source: subversion/sites/rails_port/app/models/user.rb @ 4898

Revision 4898, 3.6 KB checked in by dankarran, 7 years ago (diff)

Improving friend capabilities so you can now add and remove friends as you wish. Friends will be notified when you add them. You can view a list of friends on your profile page (which has been reorganised a little).

Line 
1class User < ActiveRecord::Base
2  require 'xml/libxml'
3
4  has_many :traces
5  has_many :diary_entries, :order => 'created_at DESC'
6  has_many :messages, :foreign_key => :to_user_id, :order => 'sent_on DESC'
7  has_many :new_messages, :class_name => "Message", :foreign_key => :to_user_id, :conditions => "message_read = 0", :order => 'sent_on DESC'
8  has_many :friends
9  has_many :tokens, :class_name => "UserToken"
10  has_many :preferences, :class_name => "UserPreference"
11
12  validates_presence_of :email, :display_name
13  validates_confirmation_of :pass_crypt, :message => 'Password must match the confirmation password'
14  validates_uniqueness_of :display_name, :allow_nil => true
15  validates_uniqueness_of :email
16  validates_length_of :pass_crypt, :minimum => 8
17  validates_length_of :display_name, :minimum => 3, :allow_nil => true
18  validates_format_of :email, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i
19  validates_format_of :display_name, :with => /^[^\/;.,?]*$/
20  validates_numericality_of :home_lat, :allow_nil => true
21  validates_numericality_of :home_lon, :allow_nil => true
22  validates_numericality_of :home_zoom, :only_integer => true, :allow_nil => true
23
24  before_save :encrypt_password
25
26  def after_initialize
27    self.creation_time = Time.now if self.creation_time.nil?
28  end
29
30  def encrypt_password
31    if pass_crypt_confirmation
32      self.pass_salt = OSM::make_token(8)
33      self.pass_crypt = OSM::encrypt_password(pass_crypt, pass_salt)
34    end
35  end
36
37  def self.authenticate(options)
38    if options[:username] and options[:password]
39      user = find(:first, :conditions => ["email = ? OR display_name = ?", options[:username], options[:username]])
40      user = nil if user and user.pass_crypt != OSM::encrypt_password(options[:password], user.pass_salt)
41    elsif options[:token]
42      token = UserToken.find(:first, :include => :user, :conditions => ["user_tokens.token = ?", options[:token]])
43      user = token.user if token
44    end
45
46    if user
47      user = nil unless user.active? or options[:inactive]
48    end
49
50    token.update_attribute(:expiry, 1.week.from_now) if token and user
51
52    return user
53  end 
54
55  def to_xml
56    doc = OSM::API.new.get_xml_doc
57    doc.root << to_xml_node()
58    return doc
59  end
60
61  def to_xml_node
62    el1 = XML::Node.new 'user'
63    el1['display_name'] = self.display_name.to_s
64    el1['account_created'] = self.creation_time.xmlschema
65    if self.home_lat and self.home_lon
66      home = XML::Node.new 'home'
67      home['lat'] = self.home_lat.to_s
68      home['lon'] = self.home_lon.to_s
69      home['zoom'] = self.home_zoom.to_s
70      el1 << home
71    end
72    return el1
73  end
74
75  def nearby(radius = 50)
76    if self.home_lon and self.home_lat
77      gc = OSM::GreatCircle.new(self.home_lat, self.home_lon)
78      bounds = gc.bounds(radius)
79      nearby = User.find(:all, :conditions => "home_lat between #{bounds[:minlat]} and #{bounds[:maxlat]} and home_lon between #{bounds[:minlon]} and #{bounds[:maxlon]} and data_public = 1 and id != #{self.id}")
80      nearby.delete_if { |u| gc.distance(u.home_lat, u.home_lon) > radius }
81      nearby.sort! { |u1,u2| gc.distance(u1.home_lat, u1.home_lon) <=> gc.distance(u2.home_lat, u2.home_lon) }
82    else
83      nearby = []
84    end
85    return nearby
86  end
87
88  def distance(nearby_user)
89    return OSM::GreatCircle.new(self.home_lat, self.home_lon).distance(nearby_user.home_lat, nearby_user.home_lon)
90  end
91
92  def is_friends_with?(new_friend)
93    res = false
94    @new_friend = new_friend
95    self.friends.each do |friend|
96      if friend.friend_user_id == @new_friend.id
97        return true
98      end
99    end
100    return false
101  end
102
103end
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