Module: BetterRecord::Migration

Defined in:
lib/better_record/migration.rb

Instance Method Summary collapse

Instance Method Details

#audit_table(table_name, rows = nil, query_text = nil, skip_columns = nil) ⇒ Object 



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
 
# File 'lib/better_record/migration.rb', line 5

def audit_table(table_name, rows = nil, query_text = nil, skip_columns = nil)
  reversible do |d|
    d.up do
      if(rows && rows.is_a?(Array))
        skip_columns = rows
        rows = true
        query_text = true
      end

      if(rows.nil?)
        execute "SELECT #{BetterRecord.db_audit_schema}.audit_table('#{table_name}');"
      else
        rows = !!rows ? 't' : 'f'
        query_text = !!query_text ? 't' : 'f'
        skip_columns = skip_columns.present? ? "'{#{skip_columns.join(',')}}'" : 'ARRAY[]'
        execute "SELECT #{BetterRecord.db_audit_schema}.audit_table('#{table_name}', BOOLEAN '#{rows}', BOOLEAN '#{query_text}', #{skip_columns}::text[]);"
      end
    end

    d.down do
      execute "DROP TRIGGER audit_trigger_row ON #{table_name};"
      execute "DROP TRIGGER audit_trigger_stm ON #{table_name};"
    end
  end
end

#login_triggers(table_name, password_col = 'password', email_col = 'email', function_name = nil, in_reverse = false) ⇒ Object 



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
 
# File 'lib/better_record/migration.rb', line 31

def (table_name, password_col = 'password', email_col = 'email', function_name = nil, in_reverse = false)
  table_name = table_name.to_s

  reversible do |d|
    d.__send__(in_reverse ? :down : :up) do
      password_text = ''

      if !!password_col
        create_pwd_txt = ->(col) {
          "IF (NEW.\#{col} IS NOT NULL)\nAND (\n(TG_OP = 'INSERT') OR ( NEW.\#{col} IS DISTINCT FROM OLD.\#{col} )\n) THEN\nIF (NEW.\#{col} IS DISTINCT FROM 'CLEAR_EXISTING_PASSWORD_FOR_ROW') THEN\nNEW.\#{col} = hash_password(NEW.\#{col});\nELSE\nNEW.\#{col} = NULL;\nEND IF;\nELSE\nIF (TG_OP IS DISTINCT FROM 'INSERT') THEN\nNEW.\#{col} = OLD.\#{col};\nELSE\nNEW.\#{col} = NULL;\nEND IF;\nEND IF;\n\n"
        }
        password_text = password_col.is_a?(Array) ? (password_col.map {|pwd| create_pwd_txt.call(pwd)}).join("\n") : create_pwd_txt.call(password_col)
      end

      email_text = ''

      if !!email_col
        email_text = "IF (TG_OP = 'INSERT') OR ( NEW.\#{email_col} IS DISTINCT FROM OLD.\#{email_col} ) THEN\nNEW.\#{email_col} = validate_email(NEW.\#{email_col});\nEND IF;\n\n"
      end

      execute "CREATE OR REPLACE FUNCTION \#{function_name.presence || table_name.singularize}_changed()\nRETURNS TRIGGER AS\n$BODY$\nBEGIN\n\#{password_text}\n\#{email_text}\nRETURN NEW;\nEND;\n$BODY$\nlanguage 'plpgsql';\n"

      execute "CREATE TRIGGER \#{function_name.presence || table_name}_on_insert\nBEFORE INSERT ON \#{table_name}\nFOR EACH ROW\nEXECUTE PROCEDURE \#{function_name.presence || table_name.singularize}_changed();\n"

      execute "CREATE TRIGGER \#{function_name.presence || table_name}_on_update\nBEFORE UPDATE ON \#{table_name}\nFOR EACH ROW\nEXECUTE PROCEDURE \#{function_name.presence || table_name.singularize}_changed();\n\n"
    end

    d.__send__(in_reverse ? :up : :down) do
      execute "DROP TRIGGER IF EXISTS #{function_name.presence || table_name}_on_insert ON #{table_name};"
      execute "DROP TRIGGER IF EXISTS #{function_name.presence || table_name}_on_update ON #{table_name};"
    end
  end
end