How to populate fields generated by modelformset_factory with data from database

[Michael Klassen]

Hello:

I am using modelformset_factory to generate my form based on a model.  If the user submits a page, then returns to it later, I would like to populate the fields with what they previously answered.  I can only find examples of pre-populated fields with the extra forms; is there a way to do this with the first form?

Thank you.

--michael

[Integr@te System]

Hi Michael,

You can read queryset combine with model in modelformset_factory() method to get exact user and/or any fields you need as existed instance or base on cookies or sth like that to identify your user, depend on your use case(ex trigger events or choose one option...). Hope it helpful.

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[Michael Klassen]

Hi, thank you for your response but I need some more specifics.  My queryset includes the questions which the form presents to the user.  How do I get their responses included in the queryset?  Do I have to somehow join tables to get both questions and responses?  If I follow the relationships in the queryset, I see that I can filter and find the responses, but how do I get Django to fill the form fields with the responses?

Thank you!

On Friday, August 7, 2020 at 10:24:21 AM UTC-4, Integr@te System wrote:

Hi Michael,

You can read queryset combine with model in modelformset_factory() method to get exact user and/or any fields you need as existed instance or base on cookies or sth like that to identify your user, depend on your use case(ex trigger events or choose one option...). Hope it helpful.

On Fri, Aug 7, 2020, 6:46 PM Michael Klassen <mjkl...@gmail.com> wrote:

Hello:

I am using modelformset_factory to generate my form based on a model.  If the user submits a page, then returns to it later, I would like to populate the fields with what they previously answered.  I can only find examples of pre-populated fields with the extra forms; is there a way to do this with the first form?

Thank you.

--michael

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[Integr@te System]

Hi Micheal,

https://docs.djangoproject.com/en/3.0/topics/forms/formsets/

You see in doc with example such as custom queryset, initial data get from existed instances all base on your design and codebase.

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