"Unable to find table class for current entity" while pass an empty array to Form::create()

[MichalWadowski]

When I build form based on search result with multiple entities, I have an error if query result is empty.
e.g.:

// ContactsController.php
$contacts = $this->Contacts->find()->all();
$this->set('contacts', $contacts);

// index.ctp
echo $this->Form->create($contacts);

If $contacts is null, then NullContext is created, and view is rendered properly. If $contacts has array with entities, then EntityContext is created, and first entity is given to next processing. But if array is empty, then EntityContext is created, but it can't recognize an entity and throw exception.

I think, in FormHelper.php should be:

protected function _addDefaultContextProviders() {
// [...]
   (is_array($data['entity']) && !empty($data['entity']) && !isset($data['entity']['schema']))
// [...]
}

[markstory]

What do you think should happen? The entity context needs an entity to operate. At best we could switch to using a NullContext when the result set is empty.

[MichalWadowski]

I understand reason of exception, but I think application should behave different in this case. If Form::create accepts list, then it should expect that list may be empty.

[markstory]

Thanks for posting a solution, I can add a testcase and merge the changes in.

[markstory]

Closing as there is a pull request now. I had to take a slightly different approach as your solution caused a few tests to fail.