我越来越
# 的未定义方法“Carrots”(引用 ln#18)
尝试使用以下表单进行编辑时:
= form_for @harvest do |f|
- if @harvest.errors.any?
#error_explanation
%h2= "#{pluralize(@harvest.errors.count, "error")} prohibited this harvest from being saved:"
%ul
- @harvest.errors.full_messages.each do |msg|
%li= msg
.field
= f.label :created_at
= f.text_field :created_at, :disabled => true
%br
= f.label :photo
= f.text_field :photo
%h2 Crops
- @harvest.harvested_crops.each do |harvested_crop|
= f.label :harvested_crop['crop']
= f.select harvested_crop['crop'], Crop.all.collect {|p| [ p.name, p.id ] }, {:include_blank => ''}
= f.label :harvested_crop['amount']
= f.text_field harvested_crop['amount']
%br
.actions
= f.submit 'Save'
使用以下数据:
{ "_id" : ObjectId("5067846f37bca62bccc3729e"), "user_id" : "5067844637bca62bccc3729c", "photo" : "carrotsnspuds.jpg", "harvested_crops" : [ { "crop" : "Carrots", "amount" : 1112.15 }, { "crop" : "Potatoes", "amount" : 3212.44 } ] }
我已经为 MongoMapper、Rails 和 Embedded 文档尝试了相关的 Stack Overflow 问题,但我没有任何运气,可能是因为这是一个嵌套数组而不是 EmbeddedDocument。我还没有使用 Formtastic 或任何东西,只是想先了解这里所需的语法。