBuilder<Customer>()
    .Property(x => x.Name).HasColumnName("CustomerName");
modelBuilder<Customer>()
    .Property(x => x.Address).HasColumnName("CustomerAddress");

目标:

我真正想要的是能够为 FluentAPI 说这样的话:

What I'd really like is to be able to say something like this for the FluentAPI:

modelBuilder<Customer>().ColumnPrefix("Customer");
// handle only unconventional field names here
// instead of having to map out column names for every column

推荐答案

With 基于模型的代码优先约定 这变得非常简单.只需创建一个实现 IStoreModelConvention ...

With model-based code-first conventions this has become very simple. Just create a class that implements IStoreModelConvention ...

class PrefixConvention : IStoreModelConvention<EdmProperty>
{
    public void Apply(EdmProperty property, DbModel model)
    {
        property.Name = property.DeclaringType.Name + property.Name;
    }
}

...并将其添加到 OnModelCreating 中的约定中:

... and add it to the conventions in OnModelCreating:

modelBuilder.Conventions.Add(new PrefixConvention());

这篇关于将列名称约定添加到 EF6 FluentAPI的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！