BIND: 'notify' item required, was: Jinja goose chase: "notify"

hack i'm trying

bind_local_config:
  file.managed:
    - name: {{ map.local_config }}
    - source: 'salt://{{ map.config_source_dir }}/named.conf.local'
    - template: jinja
    - user: {{ salt['pillar.get']('bind:config:user', map.user) }}
    - group: {{ salt['pillar.get']('bind:config:group', map.group) }}
    - mode: {{ salt['pillar.get']('bind:config:mode', '644') }}
    - context:
        map: {{ map }}
    - require:
      - pkg: bind
      - file: {{ map.log_dir }}/query.log
    - watch_in:
      - service: bind
      {# taking on: #}
    - defaults:
        wibble: {{ pillar['bind'] }}
    - order: 2
{#  ...with varying 'order' numbers and various pillars pointed at, with no change, 
    so i'm guessing i'm barking up a wrong tree. #}

pillar that feeds it

bind:
  lookup:
    pkgs:
      - bind9
    service: bind9
  config:
    tmpl: salt://bind/files/debian/named.conf
    user: root
    group: bind
    mode: 640
  configured_zones:
    peerlessnetwork.com:
      type: master
      also_notify: "172.16.52.197; 172.16.51.98; 208.93.42.60;"
    40.93.208.in-addr.arpa:
      type: slave
      notify: False
  available_zones:
    peerlessnetwork.com:
      file: db.peerlessnetwork.com
      masters: "208.93.40.52, 208.93.42.60;"
    40.93.208.in-addr.arpa:
      file: slave.40.93.208
      masters: "208.93.40.52, 208.93.42.60;"

state that draws it

From the "bind" formula, in  'config.sls':

bind_local_config:
  file.managed:
    - name: {{ map.local_config }}
    - source: 'salt://{{ map.config_source_dir }}/named.conf.local'
    - template: jinja
    - user: {{ salt['pillar.get']('bind:config:user', map.user) }}
    - group: {{ salt['pillar.get']('bind:config:group', map.group) }}
    - mode: {{ salt['pillar.get']('bind:config:mode', '644') }}
    - context:
        map: {{ map }}
    - require:
      - pkg: bind
      - file: {{ map.log_dir }}/query.log
    - watch_in:
      - service: bind

template where it happens

{# the "also_notify" is my addition, but the same error happens after a rollback #}
{%- macro zone(key, args, file, masters) %}
zone "{{ key }}" {
  type {{ args['type'] }};
  {% if args['dnssec'] is defined and args['dnssec'] -%}
  file "zones/{{ file }}.signed";
  {% else -%}
  file "zones/{{ file }}";
  {%- endif %}
  {% if args['allow-update'] is defined -%}
  allow-update { {{args['allow-update']}}; };
  {%- endif %}
  {%- if args.update_policy is defined %}
  update-policy {
  {%-   for policy in args.update_policy %}
    {{ policy }};
  {%- endfor %}
  };
  {%- endif %}

  {%- if args.allow_transfer is defined %}
  allow-transfer {
  {% for remote in args.get('allow-transfer', {}) %}
    {{ remote }};
  {% endfor %}
  };
  {%- endif -%}

  {% if args['type'] == "master" -%}
    {% if args['notify'] -%}
  notify yes;
    {% else -%}
  notify no;
    {%- endif -%}
    {% if args['also_notify'] -%}
  also-notify { {{ also_notify }} };
    {%- endif -%}
  {% else -%}
  notify no;
  masters { {{ masters }} };
  {%- endif %}
};
{%- endmacro %}

what's failing

----------
          ID: bind_local_config
    Function: file.managed
        Name: /etc/bind/named.conf.local
      Result: False
     Comment: An exception occurred in this state: Traceback (most recent call last):
                File "/usr/lib/python2.7/dist-packages/salt/state.py", line 1560, in call
                  **cdata['kwargs'])
                File "/usr/lib/python2.7/dist-packages/salt/states/file.py", line 1423, in managed
                  **kwargs
                File "/usr/lib/python2.7/dist-packages/salt/modules/file.py", line 3142, in check_managed_changes
                  **kwargs)
                File "/usr/lib/python2.7/dist-packages/salt/modules/file.py", line 2841, in get_managed
                  **kwargs)
                File "/usr/lib/python2.7/dist-packages/salt/utils/templates.py", line 121, in render_tmpl
                  output = render_str(tmplstr, context, tmplpath)
                File "/usr/lib/python2.7/dist-packages/salt/utils/templates.py", line 324, in render_jinja_tmpl
                  buf=tmplstr)
              SaltRenderError: Jinja variable 'dict object' has no attribute 'notify'
     Started: 14:14:38.812499
    Duration: 68.325 ms
     Changes:   
----------

If anybody's looking: found the trouble. In hindsight I see I'd just misread the error, but given its phrasing I'm cutting myself some slack.

I had an entry in my pillar under 'configured_zones' that didn't have a 'notify:' item at all. Plug that in, set to to either 'True' or 'False', and all is well.

The error was:
SaltRenderError: Jinja variable 'dict object' has no attribute 'notify'

But if it'd been phrased:
SaltRenderError: Jinja variable 'dict object' has no attribute: 'notify'

...I might have caught on sooner.