Store multiple objects into one record - ruby-on-rails

Question

I have a angular/rails app in which users can search for a movie, and then add that movie to their watchlist.
This is the create function in angular,
createMovie.create({
release_date: releaseNL.release_date,
imdb_rating: $scope.movieImdbRating.imdbRating,
title: $scope.movieListID.original_title,
image: $scope.movieListID.poster_path,
movie_id: $scope.movieListID.id,
backdrop: $scope.movieListID.backdrop_path,
crew: $scope.movieCrew = response.credits.crew,
cast: $scope.movieCast = response.credits.cast
}).then(init);
And I have the cast and crew data in a scope,
$scope.movieCrew = response.credits.crew
$scope.movieCast = response.credits.cast
These scopes return multple objects, since there are multiple actors etc. involved.
I have a movies_controller.rb that has a create function like this,
def create
#movie = Movie.find_or_create_by movie_params
current_user.movies << #movie
redirect_to :root
current_user.followers.each { |follower| #movie.crete_activity(key: 'movie.create', owner: current_user, recipient: follower) }
end
private
def movie_params
params.require(:movie).permit(
:title,
:image,
:imdb_rating,
:release_date,
:movie_id,
:backdrop
:crew,
:cast
)
end
My movie model looks like this,
create_table "movies", force: :cascade do |t|
t.string "title"
t.string "release_date"
t.string "image"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "movie_id"
t.string "backdrop"
t.string "crew"
t.string "cast"
end
When I run the action the movie record gets created
{"id":26,"title":"The Neon Demon","release_date":"2016-01-21","image":"/gVB7zbrsk9TtLoVI4qob97q9v07.jpg","user_id":null,"created_at":"2016-01-07T12:31:49.956Z","updated_at":"2016-01-07T12:31:49.956Z","movie_id":"301365","backdrop":"/lSojrYBHLwiQQq6xr9Mec9f8wLM.jpg","crew":null,"cast":null}
But the crew and cast values are empty.
I've checked my rails console to see what happens when the movie is created,
Started POST "/movies.json" for 127.0.0.1 at 2016-01-07 13:31:49 +0100
Processing by MoviesController#create as JSON
Parameters: {
"release_date"=>"2016-01-21",
"imdb_rating"=>"N/A",
"title"=>"The Neon Demon",
"image"=>"/gVB7zbrsk9TtLoVI4qob97q9v07.jpg",
"movie_id"=>301365,
"backdrop"=>"/lSojrYBHLwiQQq6xr9Mec9f8wLM.jpg",
"crew"=>[
{"credit_id"=>"54881a95c3a368415c000cde", "department"=>"Directing", id"=>21183, job"=>"Director", name"=>"Nicolas Winding Refn", profile_path"=>"/tFqRY5LgXH6W9GV51xCiJS1y8mB.jpg"},
{"credit_id"=>"54881a9c925141520a000c5b", department"=>"Writing", id"=>21183, job"=>"Screenplay", name"=>"Nicolas Winding Refn", profile_path"=>"/tFqRY5LgXH6W9GV51xCiJS1y8mB.jpg"},
{"credit_id"=>"54881ac8c3a368414d000fd8", department"=>"Writing", ""=>1397141, job"=>"Screenplay", name"=>"Mary Laws", profile_path"=>nil},
{"credit_id"=>"54881ad792514151ff000e94", department"=>"Camera", id"=>63422, job"=>"Director of Photography", name"=>"Philippe Le Sourd", "profile_path"=>nil},
{"credit_id"=>"54881ae5c3a3684148000cc8", department"=>"Sound", id"=>8377, job"=>"Original Music Composer", name"=>"Cliff Martinez",
"profile_path"=>nil},
{"credit_id"=>"56424bf5c3a3686a5800064e", department"=>"Editing", id"=>966286, job"=>"Editor", name"=>"Matthew Newman", profile_path"=>nil}
],
"cast"=>[
{"cast_id"=>5, "character"=>"Jesse", "credit_id"=>"54cd541dc3a3687f8f002102", "id"=>18050, "name"=>"Elle Fanning", "order"=>1, "profile_path"=>"/ouQIwOEVvyDzsU5j0Iw4oRIuGW4.jpg"},
