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module TrendsHelper
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include CommonParametersHelper
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def trendable_types
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options = {_('Environment') => 'Environment', _('Operating system') => 'Operatingsystem',
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_('Model') => 'Model', _('Facts') => 'FactName', _('Host group') => 'Hostgroup', _('Compute resource') => 'ComputeResource'}
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existing = ForemanTrend.types.pluck(:trendable_type)
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options.delete_if{ |k, v| existing.include?(v) }
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end
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def trend_days_filter
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form_tag @trend, :id => 'days_filter', :method => :get, :class => "form form-inline" do
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content_tag(:span, (_("Trend of the last %s days.") %
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select(nil, 'range', 1..Setting[:max_trend], {:selected => range},
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{:onchange => "$('#days_filter').submit();$(this).attr('disabled','disabled');;"})).html_safe)
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end
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end
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def trend_title(trend)
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if trend.fact_value.blank?
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trend.to_label
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else
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"#{trend.type_name} - #{trend.to_label}"
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end
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end
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def chart_data(trend, from = Setting[:max_trend], to = Time.now.utc)
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chart_colors = ['#4572A7', '#AA4643', '#89A54E', '#80699B', '#3D96AE', '#DB843D', '#92A8CD', '#A47D7C', '#B5CA92']
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values = trend.values
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labels = {}
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values.includes(:trendable).each {|v| labels[v.id] = [CGI.escapeHTML(v.to_label), trend_path(:id => v)]}
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values.includes(:trend_counters).where(["trend_counters.interval_end > ? or trend_counters.interval_end is null", from])
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.reorder("trend_counters.interval_start")
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.each_with_index.map do |value, idx|
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data = []
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value.trend_counters.each do |counter|
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# cut the left side of the graph
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interval_start = ((counter.interval_start || from) > from) ? counter.interval_start : from
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next_timestamp = counter.try(:interval_end) || Time.now.utc
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# transform the timestamp values to flot format - from seconds in Ruby to milliseconds in flot
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data << [interval_start.to_i * 1000, counter.count]
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data << [next_timestamp.to_i * 1000 - 1, counter.count]
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end
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{:label => labels[value.id][0], :href => labels[value.id][1], :data => data, :color => chart_colors[idx % chart_colors.size()] } unless data.empty?
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end.compact
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end
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def range
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params["range"].empty? ? Setting[:max_trend] : params["range"].to_i
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end
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end
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