Module: ActionCableNotifications::Channel::Actions

Included in:
ActionCableNotifications::Channel
Defined in:
lib/action_cable_notifications/channel_actions.rb

Instance Method Summary collapse

Instance Method Details

#create(data) ⇒ Object

Creates one record in the DB



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
 
# File 'lib/action_cable_notifications/channel_actions.rb', line 34

def create(data)
  # XXX: Check if the client is allowed to call the method

  params = data[:params] || {}
  fields = params[:fields].except(:id)

  error = nil

  if fields.present?
    begin
      record = data[:model].create(fields)

      if !record.persisted?
        error = true
      end
    rescue Exception => e
      error = e.message
    end
  else
    error = "No fields were provided"
  end

  if error
    response = {
      collection: data[:model].model_name.collection,
      msg: 'error',
      cmd: 'create',
      error: error || record.errors.full_messages
    }

    # Send error notification to the client
    transmit response
  end

end

#destroy(data) ⇒ Object

Remove records from the DB



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
 
# File 'lib/action_cable_notifications/channel_actions.rb', line 110

def destroy(data)
  # XXX: Check if the client is allowed to call the method

  params = data[:params] || {}

  record = data[:model].find(params[:id]) rescue nil

  error = nil

  if record.present?
    begin
      record.destroy
    rescue Exception => e
      error = e.message
    end
  else
    error = "There is no record with id: #{params[:id]}"
  end

  if error
    response = { collection: data[:model].model_name.collection,
      msg: 'error',
      cmd: 'destroy',
      error: error || record.errors.full_messages
    }

    # Send error notification to the client
    transmit response
  end

end

#fetch(data) ⇒ Object

Fetch records from the DB and send them to the client

Parameters:

  • selector (Hash) —

    Specifies conditions that the registers should match



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/action_cable_notifications/channel_actions.rb', line 9

def fetch(data)
  # XXX: Check if the client is allowed to call the method

  params = data[:params] || {}

  # Get results using provided parameters and model configured scope
  results = data[:model].
              select(params[:select]).
              limit(params[:limit]).
              where(params[:where] || {}).
              scoped_collection(data[:model_options][:scope]).
              to_a() rescue []

  response = { collection: data[:model].model_name.collection,
    msg: 'upsert_many',
    data: results
  }

  # Send data to the client
  transmit_packet response
end

#update(data) ⇒ Object

Update one record from the DB



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
 
# File 'lib/action_cable_notifications/channel_actions.rb', line 74

def update(data)
  # XXX: Check if the client is allowed to call the method

  params = data[:params] || {}

  record = data[:model].find(params[:id]) rescue nil

  error = nil

  if record.present?
    begin
      record.update_attributes(params[:fields])
    rescue Exception => e
      error = e.message
    end
  else
    error = "There is no record with id: #{params[:id]}"
  end

  if error
    response = {
      collection: data[:model].model_name.collection,
      msg: 'error',
      cmd: 'update',
      error: error || record.errors.full_messages
    }

    # Send error notification to the client
    transmit response
  end

end