How can I access obj in admin.py

[Mike Dewhirst]

I want to adjust inlines based on a property of the object.

class SubstanceAdmin(admin.ModelAdmin):

    class SolidInline(admin.StackedInline):
        pass
    class LiquidInline(admin.StackedInline):
        pass
    class GasInline(admin.StackedInline):
        pass

    inlines = get_inlines

    def get_inlines(self):
        obj = how_do_I_get_this(?)
        if obj.physical_state = None:
            return ((SolidInline), (LiquidInline), (GasInline))
        elif obj.physical_state = 1:
            return ((SolidInline), )
        elif obj.physical_state = 2:
            return ((LiquidInline), )
        elif obj.physical_state = 3:
            return ((GasInline), )

Many thanks for a miracle :)

Mike

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