Created
September 9, 2019 15:38
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Retrieve string content from JSON properties with supplied names (Kentico)
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using System.Collections.Generic; | |
using System.Linq; | |
using System.Text.RegularExpressions; | |
using CMS; | |
using CMS.DataEngine; | |
using CMS.DocumentEngine; | |
using Example.Linq; | |
using Example.Search; | |
using Newtonsoft.Json.Linq; | |
[assembly: RegisterModule(typeof(SearchModule))] | |
namespace Example.Search | |
{ | |
public class SearchModule : Module | |
{ | |
public SearchModule() | |
: base(nameof(SearchModule)) | |
{ | |
} | |
protected override void OnInit() | |
{ | |
base.OnInit(); | |
DocumentEvents.GetContent.Execute += OnGetPageContent; | |
} | |
private static void OnGetPageContent(object sender, DocumentSearchEventArgs e) | |
{ | |
// Example property names to be added to index | |
var indexableProperties = new[] {"heading", "html", "text"}; | |
var node = e.Node; | |
if (node == null) | |
{ | |
return; | |
} | |
var pagebuilderJson = node.GetStringValue("DocumentPageBuilderWidgets", string.Empty); | |
if (string.IsNullOrWhiteSpace(pagebuilderJson)) | |
{ | |
return; | |
} | |
var rootNode = JToken.Parse(pagebuilderJson); | |
var searchTokens = GetSearchTokens(rootNode, indexableProperties); | |
var pagebuilderContent = string.Join(" ", searchTokens.Select(RemoveTags)); | |
e.AddContent(pagebuilderContent); | |
} | |
private static IEnumerable<string> GetSearchTokens(JToken token, string[] propertyNames) | |
{ | |
var searchTokens = new Stack<JToken>(token.Children()); | |
while (searchTokens.Any()) | |
{ | |
var currentToken = searchTokens.Pop(); | |
if (currentToken.Type == JTokenType.Property) | |
{ | |
var currentProperty = (JProperty)currentToken; | |
var value = currentProperty.Value.ToString(); | |
if (propertyNames.Contains(currentProperty.Name) | |
&& !string.IsNullOrWhiteSpace(value)) | |
{ | |
yield return value; | |
} | |
} | |
foreach (var child in currentToken) | |
{ | |
searchTokens.Push(child); | |
} | |
} | |
} | |
// Remove HTML from rich text | |
private static string RemoveTags(string input) | |
{ | |
return input == null | |
? string.Empty | |
: Regex.Replace(input, "<[^>]+>", " ") | |
.Replace("\n", " "); | |
} | |
} | |
} |
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