[英]How to store a List<string> in MySql db
I'm working in a Role Access Base Control project and I need to store a list in a Mysql db for every single role. 我正在一个“角色访问基础控制”项目中工作,我需要在每个角色的Mysql数据库中存储一个列表。 Here is my code...
这是我的代码...
public class LoginModel
{
[Key]
public int lm_Id { get; set; }
public string User { get; set; }
public string Pass { get; set; }
public virtual ICollection<Roles> roles { get; set; }
public LoginModel()
{
roles = new HashSet<Roles>();
}
}
public class Roles
{
[Key]
public int role_Id { get; set; }
public string Name { get; set; }
public virtual ICollection<LoginModel> Users { get; set; }
public virtual List<string> Permissions { get; set; }
public Roles(){
Users = new List<LoginModel>();
}
}
There is the list of permissions per Role I want to store public virtual List<string> Permissions { get; set; }
我要存储公共虚拟
List<string> Permissions { get; set; }
每个角色都有权限List<string> Permissions { get; set; }
List<string> Permissions { get; set; }
List<string> Permissions { get; set; }
but when I try to insert some records in my Role db Table doesn't have a column for the list of strings List<string> Permissions { get; set; }
List<string> Permissions { get; set; }
但是当我尝试在Role db Table中插入一些记录时,没有字符串List<string> Permissions { get; set; }
的列List<string> Permissions { get; set; }
List<string> Permissions { get; set; }
using (var db = new MySqlContext())
{
#region insert
var l = new List<string>() { "Permission1", "Permission2", "Permission3" };
db.LoginModel.Add(
new LoginModel
{
User = "rafa",
Pass = "123",
roles =
{
new Roles {Name = "usuario", Permissions = l},
new Roles {Name = "usuario2", Permissions = l}
}
}
);
db.LoginModel.Add(
new LoginModel
{
User = "Ralph",
Pass = "123",
roles =
{
new Roles {Name = "Admin", Permissions = l},
new Roles {Name = "Admin2", Permissions = l}
}
}
);
db.SaveChanges();
#endregion
}
And here is what the MySql db Roles Table shows after insert: 这是插入后MySql db Roles Table显示的内容:
The var l = new List<string>() { "Permission1", "Permission2", "Permission3" };
var l = new List<string>() { "Permission1", "Permission2", "Permission3" };
that I'm inserting is not in the table. 我要插入的内容不在表格中。
I'm using Entity Framework 5 + MySql db + C# 我正在使用Entity Framework 5 + MySql db + C#
Hope toy guys can help me! 希望玩具人能帮助我!
you can store roles in private property as single comma separated string: 您可以将角色作为单个逗号分隔的字符串存储在私有属性中:
and have Roles property read from RolesInternal: 并从RolesInternal读取Roles属性:
private string RolesInternal { get; set; }
[NotMapped]
public List<string> Roles
{
get { return RolesInternal.Split(new[] {','}, StringSplitOptions.RemoveEmptyEntries).Select(t => t).ToList(); }
set { RolesInternal = string.Join(",", value); }
}
For sample code on mapping private properties: 有关映射私有属性的示例代码:
http://romiller.com/2012/10/01/mapping-to-private-properties-with-code-first/ http://romiller.com/2012/10/01/mapping-to-private-properties-with-code-first/
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