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Diffstat (limited to 'docs/content/guide/directive.ngdoc')
| -rw-r--r-- | docs/content/guide/directive.ngdoc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/content/guide/directive.ngdoc b/docs/content/guide/directive.ngdoc index 2f93ef33..925268bb 100644 --- a/docs/content/guide/directive.ngdoc +++ b/docs/content/guide/directive.ngdoc @@ -336,7 +336,9 @@ compiler}. The attributes are: Given `<widget my-attr="parentModel">` and widget definition of `scope: { localModel:'=myAttr' }`, then widget scope property `localModel` will reflect the value of `parentModel` on the parent scope. Any changes to `parentModel` will be reflected - in `localModel` and any changes in `localModel` will reflect in `parentModel`. + in `localModel` and any changes in `localModel` will reflect in `parentModel`. If the parent + scope property doesn't exist, it will throw a NON_ASSIGNABLE_MODEL_EXPRESSION exception. You + can avoid this behavior using `=?` or `=?attr` in order to flag the property as optional. * `&` or `&attr` - provides a way to execute an expression in the context of the parent scope. If no `attr` name is specified then the attribute name is assumed to be the same as the |