asp.net MVC4 use MongoDB to make album Management _ Practical Skills

asp.net MVC4 use MongoDB to create album management instance sharing

TIPS: 1.Image to Base64 save to MongoDB field
2. The data model is a nested association

First define the model layer:

 public class Photo:iequatable<photo> {[Required] public string Photoname {get; set;}


  [Required] public string photodescription {get; set;}


  public string Serverpath {get; set;}
   Public Photo () {} public Photo (string name, String desc) {photoname = name;
  Photodescription = desc; public bool Equals (Photo) {return string. Equals (Photoname, other.
  Photoname);
  } public interface Ialbumiterable {bool Hasnext ();
  Photo current ();
 Photo Next ();
 Public interface Iphotosaggregable {ialbumiterable getiterator ();
  public class Albumiterator:ialbumiterable {private Album collection;


  private int count;
  Public Albumiterator (Album Album) {collection = Album; Public Photo Current () {if (Count < collection).
   Count) return collection[count++];
  else throw new IndexOutOfRangeException (); public bool Hasnext () {if (Count < collection).
    COUNT-1)return true;
  else return false;
   Public Photo Next () {if (Hasnext ()) return collection[++count];
  else throw new IndexOutOfRangeException ();


  } public class Album:iphotosaggregable {[Bsonid] public ObjectId Id {get; set;}


  [Required] public string Name {get; set;}


  [Required] public string Description {get; set;}
  public string Owner {get; set;}


  Public Photo Titlephoto {get; set;} [Bsondatetimeoptions (Kind = datetimekind.local,representation =bsontype.datetime)] public DateTime creationtime {get; Set


  Ilist<photo> Pictures {get; set;} Public Album () {Pictures = new list<photo> (); Titlephoto = new Photo ();
   Public Album (string name, string owner, Photo pic) {name = name;
   Owner = owner;
   Titlephoto = pic;
   Pictures = new list<photo> ();
  Titlephoto = new Photo (); public bool InsertPicture (Photo pic) {if (! Pictures.contains (pic)) {Pictures.Add (pic);
   return true;
  else throw new ArgumentException (); public bool Insertpictures (list<photo> photos) {foreach (var Photo in photos) {if (!)
    Pictures.contains (photo)) {pictures.add (photo);
   else throw new ArgumentException ();
  return true;
    public bool RemovePicture (Photo pic) {pictures.remove (pic);
  return true;
  public int Count {get {pictures.count;}
   Public Photo This[int Index] {get {return pictures[index];}
  set {Pictures[index] = value;}
  Public ialbumiterable Getiterator () {Return to New albumiterator (this);

 }
 }

The MongoAlbumPerformer.cs and ServerPathFinder.cs code for the

 services layer are as follows:  

 public class Mongoalbumperformer {protected static imongoclient client;
  protected static Imongodatabase database;
  private static imongocollection<album> collection;

  private string CollectionName; Public Mongoalbumperformer (String databaseName, String collectionname) {client = new Mongoclient (Configurationma Nager. connectionstrings["MongoDB"].
   ConnectionString); Database = client.
   Getdatabase (DatabaseName);
   This.collectionname = CollectionName; Collection = database.
  Getcollection<album> (CollectionName, new mongocollectionsettings {Assignidoninsert = true});
   } public void Setcollection (string collectionname) {this.collectionname = CollectionName; Collection = database.
  Getcollection<album> (CollectionName); The public void Createalbum (Album Album) {var document = new Album {Name = Album. Name, Owner = HttpContext.Current.User.Identity.Name, Description = album. Description, CreationTime = DATETIME.Now, Titlephoto = album. Titlephoto, Pictures = album.

   Pictures}; Collection.
  Insertone (document); Public list<album> Getalbumsbyusername (string username) {var projection = Builders<album>. Projection. Include (a => a.name). Include (a => a.description). Include (a => a.titlephoto).

   Include (A=>a.creationtime); var result = collection. Find (a => A.owner = = HttpContext.Current.User.Identity.Name). Project<album> (projection).

   ToList ();
  return result; Public Album Getpicturesbyalbumname (string albumname) {var projection = Builders<album>. Projection.

   Include (a => a.pictures); var result = collection. Find (a => A.owner = = HttpContext.Current.User.Identity.Name & a.name = = Albumname). Project<album> (projection).

