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stungeye/board_game.rb

Created March 16, 2018 21:41
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Has Many Through With ActiveAdmin on Rails
Raw
board_game.rb
# app/models/board_game.rb
class BoardGame < ApplicationRecord
has_many :board_game_categories
has_many :categories, through: :board_game_categories
## This line was added:
accepts_nested_attributes_for :board_game_categories, allow_destroy: true
has_many :board_game_mechanics
has_many :mechanics, through: :board_game_mechanics
has_many :board_game_designers
has_many :designers, through: :board_game_designers
validates :name, presence: true, uniqueness: true
end
Raw
board_games.rb
# app/admin/board_games.rb
ActiveAdmin.register BoardGame do
permit_params :name, board_game_categories_attributes: [:id, :board_game_id, :category_id, :_destroy]
index do
selectable_column
column :id
column :name
column :rank
column :categories do |board_game|
board_game.categories.map { |bg| bg.name }.join(", ").html_safe
end
actions
end
show do |board_game|
attributes_table do
row :name
row :rank
row :categories do |board_game|
board_game.categories.map { |bg| bg.name }.join(", ").html_safe
end
end
end
form do |f|
f.semantic_errors *f.object.errors.keys
f.inputs "Board Game" do
f.input :name
f.input :rank
f.has_many :board_game_categories, allow_destroy: true do |n_f|
n_f.input :category
end
end
f.actions
end
end
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