Django Book 翻译
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For example, lets walk through what wed do if we added a ``num_pages`` field to the ``Book`` model described earlier in this chapter. First, wed alter the model in our development environment to look like this:
翻译:
例如,让我们通过给 ``Book`` 模型添加一个 ``num_pages`` 字段来演示一下。 首先,我们在开发环境中这样修改模型:
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