Class: Dbviewer::Api::TablesController

Inherits:
BaseController show all
Defined in:
app/controllers/dbviewer/api/tables_controller.rb

Instance Method Summary collapse

Methods inherited from BaseController

#render_error, #render_success

Methods included from ErrorHandling

#handle_database_error, #log_error

Methods included from DatabaseOperations

#current_table?, #database_manager, #execute_query, #export_table_to_csv, #fetch_database_analytics, #fetch_filtered_record_count, #fetch_mini_erd_for_table, #fetch_table_columns, #fetch_table_metadata, #fetch_table_record_count, #fetch_table_records, #fetch_table_relationships, #fetch_tables, #get_adapter_name, #get_database_name, #prepare_query, #safe_quote_table_name, #table_query_operations

Instance Method Details

#index ⇒ Object 



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# File 'app/controllers/dbviewer/api/tables_controller.rb', line 4

def index
  tables_count = fetch_tables_count
  render_success(total_tables: tables_count)
end

#records ⇒ Object 



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# File 'app/controllers/dbviewer/api/tables_controller.rb', line 9

def records
  tables_stats = fetch_tables_stats
  render_success(tables_stats)
end

#relationship_counts ⇒ Object 



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# File 'app/controllers/dbviewer/api/tables_controller.rb', line 19

def relationship_counts
  table_name = params[:id]
  record_id = params[:record_id]

  unless table_name.present? && record_id.present?
    render_error("Table name and record ID are required", 400)
    return
  end

  begin
    # Get table metadata to find relationships
    metadata = fetch_table_metadata(table_name)

    unless metadata
      render_error("Table not found", 404)
      return
    end

    # Get reverse foreign keys (has_many relationships)
    reverse_foreign_keys = metadata.dig(:reverse_foreign_keys) || []

    relationship_counts = reverse_foreign_keys.map do |rel|
      begin
        # Count records in the related table that reference this record
        count_query = "SELECT COUNT(*) as count FROM #{rel[:from_table]} WHERE #{rel[:column]} = ?"
        result = database_manager.connection.exec_query(count_query, "Count Query", [ record_id ])
        count = result.rows.first&.first || 0

        {
          table: rel[:from_table],
          foreign_key: rel[:column],
          count: count.to_i
        }
      rescue => e
        Rails.logger.error "Error counting relationships for #{rel[:from_table]}: #{e.message}"
        {
          table: rel[:from_table],
          foreign_key: rel[:column],
          count: 0,
          error: e.message
        }
      end
    end

    render_success({
      table_name: table_name,
      record_id: record_id,
      relationships: relationship_counts
    })
  rescue => e
    Rails.logger.error "Error fetching relationship counts: #{e.message}"
    render_error("Error fetching relationship counts: #{e.message}", 500)
  end
end

#relationships_count ⇒ Object 



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# File 'app/controllers/dbviewer/api/tables_controller.rb', line 14

def relationships_count
  total_relationships = calculate_total_relationships
  render_success(total_relationships: total_relationships)
end