Organizer - View Entrant Lists

[ruchali1]

Organizers need to be able to view entrant based on their statuses for certain events #49. Should have the ability to view

• invited entrants #31
• cancelled entrants #32
• final list of entrants #52

For this:

• Query the db to return the entrants who have the specific status when the "View List of [Status name]" is clicked.
• On the view age a list of these entrants should be visible
• Real time updates
• Error messages: If none have been chosen or if db query failed (error handling/validation).