1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
# == Mentionable concern
#
# Contains functionality related to objects that can mention Users, Issues, MergeRequests, or Commits by
# GFM references.
#
# Used by Issue, Note, MergeRequest, and Commit.
#
module Mentionable
extend ActiveSupport::Concern
module ClassMethods
# Indicate which attributes of the Mentionable to search for GFM references.
def attr_mentionable(*attrs)
mentionable_attrs.concat(attrs.map(&:to_s))
end
# Accessor for attributes marked mentionable.
def mentionable_attrs
@mentionable_attrs ||= []
end
end
included do
if self < Participable
participant ->(current_user) { mentioned_users(current_user, load_lazy_references: false) }
end
end
# Returns the text used as the body of a Note when this object is referenced
#
# By default this will be the class name and the result of calling
# `to_reference` on the object.
def gfm_reference(from_project = nil)
# "MergeRequest" > "merge_request" > "Merge request" > "merge request"
friendly_name = self.class.to_s.underscore.humanize.downcase
"#{friendly_name} #{to_reference(from_project)}"
end
# Construct a String that contains possible GFM references.
def mentionable_text
self.class.mentionable_attrs.map { |attr| send(attr) }.compact.join("\n\n")
end
# The GFM reference to this Mentionable, which shouldn't be included in its #references.
def local_reference
self
end
def all_references(current_user = self.author, text = self.mentionable_text, load_lazy_references: true)
ext = Gitlab::ReferenceExtractor.new(self.project, current_user, load_lazy_references: load_lazy_references)
ext.analyze(text)
ext
end
def mentioned_users(current_user = nil, load_lazy_references: true)
all_references(current_user, load_lazy_references: load_lazy_references).users
end
# Extract GFM references to other Mentionables from this Mentionable. Always excludes its #local_reference.
def referenced_mentionables(current_user = self.author, text = self.mentionable_text, load_lazy_references: true)
return [] if text.blank?
refs = all_references(current_user, text, load_lazy_references: load_lazy_references)
(refs.issues + refs.merge_requests + refs.commits) - [local_reference]
end
# Create a cross-reference Note for each GFM reference to another Mentionable found in +mentionable_text+.
def create_cross_references!(author = self.author, without = [], text = self.mentionable_text)
refs = referenced_mentionables(author, text)
# We're using this method instead of Array diffing because that requires
# both of the object's `hash` values to be the same, which may not be the
# case for otherwise identical Commit objects.
refs.reject! { |ref| without.include?(ref) || cross_reference_exists?(ref) }
refs.each do |ref|
SystemNoteService.cross_reference(ref, local_reference, author)
end
end
# When a mentionable field is changed, creates cross-reference notes that
# don't already exist
def create_new_cross_references!(author = self.author)
changes = detect_mentionable_changes
return if changes.empty?
original_text = changes.collect { |_, vals| vals.first }.join(' ')
preexisting = referenced_mentionables(author, original_text)
create_cross_references!(author, preexisting)
end
private
# Returns a Hash of changed mentionable fields
#
# Preference is given to the `changes` Hash, but falls back to
# `previous_changes` if it's empty (i.e., the changes have already been
# persisted).
#
# See ActiveModel::Dirty.
#
# Returns a Hash.
def detect_mentionable_changes
source = (changes.present? ? changes : previous_changes).dup
mentionable = self.class.mentionable_attrs
# Only include changed fields that are mentionable
source.select { |key, val| mentionable.include?(key) }
end
# Determine whether or not a cross-reference Note has already been created between this Mentionable and
# the specified target.
def cross_reference_exists?(target)
SystemNoteService.cross_reference_exists?(target, local_reference)
end
end
|
