Our.Umbraco.SearchSpellCheck 1.0.0-beta.6

.NET 5.0 .NET Framework 4.7.2
This is a prerelease version of Our.Umbraco.SearchSpellCheck.
There is a newer prerelease version of this package available.
See the version list below for details.
Install-Package Our.Umbraco.SearchSpellCheck -Version 1.0.0-beta.6
dotnet add package Our.Umbraco.SearchSpellCheck --version 1.0.0-beta.6
<PackageReference Include="Our.Umbraco.SearchSpellCheck" Version="1.0.0-beta.6" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Our.Umbraco.SearchSpellCheck --version 1.0.0-beta.6
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Our.Umbraco.SearchSpellCheck, 1.0.0-beta.6"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Our.Umbraco.SearchSpellCheck as a Cake Addin
#addin nuget:?package=Our.Umbraco.SearchSpellCheck&version=1.0.0-beta.6&prerelease

// Install Our.Umbraco.SearchSpellCheck as a Cake Tool
#tool nuget:?package=Our.Umbraco.SearchSpellCheck&version=1.0.0-beta.6&prerelease
The NuGet Team does not provide support for this client. Please contact its maintainers for support.


A Lucene.Net-based spell checker for Umbraco v8 and v9.

NuGet release Build Status

This project wouldn't exist without Lars-Erik Aabech who created a v7 version of this, which a lot of the work is based on.

How it works

alt text

On startup, this extension will index all the content in your site based on the IndexedFields settings. On every search, the extension will check the multi-word search term against the index and suggest the most likely words to the user.


At present, the only way to install this is to use NuGet. You can find the package on NuGet.org and install it using the Package Manager UI in Visual Studio.



In v9 you'll need to use the appSettings.json file instead of the web.config file.

    "SearchSpellCheck": {
        "IndexName": "SpellCheckIndex",
        "IndexedFields": [ "nodeName" ],
        "BuildOnStartup": true,
        "RebuildOnPublish": true,
        "AutoRebuildIndex": false,
        "AutoRebuildDelay": 5,
        "AutoRebuildRepeat": 30


When the package is installed, new keys will be added to the appSettings section of your web.config:

<add key="Our.Umbraco.SearchSpellCheck.IndexName" value="SpellCheckIndex" />
<add key="Our.Umbraco.SearchSpellCheck.IndexedFields" value="nodeName" />
<add key="Our.Umbraco.SearchSpellCheck.BuildOnStartup" value="true" />
<add key="Our.Umbraco.SearchSpellCheck.RebuildOnPublish" value="true" />
<add key="Our.Umbraco.SearchSpellCheck.AutoRebuildIndex" value="false" />
<add key="Our.Umbraco.SearchSpellCheck.AutoRebuildDelay" value="5" />
<add key="Our.Umbraco.SearchSpellCheck.AutoRebuildRepeat" value="30" />


IndexName: The name of the Lucene index to be created. This is the also name of the folder in the App_Data folder that contains the Lucene index. By default it is SpellCheckIndex but this can be changed if you need a different naming convention.

IndexedFields: The alias(es) of fields to be indexed. This is a comma-separated list of field names. By default only the nodeName field is indexed. Currently, there is support for text, Grid Layout and Block List Editor fields.

BuildOnStartup: Boolean indicating if you want the index to be populated on startup. Defaults to true.

RebuildOnPublish: Boolean indicating if you want the index to be populated on content being saved and published successfully. Defaults to true.

AutoRebuildIndex: Boolean indicating if you want a background process to run to rebuild the index. Defaults to false.

AutoRebuildDelay: Number of minutes you want to delay the background process from starting. Defaults to 5 minutes.

AutoRebuildRepeat: Number of minutes you want the scheduled background process to run. Defaults to 30 minutes.



The package enables a SuggestionService to be injected in v9:

private readonly IExamineManager _examineManager;
private readonly ISuggestionService _suggestionService;

public SearchService(IExamineManager examineManager, ISuggestionService suggestionService)
    _examineManager = examineManager;
    _suggestionService = suggestionService;

public string GetSuggestions(string searchTerm)
    return _suggestionService.GetSuggestion(searchTerm, accuracy: 0.25f);

Which could in turn be returned in a view component:

if (model.TotalResults == 0)
    model.SpellCheck = _searchService.GetSuggestions(model.SearchTerm);

And then returned in the view:

@if (!string.IsNullOrEmpty(Model.SpellCheck))
    <p>Did you mean <a href="?s=@Model.SpellCheck"><em>@Model.SpellCheck</em></a>?</p>


The package is a single class called Our.Umbraco.SearchSpellCheck.Suggestions.

Within a SearchService, you could use the Suggestions class to get suggestions for a given word:

public string GetSuggestion(string searchTerm)
    return Suggestions.GetSuggestion(searchTerm);

This could then be returned within a ViewModel:

if (!string.IsNullOrEmpty(viewModel.SearchTerm))
    viewModel.SpellCheck = _searchService.GetSuggestion(viewModel.SearchTerm);

And then in your view:

@if (Model.TotalResults == 0 && !string.IsNullOrEmpty(Model.SpellCheck))
    @:Did you mean <em><a href="?q=@Model.SpellCheck">@Model.SpellCheck</a></em>?


Copyright © 2021 Rick Butterfield, and other contributors

Licensed under the MIT License.

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Framework net472 net48
Compatible target framework(s)
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NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
1.0.0-beta.11 877 12/3/2021
1.0.0-beta.10 2,893 11/25/2021
1.0.0-beta.9 2,522 11/25/2021
1.0.0-beta.8 3,557 11/25/2021
1.0.0-beta.7 99 11/22/2021
1.0.0-beta.6 78 11/22/2021
1.0.0-beta.5 90 11/19/2021
1.0.0-beta.4 111 11/19/2021
1.0.0-beta.3 85 11/19/2021