Change from 4 to 5 - can't access some subpages

RaVeN · July 8, 2025, 1:49pm

HI, I’m trying out to change from V4.8 to V5 and I do get an error when trying to access some subpages via the panel - it throws me the error “Cannot assign string to property Kirby\Form\Field::$when of type ?array”. Sorry for that probably stupid question (I’m not a programmer), but what does this mean and how can I fix this? Is this because I used the type: structure in the blueprint for my fields?

texnixe · July 9, 2025, 5:06am

Could you post the blueprint of the page in question, please?

RaVeN · July 9, 2025, 1:08pm

Sure, Thank you:

title: Arbeitsgruppen

tabs:
  main:
    columns:
      main:
        width: 3/4
        sections:
          content:
            type: fields
            fields:
              main_content:
                label: Main Content
                extends: fields/maincontent
              news:
                label: News / Info
                extends: fields/textinput

            
      sidebar:
        width: 1/4
        sections:
          workgroups:
            type: pages
            label: Workgroups
            layout: cardlets
            image: false
            query: page.children
            text: "{{ page.title }}"
            info: "{{ page.description.short(500) }}"
            pages: true
            template: workgroup

  seo: seo/page

and the fields snippets are:

label: Main Content 
type: structure

columns:
  subheadline:
    label: Sub-Headline
    width: 1/4

  description:
    label: Description
    width: 1/2
  files:
    label: Files Upload
    width: 1/6

fields:
  subheadline:
    label: Sub-Headline
    type: text
    required: true
  description:
    label: Description
    extends: fields/textinput
    required: true
  people: 
    label: People
    extends: fields/members 
  files:
    label: Files Upload
    extends: fields/files
    width: 1/2
  links:
    label: External Links
    extends: fields/links
    width: 1/2
  textinput:
    label: News / Info
    extends: fields/textinput
  buttons:
    label: Page Buttons
    extends: fields/buttons

and

label: Textfeld
type: writer
autofocus: true
nodes: true
headings:
  - 2
  - 3
  - 4
toolbar:
  marks:
    - bold
    - italic
    - underline
    - strike
    - sub
    - sup
    - '|'
    - quote
    - '|'
    - link
    - email
    - '|'
    - clear
  inline: false
help: >
  For a list select unordered or ordered list. Use **Enter** to add a new list item, **Tab** to indent, and **Shift+Tab** to outdent.
  For keeping a new line to automatically gets wrapped in a paragraph, use **Shift+Enter** for a hard break.

texnixe · July 9, 2025, 2:52pm

Hm, there are a lot of fields that are hidden away in their own files. I was expecting to see some when conditions somewhere.

RaVeN · July 10, 2025, 7:52am

Not so sure if I understand you - you would suggest conditions or you thought the problem occurs because there were some conditions?
I can also post the other snippets of members, files, links, and buttons (though, everything worked fine in Kirby 4.8.0 and I haven’t changed anything with the code):

Buttons:

type: group
fields:
  buttons:
    label: Page Buttons
    type: structure
    width: 1/1
    fields:
      page: 
        label: Link to Page
        type: pages
        multiple: false
        query: page.children
        help: Select the subpages you want to link as buttons.
      label:
        label: Button Label
        type: text
        help: Optional custom label for the button. If left empty, the page title will be used.

links:

label: External Links
type: structure
fields:
  label:
    label: Link Text
    type: text
  url:
    label: URL
    type: url

files:

label: Files Upload
type: files
multiple: false
accept:
  - image/jpeg
  - image/png
  - application/pdf

members:

type: group
fields:
  people:
    label: People and Contact
    type: structure
    fields:
      function:
        label: Function
        extends: fields/textinput
      name:
        label: Name
        extends: fields/textinput
      pronouns:
        label: Pronouns
        extends: fields/textinput
      affiliation:
        label: Affiliation
        extends: fields/textinput
      contact:
        label: Contact
        extends: fields/textinput

distantnative · July 10, 2025, 11:31am

The error message suggests that you are using somewhere a when option and that’s something wrong with that. This is why we are searching for that when condition in the blueprints you posted but I cannot see any. But since you are using a lot of extends it’s probably in one of those that we cannot see.

