zeam.form.ztk 1.0b2

Zope Toolkit support for zeam.form

zeam.form.ztk help you to integrate zeam.form.base with the Zope Tool Kit. It provides:

• Form fields generation out of zope.schema fields, and zope.schema fields listed in a Zope interface,

• Widgets for those fields,

• Default action to Add, Edit a content, Cancel a current action by returning on the default view of a content.

Like zeam.form.base the focus is to have an API usable by the developer, not a support of theorical use-cases that you don’t need.

Contents

• Example

  • Add form

  • Edit form

• API

  • Actions

  • Fields

• Changelog

  • 1.0b2 (2010/05/13)

  • 1.0b1 (2010/05/03)

Example

Let’s create a form to edit a content. Here we have an interface for our content:

from zope import schema, interface

class IClan(interface.Interface):
   pass

class IPerson(interface.Interface):

   first_name = schema.TextLine(title=u"First Name")
   last_name = schema.TextLine(title=u"Last Name")
   age = schema.Int(title=u"Age", required=False)
   single = schema.Bool(title=u"Is single ?", default=True)

We assume that a Person is in a Clan. We can implement a Person:

from persistence import Persistent

class Person(Persistent):
    interface.implements(IPerson)

    first_name = None
    last_name = None
    age = None
    single = True

Add form

You can add a new Person in a clan like this:

import zeam.form.ztk as form

class Add(form.Form):

    form.context(IClan)

    label = u"New person"
    fields = form.Fields(IPerson)
    actions =  form.Actions(
         form.AddAction("Add", factory=Person),
         form.CancelAction("Cancel"))
    actions['add'].fieldName = 'last_name'

Edit form

You can edit a Person like this:

class Edit(form.Form):

    form.context(IPerson)

    label = u"Change person details"
    fields = form.Fields(IPerson)
    actions =  form.Actions(
         form.EditAction("Update"),
         form.CancelAction("Cancel"))

    ignoreContent = False

API

All the API of zeam.form.base is exported as well.

Actions

AddAction

Action which take an extra parameter, factory, to create an object stored on the content object. The created object is added with the help of INameChooser to get its identifier. The option fieldName will be used to lookup a value in the form data to give as potential identifier to INameChooser. Afterwards the created object is edited (like EditAction does) with the form data.

EditAction

Action which use the form data to change values on the content object, designated by the form fields, after validation of the form submission.

CancelAction

Simple action which return on default view of the content without validating the form submission.

Fields

Currently supported fields:

• Date, Datetime: generate a text line input and parse/display the date using the locale,

• TextLine, Text, and numbers (Int, Float …),

• Password,

• Choice: generate a select,

• Object,

• Collections: List, Set, Tuple:

  • Collection of choices: generate a widget with a list of checkboxes,

  • Collection of objects: generate a table to edit multiple objects,

  • Other collection: generate a widget with generic add an remove actions.

For more documentation, please report to the doctests included in the code.

Changelog

1.0b2 (2010/05/13)

• Improve widget initialization, and testing layer support.

• Fix choice widgets when they are used with vocabulary factories.

1.0b1 (2010/05/03)

• Initial release, with not all the widgets.