Sports App - Basic Data Model

dat_model.rb

class Tournament
    has_many :matches, inverse_of: :tournament
    has_many :teams, through: :matches, source: :teams
end

class Team
    has_many :team_match_participations

    has_many :matches, through: :team_match_participations, source: :match
    has_many :players
end

class Match
  has_many :team_match_participations

  has_many :teams, through: :team_match_participations
  belongs_to :tournament
end

class TeamMatchParticipation
    belongs_to :team
    belongs_to :match
end

Association Diagram