for and if in template

[Joachim Friberg]

Hi,

I'm trying to get this:

define hostgroup{
  hostgroup_name   TableswitchesSweden
 members       dlg-prd-office-tbs01,dlg-prd-office-tbs02,dlg-prd-office-tbs03,dlg-prd-office-tbs04,dlg-prd-office-tbs05,dlg-prd-office-tbs07,dlg-prd-office-tbs08,dlg-prd-office-tbs10,dlg-prd-office-tbs11,dlg-prd-office-tbs12,dlg-prd-office-tbs13,dlg-prd-office-tbs14,dlg-prd-office-tbs15,dlg-prd-office-tbs16,dlg-prd-office-tbs17,dlg-prd-office-tbs18,dlg-prd-office-tbs19,dlg-prd-office-tbs20
}

From this:

extra_hosts:
  - file_name: dlg-prd-office-tbs22

    host_check_name: tbs22

    host_checks: 'http,generic-host,base-notify'

    host_check_ip: 10.0.49.71

    icon_set: network_service

    type: switches

  - file_name: dlg-prd-office-tbs23

    host_check_name: tbs23

    host_checks: 'http,generic-host,base-notify'

    host_check_ip: 10.0.49.72

    icon_set: network_service

    type: switches

  - file_name: dlg-prd-office-tbs24

    host_check_name: tbs24

    host_checks: 'http,generic-host,base-notify'

    host_check_ip: 10.0.49.73

    icon_set: network_service

    type: switches

  - file_name: dlg-prd-office-tbs25

    host_check_name: tbs25

    host_checks: 'http,generic-host,base-notify'

    host_check_ip: 10.0.49.74

    icon_set: network_service

    type: switches

I was thinking about something similar to

...
memebers     {% for unit in extra_hosts[0:] %}{% if "tbs" in unit.host_check_name %}{{ extra_hosts.file_name }}, {% endif %} {% endfor %}
...

How wrong might I be?

[Michael DeHaan]

It's probably fine.

Jinja2 has some filters like "map" and "reject" but it seems difficult to do something like an "in" query and does not allow Python list comprehensions.

It would be cleaner in most people's templates if it could be done on more than one line, but it seems you cannot.

Others may leverage templates more and may have some other suggestions.

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