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about_PSDocs_Conventions.md

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PSDocs_Conventions

about_PSDocs_Conventions

SHORT DESCRIPTION

Describes PSDocs Conventions including how to use and author them.

LONG DESCRIPTION

PSDocs generates documents dynamically from input. When generating multiple documents it is often necessary to name or annotate them in a structured manner. Conventions achieve this by hooking into the pipeline to trigger custom actions defined in a script block.

Using conventions

A convention once defined can be included by using the -Convention parameter of Invoke-PSDocument. To use a convention specify the name of the convention by name. For example:

Invoke-PSDocument -Convention 'ExampleConvention';

If multiple conventions are specified in an array, all are executed in they are specified. As a result, the convention specified last may override state set by earlier conventions.

Defining conventions

To define a convention, add a Export-PSDocumentConvention block within a .Doc.ps1 file. When executed the .Doc.ps1 must be in an included path or module with -Path or -Module.

The Export-PSDocumentConvention block works similar to the Document block. Each convention must have a unique name. For example:

# Synopsis: An example convention.
Export-PSDocumentConvention 'ExampleConvention' {
    # Add code here
}

Begin Process End blocks

Conventions define three executable blocks Begin, Process, End similar to a PowerShell function. Each block is injected in a different part of the pipeline as follows:

  • Begin occurs before the document definition is called.
  • Process occurs directly after the document definition is called.
  • End occurs after all documents have been generated.

Convention block limitations:

  • Begin can not use document specific variables such as $Document.
  • End can not use automatic variables except $PSDocs.Output.

By default, the Process block used. For example:

# Synopsis: The default { } executes the process block
Export-PSDocumentConvention 'ExampleConvention' {
    # Process block
}

# Synopsis: With optional -Process parameter name
Export-PSDocumentConvention 'ExampleConvention' -Process {
    # Process block
}

To use Begin or End explicitly add these blocks. For example:

Export-PSDocumentConvention 'ExampleConvention' -Process {
    # Process block
} -Begin {
    # Begin block
} -End {
    # End block
}

Naming documents

Generated document output files are named based on InstanceName. To alter the InstanceName of a document use the InstanceName property.

Syntax:

$PSDocs.Document.InstanceName = value;

For example:

# Synopsis: An example naming convention.
Export-PSDocumentConvention 'TestNamingConvention1' {
    $PSDocs.Document.InstanceName = 'NewName';
}

Setting output path

Generated document output files are named based on OutputPath. To alter the OutputPath of a document use the OutputPath property.

Syntax:

$PSDocs.Document.OutputPath = value;

For example:

# Synopsis: An example naming convention.
Export-PSDocumentConvention 'TestNamingConvention1' {
    $newPath = Join-Path -Path $PSDocs.Document.OutputPath -ChildPath 'new';
    $PSDocs.Document.OutputPath = $newPath;
}

NOTE

An online version of this document is available at https://github.com/Microsoft/PSDocs/blob/main/docs/concepts/PSDocs/en-US/about_PSDocs_Conventions.md.

SEE ALSO

KEYWORDS

  • Conventions
  • PSDocs