Creating article with filtered category

[Denitz]

Steps to reproduce the issue

Set error reporting to development
Open articles manager
Filter articles by category
Create new article

Expected result

No errors

Actual result

See PHP notice:

( ! ) Notice: Array to string conversion in \administrator\components\com_categories\models\fields\categoryedit.php on line 281

System information (as much as possible)

Joomla 3.8 RC1

Additional comments

Since we have multiple categories filter, first filtered category should be pre-configured for new articles.

[ghost]

Confirmed:

[alikon]

undesidered side effect from #17668

make no sense to check if "Allowed to add" on multiple categories since 1 article is related to 1 and only 1 category https://github.com/joomla/joomla-cms/blob/staging/administrator/components/com_content/controllers/article.php#L50

[infograf768]

@laoneo
As the first Notice concerns the fields, could you have a look?

[laoneo]

The problem is not fields itself, the issue is that JForm->getAttribute is returning an array instead of a string as it was before.

[Shazrina1994]

it always should not first filtered category should be pre-configured for new articles.
as @Denitz said under additional comments want to think of.

[Shazrina1994]

as i tested it didnt give me as selected filter order and sometimes gave me the highest categorize id when new article added.

[alikon]

test/comment #18090

[joomla-cms-bot]

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/17974

[ghost]

closed as having Pull Request #18090

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[laoneo]

Does that pr fix all the issues here?

[alikon]

not sure
is a dirty one 😢

[Quy]

@franz-wohlkoenig Please reopen.

[joomla-cms-bot]

Set to "open" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/17974

[ghost]

reopened as stated above.

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[ggppdk]

I have made PR #18176

[joomla-cms-bot]

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/17974

[ghost]

closed as having Pull Request #18176

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