Templating Node | Vellum

vellum.workflows.nodes.TemplatingNode

Used to render text templates using Jinja2 syntax

template

strRequired

The Jinja2 template to render

inputs

EntityInputsInterfaceRequired

The values to substitute into the template for the specified variables.

result

_OutputType

The rendered template in the appropriate type as specified by the type specified in the Templating Node subclass definition.

1	from vellum.workflows.nodes import TemplatingNode
2
3	# Notice `str` is used to specify the output type of the Templating Node
4	# ... in fact, `str` is also the default output type for the Templating Node, so this could be omitted
5	class MyTemplatingNode(TemplatingNode[BaseState, str]):
6	template = "The weather in {{ city }} is {{ weather }}."
7
8	inputs = {
9	"city": Inputs.city,
10	"weather": Inputs.weather,
11	}

1	MyTemplatingNode.Outputs(
2	result="""
3	Dear Jane Doe,
4
5	Thank you for your 5 years of service at Acme Corp.
6	Your dedication to Engineering has been invaluable.
7
8	Best regards,
9	HR Team
10	"""
11	)

1	from vellum.workflows.nodes import TemplatingNode
2
3	# Notice `str` is used to specify the output type of the Templating Node
4	# ... in fact, `str` is also the default output type for the Templating Node, so this could be omitted
5	class MyTemplatingNode(TemplatingNode[BaseState, str]):
6	template = "The weather in {{ city }} is {{ weather }}."
7
8	inputs = {
9	"city": Inputs.city,
10	"weather": Inputs.weather,
11	}

1	MyTemplatingNode.Outputs(
2	result="""
3	Dear Jane Doe,
4
5	Thank you for your 5 years of service at Acme Corp.
6	Your dedication to Engineering has been invaluable.
7
8	Best regards,
9	HR Team
10	"""
11	)