python - Plon:更改内容类型的默认架构

Question

我正在使用 Products.FacultyStaffDirectory 产品来管理我网站中的联系人。

当您处于编辑模式时，其中一种内容类型，即 FacultyStaffDirectory，在“分类”选项卡中具有描述字段。现在我需要删除描述字段并将其放入默认选项卡中。

为此，我使用 archetypes.schemaextender 产品来编辑该字段。特别是，我正在使用 ISchemaModifier。

我已经实现了代码，但该字段仍然显示在分类选项卡中。可能是我错过了什么。下面是代码:

这是包含我要修改的描述字段的类:

# -*- coding: utf-8 -*-

__author__ = """WebLion <support@weblion.psu.edu>"""
__docformat__ = 'plaintext'

from AccessControl import ClassSecurityInfo
from Products.Archetypes.atapi import *
from zope.interface import implements
from Products.FacultyStaffDirectory.interfaces.facultystaffdirectory import IFacultyStaffDirectory
from Products.FacultyStaffDirectory.config import *
from Products.CMFCore.permissions import View, ManageUsers
from Products.CMFCore.utils import getToolByName
from Products.ATContentTypes.content.base import ATCTContent
from Products.ATContentTypes.content.schemata import ATContentTypeSchema, finalizeATCTSchema
from Products.membrane.at.interfaces import IPropertiesProvider
from Products.membrane.utils import getFilteredValidRolesForPortal
from Acquisition import aq_inner, aq_parent
from Products.FacultyStaffDirectory import FSDMessageFactory as _

schema = ATContentTypeSchema.copy() + Schema((
    LinesField('roles_',
        accessor='getRoles',
        mutator='setRoles',
        edit_accessor='getRawRoles',
        vocabulary='getRoleSet',
        default = ['Member'], 
        multiValued=1,
        write_permission=ManageUsers,
        widget=MultiSelectionWidget(
            label=_(u"FacultyStaffDirectory_label_FacultyStaffDirectoryRoles", default=u"Roles"),
            description=_(u"FacultyStaffDirectory_description_FacultyStaffDirectoryRoles", default=u"The roles all people in this directory will be granted site-wide"),
            i18n_domain="FacultyStaffDirectory",
            ),
        ),
    IntegerField('personClassificationViewThumbnailWidth',
        accessor='getClassificationViewThumbnailWidth',
        mutator='setClassificationViewThumbnailWidth',
        schemata='Display',
        default=100,
        write_permission=ManageUsers,
        widget=IntegerWidget(
            label=_(u"FacultyStaffDirectory_label_personClassificationViewThumbnailWidth", default=u"Width for thumbnails in classification view"),
            description=_(u"FacultyStaffDirectory_description_personClassificationViewThumbnailWidth", default=u"Show all person thumbnails with a fixed width (in pixels) within the classification view"),
            i18n_domain="FacultyStaffDirectory",
            ),
        ),
    ))

FacultyStaffDirectory_schema = OrderedBaseFolderSchema.copy() + schema.copy()  # + on Schemas does only a shallow copy
finalizeATCTSchema(FacultyStaffDirectory_schema, folderish=True)

class FacultyStaffDirectory(OrderedBaseFolder, ATCTContent):
    """
    """
    security = ClassSecurityInfo()
    implements(IFacultyStaffDirectory, IPropertiesProvider)
    meta_type = portal_type = 'FSDFacultyStaffDirectory'

    # Make this permission show up on every containery object in the Zope instance. This is a Good Thing, because it easy to factor up permissions. The Zope Developer's Guide says to put this here, not in the install procedure (http://www.zope.org/Documentation/Books/ZDG/current/Security.stx). This is because it isn't "sticky", in the sense of being persisted through the ZODB. Thus, it has to run every time Zope starts up. Thus, when you uninstall the product, the permission doesn't stop showing up, but when you actually remove it from the Products folder, it does.
    security.setPermissionDefault('FacultyStaffDirectory: Add or Remove People', ['Manager', 'Owner'])

    # moved schema setting after finalizeATCTSchema, so the order of the fieldsets
    # is preserved. Also after updateActions is called since it seems to overwrite the schema changes.
    # Move the description field, but not in Plone 2.5 since it's already in the metadata tab. Although, 
    # decription and relateditems are occasionally showing up in the "default" schemata. Move them
    # to "metadata" just to be safe.
    if 'categorization' in FacultyStaffDirectory_schema.getSchemataNames():
        FacultyStaffDirectory_schema.changeSchemataForField('description', 'categorization')
    else:
        FacultyStaffDirectory_schema.changeSchemataForField('description', 'metadata')
        FacultyStaffDirectory_schema.changeSchemataForField('relatedItems', 'metadata')

