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
161
162
163
164
165
166
167
168
169
170
171
|
# TODO: probably broken scope unanswered(user)
# Model storing answers for questions with text content.
# Hooks:
# * New question is approved if and only if user (relation) is nil or
# administrator
# * When new approved question is created all recruits that should answer it
# are notified
# * When question is marked as approved all recruits that should answer it
# are notified
class Question < ActiveRecord::Base
hobo_model # Don't put anything above this
fields do
title :string, :null => false
documentation :string
approved :boolean, :default => false
timestamps
end
attr_readonly :user
validates_presence_of :title
validates_length_of :title, :minimum => 2
#allow empty documentation and no category
#maybe add a page for not complete questions
belongs_to :user, :creator => true
belongs_to :question_category
belongs_to :question_group
has_many :answers
has_one :reference_answer, :class_name => "Answer", :conditions => ["answers.reference = ?", true]
has_many :user_question_groups
has_one :question_content_text
has_one :question_content_multiple_choice
has_one :question_content_email
multi_permission :create, :update, :destroy do
# Allow changes if user is administrator
return true if acting_user.administrator?
# if user owns question and it isn't approved yet
if !approved && user_is?(acting_user)
# everything is changed when it's a new record
return true if new_record?
# when it's not new record allow changing only some properties
return only_changed?(:title, :content, :documentation, :question_category)
end
false
end
def view_permitted?(field)
# Don't allow viewing some fields on creation
return false if new_record? && [:user, :approved].include?(field)
# Unapproved questions can be seen only by recruiters and owner
if !approved
return user_is?(acting_user) || acting_user.role.is_recruiter?
end
# Allow viewing ungrouped questions to everybody
return true if question_group.nil?
# Deny viewing grouped qestions to guests, so we can assume that
# acting_user is valid User instance in next tests
return false unless acting_user.signed_up?
# Allow viewing all questions to recruiters
return true if acting_user.role.is_recruiter?
# Allow viewing grouped question if it's associated with user
return true if (UserQuestionGroup.find_by_user_and_question(acting_user.id, id).count) > 0
# Allow viewing grouped question if one of user's recruits is associated with it
return true if (UserQuestionGroup.find_by_mentor_and_question(acting_user.id, id).count) > 0
false
end
named_scope :unanswered_ungrouped, lambda { |uid|{
:joins => {:question_category => :user_categories},
:conditions => [ 'user_categories.user_id = ? AND questions.question_group_id IS NULL ' +
'AND NOT EXISTS (' +
'SELECT * FROM answers WHERE answers.owner_id = ? AND answers.question_id = questions.id)',
uid,uid]}}
named_scope :unanswered_grouped, lambda { |uid|{
:joins => :user_question_groups,
:conditions => [ 'user_question_groups.user_id = ? AND NOT EXISTS (
SELECT * FROM answers WHERE answers.owner_id = ? AND answers.question_id = questions.id)',
uid, uid]}}
named_scope :user_questions_in_group, lambda { |user_id, group_id| {
:joins => {:user_question_groups => :user}, :conditions =>
['questions.question_group_id = ? AND users.id = ?', group_id, user_id]}}
named_scope :id_is_not, lambda { |id|{
:conditions => ['questions.id != ?', id]}}
named_scope :ungrouped_questions_of_user, lambda { |user_id|{
:joins => {:question_category => :user_categories},
:conditions => ['user_categories.user_id = ? AND questions.question_group_id IS NULL', user_id]}}
named_scope :grouped_questions_of_user, lambda { |user_id|{
:joins => {:user_question_groups => :user}, :conditions =>
['users.id = ?', user_id]}}
named_scope :suggested_questions, lambda { |user_id|{
:conditions => { :user_id => user_id, :approved => false }}}
named_scope :unanswered, lambda { |uid|{
:joins => {:question_category => {:user_categories => :user}},
:conditions => [ 'users.id = ? AND NOT EXISTS ( ' +
'SELECT * FROM answers WHERE answers.owner_id = ? AND answers.question_id = questions.id)', uid, uid]}}
named_scope :with_content, :include => [:question_content_text,
:question_content_multiple_choice, :question_content_email], :conditions =>
'question_content_texts.id IS NOT NULL OR question_content_multiple_choices.id
IS NOT NULL OR question_content_emails.id IS NOT NULL'
named_scope :questions_to_approve, :conditions => { :approved => false }
named_scope :multiple_choice, :joins => :question_content_multiple_choice
# Returns true if user gave a non-reference answer for the question,
# otherwise returns false or nil.
def answered?(user)
answers.owner_is(user).not_reference.count > 0 if user.signed_up?
end
# If user is signed up and answered question returns (a non-reference answer)
# returns the answer. Returns nil otherwise.
def answer_of(user)
answers.owner_is(user).not_reference.first if user.signed_up?
end
# Returns content of question if there is one or nil if there isn't.
def content
question_content_text ||
question_content_multiple_choice ||
question_content_email
end
before_create{ |question|
if question.user._?.administrator? || question.user_id.nil?
question.approved = true
end
}
after_create :notify_new_question
after_update :notify_approved_question
protected
# Sends notification about new question (TODO: check for group).
def notify_new_question
# If question category isn't assigned don't try to access it
if question_category && approved
for user in question_category.users
UserMailer.deliver_new_question user, self
end
end
end
# Sends notification about new question (TODO: check for group).
def notify_approved_question
if question_category && !approved_was && approved
notify_new_question
end
end
end
|
GitWeb