[Bug Report][3.4.9] VDataTable i18n page options

[vincentauger]

In VDataTable, the options that are only numbers should not be sent to the i18n function t() as the keys do not exist causing warnings with i18n integrations.

Also, I'm not sure if there's another way, but having props like no-data-text expect a string that is a lcoale key and not a string seems counter intuitive? It's okay documented as such but the did work as expected in Vuetify 2 so perhaps it could be added to the upgrade guide. For example, doing :no-data-text="$t('somekey')" will look attempt to pass the retrun string of $t('somekey') to be passed through t again leading to a unknown key warning.

The itemsPerPageOptions lead to the following warnings in the console using vue-i18n:
[intlify] Not found '10' key in 'fr' locale messages.
[intlify] Fall back to translate '10' key with 'en' locale.
The warning is repeated for 25, 50, and 100.

There are a few ways to handle it, but it seems that the code should be changed to the following to work as initially intended using only a number in the default value.

  itemsPerPageOptions: {
    type: Array as PropType<readonly (number | { title: string | number, value: number })[]>,
    default: () => ([
-      { value: 10, title: '10' },
-      { value: 25, title: '25' },
-      { value: 50, title: '50' },
-      { value: 100, title: '100' },
+     10,
+     25,
+     50,
+     100,
-      { value: -1, title: '$vuetify.dataFooter.itemsPerPageAll' },
+   -1
    ]),
  },
  showCurrentPage: Boolean,
}, 'VDataTableFooter')

export const VDataTableFooter = genericComponent<{ prepend: never }>()({
  name: 'VDataTableFooter',

  props: makeVDataTableFooterProps(),

  setup (props, { slots }) {
    const { t } = useLocale()
    const { page, pageCount, startIndex, stopIndex, itemsLength, itemsPerPage, setItemsPerPage } = usePagination()

    const itemsPerPageOptions = computed(() => (
      props.itemsPerPageOptions.map(option => {
        if (typeof option === 'number') {
          return {
            value: option,
            title: option === -1
              ? t('$vuetify.dataFooter.itemsPerPageAll')
              : String(option),
          }
        }

        return {
          ...option,
         title: t(option.title),
        }
      })
    ))

Reference in repo:

https:/vuetifyjs/vuetify/blob/51f3f024a99e9a6c8ab5f8c29065f3e323e23b59/packages/vuetify/src/components/VDataTable/VDataTableFooter.tsx#L60C1-L98C7

[websitevirtuoso]

I may see the problem. but I need repoduction link. and after this I can do easy PR. so help from your side would be great

const itemsPerPageOptions = computed(() => (
      props.itemsPerPageOptions.map(option => {
        if (typeof option === 'number') {
          return {
            value: option,
            title: option === -1
              ? t('$vuetify.dataFooter.itemsPerPageAll')
              : String(option),
          }
        }

        return {
          ...option,
          title: t(option.title),
        }
      })
    ))

[vincentauger]

Currently, the only main issue is that the default value of the options are as follow:

default: () => ([
      { value: 10, title: '10' },
      { value: 25, title: '25' },
      { value: 50, title: '50' },
      { value: 100, title: '100' },
      { value: -1, title: '$vuetify.dataFooter.itemsPerPageAll' },
    ]),

The current code sees this and tries to return title: t(option.title) which looks for a i18n key '10'. That key doesn't exists and as you mentioned, shouldn't either as you shouldn't translate numbers. If the default value is changed to:

default: () => ([10,25,50,100,-1]),

the computed property itemsPerPageOptions will work as intended and just return numbers as string without trying to pass them into the t function. It seems that when the computed property was refactored to accept numbers, the default value wasn't changed.

As I'm working through this V2 to V2 migration for my code, to avoid issues, I am now passing them to avoid the error as follows but wanted to flag the bug.

<v-data-table
                                   dense
                                    :headers="stationHeaders"
                                    :items="stations"
                                    :items-per-page="5"
                                    :items-per-page-options="[5, 10, 25, 50, -1]"
                                    sorty-by="id"
                                    item-key="id"
                                    :loading="stationsLoading"
                                >

[websitevirtuoso]

Yes. but it didn't give me details. I need to reproduction link or repo. after that I can do PR and fix this problem

[vincentauger]

Hello @websitevirtuoso - you can find a reproduction here based on documentation examples for setting up vue-i18n and a base Vuetify create cli app.

Reproduction Repo

Just run pnpm install && pnpm dev and launch dev server and you'll see the following warnings:

[websitevirtuoso]

great. thanks

[vincentauger]

Thank you for all the work you're doing here! 🚀

[websitevirtuoso]

Created PR. Now need to wait reviewers

[xplloveyxl]

i18n,build, {0} not parse

[xplloveyxl]

add options is good
VueI18nPlugin({
include: [path.resolve(__dirname, './src/locales/**/*.{json,yaml,yml}')],
jitCompilation: false,
compositionOnly: false,
runtimeOnly: false
}),