[Zope] ANNOUNCE: An easier way to write products

[maxm]

From: "Oleg Broytmann" <phd@phd.pp.ru>

>    Ever looked to Zope beans?
> http://www.pault.com/pault/zope/zope_beans.html

Yes, but I think my approach is more in line with Zope. To me it is anyway.
Also I need a new object format like a hole in the the head ;-) Here I am
thinking of the xml format describing the Zope bean.

But see below. I don't tink that the "easy" approach is harder than the
"bean" approach. They are both about the same amount of lines anyway :-)

And how do you set Security on the methods?

And if you change the "_properties" in the "easy" approach they are
immediately updated in your product.

regards Max M

#####################################################
#####################################################

<bean>
<name> Hello    </name>
<icon> bean.gif </icon>
<version> 0-0-1 </version>
<meta> Sample Zope Bean </meta>

<property name="greeting" type="string">
Default Greeting
</property>

<property name="counter" type="string">3</property>

<method name="SayGreeting" />
<method name="SaySomething"/>

<readme>
Hello Zope Bean.

This is sample bean to show how Zope Beans work.
</readme>

</bean>

#####################################################

class Hello:
    "Actual semantics of Hello Bean"

    def SayGreeting(self):
    return "Greeting is: " + self.get_greeting()

    def SaySomething(self, msg, ntimes ):
    ret = []
    for n in range( 1,ntimes ) :
        ret.append(
            self.get_greeting() +
            " By the way ... "  +  msg)

    return ret

#####################################################
#####################################################

from mxm import mxmSimpleItem

class Hello(mxmSimpleItem.mxmSimpleItem):

    meta_type = 'Hello'

    _properties = (
        {'id':greeting, 'type':'string', 'mode':'w'},
        {'id':counter, 'type':'text', 'mode':'w'},
    )

    __ac_permissions__ = mxmSimpleItem.__ac_permissions__ + (
        # label
        ('View',
            # methods
            ('SayGreeting','SaySomething'),
            # roles
            ('Anonymous', 'Manager'),
        ),
    )

    def SayGreeting(self):
        ""
        return "Greeting is: " + self.greeting

    def SaySomething(self, msg, ntimes ):
        ""
        ret = []
        for n in range( 1,ntimes ) :
            ret.append(
                self.greeting +
                " By the way ... "  +  msg)
            return ret

    def manage_addAction(self, id=None, REQUEST=None):
        "Add instance to parent ObjectManager"
        mxmSimpleItem.addClass(self, id, Hello, REQUEST)

constructors =  (mxmSimpleItem.manage_addForm, manage_addAction)

#####################################################

import mxmItem

def initialize(context):

    context.registerClass(
        mxmItem.mxmItem,
        constructors = mxmItem.constructors,
        icon="bean.gif"
    )

#####################################################