Pyblish By Example
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1.8
CVEI I
Because the order of the above technique of (1) collecting, (2) validating and (3) extract-if-valid is so common, they are provided as keywords you can use in-place of a hard-coded number.
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import pyblish.api
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disk = {}
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items = ["JOHN.person", "door.prop"]
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class CollectInstances(pyblish.api.ContextPlugin):
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order = pyblish.api.CollectorOrder # <-- This is new
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def process(self, context):
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for item in items:
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name, suffix = item.split(".")
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context.create_instance(name, family=suffix)
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class ValidateNamingConvention(pyblish.api.InstancePlugin):
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order = pyblish.api.ValidatorOrder
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def process(self, instance):
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name = instance.data["name"]
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assert name == name.title(), "Sorry, %s should have been %s" % (
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name, name.title())
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class ExtractInstances(pyblish.api.InstancePlugin):
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order = pyblish.api.ExtractorOrder
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def process(self, instance):
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disk[instance.data["name"]] = instance
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pyblish.api.register_plugin(CollectInstances)
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pyblish.api.register_plugin(ValidateNamingConvention)
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pyblish.api.register_plugin(ExtractInstances)
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import pyblish.util
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pyblish.util.publish()
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# Sorry, JOHN should have been John
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# Sorry, door should have been Door
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Notice that instead of picking a number at random, we instead utilised the built-in order of CVEI. This not only simplifies determining the role of each plug-in, it also allows Pyblish to make some basic assumptions about your plug-ins, such as when to stop.
These constants are nothing more than integer numbers.
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CollectorOrder: 0
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ValidatorOrder: 1
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ExtractorOrder: 2
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Together, they form the first three letters of "CVEI". We'll look at the last letter next.
Last modified 1yr ago
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