将原型新闻项迁移到敏捷内容类型 [英] Migrating Archetype news items to Dexterity content types

问题描述

我正在尝试将新闻项目中的内容复制到我编写的其他内容类型中.在我的脚本中，我有news项目和project项目.第二个project是使用敏捷定义的内容类型.如果能以另一种方式将图像和正文文本从news复制到project，那就太好了.

I'm trying to copy the content in news items to other content type that I wrote. In my script I have the news item and the project item. The second, project, is a content type defined using Dexterity. It would be wonderful if I could to copy the image and the body text from news to project in the next way.

project.text = news.text
project.image = news.image

在project模式中将文本和图像定义为RichText和NamedBlobImage的位置.我不知道新闻项中的属性.我只知道我可以使用方法getImage()在新闻项中获取图像，但是将其分配给项目会在渲染项目时产生错误.

Where text and image are defined in the project schema as RichText and NamedBlobImage. I don't know how the attributes are in the news item. I only know that I can get the image in the news item using the method getImage() but assign it to the project generates an error when rendering the project.

所以我需要一些指针来解决我的基本问题:

So I need some pointers to solve my basic questions:

1. 我如何知道原型内容类型的属性名称.例如，在这种情况下，我需要知道新闻项目正文的属性名称.

1. How can I know the attribute names for Archetype content types. For example, in this case I need to know the name of the attribute for the body text of news item.

如何将新闻中附加的图像转换为灵巧内容类型的图像.

How can I convert an image attached to a news item to an image attached to a dexterity content type.

推荐答案

1. 您可以使用原型"架构中的字段来检索值，在这种情况下，最好是原始值.您传入对象，然后调用.get()或.getRaw():

schema = news.Schema()
news = schema.getField('text').getRaw(news)
imageField = schema.getField('image')
image = imageField.getRaw(news)
content_type = imageField.getContentType(news)
filename = imageField.getFilename(news)

ImageField.getRaw()调用返回的对象基本上是一个OFS.Image实例.您可以调用str()来获取原始图像数据.

The object returned by the ImageField.getRaw() call is basically a OFS.Image instance. You can call str() on it to get the raw image data.

要设置图像对象，您真的想从架构中获取图像字段并将其._type属性用作工厂:

To set the image object, you really want to get the image field from the schema and use it's ._type attribute as a factory:

project.image = IProjectInterface.image._type(str(image),
    contentType=content_type, filename=filename)

这里的内容类型是可选的； NamedImage和NamedBlobImage类型也会自动嗅出内容类型.

The content type here is optional; the NamedImage and NamedBlobImage types sniff out the content type automatically too.

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