adds workaround for creating a dynamic ChoiceField from a model not yet migrated into existence
adds workaround for creating a dynamic ChoiceField from a model not yet migrated into existence

EBI-Metagenomics/emgapi,EBI-Metagenomics/emgapi,EBI-Metagenomics/emgapi,EBI-Metagenomics/emgapi,EBI-Metagenomics/emgapi