   FirstOrDefault ();
  return result; } public void Updatealbumaddphoto (string albumname, Photo Photo) {var builder = Builders<album>.Filter; var filter = Builder. Eq (f => f.name, Albumname) & Builder.
   Eq (f => f.owner, HttpContext.Current.User.Identity.Name); var result = collection. Find (Filter).

   FirstOrDefault ();
   if (result = = null) throw new ArgumentException ("No Album of supplied name: {0}", albumname); else {var picture = new Photo {photoname = Photo. Photoname, photodescription = photo. Photodescription, Serverpath = photo.

      Serverpath,}; var update = Builders<album>.
      Update.push (a => a.pictures, picture); Collection.
   Updateone (filter, update, new UpdateOptions {isupsert=true}); } public void Deletephotofromalbum (string albumname, String photoname) {var builder = Builders<album>.f
   Ilter; var filter = Builder. Eq (f => f.name, Albumname) & Builder.
   Eq (f => f.owner, HttpContext.Current.User.Identity.Name); var result = collection. Find (Filter).

   Singleordefault (); if (result = = null) throwNew ArgumentException ("No Album of supplied name: {0}", albumname); else {var update = Builders<album>. Update. Pullfilter (a => a.pictures, Builders<photo>
    Filter.eq (P => p.photoname, photoname)); Long Count = collection. Updateone (filter, update).
   Matchedcount; }}public class Serverpathfinder {public string getbase64imagestring (HttpPostedFileBase file) {string mime = Regex.match (file. ContentType, @ "(? <=image/) \w+").
   Value; byte[] bytes = new Byte[file.
   ContentLength]; File. Inputstream.read (bytes, 0, file.
   ContentLength); return string.
  Format ("Data:image/{0};base64,{1}", mime, convert.tobase64string (bytes));

 }
 }

The

AlbumController.cs code is as follows:  

 public class Albumcontroller:controller {Mongoalbumperformer Mongod = new Mongoalbumperformer ("Test", "albums"); [HttpPost] public actionresult Albumpreview (Photo model, httppostedfilebase file, string albumname, string delete, str ing phot {if (delete = = "false") {if (file!= null) {if (!file). Contenttype.startswith ("image") {modelstate.addmodelerror ("file"), "select the correct format photo!"
     ");
      else {Serverpathfinder finder = new Serverpathfinder (); Model. Serverpath = Finder.
     getbase64imagestring (file); } if (Modelstate.isvalid) {Mongod.
      Updatealbumaddphoto (albumname, model);
     Modelstate.clear (); }} else {Mongod.
    Deletephotofromalbum (Albumname, phot); foreach (var error in modelstate.values) {error.
    Errors.clear ();
   } viewbag.albumtitle = Albumname; Viewbag.photolist = Mongod. Getpicturesbyalbumname (Albumname).

   Pictures;
  return View (); } public AcTionresult Albumpreview (String Name) {var album = Mongod.
   Getpicturesbyalbumname (Name);
   Viewbag.albumtitle = Name; Viewbag.photolist = album.

   Pictures;
  return View (); [HttpPost] public actionresult Create (Album model, httppostedfilebase file) {if (!file). Contenttype.startswith ("image") {modelstate.addmodelerror ("file"), "select the correct format photo!"
   ");
    else {Serverpathfinder finder = new Serverpathfinder (); Model. Titlephoto.serverpath = Finder.    
   getbase64imagestring (file); } if (Modelstate.isvalid) {model.
    Owner = HttpContext.User.Identity.Name; Mongod.
   Createalbum (model); } var albums = Mongod.
   Getalbumsbyusername (HttpContext.User.Identity.Name);

   Viewbag.albums = albums;
  return View (); Public ActionResult Create () {var albums = Mongod.
   Getalbumsbyusername (HttpContext.User.Identity.Name);
   Viewbag.albums = albums;
  return View (); 

 }
 }

Partial View view:
 create.cshtml 

@{viewbag.title = "Create";}  

Run project results as shown in figure:

Homepage Create album:

Examples of pictures under the "Car" album, you can add pictures, delete pictures

Examples of pictures under QQ album

MongoDB data Storage Structure chart:

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