Class: ReportBuilder::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/report_builder.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(report = nil) ⇒ Base

Returns a new instance of Base.



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# File 'lib/report_builder.rb', line 22

def initialize(report=nil)
  unless report.blank?
    self.report   = report
    self.template = report.report_template
  end
end

Instance Attribute Details

#report ⇒ Object

Returns the value of attribute report.



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# File 'lib/report_builder.rb', line 7

def report
  @report
end

#template ⇒ Object

Returns the value of attribute template.



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# File 'lib/report_builder.rb', line 8

def template
  @template
end

Class Method Details

.requires_dates! ⇒ Object 



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# File 'lib/report_builder.rb', line 10

def self.requires_dates!
  @requires_dates = true
end

.requires_dates? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/report_builder.rb', line 14

def self.requires_dates?
  !!@requires_dates
end

Instance Method Details

#arelize(field) ⇒ Object 



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# File 'lib/report_builder.rb', line 33

def arelize(field)
  field = field.split('.')
  table = tables[field.first]

  raise "Table `#{field.first}' not found for `#{template.kind}' report kind" if table.blank?

  table[field.last.to_sym]
end

#human_calculation_name(field) ⇒ Object 



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# File 'lib/report_builder.rb', line 108

def human_calculation_name(field)
  I18n.t "smartkiosk.reports.data.#{keyword}.calculations.#{field}"
end

#human_calculation_names ⇒ Object 



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# File 'lib/report_builder.rb', line 124

def human_calculation_names
  calculations.keys.map{|x| [human_calculation_name(x), x]}
end

#human_condition_name(field) ⇒ Object 



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# File 'lib/report_builder.rb', line 112

def human_condition_name(field)
  I18n.t "smartkiosk.reports.data.#{keyword}.conditions.#{field}"
end

#human_condition_values(condition) ⇒ Object 



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# File 'lib/report_builder.rb', line 128

def human_condition_values(condition)
  conditions[condition].call().with_indifferent_access
end

#human_field_name(field) ⇒ Object 



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# File 'lib/report_builder.rb', line 89

def human_field_name(field)
  model, name = field.split '.'
  title       = []

  title << I18n.t("activerecord.models.#{model}", :count => 1)
  title << I18n.t("activerecord.attributes.#{model}.#{name}")

  title.join(': ')
end

#human_field_value(field, value) ⇒ Object 



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# File 'lib/report_builder.rb', line 99

def human_field_value(field, value)
  return value unless respond_to?(:field_localizations)

  @localizations ||= field_localizations
  return value unless @localizations[field]

  @localizations[field].call(value)
end

#human_groupping_field_names(groupping) ⇒ Object 



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# File 'lib/report_builder.rb', line 120

def human_groupping_field_names(groupping)
  fields[groupping].map{|x| [human_field_name(x), x]}
end

#human_groupping_names ⇒ Object 



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# File 'lib/report_builder.rb', line 116

def human_groupping_names
  groupping.map{|x| [human_field_name(x), x]}
end

#keyword ⇒ Object 



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# File 'lib/report_builder.rb', line 29

def keyword
  self.class.name.underscore.gsub('_report', '')
end

#query ⇒ Object 



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# File 'lib/report_builder.rb', line 42

def query
  query = context(report.start, report.finish)

  aggregate = {
    'postgresql' => 'MIN',
    'oracle_enhanced' => 'MIN'
  }[ActiveRecord::Base.configurations[Rails.env]['adapter']]

  fields = template.fields.each_with_index do |field, i|
    projection = arelize(field)

    if !aggregate.blank? && !template.groupping.blank?
      projection = Arel::Nodes::NamedFunction.new(
        aggregate, [ projection ]
      )
    end

    projection = projection.as("\"_#{i}\"")
    query = query.project(projection)
  end

  order = arelize(template.sorting) unless template.sorting.blank?
  order = order.desc if !order.blank? && template.sort_desc
  query = query.group(arelize template.groupping) unless template.groupping.blank?
  query = query.order(order) unless order.blank?

  unless template.conditions.blank?
    template.conditions.each do |column, value|
      next if value.blank?

      if value.is_a?(Array)
        query = query.where(arelize(column).in(value))
      else
        query = query.where(arelize(column).eq(value))
      end
    end
  end

  unless template.calculations.blank?
    template.calculations.select{|x| !x.blank?}.each do |calculation|
      query = calculations[calculation].call(query, template)
    end
  end

  query.to_sql
end

#requires_dates? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/report_builder.rb', line 18

def requires_dates?
  self.class.requires_dates?
end