Orchard Core Content Queries - Prompt Templates

Query Content Items

You are an Orchard Core expert. Generate code for querying content items using YesSql indexes and IContentManager.

Guidelines

• Orchard Core uses YesSql as its document database abstraction over SQL.
• ISession is the primary interface for querying YesSql indexes.
• ContentItemIndex is the built-in index for all content items.
• Custom indexes can be created for frequently queried fields.
• IContentManager provides higher-level content operations (Get, New, Create, Publish).
• Always use async/await patterns for database queries.
• Use .With<IndexType>() to join against specific indexes.
• Keep YesSql predicates translatable: use comparisons, null checks, and boolean && / ||, but avoid ternaries and other conditional expressions inside query lambdas.
• If null and non-null rows need different query logic, split the query into multiple supported YesSql expressions and combine the results in memory.
• Use literal column names in CreateMapIndexTableAsync() and AlterIndexTableAsync() for custom YesSql migrations; do not use nameof(...).
• MapIndex tables already include the DocumentId column automatically, so do not add it manually in the migration.
• Always seal classes.

Querying with ContentItemIndex

using OrchardCore.ContentManagement;
using OrchardCore.ContentManagement.Records;
using YesSql;

public sealed class ContentQueryService
{
    private readonly ISession _session;

    public ContentQueryService(ISession session)
    {
        _session = session;
    }

    // Query by content type
    public async Task<IEnumerable<ContentItem>> GetByTypeAsync(string contentType)
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>(x => x.ContentType == contentType && x.Published)
            .ListAsync();
    }

    // Query by content type with paging
    public async Task<IEnumerable<ContentItem>> GetPagedAsync(string contentType, int page, int pageSize)
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>(x => x.ContentType == contentType && x.Published)
            .OrderByDescending(x => x.CreatedUtc)
            .Skip((page - 1) * pageSize)
            .Take(pageSize)
            .ListAsync();
    }

    // Query by display text
    public async Task<ContentItem> GetByDisplayTextAsync(string displayText)
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>(x => x.DisplayText == displayText && x.Published)
            .FirstOrDefaultAsync();
    }

    // Count content items
    public async Task<int> CountByTypeAsync(string contentType)
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>(x => x.ContentType == contentType && x.Published)
            .CountAsync();
    }

    // Query latest versions (including drafts)
    public async Task<IEnumerable<ContentItem>> GetLatestAsync(string contentType)
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>(x => x.ContentType == contentType && x.Latest)
            .ListAsync();
    }
}

ContentItemIndex Fields Reference

The built-in ContentItemIndex has these fields:

• ContentItemId — Unique content item identifier.
• ContentItemVersionId — Version-specific identifier.
• ContentType — The content type name.
• DisplayText — The display text (usually from TitlePart).
• Published — Whether this version is the published one.
• Latest — Whether this version is the latest one.
• CreatedUtc — When the content item was created.
• ModifiedUtc — When the content item was last modified.
• PublishedUtc — When the content item was published.
• Owner — The owner user ID.
• Author — The author user name.

Creating a Custom YesSql Index

using OrchardCore.ContentManagement;
using YesSql.Indexes;

public sealed class {{PartName}}Index : MapIndex
{
    public string ContentItemId { get; set; }
    public string {{PropertyName}} { get; set; }
    public bool Published { get; set; }
}

public sealed class {{PartName}}IndexProvider : IndexProvider<ContentItem>
{
    public override void Describe(DescribeContext<ContentItem> context)
    {
        context.For<{{PartName}}Index>()
            .When(contentItem => contentItem.Has<{{PartName}}>())
            .Map(contentItem =>
            {
                if (!contentItem.TryGet<{{PartName}}>(out var part))
                {
                    return null;
                }

                return new {{PartName}}Index
                {
                    ContentItemId = contentItem.ContentItemId,
                    {{PropertyName}} = part.{{PropertyName}},
                    Published = contentItem.Published
                };
            });
    }
}

Registering Custom Index and Migration

using OrchardCore.Data.Migration;
using YesSql.Sql;

public sealed class Migrations : DataMigration
{
    public async Task<int> CreateAsync()
    {
        await SchemaBuilder.CreateMapIndexTableAsync<{{PartName}}Index>(table => table
            .Column<string>("ContentItemId", col => col.WithLength(26))
            .Column<string>("{{PropertyName}}", col => col.WithLength(256))
            .Column<bool>("Published")
        );

        await SchemaBuilder.AlterIndexTableAsync<{{PartName}}Index>(table => table
            .CreateIndex("IDX_{{PartName}}Index_{{PropertyName}}",
                "{{PropertyName}}",
                "Published"))
        );

        return 1;
    }
}

Registering Index Provider in Startup

using OrchardCore.Data.Migration;
using YesSql.Indexes;

public sealed class Startup : StartupBase
{
    public override void ConfigureServices(IServiceCollection services)
    {
        services.AddIndexProvider<{{PartName}}IndexProvider>();
        services.AddScoped<IDataMigration, Migrations>();
    }
}

Querying with Custom Index

public sealed class {{PartName}}QueryService
{
    private readonly ISession _session;

    public {{PartName}}QueryService(ISession session)
    {
        _session = session;
    }

    public async Task<IEnumerable<ContentItem>> GetByPropertyAsync(string value)
    {
        return await _session
            .Query<ContentItem, {{PartName}}Index>(x => x.{{PropertyName}} == value && x.Published)
            .ListAsync();
    }
}

Using IContentManager

using OrchardCore.ContentManagement;

public sealed class ContentService
{
    private readonly IContentManager _contentManager;

    public ContentService(IContentManager contentManager)
    {
        _contentManager = contentManager;
    }

    // Get by ID
    public async Task<ContentItem> GetByIdAsync(string contentItemId)
    {
        return await _contentManager.GetAsync(contentItemId);
    }

    // Get specific version
    public async Task<ContentItem> GetVersionAsync(string contentItemId, string versionId)
    {
        return await _contentManager.GetVersionAsync(versionId);
    }

    // Create new content item
    public async Task<ContentItem> CreateAsync(string contentType)
    {
        var contentItem = await _contentManager.NewAsync(contentType);
        await _contentManager.CreateAsync(contentItem, VersionOptions.Draft);
        return contentItem;
    }

    // Publish a content item
    public async Task PublishAsync(ContentItem contentItem)
    {
        await _contentManager.PublishAsync(contentItem);
    }

    // Update content item
    public async Task UpdateAsync(ContentItem contentItem)
    {
        await _contentManager.UpdateAsync(contentItem);
    }

    // Remove content item
    public async Task RemoveAsync(ContentItem contentItem)
    {
        await _contentManager.RemoveAsync(contentItem);
    }
}

Querying with SQL Directly (Advanced)

For complex queries that can't be expressed with YesSql indexes:

using YesSql;

public sealed class AdvancedQueryService
{
    private readonly ISession _session;

    public AdvancedQueryService(ISession session)
    {
        _session = session;
    }

    public async Task<IEnumerable<ContentItem>> QueryWithSqlAsync()
    {
        return await _session
            .Query<ContentItem, ContentItemIndex>()
            .Where(x => x.Published && x.ContentType == "Article")
            .OrderByDescending(x => x.PublishedUtc)
            .Take(10)
            .ListAsync();
    }
}