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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
# == Mentionable concern
#
# Contains functionality related to objects that can mention Users, Issues, MergeRequests, Commits or Snippets 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(attr, options = {})
attr = attr.to_s
mentionable_attrs << [attr, options]
end
end
included do
# Accessor for attributes marked mentionable.
cattr_accessor :mentionable_attrs, instance_accessor: false do
[]
end
if self < Participable
participant -> (user, ext) { all_references(user, extractor: ext) }
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
# The GFM reference to this Mentionable, which shouldn't be included in its #references.
def local_reference
self
end
def all_references(current_user = nil, extractor: nil)
@extractors ||= {}
# Use custom extractor if it's passed in the function parameters.
if extractor
@extractors[current_user] = extractor
else
extractor = @extractors[current_user] ||= Gitlab::ReferenceExtractor.new(project, current_user)
extractor.reset_memoized_values
end
self.class.mentionable_attrs.each do |attr, options|
text = __send__(attr)
options = options.merge(
cache_key: [self, attr],
author: author,
skip_project_check: skip_project_check?
)
extractor.analyze(text, options)
end
extractor
end
def mentioned_users(current_user = nil)
all_references(current_user).users
end
def directly_addressed_users(current_user = nil)
all_references(current_user).directly_addressed_users
end
# Extract GFM references to other Mentionables from this Mentionable. Always excludes its #local_reference.
def referenced_mentionables(current_user = self.author)
return [] unless matches_cross_reference_regex?
refs = all_references(current_user)
refs = (refs.issues + refs.merge_requests + refs.commits)
# 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| ref == local_reference }
end
# Uses regex to quickly determine if mentionables might be referenced
# Allows heavy processing to be skipped
def matches_cross_reference_regex?
reference_pattern = if !project || project.default_issues_tracker?
ReferenceRegexes::DEFAULT_PATTERN
else
ReferenceRegexes::EXTERNAL_PATTERN
end
self.class.mentionable_attrs.any? do |attr, _|
__send__(attr) =~ reference_pattern
end
end
# Create a cross-reference Note for each GFM reference to another Mentionable found in the +mentionable_attrs+.
def create_cross_references!(author = self.author, without = [])
refs = referenced_mentionables(author)
# 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?
create_cross_references!(author)
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.map { |attr, options| attr }
# 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
def skip_project_check?
false
end
end
|
