Image to be displayed

ReactiveChart is a generic component to render any chart UI supported by Echarts. It is connected to a database field in search backend to retrieve chart data.

Example uses:

  • A histogram chart to display the price distribution in an e-commerce app, range selection can filter the products
  • A pie chart to show the language distribution for a book store app, section selection can filter the books

Usage

Basic Usage

Copy 
    <ReactiveChart
        // pre-built chart type
        chartType="pie"
        // unique id for component
        componentId="language"
        // Database field to connect
        dataField="language_code.keyword"
        // Chart title
        title="Languages"
    />

Usage With All Props

Copy 
    <ReactiveChart
        componentId="Language"
        dataField="language_code.keyword"
        chartType="pie"
        title="Languages"
        size={100}
        index="good-books-ds"
        sortBy="count"
        react={{
            and: ['SearchFilter'],
        }}
        useAsFilter={true}
        showFilter={true}
        filterLabel="Language"
        URLParams
        loader="Loading ..."
        range={{
            start: 1900,
            end: 2000
        }}
        labelFormatter={value => `${value} USD`}
	    xAxisName="language"
	    yAxisName="count"
	    xAxisField="language"
	    yAxisField="language_count"
        renderError={error => <div>Something went wrong! {error}</div>}
        // event callbacks
        onClick={(item) => {}}
        onDblClick={(item) => {}}
        onMouseDown={(item) => {}}
        onMouseUp={(item) => {}}
        onMouseMove={(item) => {}}
        onMouseOut={(item) => {}}
        onGlobalOut={(item) => {}}
        onContextMenu={(item) => {}}
        onError={(error) => {}}
    />

Props

  • componentId String

    unique identifier of the component, can be referenced in other components' react prop.

  • dataField String

    data field to be connected to the component's UI view. The chart data is filtered by a database query on this field. This field is used for doing an aggregation and returns the result.

  • chartType String

    Pre-built chart types supported by ReactiveChart. Valid options are: pie, line, bar, histogram and chart.

  • nestedField String [optional]

    use to set the nested mapping field that allows arrays of objects to be indexed in a way that they can be queried independently of each other. Applicable only when dataField is a part of nested type.

  • title String or JSX [optional]

    title of the component to be shown in the UI.

  • loader String or JSX [optional]

    to display an optional loader while fetching the options.

  • size Number [optional] number of items to be displayed.

    Note:

    1. Appbase users should use the aggregationSize prop instead. The size prop would only set the size for hits not the aggregations.
    2. We recommend Appbase users to not use the size prop unless they are using hits because it can impact the query performance.

  • aggregationSize To set the number of buckets to be returned by aggregations.

    Note: This prop is only applicable when enableAppbase is set to true.

  • sortBy String [optional]

    sort the items by one of count, asc, desc. Defaults to count, which sorts the by the frequency of count value, most first.

  • showMissing Boolean [optional]

    defaults to false. When set to true it also retrives the aggregations for missing fields under the label specified by missingLabel.

  • missingLabel String [optional]

    defaults to N/A. Specify a custom label to show when showMissing is set to true.

  • showFilter Boolean [optional]

    show as filter when a value is selected in a global selected filters view. Defaults to true.

  • filterLabel String [optional]

    An optional label to display for the component in the global selected filters view. This is only applicable if showFilter is enabled. Default value used here is componentId.

  • URLParams Boolean [optional]

    enable creating a URL query string parameter based on the selected value of the chart. This is useful for sharing URLs with the component state. Defaults to false.

  • renderError String or JSX or Function [optional] can be used to render an error message in case of any error.

    Copy 
        renderError={(error) => (
            <div>
                Something went wrong!<br/>Error details<br/>{error}
            </div>
        )
    }

  • value string [optional] controls the current value of the component. It selects the item from the chart UI (on mount and on update). Use this prop in conjunction with onChange function.

  • onChange function [optional] is a callback function which accepts component's current value as a parameter. It is called when you are using the value props and the component's value changes. This prop is used to implement the controlled component behavior.

  • onError Function [optional] gets triggered in case of an error and provides the error object, which can be used for debugging or giving feedback to the user if needed.

  • index String [optional] The index prop can be used to explicitly specify an index to query against for this component. It is suitable for use-cases where you want to fetch results from more than one index in a single ReactiveSearch API request. The default value for the index is set to the app prop defined in the ReactiveBase component.

    Note: This only works when enableAppbase prop is set to true in ReactiveBase.

