ZTutils marshalling functions

[Benoît PIN]

ZTUtils.make_hidden_input and url_query don't correctly build hidden fields or urls based on nested list and dictionnary forms. This bug comes from marshalling functions implementations which are not recursive enough.

For example, this form:

> <form>
> <input type="text" value="a token field" name="rec2.a:tokens:records">
> <textarea name="rec2.b:utf8:ulines:list:records"
> >First line
> Second
> c⒜✔❀ϚτЄRS</textarea>
> <input type="text" name="rec2.b:date:list:records" value="2004/22/09 10:15">
> <input type="text" name="rec2.b:float:list:records" value="33.33">
> <textarea name="a_list:lines:list">
> One
> Two
> Three</textarea><br>
> <input name="a_list:float:list" value="0.01">
> </form>

The REQUEST.form variable built by ZPublisher will be like this :

rec2 = [{'a': ['a', 'token', 'field'], 'b': [[u'First line', u'Second', u'c\u249c\u2714\u2740\u03da\u03c4\u0404RS'], DateTime('2004/09/22 10:15:00 GMT+2'), 33.329999999999998]}]
a_list = [['One', 'Two', 'Three'], 0.01]

And, if you want to regenerate the form with the make_hidden_input function, the (wrong) result looks like as follows: nested lists and dictionnaries are rendered as raw strings, so input data types are lost.

> <input type="hidden" name="rec2:list" value="a: ['a', 'token', 'field'], b: [[u'First line', u'Second', u'c\u249c\u2714\u2740\u03da\u03c4\u0404RS'], DateTime('2004/09/22 10:15:00 GMT+2'), 33.329999999999998]">
> <input type="hidden" name="a_list:list" value="['One', 'Two', 'Three']">
> <input type="hidden" name="a_list:float:list" value="0.01">

If you install the attached hotfix, the result will be :

> <input type="hidden" name="rec2.a:list:records" value="a">
> <input type="hidden" name="rec2.a:list:records" value="token">
> <input type="hidden" name="rec2.a:list:records" value="field">
> <input type="hidden" name="rec2.b:utf8:ulines:list:records" value="First line
> Second
> c⒜✔❀ϚτЄRS">
> <input type="hidden" name="rec2.b:date:list:records" value="2004/09/22 10:15:00 GMT+2">
> <input type="hidden" name="rec2.b:float:list:records" value="33.33">
> <input type="hidden" name="a_list:tokens:list" value="One Two Three">
> <input type="hidden" name="a_list:float:list" value="0.01">

You can see on this example that marshalling operators on output forms are not necessary identical to the primary forms, but they keep the semantics.

[Colin Watson (cjwatson)]

The zope2 project on Launchpad has been archived at the request of the Zope developers (see https://answers.launchpad.net/launchpad/+question/683589 and https://answers.launchpad.net/launchpad/+question/685285). If this bug is still relevant, please refile it at https://github.com/zopefoundation/zope2.