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

Dear Cictani:

Thank you for your detailed information.

Just to be clarified, I need to mention that in one reaction, one stoichiometry belongs to only one metabolites. But one metabolite might involves in multiple reactions.

For example: a + 2b +c -> c + 3d(the number before each letter is called stoichiometry)

and also, a + b -> d + e + f

also, a + c + d -> h + j + k

so, as you see, a participates in three reactions, and c not only functions as reactant(which is, on the left side of equation), but also functions as production(right side)

So, after I clarified this situation, is your method, which to create another class, still working?

Sorry to bother you again and thank you for your patience!

Best regards,

Shawn

在 2018年3月26日星期一 UTC+2上午6:29:05，Cictani写道：

Hi,

yes you can create a new python file in your app folder in order to run it you can enter django shell:

python manage.py shell

Let's say your app is called 'chem' and your file is called 'helpers.py' in there you have defined a function called: 'convert_reactions_meta'.

Then you can run ist by

from chem.helpers import convert_reactions_meta
convert_reactions_meta()

Django will automatically create all missing tables if you run

python manage.py makemigrations
python manage.py migrate

You first have to do the database migration than write the script which converts the data.

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