[Create] validate required fields

[sadiefinn]

Overview

Validate required fields in create flow

Estimate: 2 hours

Acceptance Criteria

• when a user tries to move to the next screen in create flow, check that all required fields are completed on the current page
• required fields for the guide overview:
  • guide title
  • city name
  • guide cover photo
• required fields for each activity the user has added:
  • activity title
  • activity photo
  • activity location
  • activity duration (hours and minutes)
  • prompt input
• if the user attempts to continue without completing all required fields:
  • they will not move off the current page
  • the missing required fields will be highlighted
  • an error banner will appear
    • the banner should be dismissible
• the "add activity" button should always be clickable

Design Comps

Create - Error

[sadiefinn]

currently blocked bc we're deciding on which behavior to implement fixed!