Jochen Kemnade created TAP5-2072:
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Summary: Tapestry "metadata" is not added to XHR response if event
handler method return JSONArray
Key: TAP5-2072
URL: https://issues.apache.org/jira/browse/TAP5-2072
Project: Tapestry 5
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.4
Reporter: Jochen Kemnade
For event handlers that return JSONObject, there is an entry _tapestry in the
response object that contains additional resources or inits that are to be
executed before passing the actual data to the success handler function.
When an event handler method returns JSONArray, the resulting array is passed
to the client as it is.
The actual problem I have is that I want to add an alert init to the response.
The issue could be addressed by wrapping JSONArray responses in a JSONObject,
(e.g. {_tapestry:{...}, data: [...]}) and transforming it back on the client
side. Probably, for the sake of consistency, it would even be best to to that
with JSONObject responses too (e.g. {_tapestry:{...}, data: {...}}).
However, that approach would lead to the problem that ResponseWrapper.text
(representing an Object) doesn't match ResponseWrapper.json (an Array). By the
way, there is also a mismatch between those properties for JSONObject responses
that contain a _tapestry property: it is deleted in ResponseWrapper.json but
stays in place within ResponseWrapper.text.
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