ansible - 當語句不應該包含jinja2模板分隔符

Question

我希望有人可以提供幫助。我想知道在使用when聲明時，什麼是正確的語法？我有這個劇本：

- set_fact: 
    sh_vlan_id: "{{ output.response|map(attribute='vlan_id')|list|join(',') }}" 

- name: create vlans 
    ios_config: 
    provider: "{{ provider }}" 
    parents: vlan {{ item.id }} 
    lines: name {{ item.name }} 
    with_items: "{{ vlans }}" 
    register: result 
    when: '"{{ item.id }}" not in sh_vlan_id' 

在運行期間，它給了我一個警告，但它實際上接受它。我不確定這是否正常。

TASK [set_fact] ************************************************************************************************************************* 
ok: [acc_sw_01] 

TASK [create vlans] ********************************************************************************************************************* 
[WARNING]: when statements should not include jinja2 templating delimiters such as {{ }} or {% %}. Found: "{{ item.id }}" not in sh_vlan_id 

skipping: [acc_sw_01] => (item={u'id': 10, u'name': u'voice-1'}) 
skipping: [acc_sw_01] => (item={u'id': 101, u'name': u'data-2'}) 
skipping: [acc_sw_01] => (item={u'id': 100, u'name': u'data-1'}) 
changed: [acc_sw_01] => (item={u'id': 11, u'name': u'voice-2'}) 

但如果我刪除item.id花括號中when聲明

when: item.id not in sh_vlan_id 

它給了我一個錯誤：

TASK [set_fact] ************************************************************************************************************************* 
ok: [acc_sw_01] 

TASK [create vlans] ********************************************************************************************************************* 
fatal: [acc_sw_01]: FAILED! => {"failed": true, "msg": "The conditional check 'item.id not in sh_vlan_id' failed. The error was: Unexpected templating type error occurred on ({% if item.id not in sh_vlan_id %} True {% else %} False {% endif %}): coercing to Unicode: need string or buffer, int found\n\nThe error appears to have been in '/ansible/cisco-ansible/config_tasks/vlan.yml': line 16, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: create vlans\n^here\n"} 

我使用ansible 2.3.0（devel的cbedc4a12a ）順便說一句。謝謝

Answer 1

「正確」的語法是不包括警告所示的jinja模板。您的條件不起作用，否則，因爲類型不兼容。

你可以嘗試強制類型轉換：

when: ' item.id|string not in sh_vlan_id' 

See: http://jinja.pocoo.org/docs/dev/templates/#list-of-builtin-filters