d2/src/model/helpers/attibutes.js

Javascript library for DHIS2

import {
    areDefinedAndEqual,
    isNullUndefinedOrEmptyString,
} from '../../lib/check'
import { pick } from '../../lib/utils'

const getValue = pick('value')
const getAttributeValueAttributeName = pick('attribute.name')

function createPropertyDefinitionsForAttributes(
    attributeProperties,
    getAttributeValues,
    setAttributeValues,
    setDirty
) {
    return Object.keys(attributeProperties).reduce(
        (propertyDefinitions, attributeName) => {
            propertyDefinitions[attributeName] = {
                enumerable: true,
                get() {
                    const attributeValues = getAttributeValues()

                    return attributeValues
                        .filter(
                            attributeValue =>
                                getAttributeValueAttributeName(
                                    attributeValue
                                ) === attributeName
                        )
                        .reduce(
                            (current, attributeValue) => attributeValue.value,
                            undefined
                        )
                },
                set(value) {
                    const attributeValue = getAttributeValues()
                        .filter(av => av.attribute.name === attributeName)
                        .reduce((current, av) => av, undefined)

                    if (areDefinedAndEqual(getValue(attributeValue), value)) {
                        return // Don't do anything if the value stayed the same
                    }

                    if (attributeValue) {
                        // Remove the attributeValue from the array of attributeValues on the object
                        // This is done because the server can not handle them properly when empty strings
                        // as values are sent. It will properly remove the attributeValue
                        // on the server side when they are not being send to the server at all.
                        if (isNullUndefinedOrEmptyString(value)) {
                            const remainingAttributeValues = getAttributeValues().filter(
                                av => av !== attributeValue
                            )
                            setAttributeValues(remainingAttributeValues)
                        }

                        attributeValue.value = value
                    } else {
                        // Add the new attribute value to the attributeValues collection
                        setAttributeValues(
                            getAttributeValues().concat({
                                value,
                                attribute: {
                                    id: attributeProperties[attributeName].id,
                                    name:
                                        attributeProperties[attributeName].name,
                                },
                            })
                        )
                    }

                    // Set the model to be dirty
                    setDirty()
                },
            }

            return propertyDefinitions
        },
        {}
    )
}

export default createPropertyDefinitionsForAttributes