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Refactor of labels/fields/schema

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This commit is contained in:
Doug Blank 2016-01-06 10:06:47 -05:00
parent 5a8264f70e
commit 640e834c22
1 changed files with 51 additions and 13 deletions
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64
gramps/gen/lib/primaryobj.py
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@ -78,26 +78,53 @@ class BasicPrimaryObject(TableObject, PrivacyBase, TagBase):
No index positions allowed on lists.
"""
chain = field.split(".")
path = cls
for part in chain[:-1]:
schema = path.get_schema()
if part in schema.keys():
path = schema[part]
else:
raise Exception("No such %s in %s" % (part, schema))
if isinstance(path, (list, tuple)):
path = path[0]
path = cls._follow_schema_path(chain[:-1])
labels = path.get_labels(_)
if chain[-1] in labels:
return labels[chain[-1]]
else:
raise Exception("%s has no such label on %s: '%s'" % (cls, path, field))
@classmethod
def get_field_type(cls, field):
"""
Get the associated label given a field name of this object.
No index positions allowed on lists.
"""
chain = field.split(".")
ftype = cls._follow_schema_path(chain)
return ftype
@classmethod
def _follow_schema_path(cls, chain):
"""
Follow a list of schema items. Return endpoint.
"""
path = cls
for part in chain:
schema = path.get_schema()
if part.isdigit():
pass # skip over
elif part in schema.keys():
path = schema[part]
else:
raise Exception("No such %s in %s" % (part, schema))
if isinstance(path, (list, tuple)):
path = path[0]
return path
def get_field(self, field):
"""
Get the value of a field.
"""
chain = field.split(".")
path = self._follow_field_path(chain)
return path
def _follow_field_path(self, chain, ignore_errors=False):
"""
Follow a list of items. Return endpoint.
"""
path = self
for part in chain:
class_ = None
@ -116,13 +143,24 @@ class BasicPrimaryObject(TableObject, PrivacyBase, TagBase):
args.append(eval(sarg.strip()))
# call
path = getattr(path, function)(*args)
elif ignore_errors:
return
else:
# If any error, just returns None
# To check for errors:
# raise Exception("%s is not a valid field of %s; use %s" % (part, path, dir(path)))
return None
raise Exception("%s is not a valid field of %s; use %s" % (part, path, dir(path)))
return path
def set_field(self, field, value, ignore_errors=False):
"""
Set the value of a basic field (str, int, float, or bool).
value can be a string or actual value.
"""
chain = field.split(".")
path = self._follow_field_path(chain[:-1], ignore_errors)
ftype = self.get_field_type(field)
# ftype is str, bool, float, or int
value = (value in ['True', True]) if ftype is bool else value
setattr(path, chain[-1], ftype(value))
def set_gramps_id(self, gramps_id):
"""
Set the Gramps ID for the primary object.