Feature/dev 70 multiple entry authors

[i-just]

Description

• created new entries_authors table.
• added migration to create new table and migrate content from entries to entries_authors table
• added table to the Install migration
• authorId removed from entries table
• you can specify max authors per section
• Entry::getAuthor() behaves the same as in v4, but returns the one author with lowest sortOrder for given entry
• new Entry::getAuthors() returns all authors ordered by sortOrder
• edit entry template accepts multiple authors (with the ability to sort); minimum 1 author required (defaults to currently logged in user), maximum the number of authors defined for the section
• you can query entries by authorId, author (as before) and by authorsIds and authors (new)
• querying by authorId (e.g. ->authorId(1)) will return all entries where at least one of the authors matches the provided ID
• querying by authorsIds (e.g. ->authorsIds([1, 2])) will return all entries authored by exactly those 2 authors; (in other words, the parameters are joined by and)

Related issues

DEV-70

[linear]

DEV-70 Multi-author entries

Sections or entry types should be able to choose the maximum number of authors that can be assigned to entries.

I think we would still want to keep Entry::etAuthor() which would return the “primary” author (whoever is listed first), plus add a new getAuthors() method for returning all of them.

#8134