Visual examples

Preserve types and resolve nested values

A placeholder occupying the entire value preserves its type: numbers and booleans reach the API as numbers and booleans.

from paylo import render_template

body = render_template(
    {"name": "{{customer.name}}", "active": "{{active}}", "count": "{{count}}"},
    {"customer": {"name": "Ana"}, "active": True, "count": 3},
)
assert body == {"name": "Ana", "active": True, "count": 3}

{"name": "Ana", "active": true, "count": 3}

Create a payload from Robot Framework

Reuse the dictionary from each iteration; Paylo prepares the payload and RequestsLibrary sends the request.

*** Settings ***
Library    Paylo

*** Test Cases ***
Create Payload From Data
    VAR    &{values}    name=Ana    active=${True}    quantity=${3}
    ${body}=    Render JSON    {"name":"{{name}}","active":"{{active}}","quantity":"{{quantity}}"}    ${values}
    Should Be Equal    ${body}[active]    ${True}
    Should Be Equal As Integers    ${body}[quantity]    3

Detect missing variables

A missing variable raises an explicit error before sending a request.

from paylo import render_template, MissingVariableError

try:
    render_template({"email": "{{email}}"}, {})
except MissingVariableError as error:
    print(error)

Result screenshot

This capture is generated by the Python Paylo engine from the typed, nested-value example above. It shows the template, iteration data and resulting request body; it is independent of the interactive demo.

Interactive demo

The demo follows the documentation language and lets you experiment with values. It is a JavaScript simulation; the examples above execute the Python library.