diff options
Diffstat (limited to 'src/ng/compile.js')
| -rw-r--r-- | src/ng/compile.js | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/ng/compile.js b/src/ng/compile.js index 5508605e..f39b0935 100644 --- a/src/ng/compile.js +++ b/src/ng/compile.js @@ -768,13 +768,14 @@ function $CompileProvider($provide) { $element = attrs.$$element; if (newIsolateScopeDirective) { - var LOCAL_REGEXP = /^\s*([@=&])\s*(\w*)\s*$/; + var LOCAL_REGEXP = /^\s*([@=&])(\??)\s*(\w*)\s*$/; var parentScope = scope.$parent || scope; forEach(newIsolateScopeDirective.scope, function(definiton, scopeName) { var match = definiton.match(LOCAL_REGEXP) || [], - attrName = match[2]|| scopeName, + attrName = match[3] || scopeName, + optional = (match[2] == '?'), mode = match[1], // @, =, or & lastValue, parentGet, parentSet; @@ -796,6 +797,9 @@ function $CompileProvider($provide) { } case '=': { + if (optional && !attrs[attrName]) { + return; + } parentGet = $parse(attrs[attrName]); parentSet = parentGet.assign || function() { // reset the change, or we will throw this exception on every $digest |