Ability to replace primaryKey field via config (6.x)

[asgraf]

Example use case:

$this->Crud->action()->setConfig('primaryKey', 'uuid');

this change makes FriendsOfCake/crud plugin compatible with dereuromark/cakephp-expose

[ravage84]

Wouldn't it make more sense to change this in the table itself?

Or why would one change this for the CRUD component but not in the table (thus for the whole application)?

A primary key normally doesn't get changed... 🤷

[asgraf]

@ravage84

A primary key normally doesn't get changed... 🤷

Yes, normally it does not (see dereuromark/cakephp-expose for details)
This change is created only to make FriendsOfCake/crud plugin compatible with dereuromark/cakephp-expose

why would one change this for the CRUD component but not in the table (thus for the whole application)?

$this->Crud->action()->setConfig('primaryKey', 'uuid'); applies this change only for SQL query generated by Crud action leaving other queries untouched

With cakephp-expose you can have urls like:
/view/SAftQtJqYjAs3XRMsWgRfk instead of /view/3 (url contains short-uuid instead numeric id)
(see expose examples)

For url like /view/SAftQtJqYjAs3XRMsWgRfk Crud would try to generate SQL like this:

SELECT [fields list] FROM articles as Articles WHERE Articles.id = 'SAftQtJqYjAs3XRMsWgRfk'

This would fail because id is autoincrement int field
After this patch with $this->Crud->action()->setConfig('primaryKey', 'uuid'); and dereuromark/cakephp-expose Crud will generate valid SQL as follows:

SELECT [fields list] FROM articles as Articles WHERE Articles.uuid = 'efbfbdef-bfbd-7d56-efbf-bdefbfbd41ef'

SAftQtJqYjAs3XRMsWgRfk is short version of efbfbdef-bfbd-7d56-efbf-bdefbfbd41ef (see keiko/uuid-shortener)

Wouldn't it make more sense to change this in the table itself?

Changing primary key at table level would break all queries with $query->contain() in whole app (foreign keys are numeric ids not uuids). See dereuromark/cakephp-expose for details

[davidyell]

Seems like a test is needed to prove the functionality

[dereuromark]

@asgraf Are you still adding the test? Then this could get merged.