Class: Renalware::Pathology::SparklineComponent

Inherits:
ApplicationComponent show all
Defined in:
app/components/renalware/pathology/sparkline_component.rb

Overview

Renders a pathology sparkline - a small graph of patient results for a particular OBX (observation_description) over time. TODO: Move the graph config into JS. Possibly use a stimulus controller

Constant Summary collapse

CHART_OPTIONS = 
{
  library: {
    chart: {
      type: "area",
      margin: [0, 0, 0, 0],
      height: 20,
      width: 80,
      skipClone: true,
      style: {
        overflow: "visible"
      }
    },
    credits: {
      enabled: false
    },
    title: "",
    xAxis: {
      type: "datetime",
      tickPositions: [],
      labels: {
        enabled: false
      },
      startOnTick: false,
      endOnTick: false,
      title: {
        text: nil
      }
    },
    legend: {
      enabled: false
    },
    yAxis: {
      tickPositions: [0],
      endOnTick: false,
      startOnTick: false,
      title: {
        text: nil
      },
      min: 0,
      labels: {
        enabled: false
      }
    },
    tooltip: {
      hideDelay: 0,
      outside: true,
      shared: true,
      xDateFormat: "%d-%b-%Y"
    },
    plotOptions: {
      area: {
        fillColor: {
          linearGradient: {
            x1: 0,
            y1: 0,
            x2: 0,
            y2: 1
          },
          stops: [
            [0, "#eee"],
            [0.5, "#fff"]
          ]
        }
      },
      series: {
        animation: false,
        lineWidth: 1,
        shadow: false,
        states: {
          hover: {
            lineWidth: 1
          }
        },
        marker: {
          radius: 1,
          states: {
            hover: {
              radius: 2
            }
          }
        },
        fillOpacity: 0.25
      },
      column: {
        negativeColor: "#910000",
        borderColor: "silver"
      }
    }
  }
}.freeze

Instance Method Summary collapse

Methods inherited from ApplicationComponent

#policy, #renalware

Instance Method Details

#cache_key ⇒ Object 



113
114
115
 
# File 'app/components/renalware/pathology/sparkline_component.rb', line 113

def cache_key
  "#{patient.cache_key}/sparkline/#{observation_description.id}"
end

#chart_data ⇒ Object 



103
104
105
106
107
108
109
110
111
 
# File 'app/components/renalware/pathology/sparkline_component.rb', line 103

def chart_data
  @chart_data ||= begin
    patient
      .observations
      .where(description_id: observation_description.id)
      .order(:observed_at)
      .pluck([:observed_at, :result])
  end
end

#dom_id ⇒ Object 



129
130
131
 
# File 'app/components/renalware/pathology/sparkline_component.rb', line 129

def dom_id
  @dom_id ||= ActionView::RecordIdentifier.dom_id(observation_description)
end

#options ⇒ Object 



125
126
127
 
# File 'app/components/renalware/pathology/sparkline_component.rb', line 125

def options
  CHART_OPTIONS
end

#render? ⇒ Boolean

Because we cache the component html inside the view sidecar, we want to avoid implementing this method properly - ie checking if there anything to render - as that would involve querying the database, thus negating the befit of any caching.

Returns:

  • (Boolean) 


121
122
123
 
# File 'app/components/renalware/pathology/sparkline_component.rb', line 121

def render?
  true
end