Class: Tiler::Widgets::TableQuery

Inherits:
Query::Base show all
Defined in:
lib/tiler/widgets/table.rb

Constant Summary collapse

DEFAULT_LIMIT = 
20
DEFAULT_AGG = 
"last".freeze

Constants inherited from Query::Base

Query::Base::SAFE_COLUMN_RE

Instance Attribute Summary

Attributes inherited from Query::Base

#config, #panel, #source

Instance Method Summary collapse

Methods inherited from Query::Base

#initialize

Constructor Details

This class inherits a constructor from Tiler::Query::Base

Instance Method Details

#call ⇒ Object 



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# File 'lib/tiler/widgets/table.rb', line 10

def call
  cols     = parse_columns(config["columns"])
  group_by = config["group_by"]
  limit    = (config["limit"] || DEFAULT_LIMIT).to_i.clamp(1, 500)

  return empty_result(cols) if cols.empty? || group_by.blank?
  return empty_result(cols) unless safe_col?(group_by)

  groups = distinct_values(group_by)
  rows = groups.map do |g|
    scope = base_scope.where("json_extract(payload, ?) = ?", "$.#{group_by}", g.to_s)
    [ g ] + cols.map { |c| cell_for(scope, c) }
  end

  # Sort by the first numeric column (descending) for leaderboard feel;
  # falls back to label order if no numeric column was declared.
  first_num = cols.index { |c| c[:num] }
  rows = if first_num
    rows.sort_by { |r| -r[first_num + 1].to_f }
  else
    rows.sort_by { |r| r[0].to_s }
  end

  {
    columns: [ { label: group_by.humanize, num: false } ] + cols,
    rows:    rows.first(limit),
    total:   groups.size,
    limit:   limit
  }
end