gitlab-org--gitlab-foss/app/models/concerns/issuable.rb
2019-03-04 19:44:46 +01:00

397 lines
13 KiB
Ruby

# frozen_string_literal: true
# == Issuable concern
#
# Contains common functionality shared between Issues and MergeRequests
#
# Used by Issue, MergeRequest
#
module Issuable
extend ActiveSupport::Concern
include Gitlab::SQL::Pattern
include Redactable
include CacheMarkdownField
include Participable
include Mentionable
include Subscribable
include StripAttribute
include Awardable
include Taskable
include Importable
include Editable
include AfterCommitQueue
include Sortable
include CreatedAtFilterable
include UpdatedAtFilterable
include ClosedAtFilterable
# This object is used to gather issuable meta data for displaying
# upvotes, downvotes, notes and closing merge requests count for issues and merge requests
# lists avoiding n+1 queries and improving performance.
IssuableMeta = Struct.new(:upvotes, :downvotes, :user_notes_count, :merge_requests_count)
included do
cache_markdown_field :title, pipeline: :single_line
cache_markdown_field :description, issuable_state_filter_enabled: true
redact_field :description
belongs_to :author, class_name: 'User'
belongs_to :updated_by, class_name: 'User'
belongs_to :last_edited_by, class_name: 'User'
belongs_to :milestone
has_many :notes, as: :noteable, inverse_of: :noteable, dependent: :destroy do # rubocop:disable Cop/ActiveRecordDependent
def authors_loaded?
# We check first if we're loaded to not load unnecessarily.
loaded? && to_a.all? { |note| note.association(:author).loaded? }
end
def award_emojis_loaded?
# We check first if we're loaded to not load unnecessarily.
loaded? && to_a.all? { |note| note.association(:award_emoji).loaded? }
end
end
has_many :label_links, as: :target, dependent: :destroy, inverse_of: :target # rubocop:disable Cop/ActiveRecordDependent
has_many :labels, through: :label_links
has_many :todos, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
has_one :metrics
delegate :name,
:email,
:public_email,
to: :author,
allow_nil: true,
prefix: true
delegate :name,
:email,
:public_email,
to: :assignee,
allow_nil: true,
prefix: true
validates :author, presence: true
validates :title, presence: true, length: { maximum: 255 }
validate :milestone_is_valid
scope :authored, ->(user) { where(author_id: user) }
scope :recent, -> { reorder(id: :desc) }
scope :of_projects, ->(ids) { where(project_id: ids) }
scope :of_milestones, ->(ids) { where(milestone_id: ids) }
scope :any_milestone, -> { where('milestone_id IS NOT NULL') }
scope :with_milestone, ->(title) { left_joins_milestones.where(milestones: { title: title }) }
scope :opened, -> { with_state(:opened) }
scope :only_opened, -> { with_state(:opened) }
scope :closed, -> { with_state(:closed) }
scope :left_joins_milestones, -> { joins("LEFT OUTER JOIN milestones ON #{table_name}.milestone_id = milestones.id") }
scope :order_milestone_due_desc, -> { left_joins_milestones.reorder('milestones.due_date IS NULL, milestones.id IS NULL, milestones.due_date DESC') }
scope :order_milestone_due_asc, -> { left_joins_milestones.reorder('milestones.due_date IS NULL, milestones.id IS NULL, milestones.due_date ASC') }
scope :without_label, -> { joins("LEFT OUTER JOIN label_links ON label_links.target_type = '#{name}' AND label_links.target_id = #{table_name}.id").where(label_links: { id: nil }) }
scope :any_label, -> { joins(:label_links).group(:id) }
scope :join_project, -> { joins(:project) }
scope :inc_notes_with_associations, -> { includes(notes: [:project, :author, :award_emoji]) }
scope :references_project, -> { references(:project) }
scope :non_archived, -> { join_project.where(projects: { archived: false }) }
attr_mentionable :title, pipeline: :single_line
attr_mentionable :description
participant :author
participant :notes_with_associations
strip_attributes :title
# We want to use optimistic lock for cases when only title or description are involved
# http://api.rubyonrails.org/classes/ActiveRecord/Locking/Optimistic.html
def locking_enabled?
