add DossierProjectionService

This commit is contained in:
simon lehericey 2021-04-21 12:02:57 +02:00
parent 0376ad9564
commit 5bfd4ecbbf
2 changed files with 245 additions and 0 deletions

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class DossierProjectionService
class DossierProjection < Struct.new(:dossier, :columns)
end
TABLE = 'table'
COLUMN = 'column'
# Returns [DossierProjection(dossier, columns)] ordered by dossiers_ids
# and the columns orderd by fields.
#
# It tries to be fast by using `pluck` (or at least `select`)
# to avoid deserializing entire records.
#
# It stores its intermediary queries results in an hash in the corresponding field.
# ex: field_email[:id_value_h] = { dossier_id_1: email_1, dossier_id_3: email_3 }
#
# Those hashes are needed because:
# - the order of the intermediary query results are unknown
# - some values can be missing (if a revision added or removed them)
def self.project(dossiers_ids, fields)
champ_fields, other_fields = fields
.partition { |f| ['type_de_champ', 'type_de_champ_private'].include?(f[TABLE]) }
if champ_fields.present?
Champ
.includes(:type_de_champ)
.where(
# as querying the champs table is costly
# we fetch all the requested champs at once
types_de_champ: { stable_id: champ_fields.map { |f| f[COLUMN] } },
dossier_id: dossiers_ids
)
.select(:dossier_id, :value, :type_de_champ_id, :stable_id) # we cannot pluck :value, as we need the champ.to_s method
.group_by(&:stable_id) # the champs are redispatched to their respective fields
.map do |stable_id, champs|
field = champ_fields.find { |f| f[COLUMN] == stable_id.to_s }
field[:id_value_h] = champs.to_h { |c| [c.dossier_id, c.to_s] }
end
end
other_fields.each do |field|
field[:id_value_h] = case field[TABLE]
when 'self'
Dossier
.where(id: dossiers_ids)
.pluck(:id, field[COLUMN].to_sym)
.to_h { |id, col| [id, col&.strftime('%d/%m/%Y')] }
when 'user'
Dossier
.joins(:user)
.where(id: dossiers_ids)
.pluck('dossiers.id, users.email')
.to_h
when 'individual'
Individual
.where(dossier_id: dossiers_ids)
.pluck(:dossier_id, field[COLUMN].to_sym)
.to_h
when 'etablissement'
Etablissement
.where(dossier_id: dossiers_ids)
.pluck(:dossier_id, field[COLUMN].to_sym)
.to_h
when 'groupe_instructeur'
Dossier
.joins(:groupe_instructeur)
.where(id: dossiers_ids)
.pluck('dossiers.id, groupe_instructeurs.label')
.to_h
when 'followers_instructeurs'
Follow
.active
.joins(instructeur: :user)
.where(dossier_id: dossiers_ids)
.pluck('dossier_id, users.email')
.group_by { |dossier_id, _| dossier_id }
.to_h { |dossier_id, dossier_id_emails| [dossier_id, dossier_id_emails.map { |_, email| email }&.join(', ')] }
end
end
Dossier
.select(:id, :state, :archived) # the dossier object is needed in the view
.find(dossiers_ids) # keeps dossiers_ids order and raise exception if one is missing
.map do |dossier|
DossierProjection.new(dossier, fields.map { |f| f[:id_value_h][dossier.id] })
end
end
end

