ansible generate symfony parameters.yml

composer.json

{
    "require": {
        "symfony/yaml": "2.2"
    }
}

example.yml

- copy:
    remote_src: yes
    src: "/var/www/project/app/config/parameters.yml.dist"
    dest: "/var/www/project/app/config/parameters.yml"
    force: no
    owner: '{{ web_user }}'
    group: '{{ web_group }}'
    mode: 0660

- with_dict: '{{ parameters }}'
  lineinfile:
    dest: "/var/www/project/app/config/parameters.yml"
    line: '    {{ item.key }}: {{ lookup("pipe", role_path ~ "/inline_yaml.php " ~ item.value) }}'
    regexp: '^    {{ item.key }}:'

inline_yaml.php

#!/usr/bin/env php
<?php
/**
 * This is the same tool symfony uses to convert the parameter file values.
 * We can use this so symfony won't change our parameters again after we set them.
 */
use Symfony\Component\Yaml\Inline;

require_once __DIR__.'/../../vendor/autoload.php';

if ($argc !== 2) {
    echo 'Usage: inline_yaml.php INPUT';
    return 1;
}

$input = $argv[1];

// ansible booleans
switch (strtolower($input)) {
    case 'yes':
        $input = 'true';
        break;
    case 'no':
        $input = 'false';
        break;
}

$value = Inline::parse($input);

if (is_bool($value)) {
    $value = $value ? 'true' : 'false';
}

echo $value;