new_contents: from otm1_migrator.migration_rules.standard_otm1 import MIGRATION_RULES
  
  udfs = {
      'plot': {
          'type': 'udf:Plot Type',
          'powerline_conflict_potential': 'udf:Powerlines Overhead',
          'sidewalk_damage': 'udf:Sidewalk Damage'
      },
  
      'tree': {
          'condition': 'udf:Tree Condition',
          'steward_user': 'udf:Tree Steward',
          'sponsor': 'udf:Sponsor'
      }
  }
  
  conversions = {
      'plot': {
          'powerline_conflict_potential': {'1': 'Yes',
                                           '2': 'No',
                                           '3': 'Unknown'},
          'type': {'1': 'Well/Pit',
                   '2': 'Median/Island',
                   '3': 'Tree Lawn',
                   '4': 'Park',
                   '5': 'Planter',
                   '6': 'Other',
                   '7': 'Yard',
                   '8': 'Natural Area'},
  
          'sidewalk_damage': {
              '1': 'Minor or No Damage',
              '2': 'Raised More Than 3/4 Inch'
          }
      },
  
      'tree': {
          'condition': {
              '1': 'Dead',
              '2': 'Critical',
              '3': 'Poor',
              '4': 'Fair',
              '5': 'Good',
              '6': 'Very Good',
              '7': 'Excellent'
          }
      }
  }
  
  MIGRATION_RULES['plot']['removed_fields'] |= {'sunset_zone', 'district'}
  del MIGRATION_RULES['species']['value_transformers']['native_status']
  
  for model in {'plot', 'tree'}:
      MIGRATION_RULES[model]['removed_fields'] -= set(udfs[model].keys())
  
      for otm1name, otm2name in udfs[model].iteritems():
          rules_for_model = MIGRATION_RULES[model]
  
          udfs_fields = rules_for_model['renamed_fields']
          udfs_fields[otm1name] = otm2name
  
          if otm1name in conversions[model]:
              if 'value_transformers' not in rules_for_model:
                  rules_for_model['value_transformers'] = {}
  
              value_transf = rules_for_model['value_transformers']
              value_transf[otm1name] = conversions[model][otm1name].get
  
subject: Add rules for San Diego