Abp.VNext-显示加载实体导航属性

方式一：为实体配置默认导航并设置includeDetails属性为true

[DependsOn(typeof(AbpEntityFrameworkCoreMySQLModule))]
public class EntityFrameworkCoreModule : AbpModule
{
    public override void ConfigureServices(ServiceConfigurationContext context)
    {
        Configure<AbpEntityOptions>(options =>
        {
            options.Entity<Order>(x =>
            {
                x.DefaultWithDetailsFunc = query => query.Include(o => o.OrderDetails);
            });
        });
    }
}

//第二个参数是includeDetails，不填默认是true，若为false则不会加载
var order = await _orderRepository.FindAsync(orderId);
或者
var order = await _orderRepository.FindAsync(orderId,true);
或者
var order = await _orderRepository.GetAsync(orderId);
或者
var order = await _orderRepository.GetAsync(orderId,true);

方式二：Include

var dbContext = await GetDbContextAsync();

//方式一
//var queryable = dbContext.Set<Order>().Include(x => x.OrderDetails);
//方式二
var queryable = (await GetQueryableAsync()).Include(x => x.OrderDetails);
//方式三
var queryable = (await this.WithDetailsAsync()).Include(x => x.OrderDetails);


return await queryable.WhereIf(orderId.isNotNull(), x =>x.Id==orderId).ToListAsync();

方式三：withDetailAsync

var queryable = await _orderRepository.WithDetailsAsync(x => x.OrderDetails);
var order = queryable.Where(x => blogIds.Contains(x.Id)).FirstOrDefault(); 

var queryable = await WithDetailsAsync(x => x.OrderDetails);
return await queryable.WhereIf(orderId.isNotNull(), x =>x.Id==orderId).ToListAsync();

扩展1：单个实体加载多个导航属性

var queryable = await _orderRepository.WithDetailsAsync(x => x.OrderDetails1,x=>x.OrderDetails2);

var queryable = (await this.WithDetailsAsync()).Include(x => x.OrderDetails1).Include(x => x.OrderDetails2);

扩展2：单个实体加载带有子孙的导航属性

var queryable = (await this.WithDetailsAsync()).Include(x => x.OrderDetails1).ThenInclude(x => x.Goods1);