RaVeN · July 10, 2025, 12:01pm

Ah, OK. So the only “when” that I do have used is within the “events”. I’m sorry, I guess I confused the parent’s page with the actual children’s blueprints. There actually IS a “when” with the events:

title: AG-Subpage

tabs:
  main:
    label: Main Content
    type: fields
    fields:
      main_content:
        label: Description
        extends: fields/maincontent_events
        width: 1/1
      news:
        label: News / Info
        extends: fields/textinput
        width: 1/1
  
  seo: seo/page

this is the Main Content including Events Blueprint:

label: Main Content 
type: structure

columns:
  subheadline:
    label: Sub-Headline
    width: 1/4
  description:
    label: Description
    width: 1/2
  files:
    label: Files Upload
    width: 1/6
  events:
    label: Events
    width: 1/6

fields:
  subheadline:
    label: Sub-Headline
    type: text
  description:
    label: Description
    extends: fields/textinput
  people: 
    label: People extern
    extends: fields/members 
  info:
    label: News / Info
    extends: fields/textinput
  files:
    label: Files Upload
    extends: fields/files
    width: 1/3
  links:
    label: External Links
    extends: fields/links
    width: 1/3
  email:
    label: Emailcontact
    extends: fields/email
    width: 1/3
  buttons:
    label: Page Buttons
    extends: fields/buttons 
  events:
    label: Events
    extends: fields/event
    width: 1/3

and here the events including conditions:

type: group    
fields:
  eventSessions:
    label: Event Sessions
    type: structure
    max: 20

    columns:
      eventTitle:
        label: Title
        width: 1/2

      start_date:
        label: Start Date
        type: date
        format: DD.MM.YYYY
        width: 1/4

      start_time:
        label: Time
        type: time
        width: 1/4
    
    fields:
      eventTitle:
        label: Headline Session Title
        type: text
        required: true
        help: This field is required.
        width: 1/1
      
      eventDescription:
        label: Event Description
        extends: fields/textinput
        width: 1/1

      start_date:
        label: Start Date
        type: date
        required: true
        help: This field is required.
        format: YYYY-MM-DD
        width: 1/4
        when:
        event_type: one-off
      
      end_date:
        label: End Date
        type: date
        format: YYYY-MM-DD
        required: true
        help: This field is required.
        width: 1/4
        when:
        event_type: one-off

      start_time:
        label: Start Time
        type: time
        required: true
        help: This field is required.
        interval: 15        # minute interval for time picker
        width: 1/4

      end_time:
        label: End Time
        type: time
        required: true
        help: This field is required.
        interval: 15
        width: 1/4

      archive_mode:
        label: Archive Mode
        type: radio
        required: true
        help: This field is required.
        options:
          auto: Automatic
          manual: Manual
        default: auto
        width: 1/3
        help: Choose how the event will be archived - in automatic mode, it archives one day after the event ends. In manual mode, the archiving date archives not before at least two custom days after the event ends.
      
      should_archive:
        label: Ready for Archive
        type: toggle
        text:
          - "Do not archive yet"
          - "Archive now when due"
        default: false
        width: 1/3
        when:
          archive_mode: manual
        help: If set to "Archive now when due", this event will automatically move to the archive page.      

      archive_date:
        label: Archive Date
        type: date 
        width: 1/3
        help: In automatic mode, archive date will be one day after event ends. In manual mode, it will be two days after event ends. Adjust if needed.
        
      #gap:
        #type: gap
        #width: 1/3

      event_type:
        label: Event Type
        type: radio
        required: true
        help: This field is required.
        options:
          one-off: One-off
          recurring: Recurring
        default: one-off
        width: 1/3

      recurring_days:
        label: Recurs On Weekdays
        type: checkboxes
        options:
          - monday
          - tuesday
          - wednesday
          - thursday
          - friday
          - saturday
          - sunday
        when:
          event_type: recurring
        width: 1/3

      recurring_pattern:
        label: Recurrence Pattern
        type: radio
        options:
          weekly: Every Week
          biweekly: Every 2 Weeks
          triweekly: Every 3 Weeks
          monthly: Once a Month
          bimonthly: Twice a Month
          ordinal_month: Every 1st/2nd/Last Weekday of the Month
        when:
          event_type: recurring
        width: 1/3

      recurring_note:
        label: Recurrence Details
        extends: fields/textinput
        help: Add a free-form description if needed (e.g., “Every 2nd Tuesday until June”).
        when:
          event_type: recurring
        width: 1/1

      location:
        label: Location
        required: true
        help: This field is required.
        extends: fields/textinput
        width: 1/1

      additional_info:
        label: Additional Info
        extends: fields/textinput
        width: 1/1

  pdf:
    label: PDF Attachment
    type: files
    max: 3
    multiple: false
    accept:
      - application/pdf
    width: 1/2

  image:
    label: Event Image
    type: files
    max: 3
    multiple: false
    accept:
      - image/jpeg
      - image/png
    width: 1/2

texnixe · July 10, 2025, 12:08pm

Don’t know if it comes from pasting here, but there is an indentation missing here?

RaVeN · July 10, 2025, 12:14pm

OMG… I AM SOOO SORRY for taking your time for this SUPERSTUPID mistake YEAH, sure, there were the indents missing… AND now it works… THANKS A LOT and SORRY again! (though, still don’t know why kirby 4.8.0 did not throw me an error, but good that kirby 5 is more sensitive )

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Change from 4 to 5 - can't access some subpages

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