Class: Erd::ErdController

Inherits:
ApplicationController show all
Defined in:
app/controllers/erd/erd_controller.rb

Instance Method Summary collapse

Instance Method Details

#index ⇒ Object 



7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
# File 'app/controllers/erd/erd_controller.rb', line 7

def index
  Rails.application.eager_load!
  RailsERD.options[:filename], RailsERD.options[:filetype] = Rails.root.join('tmp/erd'), 'plain'
  RailsERD::Diagram::Graphviz.create
  plain = Rails.root.join('tmp/erd.plain').read
  positions = if (json = Rails.root.join('tmp/erd_positions.json')).exist?
    ActiveSupport::JSON.decode json.read
  else
    {}
  end
  @erd = render_plain plain, positions

  @migrations = Erd::Migrator.status
end

#migrate ⇒ Object 



82
83
84
85
 
# File 'app/controllers/erd/erd_controller.rb', line 82

def migrate
  Erd::Migrator.run_migrations :up => params[:up], :down => params[:down]
  redirect_to erd.root_path, :flash => {:executed_migrations => params.slice(:up, :down)}
end

#update ⇒ Object 



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
 
# File 'app/controllers/erd/erd_controller.rb', line 22

def update
  changes = ActiveSupport::JSON.decode(params[:changes])
  executed_migrations, failed_migrations = [], []
  changes.each do |row|
    begin
      action, model, column, from, to = row['action'], row['model'], row['column'], row['from'], row['to']
      case action
      when 'create_model'
        columns = column.split(' ').compact
        generated_migration_file = Erd::Migrator.execute_generate_model model, columns
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'remove_model'
        model = model.tableize
        generated_migration_file = Erd::Migrator.execute_generate_migration "drop_#{model}"
        gsub_file generated_migration_file, /def (up|change).*  end/m, "def change\n    drop_table :#{model}\n  end"
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'rename_model'
        model, from, to = from.tableize, to.tableize, model.tableize
        generated_migration_file = Erd::Migrator.execute_generate_migration "rename_#{from}_to_#{to}"
        gsub_file generated_migration_file, /def (up|change).*  end/m, "def change\n    rename_table :#{from}, :#{to}\n  end"
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'add_column'
        model = model.tableize
        name_and_type = column.scan(/(.*)\((.*?)\)/).first
        name, type = name_and_type[0], name_and_type[1]
        generated_migration_file = Erd::Migrator.execute_generate_migration "add_#{name}_to_#{model}", ["#{name}:#{type}"]
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'rename_column'
        model = model.tableize
        generated_migration_file = Erd::Migrator.execute_generate_migration "rename_#{model}_#{from}_to_#{to}"
        gsub_file generated_migration_file, /def (up|change).*  end/m, "def change\n    rename_column :#{model}, :#{from}, :#{to}\n  end"
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'alter_column'
        model = model.tableize
        generated_migration_file = Erd::Migrator.execute_generate_migration "change_#{model}_#{column}_type_to_#{to}"
        gsub_file generated_migration_file, /def (up|change).*  end/m, "def change\n    change_column :#{model}, :#{column}, :#{to}\n  end"
        Erd::Migrator.run_migrations :up => generated_migration_file
        executed_migrations << generated_migration_file
      when 'move'
        model = model.tableize
        json_file = Rails.root.join('tmp', 'erd_positions.json')
        positions = json_file.exist? ? ActiveSupport::JSON.decode(json_file.read) : {}
        positions[model] = to
        json_file.open('w') {|f| f.write positions.to_json}
      else
        raise "unexpected action: #{action}"
      end
    rescue ::Erd::MigrationError => e
      failed_migrations << e.message
    end
  end

  redirect_to erd.root_path, :flash => {:executed_migrations => {:up => executed_migrations}, :failed_migrations => failed_migrations}
end