MultiDropdownRange

MultiDropdownRange creates a multiple selection dropdown based numeric range UI component.

Example uses:

• filtering search results by prices in an e-commerce or food delivery experience.
• browsing movies by a ratings filter.

Usage

Basic Usage

<MultiDropdownRange
	componentId="PriceSensor"
	dataField="price"
	data={[
		{ start: 0, end: 10, label: 'Cheap' },
		{ start: 11, end: 20, label: 'Moderate' },
		{ start: 21, end: 50, label: 'Pricey' },
		{ start: 51, end: 1000, label: 'First Date' },
	]}
/>

Usage With All Props

<MultiDropdownRange
	componentId="PriceSensor"
	dataField="price"
	data={[
		{ start: 0, end: 10, label: 'Cheap' },
		{ start: 11, end: 20, label: 'Moderate' },
		{ start: 21, end: 50, label: 'Pricey' },
		{ start: 51, end: 1000, label: 'First Date' },
	]}
	defaultSelected={['Cheap']}
	placeholder="Select price range"
	showFilter={true}
	filterLabel="Price"
/>

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.
• data Object Array collection of UI labels with associated start and end range values.
• defaultSelected String Array [optional] pre-select a label from the data array.
• placeholder String [optional] placeholder to be displayed in the dropdown searchbox. Defaults to "Select a value".
• 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.
• innerProps Object [optional] specifies additional props for the internal components. Accepts an object with the specified keys. Read more about the usage here

Demo

View on Snack

Styles

MultiDropdownRange component supports style prop. Read more about it here.

It also supports an innerStyle prop with the following keys:

• label
• left
• button
• icon
• right
• body
• title
• checkbox

Read more about it here

Extending

MultiDropdownRange component can be extended to

1. customize the look and feel with style,
2. update the underlying DB query with customQuery,
3. connect with external interfaces using beforeValueChange, onValueChange and onQueryChange

<MultiDropdownRange
  ...
  style={{ paddingBottom: 10 }}
  customQuery={
    function(value, props) {
      return {
        match: {
          data_field: "this is a test"
        }
      }
    }
  }
  beforeValueChange={
    function(value) {
      // called before the value is set
      // returns a promise
      return new Promise((resolve, reject) => {
        // update state or component props
        resolve()
        // or reject()
      })
    }
  }
  onValueChange={
    function(value) {
      console.log("current value: ", value)
      // set the state
      // use the value with other js code
    }
  }
  onQueryChange={
    function(prevQuery, nextQuery) {
      // use the query with other js code
      console.log('prevQuery', prevQuery);
      console.log('nextQuery', nextQuery);
    }
  }
/>

• style Object CSS styles to be applied to the MultiDropdownRange component.
• customQuery Function takes value and props as parameters 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 MultiDropdownRange component as long as the component is a part of react dependency of at least one other component.
• beforeValueChange Function is a callback function which accepts component's future value as a parameter and returns a promise. It is called everytime before a component's value changes. The promise, if and when resolved, triggers the execution of the component's query and if rejected, kills the query execution. This method can act as a gatekeeper for query execution, since it only executes the query after the provided promise has been resolved.
• onValueChange Function is a callback function which accepts component's current value as a parameter. It is called everytime the component's value changes. This prop is handy in cases where you want to generate a side-effect on value selection. For example: You want to show a pop-up modal with the valid discount coupon code when a user searches for something in the MultiDropdownRange.
• onQueryChange Function is a callback function which accepts component's prevQuery and nextQuery as parameters. It is called everytime the component's query changes. This prop is handy in cases where you want to generate a side-effect whenever the component's query would change.