ASP. NET MVC4 uses MongoDB to create album management, mvc4mongodb

ASP. NET MVC4 uses MongoDB to create album management, mvc4mongodb

ASP. NET MVC4 use MongoDB to create an album to manage instance sharing

TIPS:1. Convert the Image to Base64 and save it to the mongodb field.
2. Data Models are nested associations

First defineModel 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 other)    {      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; }    public 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 { return Pictures.Count; }    }    public Photo this[int index]    {      get { return Pictures[index]; }      set { Pictures[index] = value; }    }    public IAlbumIterable GetIterator()    {      return new AlbumIterator(this);    }  }

Services LayerAnd ServerPathFinder. cs code is 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(ConfigurationManager.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);    }    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>.Filter;      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)        throw new 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));    }  }

AlbumController. csThe Code is as follows:

Public class AlbumController: Controller {alert d = new alert albumummer ("test", "albums"); [HttpPost] public ActionResult AlbumPreview (Photo model, HttpPostedFileBase file, string albumName, string delete, string 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 {your D. deletePhotoFromAlbum (albumName, phot); foreach (var error in ModelState. values) {error. errors. clear () ;}} ViewBag. albumTitle = albumName; ViewBag. photoList = mongod. getP IcturesByAlbumName (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; required D. createAlbum (model);} var albums = mongod. getAlbumsByUserName (HttpContext. user. identity. name); ViewBag. albums = albums; return View ();} public ActionResult Create () {var albums = Example D. getAlbumsByUserName (HttpContext. user. identity. name); ViewBag. albums = albums; return View ();}}

Some view views:
Create. cshtml

@ {ViewBag. title = "Create" ;}< h2> my album 
Project running result:
Create an album on the homepage:


Image example in car album. You can add or delete images.


Image example in QQ photo album


Mongodb data storage structure:


The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.