ASP. NET Identity Role-rights Management 4

1.1. User-role Analysis

Presumably everyone has noticed that Microsoft.AspNet.Identity.EntityFramework is the EF implementation of Microsoft.AspNet.Identity.Core, how Microsoft handles Identityuser and Identityrole The relationship? Because the two are many-to-many relationships, an association table is added to the relational database, and the Identityuserrole is added, and the Identityuserrole list in Identityuser and Identityrole is shown below.

public class Identityuserrole<tkey> { Public virtual TKey Roleid {get; set;} Public virtual TKey UserId {get; set;} }

Identityuser

public class Identityuser<tkey, Tlogin, Trole, tclaim>: iuser<tkey> where Tlogin:identityuserlogin<tkey > Where trole:identityuserrole<tkey> where tclaim:identityuserclaim<tkey> { Public Identityuser () { This. Roles = new list<trole> (); } Public icollection<trole> Roles {virtual get; private set;} Other code omitted .... }

Identityrole

public Class Identityrole<tkey, tuserrole>: irole<tkey> where tuserrole:identityuserrole<tkey> {     public identityrole ()     {         this. Users = new list<tuserrole> ();    } &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;     public TKey Id {get; set;} &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;     public string Name {get; set;} &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;     public icollection<tuserrole> Users {virtual get; private set;} }

EF Configures 1-to-many relationships for Identityuser, Identityrole, and Identityuserrole, respectively.

public class Identitydbcontext:dbcontext { Public Identitydbcontext (): This ("DefaultConnection") { } protected override void Onmodelcreating (Dbmodelbuilder modelBuilder) { if (ModelBuilder = = null) { throw new ArgumentNullException ("ModelBuilder"); } entitytypeconfiguration<tuser> configuration = modelbuilder.entity<tuser> (). ToTable ("Aspnetusers"); Configuration. hasmany<tuserrole> (U = u.roles). Withrequired (). hasforeignkey<tkey> (ur = ur). USERID); Indexattribute Indexattribute = new Indexattribute ("Usernameindex") { IsUnique = True }; Configuration. Property ((Expression<func<tuser, string>>) (U = u.username)). IsRequired (). Hasmaxlength (0x100). Hascolumnannotation ("Index", New Indexannotation (Indexattribute)); Configuration. Property ((Expression<func<tuser, string>>) (U = u.email)). Hasmaxlength (0x100); Modelbuilder.entity<tuserrole> (). Haskey (r = new {UserId = R.userid, Roleid = R.roleid}). ToTable ("Aspnetuserroles"); entitytypeconfiguration<trole> Configuration2 = modelbuilder.entity<trole> (). ToTable ("Aspnetroles"); Indexattribute attribute2 = new Indexattribute ("Rolenameindex") { IsUnique = True }; Configuration2. Property ((Expression<func<trole, string>>) (r = r.name)). IsRequired (). Hasmaxlength (0x100). Hascolumnannotation ("Index", New Indexannotation (Attribute2)); Configuration2. Hasmany<tuserrole> (r = r.users). Withrequired (). hasforeignkey<tkey> (ur = ur). Roleid); } Public virtual idbset<trole> Roles {get; set;} Public virtual idbset<tuser> Users {get; set;} }

Imitate the above design, realize role-permission relation.

ASP. NET Identity Role-rights Management 4