The listener is used by the Collection type as well as the Choice and Entity type (with multiple
selection). The effect is that you can have for example this model:
class Article
{
public function addTag($tag) { ... }
public function removeTag($tag) { ... }
public function getTags($tag) { ... }
}
You can create a form for the article with a field "tags" of either type "collection" or "choice"
(or "entity"). The field will correctly use the three methods of the model for displaying and
editing tags.
ad (1): HTML4 "id" attributes are limited to strings starting with a letter and containing only letters, digits, underscores, hyphens, periods and colons.
ad (2): Property paths contain three special characters needed for correct parsing: left/right bracket and period.
The rules for form naming are:
* Names may start with a letter, a digit or an underscore. Leading digits or underscores will be stripped from the "id" attributes.
* Names must only contain letters, digits, underscores, hyphens and colons.
* Root forms may have an empty name.
Solves #1919 and #3021 on a wider scope.
Commits
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57e1aeb Fixed undefined index notice in readProperty() method (PropertyPath)
Discussion
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Fixed undefined index notice in readProperty() method (PropertyPath)
Hi,
For some reasons, I get `notice` errors on `readProperty()` with Propel:
Notice: Undefined index: 0 in /Users/william/projects/Propel/testProjects/symfony2/vendor/symfony/src/Symfony/Component/Form/Util/PropertyPath.php line 284
The `PropelObjectCollection` implements `ArrayAccess`, the `readProperty()` method does not check if the given `index` exists so the `notice` error is thrown. I suppose to check whether the index exists or not has to be added.
Regards,
William
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by fabpot at 2011/09/27 23:42:07 -0700
The patch is probably not what we want to do. First, I suppose that you are not creating the propertyPath by hand. If that is the case, we need to understand why the property path does not exist. Then, even if we might want to check the existence of the index, if it does not exist, we should probably throw an exception instead of just ignoring the problem.
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by willdurand at 2011/09/28 01:14:49 -0700
My bad. This is a Propel bug due to `ArrayObject`. It throws a notice error if the index is not found in `offsetGet()` which is wrong according to the `ArrayAccess` interface. If the index is not found, we have to return `null`.
@fabpot Are you agree with that (for the `null` value) ?
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by fabpot at 2011/09/28 01:17:09 -0700
My point is that it should never happen under normal circumstances.
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by willdurand at 2011/09/28 01:23:55 -0700
@fabpot Not sure to get it.
The fact is that it tries to get the value (`getValue()`) of a fresh object, just added to the `collection` when I'm submitting a form with a `CollectionType` and a new entry in it.
I mean it tries to get this new object (not yet persisted, not yet in the collection) in the collection (`getValue()` -> `readProperty()`) which implements `ArrayAccess` but this object cannot be in the collection at this time.
Am I wrong ?
And, without this notice error thrown by Propel, I probably never opened this issue...
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by willdurand at 2011/09/29 06:40:34 -0700
@fabpot: you can try this example: http://www.propelorm.org/cookbook/symfony2/mastering-symfony2-forms-with-propel.html#manytomany_relations in order to make your own tests. Will it be enough?
As I said, it throws a weird notice for the reasons above.
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by jaugustin at 2011/10/04 12:58:10 -0700
any news on this ?
@fabpot did you have time to look at the test case ?
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by cedriclombardot at 2011/11/09 14:29:42 -0800
@fabpot: can we have news about this ?