title_changed? || description_changed?
end
def allows_multiple_assignees?
false
end
def has_multiple_assignees?
assignees.count > 1
end
def milestone_available?
project_id == milestone&.project_id || project.ancestors_upto.compact.include?(milestone&.group)
end
private
def milestone_is_valid
errors.add(:milestone_id, message: "is invalid") if milestone_id.present? && !milestone_available?
end
end
class_methods do
# Searches for records with a matching title.
#
# This method uses ILIKE on PostgreSQL and LIKE on MySQL.
#
# query - The search query as a String
#
# Returns an ActiveRecord::Relation.
def search(query)
fuzzy_search(query, [:title])
end
# Searches for records with a matching title or description.
#
# This method uses ILIKE on PostgreSQL and LIKE on MySQL.
#
# query - The search query as a String
# matched_columns - Modify the scope of the query. 'title', 'description' or joining them with a comma.
#
# Returns an ActiveRecord::Relation.
def full_search(query, matched_columns: 'title,description')
allowed_columns = [:title, :description]
matched_columns = matched_columns.to_s.split(',').map(&:to_sym)
matched_columns &= allowed_columns
# Matching title or description if the matched_columns did not contain any allowed columns.
matched_columns = [:title, :description] if matched_columns.empty?
fuzzy_search(query, matched_columns)
end
def sort_by_attribute(method, excluded_labels: [])
sorted =
case method.to_s
when 'downvotes_desc' then order_downvotes_desc
when 'label_priority' then order_labels_priority(excluded_labels: excluded_labels)
when 'label_priority_desc' then order_labels_priority('DESC', excluded_labels: excluded_labels)
when 'milestone', 'milestone_due_asc' then order_milestone_due_asc
when 'milestone_due_desc' then order_milestone_due_desc
when 'popularity', 'popularity_desc' then order_upvotes_desc
when 'popularity_asc' then order_upvotes_asc
when 'priority', 'priority_asc' then order_due_date_and_labels_priority(excluded_labels: excluded_labels)
when 'priority_desc' then order_due_date_and_labels_priority('DESC', excluded_labels: excluded_labels)
when 'upvotes_desc' then order_upvotes_desc
else order_by(method)
end
# Break ties with the ID column for pagination
sorted.with_order_id_desc
end
def order_due_date_and_labels_priority(direction = 'ASC', excluded_labels: [])
