---
name: "Catmandu::Fix::Builder"
section: "3pm"
platform: "linux"
package: "libcatmandu-perl"
version: "1.2024-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Catmandu::Fix::Builder"
---

# Catmandu::Fix::Builder(3pm)

Base role for Catmandu fixes

## NAME

Catmandu::Fix::Builder - Base role for Catmandu fixes

## DESCRIPTION

This role expects a `"_build_fixer"` method that produces a coderef that transforms the data.  Used in combination with Catmandu::Path implementations, data manipulations can be described in a relatively high-level way. Most fixes shipped with Catmandu work this way and can be used as a starting point to write your own fixes.

## SYNOPSIS

```
    package Catmandu::Fix::my_fix;
    use Catmandu::Sane;
    use Moo;
    with 'Catmandu::Fix::Builder';
    sub _build_fixer {
        sub {
            my ($data) = @_;
            $data->{foo} = 'bar';
            $data;
        }
    }
```