Ruby on rails Rails设置了在简单表单关联中使用的范围

我有一个表单，我想将新发票与具有外部类型（类型中的布尔字段称为内部）的工单关联（工单属于类型）

这是我想使用的代码：

<%= f.association :workorder, :collection => Workorder.external, :label_method => :wonum_desc, :label => 'Work Order' %>

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谢谢你的帮助

必须包括类型模型，然后在类型表的内部字段中添加条件：

scope :external, includes(:type).where(types: { internal: false })
# notice the syntax:       ^^^^        ^^^^^
# in includes/joins, use the relation's name (here, Workoder belongs_to :type)
# in where, use the table's name (usually the pluralized version of the relation)

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谢谢你的回答！

scope :external, includes(:type).where(types: { internal: false })
# notice the syntax:       ^^^^        ^^^^^
# in includes/joins, use the relation's name (here, Workoder belongs_to :type)
# in where, use the table's name (usually the pluralized version of the relation)