Class: ActiveReporter::Dimension::Bin

Inherits:
Base
  • Object
show all
Defined in:
lib/active_reporter/dimension/bin.rb,
lib/active_reporter/dimension/bin/set.rb,
lib/active_reporter/dimension/bin/table.rb

Direct Known Subclasses

Number, Time

Defined Under Namespace

Classes: Set, Table

Constant Summary collapse

MAX_BINS = 
2_000

Instance Attribute Summary

Attributes inherited from Base

#name, #options, #report

Instance Method Summary collapse

Methods inherited from Base

#attribute, #expression, #extract_sql_value, #filtering?, #grouping?, #initialize, #model, #null_order, #nulls_last?, #order, #order_expression, #params, #relate, #sort_desc?, #sort_order

Constructor Details

This class inherits a constructor from ActiveReporter::Dimension::Base

Instance Method Details

#bin_end ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 25

def bin_end
  @bin_end ||= if max.blank? || min.blank? || min > max
    nil
  else
    bin_edge = bin_start + bin_width

    loop do
      break if bin_edge >= max

      bin_edge += bin_width
    end

    bin_edge += bin_width unless filter_values_for(:max).present? # # # figure out why we need this??

    bin_edge
  end
end

#domain ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 51

def domain
  min.nil? || max.nil? ? 0 : (max - min)
end

#filter(relation) ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 63

def filter(relation)
  filter_values.filter(relation, expression)
end

#filter_max ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 47

def filter_max
  filter_values_for(:max).max
end

#filter_min ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 43

def filter_min
  filter_values_for(:min).min
end

#filter_values ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 59

def filter_values
  @filter_values ||= to_bins(super)
end

#group(relation) ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 67

def group(relation)
  group_values.group(relation, expression, sql_value_name)
end

#group_values ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 55

def group_values
  @group_values ||= to_bins(array_param(:bins).presence || autopopulate_bins)
end

#max ⇒ Object

report values are less than max, grouped by bin_width



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# File 'lib/active_reporter/dimension/bin.rb', line 21

def max
  @max ||= filter_max || report.records.maximum(expression)
end

#max_bins ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 10

def max_bins
  self.class::MAX_BINS
end

#min ⇒ Object Also known as: bin_start

report values are greater than or equal to min, grouped by bin_width



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# File 'lib/active_reporter/dimension/bin.rb', line 15

def min
  @min ||= filter_min || report.records.minimum(expression)
end

#validate_params! ⇒ Object 



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# File 'lib/active_reporter/dimension/bin.rb', line 71

def validate_params!
  super

  if params.key?(:bin_count)
    invalid_param!(:bin_count, "must be numeric") unless ActiveReporter.numeric?(params[:bin_count])
    invalid_param!(:bin_count, "must be greater than 0") unless params[:bin_count].to_i > 0
    invalid_param!(:bin_count, "must be less than #{max_bins}") unless params[:bin_count].to_i <= max_bins
  end

  if array_param(:bins).present?
    invalid_param!(:bins, "must be hashes with min/max keys and valid values, or nil") unless group_values.all?(&:valid?)
  end

  if array_param(:only).present?
    invalid_param!(:only, "must be hashes with min/max keys and valid values, or nil") unless filter_values.all?(&:valid?)
  end
end