Postal Code not in database

gistfile1.txt

# Get the 2nd project's project_item
(rdb:5) p self.project.project_items[1]
#<ProjectItem id: 8, project_id: 2, product_id: 67, quantity: 1, unit_price: #<BigDecimal:10bde4cc8,'0.25E2',9(18)>, postal_code_of_manufacture: "29729", params: nil, postal_code_of_fabrication: nil>

# Find out how many possible manufacturing locations there are for this project_item
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_m').size
7

# Get all the possible manufacturing locations for this project_item
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_m')
[#<ProductFeature id: 1837, product_feature_type_id: 19, product_id: 67, text_data: "48117", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1838, product_feature_type_id: 19, product_id: 67, text_data: "75109", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1839, product_feature_type_id: 19, product_id: 67, text_data: "52742", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1840, product_feature_type_id: 19, product_id: 67, text_data: "15025", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1841, product_feature_type_id: 19, product_id: 67, text_data: "14456", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1842, product_feature_type_id: 19, product_id: 67, text_data: "93631", numeric_data: nil, position: 0, query: nil, boolean_data: nil>, #<ProductFeature id: 1843, product_feature_type_id: 19, product_id: 67, text_data: "29729", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) 

# The project_items' postal code matches the 7th possible manufacture for this project_item
(rdb:5) p self.postal_code_of_manufacture
"29729"

# The manufacture for this project_item is 'l_m_x_7'

# Find all the extraction locations for this manufacture and find the extraction_location in the postal_codes table

# extraction component #1
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_1_7')
[#<ProductFeature id: 1864, product_feature_type_id: 407, product_id: 67, text_data: "28363", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('28363')
#<PostalCode id: 850253, postal_cd: "28363", country_cd: "US", city_name: "MARSTON", state_abbrv: "NC", latitude: #<BigDecimal:10bdc4130,'0.34980128E2',18(27)>, longitude: #<BigDecimal:10bdc4040,'-0.79620281E2',18(27)>>

# extraction component #2
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_2_7')
[#<ProductFeature id: 1879, product_feature_type_id: 409, product_id: 67, text_data: "82935", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('82935')
#<PostalCode id: 893673, postal_cd: "82935", country_cd: "US", city_name: "GREEN RIVER", state_abbrv: "WY", latitude: #<BigDecimal:10bdc1868,'0.41854493E2',18(27)>, longitude: #<BigDecimal:10bdc1778,'-0.10967476E3',18(27)>>

# extraction component #3
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_3_7')
[#<ProductFeature id: 1894, product_feature_type_id: 411, product_id: 67, text_data: "24649", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('24649')
#<PostalCode id: 847691, postal_cd: "24649", country_cd: "US", city_name: "SWORDS CREEK", state_abbrv: "VA", latitude: #<BigDecimal:10bdbe910,'0.37082042E2',18(27)>, longitude: #<BigDecimal:10bdbe848,'-0.81911316E2',18(27)>>

# extraction component #4
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_4_7')
[#<ProductFeature id: 1909, product_feature_type_id: 413, product_id: 67, text_data: "37723", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('37723')
#<PostalCode id: 858465, postal_cd: "37723", country_cd: "US", city_name: "CRAB ORCHARD", state_abbrv: "TN", latitude: #<BigDecimal:10bdbba58,'0.3596233E2',18(27)>, longitude: #<BigDecimal:10bdbb990,'-0.84809525E2',18(27)>>

# extraction component #5
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_5_7')
[#<ProductFeature id: 1924, product_feature_type_id: 415, product_id: 67, text_data: "37331", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('37331')
#<PostalCode id: 858272, postal_cd: "37331", country_cd: "US", city_name: "ETOWAH", state_abbrv: "TN", latitude: #<BigDecimal:10bdb9000,'0.35331479E2',18(27)>, longitude: #<BigDecimal:10bdb8f10,'-0.8452989E2',18(27)

# extraction component #6    ------  RETURNS a nil. postal code is NOT in database -------
(rdb:5) p self.project.project_items[1].product.product_features_for_type('l_e_6_7')
[#<ProductFeature id: 1939, product_feature_type_id: 417, product_id: 67, text_data: "26729", numeric_data: nil, position: 0, query: nil, boolean_data: nil>]
(rdb:5) PostalCode.find_by_postal_cd('26729')
nil


---- mysql query ----
mysql> select postal_cd from postal_codes where postal_cd = '26729';
Empty set (0.01 sec)