ENH: support float format about nim-mustache HOT 4 CLOSED

cheers. I'll do that. thank you.

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one option could be to have a ctx["name_raw"] which contains the float value and a ctx["name"] that contains a lambda that formats ctx["name_raw"] as a string and in the way you want it.

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@brentp Nim-mustache does not process $ output.

You can wrap up your float values into a customized type and control the strformat leveraging by the castValue API like below:

# File: issue_16.nim

import mustache, strformat

type HumanReadableFloat = object
  vFloat*: float

proc castValue(value: HumanReadableFloat): Value =
  Value(kind: vkString, vString: &"{value.vFloat:.2f}")

var c = newContext()
c["raw_float"] = 1.234903242343234534
c["readable_float"] = HumanReadableFloat(vFloat: 1.234903242343234534)

let s = """
{{ raw_float }}
{{ readable_float }}
"""

echo(s.render(c))

Output:

1.234903242343234
1.23

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Please see how to use castValue doc here.

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