  • xAxisName String [optional] Label for x axis line

  • yAxisName String [optional] Label for y axis line

  • xAxisField String [optional] Field name to extract the x axis data for scatter chart

  • yAxisField String [optional] Field name to extract the y axis data for scatter chart

  • labelFormatter Function [optional] To customize the range labels, for example:

Copy 
    labelFormatter=(value)=>`${value} USD`

  • range Object an object with start and end keys and corresponding numeric values denoting the minimum and maximum possible slider values.

    range prop accepts Date objects as values corresponding to start and end keys when date-types are dealt with.

Copy 
    <ReactiveChart
        componentId="RangeSliderSensor"
        chartType="histogram"
        dataField="timestamp"
        title="Publication Year"
        range={{
            start: new Date('1980-12-12'),
            end: new Date('2000-12-12')
        }}
        queryFormat="date"            
    />

  • interval Number [optional] set the histogram bar interval, applicable when showHistogram is true. Defaults to Math.ceil((props.range.end - props.range.start) / 100) || 1.

  • includeNullValues Boolean [optional] If you have sparse data or document or items not having the value in the specified field or mapping, then this prop enables you to show that data. Defaults to false.

  • useAsFilter Boolean [optional] If set to false then data selection on chart UI would not filter the results. Defaults to true.

Demo


Extending

ReactiveChart component can be extended to

  1. Customize the chart UI using setOption,
  2. update the underlying DB query with customQuery, defaultQuery,
  3. specify how options should be filtered or updated using react prop.
Copy 
    <ReactiveChart
        // To customize the query to fetch chart data
        defaultQuery={(value, props) => ({
            "aggs": {
                "language_code": {
                    "terms": {
                        "field": "language_code"
                    }
                }
            }
        })}
         // To customize the query to filter results based on value selection
        customQuery={(value, props) => ({
            "query": {
                "term": {
                    [props.dataField]: value
                }
            }
        })}
        // Customize the chart UI, set custom echart option
        setOption={({ aggregationData }) => ({
            tooltip: {
                trigger: 'item',
            },
            legend: {
                orient: 'vertical',
                left: 'left',
            },
            series: [
                {
                    name: 'Access From',
                    type: 'pie',
                    radius: '50%',
                    data: aggregationData.map(item => ({
                        value: item.doc_count,
                        name: item.key,
                    })),
                    emphasis: {
                        itemStyle: {
                            shadowBlur: 10,
                            shadowOffsetX: 0,
                            shadowColor: 'rgba(0, 0, 0, 0.5)',
                        },
                    },
                },
            ],
        })}
        // specify how and which options are filtered using `react` prop.
        react={
            "and": ["pricingFilter", "dateFilter"],
            "or": ["searchFilter"]
        }
    />
  • customQuery Function is a callback function which accepts component's current value as a parameter and returns the data query to be applied to the component, as defined in Elasticsearch Query DSL. Note: customQuery is called on value changes in the ReactiveChart component as long as the component is a part of react dependency of at least one other component.
  • defaultQuery Function takes value and props as parameters and returns the data query to be applied to the source component, as defined in Elasticsearch Query DSL, which doesn't get leaked to other components. Read more about it here.
  • setOption Function ReactiveChart uses the Echarts library to render the UI. ReactiveChart component connects the search backend to retrieve the chart data. The setOption prop allows you to define the custom chart option support by Echarts to render any kind of chart UI. It accepts the an object containing the following properties:
    • aggregationData An array of aggregation buckets
    • data An array of search hits
    • rawData Search backend data in raw form
    • value Current selected value in chart UI
    For example,
    Copy 
        setOption={({ data, aggregationData, rawData, value }) => ({
        title: {
            text: "Languages"
        },
        tooltip: {
            trigger: 'item',
        },
        legend: {
            orient: 'vertical',
            left: 'left',
        },
        series: [
            {
                name: 'Access From',
                type: 'pie',
                radius: '50%',
                data: aggregationData.map(item => ({
                    value: item.doc_count,
                    name: item.key,
                })),
                emphasis: {
                    itemStyle: {
                        shadowBlur: 10,
                        shadowOffsetX: 0,
                        shadowColor: 'rgba(0, 0, 0, 0.5)',
                    },
                },
            },
        ],
    })}
  • react Object specify dependent components to reactively update ReactiveChart's options.
    • key String one of and, or, not defines the combining clause.
      • and clause implies that the results will be filtered by matches from all of the associated component states.
      • or clause implies that the results will be filtered by matches from at least one of the associated component states.
      • not clause implies that the results will be filtered by an inverse match of the associated component states.
    • value String or Array or Object
      • String is used for specifying a single component by its componentId.
      • Array is used for specifying multiple components by their componentId.
      • Object is used for nesting other key clauses.