TypeError: Cannot read property 'get' of undefined

[lukeocodes]

Describe the bug

I have enabled i18n for content authoring. I believe I should be able to save a post in the primary language without adding all the translations at the same time. When I try to save, I get no visible error. Instead, I get this error in the console.

To Reproduce

0. On a site configured as my config linked below
1. Go to /admin
2. Click on 'New Blog Post'
3. Complete the form for the English post
4. Try and click on 'Save'
5. See error in console

Expected behavior

0. On a site configured as my config linked below
1. Go to /admin
2. Click on 'New Blog Post'
3. Complete the form for the English post
4. Try and click on 'Save'
5. Saves only the translation you've created

Screenshots

Applicable Versions:

• Netlify CMS: 2.10.63
• Git provider: GitHub
• OS: Mac
• Browser version: Version 86.0.4240.80 (Official Build) (x86_64)

CMS configuration

https://github.com/Nexmo/deved-platform/blob/i18n-netlify-cms/static/admin/config.yml

Additional context

If I complete all the fields for all the languages, it then lets me save!

[lukeocodes]

This error occurred in these other issues (#4327 #3772 #3690) but based on the config and the lack of errors I couldn't be sure if related. They're all closed without resolution too.

[frankspin89]

Yes, this error seems to be related only to creating new content without entering all translations.

Versions:

• "netlify-cms-app": "^2.12.27",
• git-gateway, local_backend
• OS: Windows 10
• Browser version: Edge Version 86.0.622.43 (Official build) (64-bit)

app.js

// This global flag enables manual initialization.
window.CMS_MANUAL_INIT = true

import CMS from 'netlify-cms-app'

import { pages } from './collections/pages'


CMS.init({
  config: {
    load_config_file: false,
    local_backend: true,
    media_folder: '/static/meda',
    public_folder: '/meda',
    backend: {
      name: 'git-gateway'
    },
    media_library: {
      name: '',
      config: {
        max_file_size: 700000
      }
    },
    i18n: {
      structure: 'multiple_files',
      locales: ['nl', 'en', 'de'],
      default_locale: 'nl'
    },
    collections: [pages]
  },
})

Pages collection

import { image } from "../partials/image"

const fields = [
  {
    label: 'Title',
    name: 'title',
    widget: 'string',
    required: false,
    i18n: true
  },
  {
    label: 'Url',
    name: 'url',
    widget: 'string',
    required: false,
    i18n: true
  },
  image
]

const pages = {
  label: 'Pages',
  name: 'pages',
  create: true,
  i18n: true,
  media_folder: 'images',
  public_folder: 'images',
  format: 'frontmatter',
  path: '{{slug}}/index',
  editor: {
    preview: false
  },
  folder: 'content/pages',
  fields: [
    ...fields
  ],
}


export {
  pages
}

Image

  label: "Image",
  name: 'image',
  widget: 'object',
  i18n: true,
  fields: [
    {
      label: 'Source',
      name: 'source',
      widget: 'image',
      required: false,
      i18n: true
    },
    {
      label: 'Alt text',
      name: 'alt',
      widget: 'string',
      required: false,
      i18n: true
    },
  ]
}

Error on creating page

netlify-cms-app.js:167 Uncaught (in promise) TypeError: Cannot read property 'get' of undefined
    at eval (netlify-cms-app.js:167)
    at eval (netlify-cms-app.js:1)
    at it.__iterate (netlify-cms-app.js:1)
    at it.reduce (netlify-cms-app.js:1)
    at s (netlify-cms-app.js:167)
    at t.serializeValues (netlify-cms-app.js:167)
    at r (netlify-cms-app.js:34)
    at eval (netlify-cms-app.js:43)
    at Array.forEach (<anonymous>)
    at t.serializeI18n (netlify-cms-app.js:43)

[lukeocodes]

Let me know if you need anything else, happy to help :)

[sammy42]

Hi @lukeocodes, did you manage to solve this issue or find a workaround ?
I cannot save any records and setting fields as required: false, default: "" doesn't help.

[lukeocodes]

Seemed to me to be a limitation of i18n, to assume there is always a translation

[sammy42]

It's a big limitation in some situations, limitation which isn't written anywhere in the doc, and presents itself as a bug to the users.
Basically with i18n all the fields become mandatory and for every language.
With a dozen languages to translate and many keys in each document there is no way to save a draft after editing a subset of them.
It feels like it's the required: false option that doesn't work.
This bug appears even when all the fields are optional.