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Abhijit Menon-Sen 8cf1815867 Add an 'extract' filter 
At its most basic, this is nothing more than an array or hash lookup,
but when used in conjunction with map, it is very useful. For example,
while constructing an "ssh-keyscan …" command to update known_hosts on
all hosts in a group, one can get a list of IP addresses with:

    groups['x']|map('extract', hostvars, 'ec2_ip_address')|list

This returns hostvars[a].ec2_ip_address, hostvars[b].ec2_ip_address, and
so on. You can even specify an array of keys for a recursive lookup, and
mix string and integer keys depending on what you're looking up:

    ['localhost']|map('extract', hostvars, ['vars','group_names',0])|first
        == hostvars['localhost']['vars']['group_names'][0]
            == 'ungrouped'

Includes documentation and tests.
2015-12-02 18:16:38 +05:30
..
modules
ansible_ssh_changes_note.rst removed repetition of note and replaced with an include directive 2015-10-12 11:41:09 -04:00
become.rst typo fix 2015-09-15 10:00:01 -04:00
common_return_values.rst Updated outdated link to module directory. 2015-04-08 14:24:21 +01:00
community.rst Merge pull request #12097 from mgedmin/patch-1 2015-09-20 05:45:06 -07:00
developing.rst Add PR testing guide (95% from James). 2014-09-10 17:41:58 -04:00
developing_api.rst
developing_inventory.rst fix json typo 2014-02-20 23:02:07 -05:00
developing_modules.rst Fix missing word in developing_modules.rst 2015-11-25 18:29:17 +01:00
developing_plugins.rst Fix typo 2015-09-21 09:59:28 -05:00
developing_test_pr.rst Update doc for testing PR with mock dependency 2015-02-27 09:34:20 +01:00
faq.rst removed repetition of note and replaced with an include directive 2015-10-12 11:41:09 -04:00
galaxy.rst removes editorial 2015-11-27 10:09:55 +01:00
glossary.rst reordering entries in glossary for alphabetical order 2015-10-14 11:37:27 -04:00
guide_aws.rst Fix up rst formatting 2015-11-03 17:29:02 -08:00
guide_cloudstack.rst docsite: cloudstack: fix missing quotes in example 2015-11-23 07:10:47 +01:00
guide_gce.rst fixed all references to old plugins/inventory to point at contrib/inventory 2015-07-10 13:00:12 -04:00
guide_rax.rst Fix up rst formatting 2015-11-03 17:29:02 -08:00
guide_rolling_upgrade.rst Add note about useful quote filter. 2014-07-18 18:23:48 -04:00
guide_vagrant.rst Documentation: Update the Vagrant Guide 2015-11-20 21:50:41 +01:00
guides.rst doc: add cloudstack guide to the guides 2015-10-31 19:34:40 +01:00
index.rst Update index.rst 2015-07-07 11:28:20 +02:00
intro.rst draft bsd intro and bootstrapping 2015-08-12 22:18:29 -04:00
intro_adhoc.rst Make shell quoting rules explanation a bit clearer 2015-04-18 12:47:02 +03:00
intro_bsd.rst Update intro_bsd.rst 2015-11-09 12:34:28 +13:00
intro_configuration.rst Update docs and example config for requiretty + pipelining change 2015-12-01 10:24:15 -08:00
intro_dynamic_inventory.rst Update ec2 inventory documentation to refer to AWS_PROFILE 2015-09-28 21:35:46 +05:30
intro_getting_started.rst Update doc to use 'become' instead of 'sudo' 2015-09-08 15:42:56 +05:30
intro_installation.rst Removed erroneous apostrophe in installation documentation 2015-11-15 00:04:11 +00:00
intro_inventory.rst added "include" for ansible_ssh_ change note to another section of intro_inventory.rst for clarity 2015-10-13 13:59:44 -04:00
intro_patterns.rst Corrected group separator 2015-11-30 21:44:18 -06:00
intro_windows.rst Recommend using pywinrm >= 0.1.1 from PyPI instead of GitHub version. 2015-11-18 17:49:21 -05:00
modules.rst moar docs 2015-07-17 22:53:11 -04:00
modules_core.rst Fix typo in modules_core.rst 2015-11-24 12:49:15 -07:00
modules_extra.rst Fixing a small typo 2015-09-16 11:00:19 -08:00
modules_intro.rst fixed spelling 2015-07-20 12:30:15 -04:00
playbooks.rst moar docs 2015-07-17 22:53:11 -04:00
playbooks_acceleration.rst - Fixed line break causing part of the text to display as "Definition List" 2015-08-27 21:41:36 -06:00
playbooks_async.rst extend conditions for async error 2015-07-24 15:11:35 -04:00
playbooks_best_practices.rst DOC: in yum examples, 'pkg' arg renamed to 'name' 2015-10-20 13:49:04 +02:00
playbooks_blocks.rst Update playbooks_blocks.rst 2015-10-07 14:26:23 -04:00
playbooks_checkmode.rst
playbooks_conditionals.rst made condition not simplifiable to 'in' 2015-11-01 16:31:23 -05:00
playbooks_delegation.rst removing confusing parts 2015-08-06 16:51:04 +03:00
playbooks_environment.rst Document setting environment variables in a playbook 2015-10-22 12:07:54 +01:00
playbooks_error_handling.rst clarified ignore_errors 2015-10-27 19:59:43 -04:00
playbooks_filters.rst Add an 'extract' filter 2015-12-02 18:16:38 +05:30
playbooks_filters_ipaddr.rst Specify that 'ipaddr' is available in 1.9 2015-02-21 14:11:04 +01:00
playbooks_intro.rst Fix order of handlers that were notified in different sections 2015-10-21 11:00:47 +03:00
playbooks_lookups.rst Merge pull request #12881 from Scypho/devel 2015-11-12 15:39:35 -08:00
playbooks_loops.rst Merge pull request #13382 from mscherer/doc_with_inventory 2015-12-01 18:33:59 -08:00
playbooks_prompts.rst Fix incorrect example of vars_prompt 2015-07-27 11:08:39 +05:30
playbooks_roles.rst Clarify how tagged roles work 2015-11-02 11:47:18 -05:00
playbooks_special_topics.rst minor doc fixes 2015-06-03 20:56:33 -04:00
playbooks_startnstep.rst Replaced --start-at with --start-at-task 2015-04-05 20:47:22 +03:00
playbooks_strategies.rst Fixed docs typo 2015-10-20 16:38:16 +01:00
playbooks_tags.rst Update playbooks_tags.rst 2015-08-11 13:20:48 +01:00
playbooks_variables.rst v1 variable precedence order was off. 2015-11-06 13:48:35 -05:00
playbooks_vault.rst vault and variables best practices info added, edited, and referenced 2015-10-15 09:55:17 -04:00
quickstart.rst URL has changed 2015-06-23 08:52:57 -07:00
test_strategies.rst Merge pull request #9961 from volanja/replace_running_to_started 2015-07-20 23:13:29 -04:00
tower.rst Update tower.rst 2014-06-16 15:51:25 -04:00
YAMLSyntax.rst Added missing closing quote 2015-12-01 17:30:43 +05:30