Elasticsearch.net Tutorial MVC4 Book Management System (2) _ Practical skills

This example for you to share the MVC4 book management system of the production of tutorials for your reference, the specific contents are as follows

First Project Structure chart:

the relevant code for the model layer is as follows:
The Book.cs code is as follows:

public class book 
 { 
 [Key] 
 [databasegenerated (databasegeneratedoption.identity)] public 
 Guid Id {get ; Set 
 
 [MaxLength] 
 
 [Display (Name = "title")] public 
 string Title {get; set;} 
 
 [MaxLength (5000)] 
 [Display (Name = "Preface")] 
 public string Foreword {get; set;} 
 
 [Display (Name = "total pages")] 
 public int Pages {get; set;} 
 
 [Display (Name = "author")] 
 public string Author {get; set;} 
 } 

public class Appcontext:dbcontext 
 {public 
 appcontext () 
 { 
  
 } public 
 dbset<book> Books {get; set;} 
 

Related to ViewModels:

public class Searchviewmodel 
 {public 
 string Query {get; set;} 
 
 Public ienumerable<ihit<book>> Results {get; set;} 
 
 Public idictionary<string, suggest[]> suggestions {get; set;} 
 
 Public long Elapsed {get; set;} 
 
 } 

Next on the HomeController.cs and BooksController.cs code:

 public class Homecontroller:controller {private Searchservice _searchservice; 
 Public HomeController () {_searchservice = new searchservice (); 
 Public ActionResult Index () {return View (); Public ActionResult Search (string query, int page = 0, int pageSize = ten) {var result = _searchservice.find ( 
  Query, page, pageSize); 
 
  var suggestion = _searchservice.findphrasesuggestion (query, 0, 3); var ViewModel = new Searchviewmodel {query = query, Results = result. item1,elapsed = result. 
 
 
  ITEM2, suggestions = suggestion}; 
 Return View ("Index", ViewModel); } 
 
 } 

public class Bookscontroller:controller {private Appcontext db = new Appcontext (); Public ActionResult Index () {return View (db). 
 Books.tolist ()); Public ActionResult Details (Guid? id) {if (id = = NULL) {return new Httpstatuscoderesult (HttpStatusCode). 
  Badrequest); The book book = db. 
  Books.find (ID); 
  if (book = = null) {return httpnotfound (); 
 Return to View (book); 
 Public ActionResult Create () {return View (); [HttpPost] [Validateantiforgerytoken] public ActionResult Create ([Bind (include= Id,title,foreword,pages,autho R ")] book book) {if (modelstate.isvalid) {book. 
  Id = Guid.NewGuid (); Db. 
  Books.add (book); Db. 
 
  SaveChanges (); 
 
 
 
  Add book elasticsearch.elasticsearch.client.index<book>; 
  Return redirecttoaction ("Index"); 
 Return to View (book); Public ActionResult Edit (Guid? id) {if (id = = NULL) {return new Httpstatuscoderesult Httpstatuscode.bad RequeST); The book book = db. 
  Books.find (ID); 
  if (book = = null) {return httpnotfound (); 
 Return to View (book); [HttpPost] [Validateantiforgerytoken] public ActionResult Edit ([Bind (include= "Id,title,foreword,pages,author") ] Book book) {if (modelstate.isvalid) {db. Entry (book). 
  state = entitystate.modified; Db. 
  SaveChanges (); 
  Return redirecttoaction ("Index"); 
 Return to View (book); Public ActionResult Delete (Guid? id) {if (id = = NULL) {return new Httpstatuscoderesult httpstatuscode.b 
  Adrequest); The book book = db. 
  Books.find (ID); 
  if (book = = null) {return httpnotfound (); 
 Return to View (book); 
  [HttpPost, ActionName ("Delete")] [Validateantiforgerytoken] public actionresult deleteconfirmed (Guid ID) { Book book = db. 
  Books.find (ID); Db. 
  Books.remove (book); Db. 
  SaveChanges (); 
 Return redirecttoaction ("Index"); Public Jsonresult Reindex () {foreach (var. db). Books) { 
  Indexing book elasticsearch.elasticsearch.client.index<book> (book); 
 Return Json ("OK", jsonrequestbehavior.allowget); } protected override void Dispose (bool disposing) {if (disposing) {db. 
  Dispose (); Base. 
 Dispose (disposing); 
 } 
 }

