René Bernhardsgrütter created TAP5-2066:
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Summary: "tagName" property name in a form that renders a zone
leads to an "Forms require that the request method be POST and that the
t:formdata query parameter have values." error
Key: TAP5-2066
URL: https://issues.apache.org/jira/browse/TAP5-2066
Project: Tapestry 5
Issue Type: Bug
Components: tapestry-core
Affects Versions: 5.3.6
Reporter: René Bernhardsgrütter
When I name a property "tagName" that's used in a form which submission leads
to a zone update, I get the following error: "Forms require that the request
method be POST and that the t:formdata query parameter have values.".
After I renamed the "tagName" property to "userTagName", it worked correctly.
Example:
Java:
@Property
private String tagName;
@Component
private Zone tagZone;
TML:
<t:zone t:id="userTagZone" id="userTagZone">
<!-- updated content -->
<t:form t:id="addForm" t:zone="userTagZone">
<t:textfield t:id="tagName" t:mixins="autocomplete"/>
</t:form>
</t:zone>
It doesn't matter whether the form is in or out of the zone. I've tested the
same also with this jumpstart page
(http://jumpstart.doublenegative.com.au/jumpstart/examples/ajax/formmultiplezoneupdate)
and a fresh Tapestry installation.
This problem could be related to this:
https://mail-archives.apache.org/mod_mbox/tapestry-users/201209.mbox/%[email protected]%3E
(I cannot reproduce this with the form/zone constellation here, but it goes in
a similar manner.)
http://tapestry.1045711.n5.nabble.com/t5-3-1-Heads-up-for-special-form-field-names-similar-to-InternalSymbols-PRE-SELECTED-FORM-NAMES-td5101482.html
The big problem is not the bug itself, but that it's very hard to find. I've
spent almost one and a half days to find it.
A simple warning or error message, that would be displayed when such critical
property names are in use, would do it.
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