old_contents: from caminae.core.forms import TopologyMixinForm
  
  from .models import (PhysicalEdge, LandEdge, CompetenceEdge, WorkManagementEdge,
                      SignageManagementEdge)
  
  
  class PhysicalEdgeForm(TopologyMixinForm):
      modelfields = (
              'physical_type',
              )
      geomfields = ('geom', )
      
      class Meta:
          model = PhysicalEdge
          exclude = ('deleted', 'kind', 'troncons', 'offset')
  
  
  class LandEdgeForm(TopologyMixinForm):
      modelfields = (
              'land_type',
              )
      geomfields = ('geom', )
      
      class Meta:
          model = LandEdge
          exclude = ('deleted', 'kind', 'troncons', 'offset')
  
      
  class CompetenceEdgeForm(TopologyMixinForm):
      modelfields = (
              'organization',
              )
      geomfields = ('geom', )
      
      class Meta:
          model = CompetenceEdge
          exclude = ('deleted', 'kind', 'troncons', 'offset')
  
  
  class WorkManagementEdgeForm(TopologyMixinForm):
      modelfields = (
              'organization',
              )
      geomfields = ('geom', )
      
      class Meta:
          model = WorkManagementEdge
          exclude = ('deleted', 'kind', 'troncons', 'offset')
  
  
  class SignageManagementEdgeForm(TopologyMixinForm):
      modelfields = (
              'organization',
              )
      geomfields = ('geom', )
      
      class Meta:
          model = SignageManagementEdge
          exclude = ('deleted', 'kind', 'troncons', 'offset')
  
new_contents: from caminae.core.forms import TopologyMixinForm
  
  from .models import (PhysicalEdge, LandEdge, CompetenceEdge, WorkManagementEdge,
                      SignageManagementEdge)
  
  
  class PhysicalEdgeForm(TopologyMixinForm):
      modelfields = ('physical_type',)
  
      class Meta(TopologyMixinForm.Meta):
          model = PhysicalEdge
  
  
  class LandEdgeForm(TopologyMixinForm):
      modelfields = ('land_type',)
  
      class Meta(TopologyMixinForm.Meta):
          model = LandEdge
  
      
  class CompetenceEdgeForm(TopologyMixinForm):
      modelfields = ('organization',)
  
      class Meta(TopologyMixinForm.Meta):
          model = CompetenceEdge
  
  
  class WorkManagementEdgeForm(TopologyMixinForm):
      modelfields = ('organization',)
  
      class Meta(TopologyMixinForm.Meta):
          model = WorkManagementEdge
  
  
  class SignageManagementEdgeForm(TopologyMixinForm):
      modelfields = ('organization',)
  
      class Meta(TopologyMixinForm.Meta):
          model = SignageManagementEdge
  
subject: Refactor land forms (ref #141)