Module: MetaReports::ReportsHelper

Defined in:
lib/meta_reports/helper.rb

Instance Method Summary collapse

Instance Method Details

#convert_margins_to_xlsx(margins) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 21

def convert_margins_to_xlsx(margins)
  margins = [*margins].compact.map {|val| val/72.0}
  page_margins = {}
  unless margins.blank?
    len = margins.length
    [:top, :right, :bottom, :left].each_with_index { |dir, i| page_margins[dir] = margins[i%len] }
    if len == 6
      page_margins[:header] = margins[5]
      page_margins[:footer] = margins[6]
    end
  end
  page_margins
end

#html_cell(cell, options = {}) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 35

def html_cell(cell, options = {})
  tag = options[:tag] || :td
  options[:inline_css].nil? && options[:inline_css] = true
  if cell.is_a? Hash
    tags = cell.reject {|k,v| k == :content || k == :html}
    tags[:class] ||= options[:default_class]
    if options[:inline_css]
      color = nil
      tags[:class].split(/\s+/).each do |token|
        if color = meta_report_color(token)
          break
        end
      end
      tags[:style] = "background-color: ##{color}"
    end
    content_tag tag, (cell[:html] || cell[:content]).to_s.html_safe, tags
  elsif cell.is_a? Array
  else
    content_tag(tag, cell, :class => options[:default_class])
  end
end

#meta_report_alt_links(report, params) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 152

def meta_report_alt_links(report, params)
  return nil unless report
  links = []
  if report.format? :pdf
    links << link_to(image_tag('meta_reports/print.png'), params.merge({:format => :pdf}), :target => '_blank')
  end
  if report.format? :xlsx
    links << link_to(image_tag('meta_reports/spreadsheet.png'), params.merge({:format => :xlsx}), :target => '_blank')
  end
  links.join(' ').html_safe
end

#meta_report_color(klass, row = 0) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 3

def meta_report_color(klass, row = 0)
  @meta_reports_colors ||= {}
  @meta_reports_colors[klass.to_sym] ||= begin
    color = MetaReports::Color::COLORS[klass.to_sym]
    return nil unless color
    if color.is_a? Array
      # the trailing split first is to drop any !important directive
      color = color[row%color.length].to_s.split.first 
    end
    if color.gsub!(/^\$/, '') # we have a variable
      index = 0
      index = $1 if color.gsub!(/_(\d+)$/,'')
      color = meta_report_color(color, index)
    end
    color
  end
end

#meta_report_link(report, title = report.title) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 125

def meta_report_link(report, title = report.title)
  return nil unless report
  if report.direct
    content_tag :span do
      links = []
      if report.format? :html
        links << link_to(title, meta_reports.short_show_path(report), target: '_blank')
      elsif report.format? :pdf
        links << link_to(title, meta_reports.short_show_path(report, format: :pdf), target: '_blank')
      elsif report.format? :xlsx
        links << link_to(title, meta_reports.short_show_path(report, format: :xlsx), target: '_blank')
      end
      if report.format? :pdf
        links << link_to(image_tag('meta_reports/print.png'), meta_reports.short_show_path(report, format: :pdf), target: '_blank')
      end
      if report.format? :xlsx
        links << link_to(image_tag('meta_reports/spreadsheet.png'), meta_reports.short_show_path(report, format: :xlsx), target: '_blank')
      end
      links.join(' ').html_safe
    end
  else
    content_tag :span do
     link_to title, report
    end
  end
end

#prep_pdf_table(table, styling) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 57

def prep_pdf_table(table, styling)
  if table.is_a?(Array)
    opts = table.last.is_a?(Hash) && table.pop || {}
    data = table
  else
    data = table.to_a
    opts = table.options
  end
  styling[:column_widths] = opts[:column_widths] if opts[:column_widths]
  row_classes = opts[:row_classes] || {}
  row_colors = {}
  row_classes.each do |i, klass|
    if color = meta_report_color(klass, i)
      row_colors[i] = color
    end
  end
  styling[:row_colors] = row_colors
  data.each_index do |i|
    data[i].each_index do |j|
      if data[i][j].is_a? Hash
        [:html, :title, :id, :link].each {|sym| data[i][j].delete(sym)}
        _class = data[i][j].delete(:class)
        unless _class.blank?
          [:right, :left, :center].each do |sym|
            set_style(styling, sym, i, j) if _class =~ /\b#{sym}\b|[^a-z]#{sym}/i
          end
          if _class =~ /\bbold\b|\bstrong\b/
            set_style(styling, :bold, i, j)
          end
          _class.to_s.split(/\s+/).each do |token|
            if color = meta_report_color(token)
              set_style(styling, :cell_bg_colors, i, j, color)
              break
            end
          end
        end
        unless data[i][j][:image] || data[i][j][:content].is_a?(String)
          data[i][j][:content] = data[i][j][:content].to_s
        end
      elsif !data[i][j].is_a?(String)
        data[i][j] = data[i][j].to_s
      end
    end
  end
  data
end

#prep_xlsx_table(table, styling) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 104

def prep_xlsx_table(table, styling)
  data = table.to_a
  data.each_index do |i|
    data[i].each_index do |j|
      if data[i][j].nil?
        data[i][j] = ''
      elsif data[i][j].is_a? Hash
        _class = data[i][j][:class]
        [:right, :left, :center].each do |sym|
          set_style(styling, sym, i, j) if _class =~ /\b#{sym}\b|[^a-z]#{sym}/i
        end
        if _class =~ /\bbold\b|\bstrong\b/
          set_style(styling, :bold, i, j)
        end
        data[i][j] = data[i][j][:content].to_s
      end
    end
  end
  data
end

#set_style(styling, style, row, col, val = nil) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 164

def set_style(styling, style, row, col, val = nil)
  styling[style] ||= []
  styling[style] << (val ? [row,col,val] : [row,col])
end

#to_xls_col(column) ⇒ Object 



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# File 'lib/meta_reports/helper.rb', line 169

def to_xls_col(column)
  index = column.to_i.abs
  chars = []
  while index >= 26 do
    chars << ((index % 26) + 65).chr
    index = (index / 26).to_i - 1
  end
  chars << (index + 65).chr
  chars.reverse.join
end