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pypm install megrok.z3cform.crud

How to install megrok.z3cform.crud

  1. Download and install ActivePython
  2. Open Command Prompt
  3. Type pypm install megrok.z3cform.crud
 Python 2.7Python 3.2Python 3.3
Windows (32-bit)
0.1 Available View build log
Windows (64-bit)
0.1 Available View build log
Mac OS X (10.5+)
0.1 Available View build log
Linux (32-bit)
0.1 Available View build log
Linux (64-bit)
0.1 Available View build log
 
License
GPL
Lastest release
version 0.1 on Jul 6th, 2011

Crud

This module gives you an abstract base class to make CRUD forms with. These forms give you by default a tabular view of the objects, where attributes of the object can be edited in-place. Please refer to the ICrudForm interface for more details.

>>> from megrok.z3cform.crud import crud

Form registration

Models

We set up some models to serve as a form context:

>>> import grokcore.component as grok
>>> from zope import interface, schema
>>> class IPerson(interface.Interface):
...    name = schema.TextLine(title=u"Name")
...    age = schema.Int(title=u"Age")
>>> class Person(grok.Context):
...    grok.implements(IPerson)
...    name = schema.fieldproperty.FieldProperty(IPerson['name'])
...    age = schema.fieldproperty.FieldProperty(IPerson['age'])
...
...    def __init__(self, name, age):
...        self.name = name
...        self.age = age
>>> class IPersonContainer(interface.Interface):
...    pass
>>> class PersonContainer(dict):
...    grok.implements(IPersonContainer)

For this test, we take the the name of our persons as keys in our storage:

>>> storage = PersonContainer()
>>> storage['Peter'] = Person(u'Peter', 16)
>>> storage['Martha'] = Person(u'Martha', 32)

We declare the Form with the help of megrok.z3cform.base. It's very similar to a grok.View:

>>> import megrok.z3cform.base as z3cform
>>> class TestForm(crud.CrudForm):
...    grok.context(IPersonContainer)
...
...    update_schema = IPerson
...
...    def get_items(self):
...        return sorted(storage.items(), key=lambda x: x[1].name)
...
...    def add(self, data):
...        person = Person(**data)
...        storage[str(person.name)] = person
...        return person
...
...    def remove(self, (id, item)):
...        del storage[id]
Grokking and querying

We let Grok register the component:

>>> grok.testing.grok_component('form', TestForm)

System Message: ERROR/3 (<string>, line 74)

Inconsistent literal block quoting.

True

Now, we can query it normally:

>>> from zope.publisher.browser import TestRequest
>>> request = TestRequest()
>>> from zope.component import getMultiAdapter
>>> myform = getMultiAdapter((storage, request), name="testform")
>>> myform
<TestForm object at ...>
>>> print myform()
<form action="http://127.0.0.1" method="post"
enctype="multipart/form-data" class="form-testform">
...

Changelog

0.1
  • Initial release

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Last updated Jul 6th, 2011

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