Creating a UI Field to display chart data

asibilia2 years ago

1 1

const MyChartField: GroupField = {
  name: 'my-chart-field',
  type: 'group',
  required: true,
  fields: [
    {
      name: 'Preview',
      type: 'ui',
      admin: {
        components: {
          Cell: (args) => {
            console.log('cell', args)
            return <div>Cell</div>
          },
          Field: (args) => {
            // Uncommenting the following hooks causes infinite re-renders

            // Get the `x` field state.
            // const x = useFormFields(
            //   ([fields, dispatch]) => fields['my-chart-field.x']
            // )

            // Get the `y` field state.
            // const y = useFormFields(
            //   ([fields, dispatch]) => fields['my-chart-field.y']
            // )


            console.log('field', args)
            return <div>Field</div>
          },
        },
      },
    },
    Slider({ name: 'x' }),
    Slider({ name: 'y' }),
  ],
}

• Selected Answer
  

  JarrodMFlesch

  2 years ago

  Hey @asibilia can you throw this into another file and then import that component here? I am unsure about using react right in the config file itself. Let me know if you get around to giving that a shot!

  4 replies
• 

  asibilia2 years ago

  Unfortunately, that doesn't seem to change anything. I actually had the Field component abstracted out to a separate file already but inlined it in the code snippet for clarity.

  // my-chart-group-field.ts
  const MyChartField: GroupField = {
    name: 'my-chart-field',
    type: 'group',
    required: true,
    fields: [
      {
        name: 'Preview',
        type: 'ui',
        admin: {
          components: {
            Cell: (args) => {
              console.log('cell', args)
              return <div>Cell</div>
            },
            Field: MyChartUIField,
          },
        },
      },
      Slider({ name: 'x' }),
      Slider({ name: 'y' }),
    ],
  }
  
  // my-chart-ui-field.tsx
  const MyChartUIField: FunctionComponent<{ path: string }> = ({ path }) => {
      // Uncommenting the following hooks causes infinite re-renders
      
      // Get the `x` field state.
      // const x = useFormFields(
      //   ([fields, dispatch]) => fields.x
      // )
      
      // Get the `y` field state.
      // const y = useFormFields(
      //   ([fields, dispatch]) => fields.y
      // )
      
      
      console.log('field', args)
      return <div>Field</div>
  }
  
  export default React.memo(ProjectilePreview, isEqual)

  I've also memoized the child Field component just in case it was caused by the props changing (which doesn't have any effect)

• 

  JarrodMFlesch

  2 years ago

  I am curious what the Slider field is doing, does that have a custom component? I just threw an example together just like yours and I am not seeing infinite re-renders.

• 

  asibilia2 years ago

  Okay, so i think you're onto something... If i replace my custom slider components with just a simple number input I don't get the re-rendering when using useFormFields in the UI field.

  Here's how I have my slider component set up, I must be doing something wrong...

  slider/
    - cell.tsx <-- Cell
    - config.ts 
    - input.tsx <-- Field
  

  // slider/cell.tsx
  import React from 'react'
  import type { FunctionComponent } from 'react'
  
  import type { SliderCellProps } from './types'
  import './styles.scss'
  
  const Cell: FunctionComponent<SliderCellProps> = (props) => {
    const { cellData } = props
  
    if (!cellData) return null
  
    return (
      <input className="slider-cell" type="slider" value={cellData} disabled />
    )
  }
  
  export default Cell

  // slider/input.tsx
  import React from 'react'
  import type { FunctionComponent } from 'react'
  
  import { useFieldType } from 'payload/components/forms'
  import { Label } from 'payload/components/forms'
  
  import { validateNumberInRange } from './config'
  import { SliderInputProps } from './types'
  
  import './styles.scss'
  
  const BASE_CLASS = 'slider'
  
  const Input: FunctionComponent<SliderInputProps> = (props) => {
    const { path, label, required, min, max, admin } = props
  
    const { value = 0, setValue } = useFieldType<number>({
      path,
      validate: validateNumberInRange(min, max),
    })
  
    return (
      <div className={BASE_CLASS}>
        <Label htmlFor={path} label={label} required={required} />
        <input
          className={`${BASE_CLASS}__input`}
          type="range"
          onChange={(e) => setValue(e.target.value)}
          value={value}
          min={min}
          max={max}
          step={admin.step}
        />
      </div>
    )
  }
  export default Input

  // slider/config.ts
  import get from 'lodash/get'
  import type { Field, NumberField } from 'payload/types'
  
  import Cell from './cell'
  import Input from './input'
  
  export const validateNumberInRange =
    (min = 0, max = 100) =>
    (value: number): true | string => {
      return (
        (value >= min && value <= max) || 'Value must be between the min and max'
      )
    }
  
  type SliderProps = Omit<NumberField, 'type'>
  const Slider = ({
    name,
    min = 0,
    max = 100,
    ...overrides
  }: SliderProps): Field => ({
    required: true,
    ...(overrides ?? {}),
    name,
    type: 'number',
    validate: validateNumberInRange(min, max),
    min,
    max,
    admin: {
      step: get(overrides, ['admin', 'step'], 5),
      components: {
        Field: Input,
        Cell,
      },
    },
  })
  
  export default Slider

• 

  asibilia2 years ago

  In case anyone is wondering, it seems to be related to the use of useFieldType inside slider/input.tsx. If I change that to useField everything works as expected.