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Ian Wienand 39945b8570 Make query with errors='ignore' return a blank list (#57038) ... The jinja2 query() function (or lookup with wantslist=True, which is the same thing) should always return a list. However, if you combine a query with errors='ignore' and take the error path, the current code returns a None value. This is important in a case such as - name: Conditional include file import_tasks: '{{ item }}' vars: params: files: - path/file1.yaml - path/file2.yaml loop: "{{ q('first_found', params, errors='ignore') }}" If neither file1.yaml or file2.yaml exist, this should do nothing by returning an empty list to the loop. Currently if you run the above task you'll get a rather unhelpful: Invalid data passed to 'loop', it requires a list, got this instead: . This change ensures that when a query ignores an error, it returns a empty list. The errors='ignore' case is tested in several variants with first_found. The extant (but deprecated) "skip: True" for first_found doesn't seem to be explicitly tested; a test is added here to avoid regressions before removal in 2.12. This fixes a regression you'll hit if you follow the suggestion in the deprecation message included with e17a2b502d to use errors=ignore over "skip: True" for first_found. This change adds an example that points out the query/lookup difference and also fixes the error message to not mention the now deprecated "skip: True". Closes #56775		6 years ago
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main.yml	Make query with errors='ignore' return a blank list (#57038)	6 years ago