orchardcore-data-migrations

Development

Skill for creating data migrations in Orchard Core. Covers content type migrations, YesSql index table creation, schema alterations, data seeding, and migration versioning patterns.

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Orchard Core Data Migrations - Prompt Templates

Create Data Migrations

You are an Orchard Core expert. Generate data migration code for Orchard Core modules.

Guidelines

Data migrations inherit from DataMigration.
Migrations define content types, parts, fields, and database indexes.
Use CreateAsync() for initial migration, UpdateFrom1Async(), UpdateFrom2Async() for incremental updates.
Register migrations in Startup.cs using services.AddScoped<IDataMigration, Migrations>().
IContentDefinitionManager is used to define content types and parts.
SchemaBuilder is used to create and alter YesSql index tables.
Always seal classes.

Basic Migration with Content Type

using OrchardCore.ContentManagement.Metadata;
using OrchardCore.ContentManagement.Metadata.Settings;
using OrchardCore.Data.Migration;

public sealed class Migrations : DataMigration
{
    private readonly IContentDefinitionManager _contentDefinitionManager;

    public Migrations(IContentDefinitionManager contentDefinitionManager)
    {
        _contentDefinitionManager = contentDefinitionManager;
    }

    public async Task<int> CreateAsync()
    {
        await _contentDefinitionManager.AlterTypeDefinitionAsync("{{ContentType}}", type => type
            .DisplayedAs("{{DisplayName}}")
            .Creatable()
            .Listable()
            .Draftable()
            .Versionable()
            .WithPart("TitlePart", part => part.WithPosition("0"))
            .WithPart("AutoroutePart", part => part
                .WithPosition("1")
                .WithSettings(new AutoroutePartSettings
                {
                    AllowCustomPath = true,
                    Pattern = "{{ ContentItem | display_text | slugify }}"
                })
            )
            .WithPart("HtmlBodyPart", part => part
                .WithPosition("2")
                .WithEditor("Wysiwyg")
            )
            .WithPart("{{ContentType}}Part", part => part.WithPosition("3"))
        );

        return 1;
    }
}

Migration with Custom Content Part and Fields

public sealed class Migrations : DataMigration
{
    private readonly IContentDefinitionManager _contentDefinitionManager;

    public Migrations(IContentDefinitionManager contentDefinitionManager)
    {
        _contentDefinitionManager = contentDefinitionManager;
    }

    public async Task<int> CreateAsync()
    {
        // Define the custom part with fields
        await _contentDefinitionManager.AlterPartDefinitionAsync("{{PartName}}", part => part
            .WithField("{{FieldName}}", field => field
                .OfType("TextField")
                .WithDisplayName("{{FieldDisplayName}}")
                .WithPosition("0")
                .WithSettings(new TextFieldSettings
                {
                    Required = true,
                    Hint = "{{FieldHint}}"
                })
            )
            .WithField("Description", field => field
                .OfType("TextField")
                .WithDisplayName("Description")
                .WithPosition("1")
                .WithEditor("TextArea")
            )
            .WithField("Image", field => field
                .OfType("MediaField")
                .WithDisplayName("Image")
                .WithPosition("2")
            )
        );

        // Define the content type with the custom part
        await _contentDefinitionManager.AlterTypeDefinitionAsync("{{ContentType}}", type => type
            .DisplayedAs("{{DisplayName}}")
            .Creatable()
            .Listable()
            .WithPart("TitlePart", part => part.WithPosition("0"))
            .WithPart("{{PartName}}", part => part.WithPosition("1"))
        );

        return 1;
    }
}

Migration with YesSql Index Table

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

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

        await SchemaBuilder.AlterIndexTableAsync<{{IndexName}}>(table => table
            .CreateIndex(
                "IDX_{{IndexName}}_{{PropertyName}}",
                nameof({{IndexName}}.{{PropertyName}}),
                nameof({{IndexName}}.Published)
            )
        );

        return 1;
    }
}

Incremental Migration (UpdateFrom)

public sealed class Migrations : DataMigration
{
    private readonly IContentDefinitionManager _contentDefinitionManager;

    public Migrations(IContentDefinitionManager contentDefinitionManager)
    {
        _contentDefinitionManager = contentDefinitionManager;
    }

    public async Task<int> CreateAsync()
    {
        // Initial migration
        await _contentDefinitionManager.AlterTypeDefinitionAsync("{{ContentType}}", type => type
            .DisplayedAs("{{DisplayName}}")
            .Creatable()
            .Listable()
            .WithPart("TitlePart")
        );

        return 1;
    }

    public async Task<int> UpdateFrom1Async()
    {
        // Add a new field in version 2
        await _contentDefinitionManager.AlterPartDefinitionAsync("{{ContentType}}", part => part
            .WithField("Category", field => field
                .OfType("TextField")
                .WithDisplayName("Category")
                .WithPosition("2")
            )
        );

        return 2;
    }

    public async Task<int> UpdateFrom2Async()
    {
        // Add an index table in version 3
        await SchemaBuilder.CreateMapIndexTableAsync<{{ContentType}}Index>(table => table
            .Column<string>("ContentItemId", col => col.WithLength(26))
            .Column<string>("Category", col => col.WithLength(256))
            .Column<bool>("Published")
        );

        return 3;
    }
}

Registering Migrations and Indexes

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

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

Uninstall Migration

Handle cleanup when a feature is disabled:

public sealed class Migrations : DataMigration
{
    public async Task UninstallAsync()
    {
        await SchemaBuilder.DropMapIndexTableAsync<{{IndexName}}>();
    }
}