How to build a Q and A forum in Bubble

To build a Q&A forum in Bubble, you create two main data types (Question and Answer), build pages where users can create and view questions, and use repeating groups to list questions and answers. Users submit data through “Create a new thing” actions, and you control who can edit/delete with Privacy Rules. This alone gives you a working forum.

Core Data Structure

Create two data types in the Data tab:

• Question with fields: title (text), details (text), author (User), answers (list of Answers).
• Answer with fields: body (text), author (User), question (Question).

This is enough for a functional forum because Bubble automatically links related data when you save things with referenced fields.

Submitting Questions

On a “New Question” page, place inputs for title and details. Add a button with a workflow:

• Data → Create a new thing, Thing = Question.
• Set fields using the input values and Current User as author.
• Navigate to a Question page that has a Type of content = Question.

// Workflow: Create Question
Create a new Question:
  title = Input Title's value
  details = Input Details's value
  author = Current User

Displaying Questions

Use a repeating group with Type = Question and Data source = Do a search for Questions. Inside, show title, author, and a link to the Question page (send current cell’s Question).

Single Question Page

Set the page’s content type to Question. Display its title and details using “Parent group’s Question”. Add another repeating group for Answers, source = Parent group’s Question’s answers.

Submitting Answers

Below the answer list, add a multiline input and button:

• Create a new Answer with body = input value, author = Current User, question = Parent group’s Question.
• Then Make changes to a thing → Parent group’s Question, add the new Answer to its answers list.

Privacy Rules

In the Privacy tab, in Question and Answer types:

• Allow Everyone to read basic fields.
• Only allow This User is Current User to modify if author = Current User.

This prevents other users from editing or deleting someone else’s content.