Elasticsearch Auxiliary class:
First, Elasticsearch.cs.

public class Elasticsearch 
 { 
 private static elasticclient _client; 
 public static elasticclient Client 
 { 
  get 
  { 
  if (_client = = null) 
  { 
   //Connection configuration 
   var setting = New ConnectionSettings (Elasticsearchconfiguration.connection,elasticsearchconfiguration.defaultindex); 
   _client = new Elasticclient (setting); 
  } 
  return _client; 
  } 
 
 } 
  

ElasticsearchConfiguration.cs class

public static class Elasticsearchconfiguration 
 {public 
 static string Host {get {return ' http://localhost ';} Public 
 
 static Long Port {get {9200} 
 
 }} The public static Uri Connection the 
 {get 
  {new Uri (string). Format ("{0}:{1}", Host, Port)); 
 the public 
 
 static string Defaultindex 
 {get 
  {return "library" 
 }}}} 

SearchService.cs code:

public class Searchservice {public double Minscore {get {0.0005;}} 
 Highlight prefix public string Prehighlighttag {get {@ @ ' <strong> ';} 
 }//Highlight tag suffix public string Posthighlighttag {get {@ @ ' </strong> ';} 
 tuple< ienumerable<ihit<book>>,long> Find (string query, int page = 0, int pageSize = 10) {var result = Elasticsearch.elasticsearch.client.search<book> (s => S. From (page * pageSize). Size (pageSize). Minscore (Minscore). Highlight (H => H. Pretags (Prehighlighttag). Posttags (Posthighlighttag). Onfields (f => F.onfield (b => B.foreword), F => F.onfield (b => b.title))). Query (q => q.querystring (Qs => Qs.) Query (query). 
 
  Usedismax ())); return to new Tuple<ienumerable<ihit<book>> long> (result. Hits,result. 
 Elapsedmilliseconds); }//Lookup phrase suggested public idictionary<string, suggest[]> findphrasesuggestion (string phrase, int page = 0, int pageSize = 5) {var result = Elasticsearch.elasticsearch.client.search<book> (s =&gt ; S. From (page*pagesize). Size (pageSize). Suggestphrase ("Did-you-mean", PS => PS. Text (phrase). Onfield (F => f.foreword)). 
  
  Query (q => q.matchall ()); return result. 
 Suggest; Public ienumerable<ihit<book>> FindAll () {var = Elasticsearch.Elasticsearch.Client.Search 
  <Book> (S => s.allindices ()); return result. 
 Hits; 
 } 
 
 }

views View
Books folder:
Index.cshtml:

@model ienumerable<library.web.models.book> @{viewbag.title = "Index"; 
Layout = "~/views/shared/_layout.cshtml";  
 }  

Edit.cshtml:

@model Library.Web.Models.Book @{viewbag.title = "Edit"; 
Layout = "~/views/shared/_layout.cshtml"; }  

Details.cshtml:

@model Library.Web.Models.Book @{viewbag.title = "Details"; 
Layout = "~/views/shared/_layout.cshtml"; }  

Delete.cshtml:

@model Library.Web.Models.Book @{viewbag.title = "Delete"; 
Layout = "~/views/shared/_layout.cshtml"; }  

Create.cshtml:

@model Library.Web.Models.Book @{viewbag.title = "Create"; 
Layout = "~/views/shared/_layout.cshtml"; }  

Home->index.cshtml

@model Library.Web.ViewModels.SearchViewModel @{viewbag.title = "Elasticsearch"; <div class= "Jumbotron" >  

_layout.cshtml

<! DOCTYPE html>  

The result is as shown in figure:

List page

To create a page:

Search Results page:

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.