How to design database for fields like google forms?

I want to build forms and models with dynamic fields like Google Form. But I don't know what type of model.Fields use for this task. I using Postgres and I thinking about something like Hstore or ArrayField, but I'm not sure.

What is the best solution for this?

There are few solutions available for your task:

• EAV (Entity-Attribute-Value) model with django-eav package.
• Postgresql HSTORE field but it supports only string type of values.
• Postgresql JSON field.

If you use modern PostgreSQL version (9.3+) you should use PostgreSQL JSON fields because JSON supports different data types.