Add dict filter (#2171) (#2205)

* Add dict and list_to_dict filters.

* Remove list_to_dict filter.

* Add myself as maintainer.

(cherry picked from commit b6ae47c455)

Co-authored-by: Felix Fontein <felix@fontein.de>

.github/BOTMETA.yml

@@ -53,6 +53,8 @@ files:
   $doc_fragments/xenserver.py:
     maintainers: bvitnik
     labels: xenserver
+  $filters/dict.py:
+    maintainers: felixfontein
   $filters/dict_kv.py:
     maintainers: giner
   $filters/jc.py:

changelogs/fragments/dict-filter.yml

@@ -0,0 +1,3 @@
+add plugin.filter:
+  - name: dict
+    description: "The ``dict`` function as a filter: converts a list of tuples to a dictionary"

plugins/filter/dict.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2021, Felix Fontein <felix@fontein.de>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+
+def dict_filter(sequence):
+    '''Convert a list of tuples to a dictionary.
+
+    Example: ``[[1, 2], ['a', 'b']] | community.general.dict`` results in ``{1: 2, 'a': 'b'}``
+    '''
+    return dict(sequence)
+
+
+class FilterModule(object):
+    '''Ansible jinja2 filters'''
+
+    def filters(self):
+        return {
+            'dict': dict_filter,
+        }

tests/integration/targets/filter_dict/aliases

@@ -0,0 +1,2 @@
+shippable/posix/group3
+skip/python2.6  # filters are controller only, and we no longer support Python 2.6 on the controller

tests/integration/targets/filter_dict/tasks/main.yml

@@ -0,0 +1,7 @@
+---
+- name: "Test dict filter"
+  assert:
+    that:
+      - "[['a', 'b']] | community.general.dict == dict([['a', 'b']])"
+      - "[['a', 'b'], [1, 2]] | community.general.dict == dict([['a', 'b'], [1, 2]])"
+      - "[] | community.general.dict == dict([])"