Question

我们正在构建一个Ember / Java应用程序，我们在maven构建期间使用Rhino来预编译我们的Handlebars模板。直到今天我们都使用了Handlebars RC3和Ember RC3，生活还不错。今天我们尝试更新到Ember RC6和Handlebars 1.0.0，现在我们的Rhino预编译器提供了这个：

js: "src/main/js/third-party/handlebars-1.0.0.js", line 2024: uncaught JavaScript runtime     
 exception: TypeError: Cannot call method "replace" of undefined
at src/main/js/third-party/handlebars-1.0.0.js:2024
at src/main/js/third-party/handlebars-1.0.0.js:2038
at src/main/js/third-party/handlebars-1.0.0.js:1747
at src/main/js/third-party/handlebars-1.0.0.js:1368
at src/main/js/third-party/handlebars-1.0.0.js:1860
at src/main/js/third-party/handlebars-1.0.0.js:1356
at src/main/js/third-party/handlebars-1.0.0.js:1860
at src/main/js/third-party/handlebars-1.0.0.js:1356
at src/main/js/rhino-handlebars-precompiler.js:75 (precompile)
at src/main/js/rhino-handlebars-precompiler.js:89 (init)
at src/main/js/rhino-handlebars-precompiler.js:93
at src/main/js/rhino-handlebars-precompiler.js:15

我们尝试了我们自己的Rhino编译器和这里的https://github.com/locnguyen/ember-rhino-precompiler。

更新

在深入研究Handlebars之后，似乎Handlebars-1.0.0产生的操作码与Handlebars RC3略有不同，特别是它缺少对_triageMustache助手的调用。对于这个把手片段：

{{#if enableLinks}}<a href="/foo?userId={{unbound loginAsAdminId}}&userAsId={{unbound legacyUserId}}" id="logoutAsLink">Return to {{loginAsAdminName}}</a>{{/if}}

使用RC3，我们得到了这个：

in compile appendContent "<a href="/userportal/returnToAdmin?userId="
getContext 0
pushStringParam "loginAsAdminId" "ID"
pushProgram
pushProgram
emptyHash
invokeKnownHelper 1 "unbound"
appendEscaped
appendContent "&userAsId="
getContext 0
pushStringParam "legacyUserId" "ID"
pushProgram
pushProgram
emptyHash
invokeKnownHelper 1 "unbound"
appendEscaped
appendContent "" id="logoutAsLink">Return to "
getContext 0
pushStringParam "loginAsAdminName" "ID"
pushProgram
pushProgram
emptyHash
invokeKnownHelper 1 "_triageMustache"
appendEscaped
appendContent "</a>"

使用1.0.0，我们得到了这个：

in compile appendContent "<a href="/userportal/returnToAdmin?userId="
getContext 0
pushStringParam "loginAsAdminId" "ID"
pushProgram
pushProgram
emptyHash
invokeKnownHelper 1 "unbound"
appendEscaped
appendContent "&userAsId="
getContext 0
pushStringParam "legacyUserId" "ID"
pushProgram
pushProgram
emptyHash
invokeKnownHelper 1 "unbound"
appendEscaped
appendContent "" id="logoutAsLink">Return to "
getContext 0
pushStringParam "loginAsAdminName" "ID"
pushProgram
pushProgram
emptyHash
invokeHelper 1
appendEscaped
appendContent "</a>"

请注意，最后一次调用invokeHelper时缺少帮助程序名称。这就是事情正在发生的地方。我不知道车把还不知道为什么它会丢失。

谢谢，斯科特

Answer 1

在这里回答我自己的问题：显然Ember RC6与Handlebars 1.0.0不兼容。看到这个帖子（我知道它引用了RC5，但RC6中仍然存在问题）：http://discuss.emberjs.com/t/ember-rc-5-is-not-working-properly-with-handlebars-1-0-0/1391

我通过樱桃选择此提交来修复它：https://github.com/emberjs/ember.js/commit/4023186ea157a8687ac611181e2ca49e5fc891d5

使用Rhino的Handlebars预编译失败，Handlebars 1.0.0 - 缺少_triageMustache

1 个答案: