quickinstaller.installProduct“安装"什至不存在的东西.如何提出例外情况?

问题描述

我的产品中有一个config.py，具有:

I have a config.py in my product, having:

DEPENDENCIES = ['bbbbbbbbbbbb'] #This doesn't exist

在我的setuphandlers.py中:

for dependency in DEPENDENCIES:
    if not quickinstaller.isProductInstalled(dependency):
        quickinstaller.installProduct(dependency)

现在，我在portal_quickinstaller的内容"选项卡中有一个 bbbbbbbbbbbb 条目. (http://localhost:8080/Plone/portal_quickinstaller/manage_main).

And now I have a bbbbbbbbbbbb entry in my portal_quickinstaller's Contents tab. (http://localhost:8080/Plone/portal_quickinstaller/manage_main).

如果不存在依赖项，我应该怎么做才能使依赖项部分抱怨"(引发异常，无论如何)?谢谢！

What should I do to make the dependencies section 'complain' (raise an exception, whatever) if the dependency doesn't exist? Thanks!

编辑:我发现了使用quickinstaller.getProductVersion的骇客:如果什么都没有，那就不存在.还有另一种方法吗?

EDIT: I've found a hack using quickinstaller.getProductVersion: if nothing comes, it doesn't exist. Is there another way?

推荐答案

您可以使用以下内容:

def install_dependencies(site):
    """Install required products"""

    qi = getToolByName(site, 'portal_quickinstaller')
    for product in DEPENDENCIES:
        if not qi.isProductInstalled(product):
            if qi.isProductInstallable(product):
                qi.installProduct(product)
            else:
                raise "Product %s not installable" % product

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