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describe DossierProjectionService do
describe '#project' do
subject { described_class.project(dossiers_ids, fields) }
context 'with multiple dossier' do
let!(:procedure) { create(:procedure, :with_type_de_champ) }
let!(:dossier_1) { create(:dossier, procedure: procedure) }
let!(:dossier_2) { create(:dossier, procedure: procedure) }
let!(:dossier_3) { create(:dossier, procedure: procedure) }
let(:dossiers_ids) { [dossier_3.id, dossier_1.id, dossier_2.id] }
let(:fields) do
[
{
"table" => "type_de_champ",
"column" => procedure.types_de_champ[0].stable_id.to_s
}
]
end
before do
dossier_1.champs.first.update(value: 'champ_1')
dossier_2.champs.first.update(value: 'champ_2')
dossier_3.champs.first.destroy
end
let(:result) { subject }
it 'respects the dossiers_ids order and returns nil for empty result' do
expect(result.length).to eq(3)
expect(result[0].dossier.id).to eq(dossier_3.id)
expect(result[1].dossier.id).to eq(dossier_1.id)
expect(result[2].dossier.id).to eq(dossier_2.id)
expect(result[0].columns[0]).to be nil
expect(result[1].columns[0]).to eq('champ_1')
expect(result[2].columns[0]).to eq('champ_2')
end
end
context 'attributes by attributes' do
let(:fields) { [{ "table" => table, "column" => column }] }
let(:dossiers_ids) { [dossier.id] }
subject { super()[0].columns[0] }
context 'for self table' do
let(:table) { 'self' }
context 'for created_at column' do
let(:column) { 'created_at' }
let(:dossier) { Timecop.freeze(Time.zone.local(1992, 3, 22)) { create(:dossier) } }
it { is_expected.to eq('22/03/1992') }
end
context 'for en_construction_at column' do
let(:column) { 'en_construction_at' }
let(:dossier) { create(:dossier, :en_construction, en_construction_at: Time.zone.local(2018, 10, 17)) }
it { is_expected.to eq('17/10/2018') }
end
context 'for updated_at column' do
let(:column) { 'updated_at' }
let(:dossier) { create(:dossier) }
before { dossier.touch(time: Time.zone.local(2018, 9, 25)) }
it { is_expected.to eq('25/09/2018') }
end
end
context 'for user table' do
let(:table) { 'user' }
let(:column) { 'email' }
let(:dossier) { create(:dossier, user: create(:user, email: 'bla@yopmail.com')) }
it { is_expected.to eq('bla@yopmail.com') }
end
context 'for individual table' do
let(:table) { 'individual' }
let(:procedure) { create(:procedure, :for_individual, :with_type_de_champ, :with_type_de_champ_private) }
let(:dossier) { create(:dossier, procedure: procedure, individual: create(:individual, nom: 'Martin', prenom: 'Jacques', gender: 'M.')) }
context 'for prenom column' do
let(:column) { 'prenom' }
it { is_expected.to eq('Jacques') }
end
context 'for nom column' do
let(:column) { 'nom' }
it { is_expected.to eq('Martin') }
end
context 'for gender column' do
let(:column) { 'gender' }
it { is_expected.to eq('M.') }
end
end
context 'for etablissement table' do
let(:table) { 'etablissement' }
let(:column) { 'code_postal' } # All other columns work the same, no extra test required
let!(:dossier) { create(:dossier, etablissement: create(:etablissement, code_postal: '75008')) }
it { is_expected.to eq('75008') }
end
context 'for groupe_instructeur table' do
let(:table) { 'groupe_instructeur' }
let(:column) { 'label' }
let!(:dossier) { create(:dossier) }
it { is_expected.to eq('défaut') }
end
context 'for followers_instructeurs table' do
let(:table) { 'followers_instructeurs' }
let(:column) { 'email' }
let(:dossier) { create(:dossier) }
let!(:follow1) { create(:follow, dossier: dossier, instructeur: create(:instructeur, email: 'user1@host')) }
let!(:follow2) { create(:follow, dossier: dossier, instructeur: create(:instructeur, email: 'user2@host')) }
it { is_expected.to eq "user1@host, user2@host" }
end
context 'for type_de_champ table' do
let(:table) { 'type_de_champ' }
let(:dossier) { create(:dossier) }
let(:column) { dossier.procedure.types_de_champ.first.stable_id.to_s }
before { dossier.champs.first.update(value: 'kale') }
it { is_expected.to eq('kale') }
end
context 'for type_de_champ_private table' do
let(:table) { 'type_de_champ_private' }
let(:dossier) { create(:dossier) }
let(:column) { dossier.procedure.types_de_champ_private.first.stable_id.to_s }
before { dossier.champs_private.first.update(value: 'quinoa') }
it { is_expected.to eq('quinoa') }
end
end
end
end