zope.app.preference 3.8.1

User Preferences Framework ZMI UI

Set up

To show the user interface functions we need some setup beforehand:

>>> from zope.testbrowser.testing import Browser
>>> browser = Browser()

As the preferences cannot be defined through the web we have to define them in python code:

>>> import zope.interface
>>> import zope.schema
>>> class IZMIUserSettings(zope.interface.Interface):
...     """Basic User Preferences"""
...
...     email = zope.schema.TextLine(
...         title=u"E-mail Address",
...         description=u"E-mail Address used to send notifications")
...
...     skin = zope.schema.Choice(
...         title=u"Skin",
...         description=u"The skin that should be used for the ZMI.",
...         values=['Rotterdam', 'ZopeTop', 'Basic'],
...         default='Rotterdam')
...
...     showZopeLogo = zope.schema.Bool(
...         title=u"Show Zope Logo",
...         description=u"Specifies whether Zope logo should be displayed "
...                     u"at the top of the screen.",
...         default=True)

The preference schema is usually registered using a ZCML statement:

>>> from zope.configuration import xmlconfig
>>> import zope.app.preference
>>> context = xmlconfig.file('meta.zcml', zope.app.preference)

>>> context = xmlconfig.string('''
...     <configure
...         xmlns="http://namespaces.zope.org/zope"
...         i18n_domain="test">
...
...       <preferenceGroup
...           id="ZMISettings"
...           title="ZMI Settings"
...           schema="zope.app.preference.README.IZMIUserSettings"
...           category="true"
...           />
...
...     </configure>''', context)

Editing Preferences

The preferences are accessable in the ++preferences++ namespace:

>>> browser.open('http://localhost/++preferences++')

The page shows a form which allows editing the preference values:

>>> browser.getControl('E-mail').value = 'hans@example.com'
>>> browser.getControl('Skin').displayOptions
['Rotterdam', 'ZopeTop', 'Basic']
>>> browser.getControl('Skin').displayValue = ['ZopeTop']
>>> browser.getControl('Show Zope Logo').selected
True
>>> browser.getControl('Show Zope Logo').click()

After selecting Change the values get persisted:

>>> browser.getControl('Change').click()
>>> browser.url
'http://localhost/++preferences++/@@index.html'
>>> browser.getControl('E-mail').value
'hans@example.com'
>>> browser.getControl('Skin').displayValue
['ZopeTop']
>>> browser.getControl('Show Zope Logo').selected
False

The preference group is shown in a tree. It has a link to the form:

>>> browser.getLink('ZMISettings').click()
>>> browser.url
'http://localhost/++preferences++/ZMISettings/@@index.html'
>>> browser.getControl('E-mail').value
'hans@example.com'

Preference Group Trees

The preferences would not be very powerful, if you could create a full preferences. So let's create a sub-group for our ZMI user settings, where we can adjust the look and feel of the folder contents view:

>>> class IFolderSettings(zope.interface.Interface):
...     """Basic Folder Settings"""
...
...     shownFields = zope.schema.Set(
...         title=u"Shown Fields",
...         description=u"Fields shown in the table.",
...         value_type=zope.schema.Choice(['name', 'size', 'creator']),
...         default=set(['name', 'size']))
...
...     sortedBy = zope.schema.Choice(
...         title=u"Sorted By",
...         description=u"Data field to sort by.",
...         values=['name', 'size', 'creator'],
...         default='name')

And register it:

>>> context = xmlconfig.string('''
...     <configure
...         xmlns="http://namespaces.zope.org/zope"
...         i18n_domain="test">
...
...       <preferenceGroup
...           id="ZMISettings.Folder"
...           title="Folder Content View Settings"
...           schema="zope.app.preference.README.IFolderSettings"
...           />
...
...     </configure>''', context)

The sub-group is displayed inside the parent group as a form:

>>> browser.reload()
>>> browser.getControl('Shown Fields').displayOptions
['name', 'size', 'creator']
>>> browser.getControl('Shown Fields').displayValue
['name', 'size']
>>> browser.getControl('Shown Fields').displayValue = ['size', 'creator']
>>> browser.getControl('Sorted By').displayOptions
['name', 'size', 'creator']
>>> browser.getControl('Sorted By').displayValue = ['creator']

Selecing Change persists these values, too:

>>> browser.getControl('Change').click()
>>> browser.getControl('Shown Fields').displayValue
['size', 'creator']
>>> browser.getControl('Sorted By').displayValue
['creator']

3.8.1 (2010-06-15)

• Fixed BBB imports which pointed to a not existing zope.preferences

package.

3.8.0 (2010-06-12)

• Depend on split out zope.preference.

3.7.0 (2010-06-11)

• Added HTML labels to ZMI forms.
• Removed edit.pt as it seems to be unused.
• Added tests for the ZMI views.

3.6.0 (2009-02-01)

• Use zope.container instead of zope.app.container.

3.5.0 (2009-01-17)

• Got rid of zope.app.zapi dependency, replacing its uses with direct

imports from original places.

• Change mailing address from zope3-dev to zope-dev, as the first one

is retired now.

• Fix tests for python 2.6.
• Remove zpkg stuff and zcml include files for

old mkzopeinstance-based instances.

3.4.1 (2007-10-30)

• Avoid deprecation warnings for ZopeMessageFactory.

3.4.0 (2007-10-25)

• Initial release independent of the main Zope tree.