rmorrise opened a new issue, #14609:
URL: https://github.com/apache/grails-core/issues/14609
### Task List
- [x] Steps to reproduce provided
- [x] Stacktrace (if present) provided
- [x] Example that reproduces the problem uploaded to Github
- [x] Full description of the issue provided (see below)
### Steps to Reproduce
1. Check out and run the example project
2. POST to /master with the following data:
```
{
"details": [
{"detailType": "FOO", "fooProperty": "foo"},
{"detailType": "BAR", "barProperty": "bar"}
]
}
```
### Expected Behaviour
I think Grails should know how to automatically create a FooDetail and a
BarDetail by comparing the input discriminator property to the domain
subclasses that are mapped.
### Actual Behaviour
Grails creates a Detail which is neither FooDetail nor BarDetail, based on
the declared collection type in the Master class mapping. fooProperty and
barProperty are ignored. To get a correct mapping, it is necessary to customize
the binding (for example, by using a BindInitializer)
### Environment Information
- **Operating System**: Win7 x64
- **GORM Version:** 6.1.4.RELEASE
- **Grails Version (if using Grails):** 3.3.0.M2
- **JDK Version:** 1.8.0_131
### Example Application
-
[https://github.com/rmorrise/bindToSubclassExample](https://github.com/rmorrise/bindToSubclassExample)
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