实体框架过滤子集合

Question

我有这些课程:

public class Project
{
    public int ProjectId { get; set; }
    public int AccountId { get; set; }
    public int UserId { get; set; }
    public string Name { get; set; }
    public DateTime StartDate { get; set; }
    public string Description { get; set; }
    public string Tags { get; set; }
    public virtual List<Task> Tasks { get; set; }
}

public class Task
    {
        public int TaskId { get; set; }
        public int ProjectId { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public DateTime StartDate { get; set; }
        public DateTime? DueDate { get; set; }
        public int TaskOwnerId { get; set; }
        public string Tags { get; set; }
        public virtual Project Project { get; set; }
        public virtual List<TaskAssigned> TaskAssigns { get; set; }
        public virtual List<TaskComment> TaskComments { get; set; }
    }

public class TaskAssigned
    {
        public int TaskAssignedId { get; set; }
        public int TaskId { get; set; }
        public int UserId { get; set; }
    }

我需要根据分配给他/她的任务把所有项目都归属于每个用户我已经提出了这个解决方案,但我无法继续前进:

public List<Project> GetProjectsByAccountIdUserId(int accountId, int userId)
        {
            var tasks = context.TaskAssigns.Where(ta => ta.UserId == userId).ToList();
            var projects =context.Projects.Where(p => p.AccountId == accountId).Include("Tasks").ToList();
            return projects;
        }

我不知道如何通过taskId关联和过滤每个项目的任务.

Answer 1

 context.Projects.Where( 
            p => p.Tasks.Any( 
                        t => t.TaskAssigns.Any( ta => ta.UserId == userId ) 
                        ) 
                      )