    _at_rename_after_creation = True
    schema = FacultyStaffDirectory_schema

    # Methods
    security.declarePrivate('at_post_create_script')
    def at_post_create_script(self):
        """Actions to perform after a FacultyStaffDirectory is added to a Plone site"""
        # Create some default contents
        # Create some base classifications
        self.invokeFactory('FSDClassification', id='faculty', title='Faculty')
        self.invokeFactory('FSDClassification', id='staff', title='Staff')
        self.invokeFactory('FSDClassification', id='grad-students', title='Graduate Students')
        # Create a committees folder
        self.invokeFactory('FSDCommitteesFolder', id='committees', title='Committees')
        # Create a specialties folder
        self.invokeFactory('FSDSpecialtiesFolder', id='specialties', title='Specialties')

    security.declareProtected(View, 'getDirectoryRoot')
    def getDirectoryRoot(self):
        """Return the current FSD object through acquisition."""
        return self

    security.declareProtected(View, 'getClassifications')
    def getClassifications(self):
        """Return the classifications (in brains form) within this FacultyStaffDirectory."""
        portal_catalog = getToolByName(self, 'portal_catalog')
        return portal_catalog(path='/'.join(self.getPhysicalPath()), portal_type='FSDClassification', depth=1, sort_on='getObjPositionInParent')

    security.declareProtected(View, 'getSpecialtiesFolder')
    def getSpecialtiesFolder(self):
        """Return a random SpecialtiesFolder contained in this FacultyStaffDirectory.
           If none exists, return None."""
        specialtiesFolders = self.getFolderContents({'portal_type': 'FSDSpecialtiesFolder'})
        if specialtiesFolders:
            return specialtiesFolders[0].getObject()
        else:
            return None

    security.declareProtected(View, 'getPeople')
    def getPeople(self):
        """Return a list of people contained within this FacultyStaffDirectory."""
        portal_catalog = getToolByName(self, 'portal_catalog')
        results = portal_catalog(path='/'.join(self.getPhysicalPath()), portal_type='FSDPerson', depth=1)
        return [brain.getObject() for brain in results]

    security.declareProtected(View, 'getSortedPeople')
    def getSortedPeople(self):
        """ Return a list of people, sorted by SortableName
        """
        people = self.getPeople()
        return sorted(people, cmp=lambda x,y: cmp(x.getSortableName(), y.getSortableName()))

    security.declareProtected(View, 'getDepartments')
    def getDepartments(self):
        """Return a list of FSDDepartments contained within this site."""
        portal_catalog = getToolByName(self, 'portal_catalog')
        results = portal_catalog(portal_type='FSDDepartment')
        return [brain.getObject() for brain in results]

    security.declareProtected(View, 'getAddableInterfaceSubscribers')
    def getAddableInterfaceSubscribers():
        """Return a list of (names of) content types marked as addable using the
           IFacultyStaffDirectoryAddable interface."""
        return [type['name'] for type in listTypes() if IFacultyStaffDirectoryAddable.implementedBy(type['klass'])]

    security.declarePrivate('getRoleSet')
    def getRoleSet(self):
        """Get the roles vocabulary to use."""
        portal_roles = getFilteredValidRolesForPortal(self)
        allowed_roles = [r for r in portal_roles if r not in INVALID_ROLES]
        return allowed_roles

    #
    # Validators
    #
    security.declarePrivate('validate_id')
    def validate_id(self, value):
        """Ensure the id is unique, also among groups globally."""
        if value != self.getId():
            parent = aq_parent(aq_inner(self))
            if value in parent.objectIds():
                return _(u"An object with id '%s' already exists in this folder") % value

            groups = getToolByName(self, 'portal_groups')
            if groups.getGroupById(value) is not None:
                return _(u"A group with id '%s' already exists in the portal") % value

registerType(FacultyStaffDirectory, PROJECTNAME)

下面是我实现的用于更改描述字段架构的类的代码部分:

from Products.Archetypes.public import ImageField, ImageWidget, StringField, StringWidget, SelectionWidget, TextField, RichWidget
from Products.FacultyStaffDirectory.interfaces.facultystaffdirectory import IFacultyStaffDirectory
from archetypes.schemaextender.field import ExtensionField
from archetypes.schemaextender.interfaces import ISchemaModifier, ISchemaExtender, IBrowserLayerAwareExtender
from apkn.templates.interfaces import ITemplatesLayer
from zope.component import adapts
from zope.interface import implements

class _ExtensionImageField(ExtensionField, ImageField): pass
class _ExtensionStringField(ExtensionField, StringField): pass
class _ExtensionTextField(ExtensionField, TextField): pass

class FacultyStaffDirectoryExtender(object):
    """
    Adapter to add description field to a FacultyStaffDirectory.
    """
    adapts(IFacultyStaffDirectory)
    implements(ISchemaModifier, IBrowserLayerAwareExtender)

    layer = ITemplatesLayer

    fields = [
    ]


    def __init__(self, context):
        self.context = context

    def getFields(self):
        return self.fields

    def fiddle(self, schema):
        desc_field = schema['description'].copy()
        desc_field.schemata = "default"
        schema['description'] = desc_field

这是我的configure.zcml 中的代码:

<adapter
    name="apkn-FacultyStaffDirectoryExtender"
    factory="apkn.templates.extender.FacultyStaffDirectoryExtender"        
    provides="archetypes.schemaextender.interfaces.ISchemaModifier"
/> 

这里有我遗漏的东西吗？

Answer 1

def fiddle(self, schema):
    schema['description'].schemata = 'default'

应该足够了。 copy() 操作在这里没有任何意义。

为了检查是否实际使用了 fiddle() 方法:使用 pdb 或添加调试打印语句。