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module Subjects | |
class IndexCareerItemsService < ApplicationService | |
def initialize(user:, query:, page:, per_page:) | |
super() | |
@user = user | |
@page = page || Subjects::PAGE | |
@per_page = per_page || Subjects::PER_PAGE | |
@query = query | |
end | |
def call | |
response(success: true, payload: paginated_items) | |
rescue => error | |
response(error:) | |
end | |
private | |
attr_reader :user, :query, :page, :per_page | |
def paginated_items | |
service = Users::ShowSubjectsService.call(@user) | |
raise(service.error) unless service.success? | |
user_show_subjects = service.payload #esto es un boolean que nos servira como criterio de que se debe mostrar | |
items = | |
if user_show_subjects | |
fetch_career_subjects + fetch_interests | |
else | |
fetch_interests | |
end | |
WillPaginate::Collection.create(@page, @per_page, items.size) do |pager| | |
pager.replace(items.slice(pager.offset, pager.per_page)) | |
end | |
end | |
def fetch_career_subjects | |
fetch_career_subjects = CareerSubject.includes(:subject).where("'documents_count > 0 and status = 'approved'") | |
career_id = @user&.career&.id | |
career_approved = @user&.career&.status == 'approved' | |
university_id = @user&.university&.id | |
university_approved = @user&.university&.status == 'approved' | |
order_sql = [] | |
if university_id && university_approved | |
order_sql << "CASE WHEN university_id = #{university_id} THEN 0 ELSE 1 END" | |
end | |
order_sql << "CASE WHEN career_id = #{career_id} THEN 0 ELSE 1 END" if career_id && career_approved | |
order_sql << 'documents_count DESC' | |
fetch_career_subjects.order(Arel.sql(order_sql.join(','))) | |
fetch_career_subjects.joins(:subject).includes(:subject) | |
if @query | |
fetch_career_subjects = fetch_career_subjects.where('subjects.normalized_name % ?', @query) | |
.reorder(Arel.sql("subjects.normalized_name <-> #{@query}")) | |
end | |
fetch_career_subjects = fetch_career_subjects.joins( | |
"LEFT JOIN follow_career_subjects fc ON fc.career_subject_id = career_subjects.id AND fc.user_id = #{@user.id}" | |
).where(fc: { career_subject_id: nil }) | |
end | |
def fetch_interests | |
fetch_interests = Tag.all | |
.where("normalized_description % #{ActiveRecord::Base.connection.quote(@query)} and documents_count > 0") | |
.order(Arel.sql("normalized_description <-> #{ActiveRecord::Base.connection.quote(@query)}")) | |
.limit(Interests::DEFAULT_LIMIT_SEARCH) | |
.order(documents_count: :desc) | |
if @user | |
followed_tag_ids = FollowTag.where(user_id: @user.id).pluck(:tag_id) # aqui devuelve un array de ids | |
fetch_interests.where.not(id: followed_tag_ids) | |
end | |
end | |
end |
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