[Racket] Ferti hydroponic nutrient solver, redux.
Fix wrong nutrient-value-set SQL check logic.
db/migrations.rkt
@@ -76,7 +76,7 @@
76
76
(is-null fertilizer_product_id))
77
77
(and (is-null nutrient_measurement_id)
78
78
(is-null crop_requirement_id)
79
Removed:
(is-null fertilizer_product_id))
79
Added:
(is-not-null fertilizer_product_id))
80
80
(and (is-null nutrient_measurement_id)
81
81
(is-not-null crop_requirement_id)
82
82
(is-null fertilizer_product_id)))))