Re: How to undisplay the field with empty value in django admin?

Hi,

I think you have a misconception in your model. What you need is a many to many relation so it does not matter how many metabolites each Reaction has. I am not so fimilar with Chemistry. So each stoichiometry belongs to exactly one metabolite?

if yes you could create an additional Model call it for example StoichiometryMetabolite which has three fields:

stoichiometry = models.CharField(max_length=255, blank=True, null=True)
metabolite = models.ForeignKey('Metabolites', on_delete=models.CASCADE)

reaction = models.ForeignKey('Reactionsmeta', on_delete=models.CASCADE

In your admin.py you have to create an InlineAdmin for StoichiometryMetabolite:

class StoichiometryMetaboliteInline(admin.StackedInline):

model = StoichiometryMetabolite

extra = 6

Than you have to add it to your inlines in your Reactionsmeta admin

 inlines = [StoichiometryMetaboliteInline

Everytime you have numbered columns in your model you should consider refactor it since it is not good database design.

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