combinations saved to model?

Hi,

I am in the process of building a league management app.

I currently have seasons, leagues and teams that are all working fine. I
can create a new season, add the leagues that are playing in it and the
teams that play within each of the leagues.

What I now want to do is create fixtures for the teams. I have generated
a fixtures model and associated it with teams (has_many :teams) and
teams with fixtures (has_many :fixtures).

What I would like to be able to do when a user sets up the fixtures he
can just press a submit button that will generate all of the fixtures
between the teams (each team plays the other twice). I have been able,
using .permutations (get_team_combinations =
Team.names.permutation(2).to_a) to generate an array of fixtures but I
am stumped as
to how it would be possible to have each of these entries in the array
saved as a fixture in the database.

Anybody got any ideas how this is possible or an alternative way of
generating the fixtures?

Thanks for help in advance! :slight_smile:

Hi,

I am in the process of building a league management app.

I currently have seasons, leagues and teams that are all working fine. I
can create a new season, add the leagues that are playing in it and the
teams that play within each of the leagues.

What I now want to do is create fixtures for the teams. I have generated
a fixtures model and associated it with teams (has_many :teams) and
teams with fixtures (has_many :fixtures).

What I would like to be able to do when a user sets up the fixtures he
can just press a submit button that will generate all of the fixtures
between the teams (each team plays the other twice). I have been able,
using .permutations (get_team_combinations =
Team.names.permutation(2).to_a) to generate an array of fixtures but I
am stumped as
to how it would be possible to have each of these entries in the array
saved as a fixture in the database.

well rather than permuting the names, i'd work with the teams
directly, i.e.

Team.all.permutation(2) do |team1, team2|
  Fixture.create(...)
end

and then in that block create the fixture object for team1 versus team
2. Note that if you had teams a,b,c then you'll get both a,b and b,a
as 2 different permutations. This might be what you want (e.g. if in a
season each pair meets twice, swapping who is the home team and who is
the away team), but if it isn't then try using combination instead of
permutation

Fred