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Avoid errors from selecting "no selection" on multilink (issue2550722).
As discussed in issue 2550722 there are various cases where selecting
"no selection" on a multilink can result in inappropriate errors from
Roundup:
* If selecting "no selection" produces a null edit (a value was set in
the multilink in an edit with an error, then removed again, along
with all other changes, in the next form submission), so the page is
rendered from the form contents including the "-<id>" value for "no
selection" for the multilink.
* If creating an item with a nonempty value for a multilink has an
error, and the resubmission changes that multilink to "no selection"
(and this in turn has subcases, according to whether the creation
then succeeds or fails on the resubmission, which need fixes in
different places in the Roundup code).
All of these cases have in common that it is expected and OK to have a
"-<id>" value for a submission for a multilink when <id> is not set in
that multilink in the database (because the original attempt to set
<id> in that multilink had an error), so the hyperdb.py logic to give
an error in that case is thus removed. In the subcase of the second
case where the resubmission with "no selection" has an error, the
templating code tries to produce a menu entry for the "-<id>"
multilink value, which also results in an error, hence the
templating.py change to ignore such values in the list for a
multilink.
| author | Joseph Myers <jsm@polyomino.org.uk> |
|---|---|
| date | Thu, 27 Sep 2018 11:33:01 +0000 |
| parents | 447a7647f237 |
| children |
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<!-- dollarId: issue.index,v 1.2 2001/07/29 04:07:37 richard Exp dollar--> <tal:block metal:use-macro="templates/page/macros/icing"> <title metal:fill-slot="head_title" i18n:translate="" ><span tal:replace="python:context._classname.capitalize()" i18n:name="class" /> editing - <span i18n:name="tracker" tal:replace="config/TRACKER_NAME" /></title> <tal:block metal:fill-slot="body_title" i18n:translate="" ><span tal:replace="python:context._classname.capitalize()" i18n:name="class" /> editing</tal:block> <td class="content" metal:fill-slot="content"> <span tal:condition="python:not (context.is_view_ok() or context.is_edit_ok() or request.user.hasRole('Anonymous'))" tal:omit-tag="python:1" i18n:translate="" >You are not allowed to view this page.</span> <span tal:condition="python:not (context.is_view_ok() or context.is_edit_ok()) and request.user.hasRole('Anonymous')" tal:omit-tag="python:1" i18n:translate="" >Please login with your username and password.</span> <tal:block tal:condition="context/is_edit_ok"> <tal:block i18n:translate=""> <p class="form-help"> You may edit the contents of the <span tal:replace="request/classname" i18n:name="classname"/> class using this form. Commas, newlines and double quotes (") must be handled delicately. You may include commas and newlines by enclosing the values in double-quotes ("). Double quotes themselves must be quoted by doubling (""). </p> <p class="form-help"> Multilink properties have their multiple values colon (":") separated (... ,"one:two:three", ...) </p> <p class="form-help"> Remove entries by deleting their line. Add new entries by appending them to the table - put an X in the id column. If you wish to restore a removed item and you know its id then just put that id in the id column. </p> </tal:block> <form onSubmit="return submit_once()" method="POST" tal:attributes="action context/designator"> <textarea rows="15" style="width:90%" name="rows" tal:content="context/csv"></textarea> <br> <input name="@csrf" type="hidden" tal:attributes="value python:utils.anti_csrf_nonce()"> <input type="hidden" name="@action" value="editCSV"> <input type="submit" value="Edit Items" i18n:attributes="value"> </form> </tal:block> <table tal:condition="context/is_only_view_ok" width="100%" class="list"> <tr> <th tal:repeat="property context/propnames" tal:content="property"> </th> </tr> <tal:block repeat="item context/list"> <tr tal:condition="item/is_view_ok" tal:attributes="class python:['normal', 'alt'][repeat['item'].index%6//3]"> <td tal:repeat="property context/propnames" tal:content="python: item[property] or default" > </td> </tr> </tal:block> </table> </td> </tal:block>
