Class: Dbviewer::TablesController

Inherits:
ApplicationController show all
Includes:
PaginationConcern
Defined in:
app/controllers/dbviewer/tables_controller.rb

Instance Method Summary collapse

Methods included from PaginationConcern

#calculate_total_pages, #fetch_total_count, #set_pagination_params, #set_sorting_params

Methods included from ErrorHandling

#handle_database_error, #log_error

Methods included from DatabaseOperations

#calculate_schema_size, #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_with_stats, #get_database_name, #prepare_query, #safe_quote_table_name, #table_query_operations

Instance Method Details

#export_csv ⇒ Object 



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# File 'app/controllers/dbviewer/tables_controller.rb', line 99

def export_csv
  unless Dbviewer.configuration.enable_data_export
    flash[:alert] = "Data export is disabled in the configuration"
    redirect_to table_path(params[:id])
    return
  end

  limit = (params[:limit] || 10000).to_i
  include_headers = params[:include_headers] != "0"

  # Apply global creation filters
  set_global_filters

  # Create query parameters for export
  query_params = Dbviewer::TableQueryParams.new(
    page: 1,
    per_page: limit,
    order_by: nil,
    direction: "asc",
    column_filters: @column_filters.reject { |_, v| v.blank? }
  )

  # Get filtered data for export
  csv_data = export_table_to_csv(@table_name, query_params, include_headers)

  # Set filename with timestamp for uniqueness
  timestamp = Time.now.strftime("%Y%m%d%H%M%S")

  # Add filter info to filename if filters are applied
  filename_suffix = ""
  if @creation_filter_start.present? || @creation_filter_end.present?
    filename_suffix = "_filtered"
  end

  filename = "#{@table_name}#{filename_suffix}_#{timestamp}.csv"

  # Send data as file
  send_data csv_data,
            type: "text/csv; charset=utf-8; header=present",
            disposition: "attachment; filename=#{filename}"
end

#index ⇒ Object 



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# File 'app/controllers/dbviewer/tables_controller.rb', line 7

def index
  @tables = fetch_tables_with_stats(include_record_counts: true)
end

#mini_erd ⇒ Object 



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# File 'app/controllers/dbviewer/tables_controller.rb', line 59

def mini_erd
  begin
    @erd_data = fetch_mini_erd_for_table(@table_name)

    if @erd_data[:error].present?
      Rails.logger.error("Mini ERD error: #{@erd_data[:error]}")
    end

    respond_to do |format|
      format.json { render json: @erd_data }
      format.html { render layout: false }
    end
  rescue => e
    Rails.logger.error("Error generating Mini ERD: #{e.message}")
    Rails.logger.error(e.backtrace.join("\n"))

    @error_message = e.message
    @erd_data = { tables: [], relationships: [], error: @error_message }

    respond_to do |format|
      format.json { render json: { error: @error_message }, status: :internal_server_error }
      format.html { render layout: false }
    end
  end
end

#query ⇒ Object 



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# File 'app/controllers/dbviewer/tables_controller.rb', line 85

def query
  @read_only_mode = true # Flag to indicate we're in read-only mode
  @columns = fetch_table_columns(@table_name)
  @tables = fetch_tables_with_stats  # Fetch tables for sidebar

  # Set active table for sidebar highlighting
  @active_table = @table_name

  prepare_query
  execute_query

  render :query
end

#show ⇒ Object 



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# File 'app/controllers/dbviewer/tables_controller.rb', line 11

def show
  set_pagination_params
  set_sorting_params

  # Get column filters from params first
  @column_filters = params[:column_filters].presence ? params[:column_filters].to_enum.to_h : {}

  # Then apply global creation filters (this will modify @column_filters)
  set_global_filters

  # Now create the query params with the combined filters
  query_params = Dbviewer::TableQueryParams.new(
    page: @current_page,
    per_page: @per_page,
    order_by: @order_by,
    direction: @order_direction,
    column_filters: @column_filters.reject { |_, v| v.blank? }
  )
  @total_count = fetch_total_count(@table_name, query_params)
  @records = fetch_table_records(@table_name, query_params)
  @total_pages = calculate_total_pages(@total_count, @per_page)
  @columns = fetch_table_columns(@table_name)
  @metadata = fetch_table_metadata(@table_name)

  if @records.nil?
    column_names = @columns.map { |c| c[:name] }
    @records = ActiveRecord::Result.new(column_names, [])
  end

  # Fetch timestamp visualization data if the table has a created_at column
  if has_timestamp_column?(@table_name)
    @time_grouping = params[:time_group] || "daily"
    @timestamp_data = fetch_timestamp_data(@table_name, @time_grouping)
  end

  respond_to do |format|
    format.html # Default HTML response
    format.json do
      render json: {
        table_name: @table_name,
        columns: @columns,
        metadata: @metadata,
        record_count: @total_count
      }
    end
  end
end