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split up instance processing, allowing for fine-grained overriding by subclasses

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git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3374 fd906abe-77d9-0310-91a1-e0d9ade77398
This commit is contained in:
helmutm 2009-05-06 21:01:47 +00:00
parent c59fc50291
commit 2531f575e2
1 changed files with 24 additions and 8 deletions
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32
composer/message/instance.py
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@ -41,11 +41,15 @@ from cybertools.util.jeep import Jeep
class DataProvider(object):
extensions = {}
def __init__(self, context, data):
self.context = context
self.data = data
def __getitem__(self, key):
if key in self.extensions:
return self.extensions[key](self)
client = self.context.client
messageManager = self.context.manager
if key.startswith('@@'):
@ -71,14 +75,7 @@ class DataProvider(object):
messageManager)
return mi.applyTemplate(self.data)['text']
elif '.' in key:
if client is None:
return '$' + key
schemaName, fieldName = key.split('.', 1)
schema = client.manager.getClientSchemas()[schemaName]
instance = IInstance(client)
instance.template = schema
data = instance.applyTemplate()
return data[fieldName]
return self.getSubfieldValue(key)
elif key in self.data:
return self.data[key]
else:
@ -90,6 +87,25 @@ class DataProvider(object):
(self.context.client.manager, request), name=name)
return view
def getSubfieldValue(self, key):
client = self.context.client
if client is None:
return '$' + key
schemaName, fieldName = key.split('.', 1)
schema = self.getClientSchemas().get(schemaName)
if schema is None:
return '$' + key
instance = IInstance(self.getSubclient(schemaName))
instance.template = schema
data = instance.applyTemplate()
return data.get(fieldName) or '$' + key
def getSubclient(self, name):
return self.context.client
def getClientSchemas(self):
return self.context.client.manager.getClientSchemas()
class MessageInstance(Instance):