On 4/06/2021 1:39 pm, Mike Dewhirst wrote:
On 4/06/2021 11:34 am, frank dilorenzo wrote:
I have the following conditions.
A supplier can have many shipments.
A shipment can have many species.
A shipment can have only one supplier.
Species can belong to many shipments.

supplier 1:n shipment
shipment n:m species

shipment has FK to supplier

species has m2m field with shipment

The latter implements a connecting table between species and shipment which can be expanded to carry additional information if you need to include anything related to a particular shipment + species

In all this I refer to the word species in its singular sense. E.g., we are members of the human species.




No matter how I try I can't seem to configure the models correctly.  I was hoping someone could help me on this.

Thank you.
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