Aranasoft.Cobweb.FluentMigrator.Extensions 3.1.0

The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved
.NET Standard 2.0 .NET Framework 4.6.1
dotnet add package Aranasoft.Cobweb.FluentMigrator.Extensions --version 3.1.0
NuGet\Install-Package Aranasoft.Cobweb.FluentMigrator.Extensions -Version 3.1.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Aranasoft.Cobweb.FluentMigrator.Extensions" Version="3.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Aranasoft.Cobweb.FluentMigrator.Extensions --version 3.1.0
#r "nuget: Aranasoft.Cobweb.FluentMigrator.Extensions, 3.1.0"
#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 Aranasoft.Cobweb.FluentMigrator.Extensions as a Cake Addin
#addin nuget:?package=Aranasoft.Cobweb.FluentMigrator.Extensions&version=3.1.0

// Install Aranasoft.Cobweb.FluentMigrator.Extensions as a Cake Tool
#tool nuget:?package=Aranasoft.Cobweb.FluentMigrator.Extensions&version=3.1.0

An alternative fluent interface for FluentMigrator.

Cobweb was created by Arana Software, a software agency in Las Vegas, Nevada.

Alternate Syntax for FluentMigrator

Aranasoft.Cobweb.FluentMigrator.Extensions provides an alternate syntax style for FluentMigrator, a database migration framework for .NET, using lambda expression syntax instead of method chains.

FluentMigrator's Method Chain Syntax

FluentMigrator employes a series of chained expression to build database schema.


Though this style is effective, some may find the syntax confusing, as there is no clear delineation between setting column properties and transitioning additional columns. Because this grouping can only be resolved through the context of method names, it is also impossible for code-formatting tools to organize and group applicable code.

Cobweb's Lambda Expression Syntax

Cobweb uses lambda expressions to define column properties.

      .WithColumn("FirstColumn", col => col.AsString().Nullable().WithDefaultValue("test"))
      .WithColumn("SecondColumn, col => col.AsString().NotNullable().WithDefaultValue("sample"));

Under the covers, Cobweb passes these lambda expressions to FluentMigrator's method chains. The lambda syntax will naturally group column properties and delineate from other columns. This grouping also enables code formating support from editor tooling.


Create Table: WithColumn

Syntax: WithColumn(string columnName, Func columnOptions)

      .WithColumn("FirstColumn", col => col.AsString().Nullable())
      .WithColumn("SecondColumn, col => col.AsString().NotNullable().WithDefaultValue("sample"));

Alter Table: AddColumn

Syntax: AddColumn(string columnName, Func columnOptions)

     .AddColumn("FirstColumn", col => col.AsInt32().Nullable())
     .AddColumn("SecondColumn", col => col.AsInt32().NotNullable().WithDefaultValue(5)));

Alter Table: AlterColumn

Syntax: AlterColumn(string columnName, Func columnOptions)

     .AlterColumn("FirstExistingColumn", col => col.AsInt32())
     .AlterColumn("SecondExistingColumn", col => col.AsInt32().NotNullable().WithDefaultValue(5)));

Create Index: OnColumn

Syntax: OnColumn(string columnName, Func columnOptions)

     .OnColumn("FirstColumn", col => col.Ascending())
     .OnColumn("SecondColumn", col => col.Descending());

Release Notes: 3.1.0 (2019-12-10)

Code Refactoring

  • namespaces: revise namespaces to Aranasoft.Cobweb (56aa10b)


  • namespaces: the root namespace has been changed from Cobweb to Aranasoft.Cobweb. For example, the MigrationExtensions class is now located within Aranasoft.Cobweb.FluentMigrator.Extensions. (56aa10b)
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 net7.0 net7.0-android net7.0-ios net7.0-maccatalyst net7.0-macos net7.0-tvos net7.0-windows
.NET Core netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard2.0 netstandard2.1
.NET Framework net461 net462 net463 net47 net471 net472 net48 net481
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
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Version Downloads Last updated
3.1.0 2,538 12/10/2019
2.1.0 358 12/10/2019
1.2.0 364 12/10/2019