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module Effective
module Select2AjaxController
extend ActiveSupport::Concern
def respond_with_select2_ajax(collection, skip_search: false, &block)
raise('collection should be an ActiveRecord::Relation') unless collection.kind_of?(ActiveRecord::Relation)
# Authorize
EffectiveResources.authorize!(self, :index, collection.klass)
# Scope
if collection.respond_to?(:select2_ajax)
collection = collection.select2_ajax
elsif collection.respond_to?(:sorted)
collection = collection.sorted
end
# Search
if (term = params[:term]).present? && !skip_search
columns = collection.klass.new.try(:to_select2_search_columns).presence
collection = Effective::Resource.new(collection).search_any(term, columns: columns)
end
# Paginate
per_page = 50
page = (params[:page] || 1).to_i
last = (collection.reselect(:id).count.to_f / per_page).ceil
more = page < last
offset = [(page - 1), 0].max * per_page
collection = collection.limit(per_page).offset(offset)
# Results
results = collection.map do |resource|
if block_given?
option = yield(resource)
raise('expected a Hash with id and text params') unless option.kind_of?(Hash) && option[:id] && option[:text]
option
else
{ id: resource.to_param, text: resource.try(:to_select2) || resource.to_s }
end
end
# Respond
respond_to do |format|
format.js do
render json: { results: results, pagination: { more: more } }
end
end
end
end
end
Version data entries
67 entries across 67 versions & 1 rubygems