Add optional 'skip_missing' flag to subelements

test/integration/roles/test_iterators/tasks/main.yml

@@ -39,7 +39,7 @@
   set_fact: "{{ item.0 + item.1 }}=x"
   with_nested:
     - [ 'a', 'b' ]
-    - [ 'c', 'd' ]        
+    - [ 'c', 'd' ]
 
 - debug: var=ac
 - debug: var=ad
@@ -97,6 +97,39 @@
         - "_ye == 'e'"
         - "_yf == 'f'"
 
+- name: test with_subelements in subkeys
+  set_fact: "{{ '_'+ item.0.id + item.1 }}={{ item.1 }}"
+  with_subelements:
+    - element_data
+    - the.sub.key.list
+
+- name: verify with_subelements in subkeys results
+  assert:
+    that:
+        - "_xq == 'q'"
+        - "_xr == 'r'"
+        - "_yi == 'i'"
+        - "_yo == 'o'"
+
+- name: test with_subelements with missing key or subkey
+  set_fact: "{{ '_'+ item.0.id + item.1 }}={{ item.1 }}"
+  with_subelements:
+    - element_data_missing
+    - the.sub.key.list
+    - skip_missing: yes
+  register: _subelements_missing_subkeys
+
+- debug: var=_subelements_missing_subkeys.skipped
+- debug: var=_subelements_missing_subkeys.results|length
+- name: verify with_subelements in subkeys results
+  assert:
+    that:
+        - _subelements_missing_subkeys.skipped is not defined
+        - _subelements_missing_subkeys.results|length == 2
+        - "_xk == 'k'"
+        - "_xl == 'l'"
+
+
 # WITH_TOGETHER        
 
 - name: test with_together

test/integration/roles/test_iterators/vars/main.yml

@@ -3,7 +3,41 @@ element_data:
     the_list:
       - "f"
       - "d"
+    the:
+      sub:
+        key:
+          list:
+            - "q"
+            - "r"
   - id: y
     the_list:
       - "e"
       - "f"
+    the:
+      sub:
+        key:
+          list:
+            - "i"
+            - "o"
+element_data_missing:
+  - id: x
+    the_list:
+      - "f"
+      - "d"
+    the:
+      sub:
+        key:
+          list:
+            - "k"
+            - "l"
+  - id: y
+    the_list:
+      - "f"
+      - "d"
+  - id: z
+    the_list:
+      - "e"
+      - "f"
+    the:
+      sub:
+        key: