`if_body_contains`

Route execution based on whether a context value contains a text pattern.

Parameters

source_keystringrequired: Context key to inspect (supports dotted paths, for example resp.body)
patternstringrequired: Pattern to search for
true_routestringdefault true: Route name when the pattern is found
false_routestringdefault false: Route name when the pattern is missing
case_sensitivebooldefault true: Case-sensitive matching
requiredbooldefault false: If true, missing source_key fails the node

Context Output

_route_{step_name} — selected route name
_contains_{step_name} — boolean match result

{step_name} defaults to "if_body_contains" unless the internal _step_name field is set.

Example

local flow = Flow.new("if_body_contains_example")

flow:step("seed", nodes.code({
    source = function(ctx)
        return {
            sample = ctx.sample or "Hello from api"
        }
    end
}))

flow:step("route", nodes.if_body_contains({
    source_key = "sample",
    pattern = "api",
    _step_name = "sample_check",
    true_route = "contains_api",
    false_route = "missing_api",
    case_sensitive = false
})):depends_on("seed")

flow:step("contains_api", nodes.log({
    message = "Pattern found in sample: ${ctx.sample}"
})):depends_on("route"):route("contains_api")

flow:step("missing_api", nodes.log({
    message = "Pattern not found"
})):depends_on("route"):route("missing_api")

return flow