all_filters = FilteredElementCollector(doc).OfClass(FilterElement).ToElements()
for filter in all_filters:
cateoryIds = filter.GetCategories()
for cateoryId in cateoryIds:
category = Category.GetCategory(doc,cateoryId)
category_name = category.Name
paras = filter.GetElementFilterParameters()
for para in paras:
parameter_element = doc.GetElement(para)
parameter_name = doc.GetElement(para).Name
Spent a lot time yesterday on apidocs and on google, but it´s all pretty confusing, and as some methods like .GetRules() did not work for me i thought there must have been a lot of changes in the api in the last years and I´m only finding old code…
Will try my luck again and see if your code and diagram will help me understand this whole filter rule stuff.
I´m in Revit 22, the parameter you mentioned is just a project parameter.
So this is my current status:
…
Still some things i don´t understand.
I have to get deep down to the rule to get the parameter value, but i get the parameter from the parameter filter element, that can´t be right because every rule could have a different parameter…
edit:
now also works for BuiltInParameters:
parameter_filters = FilteredElementCollector(doc).OfClass(ParameterFilterElement).ToElements()
BIPs = System.Enum.GetValues(BuiltInParameter)
if parameter_filters:
for parameter_filter in parameter_filters:
element_filter = parameter_filter.GetElementFilter() #Returns an ElementFilter representing the combination of rules used by this filter.
if element_filter:
element_parameter_filters = element_filter.GetFilters() #A filter used to match elements by one or more parameter filter rules.
for element_parameter_filter in element_parameter_filters:
rules = element_parameter_filter.GetRules() #Returns the set of rules contained in this filter.
for rule in rules:
if isinstance(rule, Autodesk.Revit.DB.FilterStringRule):
value = rule.RuleString
evaluator = rule.GetEvaluator()
elif isinstance(rule, Autodesk.Revit.DB.FilterValueRule):
value = rule.RuleValue
evaluator = rule.GetEvaluator()
elif isinstance(rule, Autodesk.Revit.DB.FilterElementIdRule):
value = rule.RuleValue
elif isinstance(rule, Autodesk.Revit.DB.FilterInverseRule):
pass
cateoryIds = parameter_filter.GetCategories()
for cateoryId in cateoryIds:
category = Category.GetCategory(doc,cateoryId)
category_name = category.Name
outlist =[]
parameter_ids = parameter_filter.GetElementFilterParameters() #Retrieves a list of the parameters associated with each rule in the filter.
for parameter_id in parameter_ids:
if parameter_id.IntegerValue < 0:
for bip in BIPs:
if ElementId(bip) == parameter_id:
parameter_element = bip
else:
parameter_element = doc.GetElement(parameter_id)
parameter_name = parameter_element.Name
Got it all working now, but I´m confused about the ‘FilterInverseRule’.
All filters I want to collect are from the type ‘FilterInverseRule’, I had to get the InnerRule to get my desired informations.
def section_type_filter():
parameter_filters = FilteredElementCollector(doc).OfClass(ParameterFilterElement).ToElements()
if parameter_filters:
for parameter_filter in parameter_filters:
element_filter = parameter_filter.GetElementFilter() #Returns an ElementFilter representing the combination of rules used by this filter.
if element_filter:
element_parameter_filters = element_filter.GetFilters() #A filter used to match elements by one or more parameter filter rules.
for element_parameter_filter in element_parameter_filters:
rules = element_parameter_filter.GetRules() #Returns the set of rules contained in this filter.
for rule in rules:
if isinstance(rule, Autodesk.Revit.DB.FilterInverseRule):
inner_rule = rule.GetInnerRule()
if isinstance(inner_rule, Autodesk.Revit.DB.FilterStringRule):
value = inner_rule.RuleString
parameter_id = rule.GetRuleParameter()
if value == section_type_value and parameter_id == section_type_parameter.Id:
return parameter_filter
So far so good, but i really have no idea what this ‘FilterInverseRule’ is, can someone please explain?
This is one of them, what makes this filter to a ‘FilterInverseRule’ and how to create such a filter with the revit UI?
The FilterInverseRule basically changes a rule to its opposite. The inversed rule is defined in the InnerRule of the FilterInverseRule. As an example, the rule shown in your screenshot should be a FilterInverseRule that has a FilterStringEquals rule as its InnerRule. I’m not sure what your end goal is here, but perhaps have a look at the Python code of Clockwork’s ParameterFilterElement.FilterRuleString node. It’s a recursive function that renders the entire filter rule as a human-readable string (see below).
Regarding the second part of your question: Any time you select an operator that contains a “not” in the UI (in your example: “does not equal”), you are using a FilterInverseRule.