{"cast_id"=>6, "character"=>"Sarah", "credit_id"=>"54cd5425925141475700204d", "id"=>1036288, "name"=>"Abbey Lee", "order"=>2, "profile_path"=>"/tCLVClLA2dB43KdyqJusmcuvvEC.jpg"},
{"cast_id"=>7, "character"=>"", "credit_id"=>"54d3a598c3a3686abf003f08", "id"=>20089, "name"=>"Jena Malone", "order"=>3, "profile_path"=>"/tx5KR6dAhYag3plX7Rdg8t25QrC.jpg"},
{"cast_id"=>8, "character"=>"", "credit_id"=>"54d3a59c9251413fc1003e39", "id"=>6384, "name"=>"Keanu Reeves", "order"=>4, "profile_path"=>"/glCFGnKkX3QWxeLRYUMU1XTESHf.jpg"},
{"cast_id"=>9, "character"=>"", "credit_id"=>"54d3a5a59251413fc1003e3b", "id"=>110014, "name"=>"Christina Hendricks", "order"=>5, "profile_path"=>"/4pAtKssXy84DzJOgl5155KJNS5z.jpg"},
{"cast_id"=>10, "character"=>"", "credit_id"=>"54d3a5ad9251413fd6003e88", "id"=>234982, "name"=>"Bella Heathcote", "order"=>6, "profile_path"=>"/iqk9bZnrkLhIQbHPyrGcMK0Bzni.jpg"}
],
"movie"=>{
"title"=>"The Neon Demon",
"release_date"=>"2016-01-21",
"image"=>"/gVB7zbrsk9TtLoVI4qob97q9v07.jpg",
"movie_id"=>301365,
"backdrop"=>"/lSojrYBHLwiQQq6xr9Mec9f8wLM.jpg",
"crew"=>[
{"credit_id"=>"54881a95c3a368415c000cde", "department"=>"Directing", "id"=>21183, "job"=>"Director", "name"=>"Nicolas Winding Refn", "profile_path"=>"/tFqRY5LgXH6W9GV51xCiJS1y8mB.jpg"},
{"credit_id"=>"54881a9c925141520a000c5b", "department"=>"Writing", "id"=>21183, "job"=>"Screenplay", "name"=>"Nicolas Winding Refn", "profile_path"=>"/tFqRY5LgXH6W9GV51xCiJS1y8mB.jpg"},
{"credit_id"=>"54881ac8c3a368414d000fd8", "department"=>"Writing", "id"=>1397141, "job"=>"Screenplay", "name"=>"Mary Laws", "profile_path"=>nil}, {"credit_id"=>"54881ad792514151ff000e94", "department"=>"Camera", "id"=>63422, "job"=>"Director of Photography", "name"=>"Philippe Le Sourd", "profile_path"=>nil},
{"credit_id"=>"54881ae5c3a3684148000cc8", "department"=>"Sound", "id"=>8377, "job"=>"Original Music Composer", "name"=>"Cliff Martinez", "profile_path"=>nil},
{"credit_id"=>"56424bf5c3a3686a5800064e", "department"=>"Editing", "id"=>966286, "job"=>"Editor", "name"=>"Matthew Newman", "profile_path"=>nil}
],
"cast"=>[
{"cast_id"=>5, "character"=>"Jesse", "credit_id"=>"54cd541dc3a3687f8f002102", "id"=>18050, "name"=>"Elle Fanning", "order"=>1, "profile_path"=>"/ouQIwOEVvyDzsU5j0Iw4oRIuGW4.jpg"},
{"cast_id"=>6, "character"=>"Sarah", "credit_id"=>"54cd5425925141475700204d", "id"=>1036288, "name"=>"Abbey Lee", "order"=>2, "profile_path"=>"/tCLVClLA2dB43KdyqJusmcuvvEC.jpg"},
{"cast_id"=>7, "character"=>"", "credit_id"=>"54d3a598c3a3686abf003f08", "id"=>20089, "name"=>"Jena Malone", "order"=>3, "profile_path"=>"/tx5KR6dAhYag3plX7Rdg8t25QrC.jpg"},
{"cast_id"=>8, "character"=>"", "credit_id"=>"54d3a59c9251413fc1003e39", "id"=>6384, "name"=>"Keanu Reeves", "order"=>4, "profile_path"=>"/glCFGnKkX3QWxeLRYUMU1XTESHf.jpg"},
{"cast_id"=>9, "character"=>"", "credit_id"=>"54d3a5a59251413fc1003e3b", "id"=>110014, "name"=>"Christina Hendricks", "order"=>5, "profile_path"=>"/4pAtKssXy84DzJOgl5155KJNS5z.jpg"},
{"cast_id"=>10, "character"=>"", "credit_id"=>"54d3a5ad9251413fd6003e88", "id"=>234982, "name"=>"Bella Heathcote", "order"=>6, "profile_path"=>"/iqk9bZnrkLhIQbHPyrGcMK0Bzni.jpg"}
]
}
}
As you can see the parameters have the correct values, release_date, title, image, crew, cast etc. But it does not store the objects inside them. Also I'm unsure why there's a movie value in the parameters value that repeats all the data exept for imdbRating.
So my question is, how do I store the objects from crew and cast into the my movie record?