Class: DbdocEngine::SchemaDiagramController

Inherits:
ApplicationController show all
Defined in:
app/controllers/dbdoc_engine/schema_diagram_controller.rb

Instance Method Summary collapse

Instance Method Details

#data ⇒ Object 



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# File 'app/controllers/dbdoc_engine/schema_diagram_controller.rb', line 15

def data
  @tables = DbDesignDynamicTableQueries.active_tables_with_columns
              .includes(:db_design_dynamic_columns, :db_design_table_group)

  @foreign_keys = DbdocEngine::DbDesignDynamicColumnQueries.all_foreign_keys_with_tables
                    .includes(db_design_dynamic_table: :db_design_dynamic_columns)
  @existing_table_names = DbDesignDynamicTable.where(deleted_at: nil).pluck(:table_name).to_set

  dot_code = generate_graphviz_dot(@tables)
  svg = render_graphviz_svg(dot_code)

  selected_group_id = params[:group_id].presence if params[:group_id] != "all"
  @group_colors = {}

  @tables.each do |table|
    group_color = table.db_design_table_group&.group_color || "#cccccc"
    if selected_group_id.nil? || table.db_design_table_group_id.to_s == selected_group_id
      @group_colors[table.table_name] = group_color
    else
      @group_colors[table.table_name] = "#808080"
    end
  end

  @column_data = generate_column_data(@tables)
  @relationship_data = generate_relationship_data

  respond_to do |format|
    format.json do
      render json: {
        diagram_svg: svg,
        group_colors: @group_colors,
        column_data: @column_data,
        relationship_data: @relationship_data
      }
    end
  end
end

#index ⇒ Object 



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# File 'app/controllers/dbdoc_engine/schema_diagram_controller.rb', line 9

def index
  @groups = DbdocEngine::DbDesignTableGroupQueries.groups_with_tables_having_columns

  @foreign_keys = DbdocEngine::DbDesignDynamicColumnQueries.all_foreign_keys_with_tables
end

#lighten_color(hex, amount = 0.7) ⇒ Object 



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# File 'app/controllers/dbdoc_engine/schema_diagram_controller.rb', line 65

def lighten_color(hex, amount = 0.7)
  r = hex[1..2].to_i(16)
  g = hex[3..4].to_i(16)
  b = hex[5..6].to_i(16)
  r = [ (r + (255 - r) * amount), 255 ].min.round
  g = [ (g + (255 - g) * amount), 255 ].min.round
  b = [ (b + (255 - b) * amount), 255 ].min.round
  "#%02X%02X%02X" % [ r, g, b ]
end

#render_graphviz_svg(dot_code) ⇒ Object 



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# File 'app/controllers/dbdoc_engine/schema_diagram_controller.rb', line 53

def render_graphviz_svg(dot_code)
  require "open3"
  svg = nil
  Open3.popen3("dot -Tsvg") do |stdin, stdout, stderr, wait_thr|
    stdin.puts dot_code
    stdin.close
    svg = stdout.read
    raise "Graphviz error: #{stderr.read}" if wait_thr.value != 0
  end
  svg
end