# The order_ methods also modify the query in other ways:
#
# - For milestones, we add a JOIN.
# - For label priority, we change the SELECT, and add a GROUP BY.#
#
# After doing those, we need to reorder to the order we want. The existing
# ORDER BYs won't work because:
#
# 1. We need milestone due date first.
# 2. We can't ORDER BY a column that isn't in the GROUP BY and doesn't
# have an aggregate function applied, so we do a useless MIN() instead.
#
milestones_due_date = 'MIN(milestones.due_date)'
order_milestone_due_asc
.order_labels_priority(excluded_labels: excluded_labels, extra_select_columns: [milestones_due_date])
.reorder(Gitlab::Database.nulls_last_order(milestones_due_date, direction),
Gitlab::Database.nulls_last_order('highest_priority', direction))
end
def order_labels_priority(direction = 'ASC', excluded_labels: [], extra_select_columns: [])
params = {
target_type: name,
target_column: "#{table_name}.id",
project_column: "#{table_name}.#{project_foreign_key}",
excluded_labels: excluded_labels
}
highest_priority = highest_label_priority(params).to_sql
select_columns = [
"#{table_name}.*",
"(#{highest_priority}) AS highest_priority"
] + extra_select_columns
select(select_columns.join(', '))
.group(arel_table[:id])
.reorder(Gitlab::Database.nulls_last_order('highest_priority', direction))
end
def with_label(title, sort = nil)
if title.is_a?(Array) && title.size > 1
joins(:labels).where(labels: { title: title }).group(*grouping_columns(sort)).having("COUNT(DISTINCT labels.title) = #{title.size}")
else
joins(:labels).where(labels: { title: title })
end
end
# Includes table keys in group by clause when sorting
# preventing errors in postgres
#
# Returns an array of arel columns
def grouping_columns(sort)
grouping_columns = [arel_table[:id]]
if %w(milestone_due_desc milestone_due_asc milestone).include?(sort)
milestone_table = Milestone.arel_table
grouping_columns << milestone_table[:id]
grouping_columns << milestone_table[:due_date]
end
grouping_columns
end
def to_ability_name
model_name.singular
end
def parent_class
::Project
end
end
def today?
Date.today == created_at.to_date
end
def new?
today? && created_at == updated_at
end
def open?
opened?
end
def overdue?
return false unless respond_to?(:due_date)
due_date.try(:past?) || false
end
def user_notes_count
if notes.loaded?
# Use the in-memory association to select and count to avoid hitting the db
notes.to_a.count { |note| !note.system? }
else
# do the count query
notes.user.count
end
end
def subscribed_without_subscriptions?(user, project)
participants(user).include?(user)
end
def to_hook_data(user, old_associations: {})
changes = previous_changes
if old_associations
old_labels = old_associations.fetch(:labels, [])
old_assignees = old_associations.fetch(:assignees, [])
if old_labels != labels
changes[:labels] = [old_labels.map(&:hook_attrs), labels.map(&:hook_attrs)]
end
if old_assignees != assignees
if self.is_a?(Issue)
changes[:assignees] = [old_assignees.map(&:hook_attrs), assignees.map(&:hook_attrs)]
else
changes[:assignee] = [old_assignees&.first&.hook_attrs, assignee&.hook_attrs]
end
end
if self.respond_to?(:total_time_spent)
old_total_time_spent = old_associations.fetch(:total_time_spent, nil)
if old_total_time_spent != total_time_spent
changes[:total_time_spent] = [old_total_time_spent, total_time_spent]
end
end
end
Gitlab::HookData::IssuableBuilder.new(self).build(user: user, changes: changes)
end
def labels_array
labels.to_a
end
def label_names
labels.order('title ASC').pluck(:title)
end
# Convert this Issuable class name to a format usable by Ability definitions
#
# Examples:
#
# issuable.class # => MergeRequest
# issuable.to_ability_name # => "merge_request"
def to_ability_name
self.class.to_ability_name
end
# Returns a Hash of attributes to be used for Twitter card metadata
def card_attributes
{
'Author' => author.try(:name),
'Assignee' => assignee.try(:name)
}
end
def notes_with_associations
# If A has_many Bs, and B has_many Cs, and you do
# `A.includes(b: :c).each { |a| a.b.includes(:c) }`, sadly ActiveRecord
# will do the inclusion again. So, we check if all notes in the relation
# already have their authors loaded (possibly because the scope
# `inc_notes_with_associations` was used) and skip the inclusion if that's
# the case.
includes = []
includes << :author unless notes.authors_loaded?
includes << :award_emoji unless notes.award_emojis_loaded?
if includes.any?
notes.includes(includes)
else
notes
end
end
def updated_tasks
Taskable.get_updated_tasks(old_content: previous_changes['description'].first,
new_content: description)
end
##
# Method that checks if issuable can be moved to another project.
#
# Should be overridden if issuable can be moved.
#
def can_move?(*)
false
end
##
# Override in issuable specialization
#
def first_contribution?
false
end
def ensure_metrics
self.metrics || create_metrics
end
##
# Overridden in MergeRequest
#
def wipless_title_changed(old_title)
old_title != title
end
end