Rails,MongoMapper以HAML形式嵌套Array的麻烦 [英] Rails, MongoMapper nested Array in HAML form trouble
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问题描述
我要
#(参考ln#18)的未定义方法胡萝卜"
undefined method `Carrots' for # (referencing ln#18)
当尝试使用以下格式进行编辑时:
When trying to edit with the below form:
= 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 } ] }
我已经尝试过有关MongoMapper,Rails和嵌入式文档的有关Stack Overflow的问题,但是我没有任何运气,也许是因为这是嵌套数组而不是EmbeddedDocument.我尚未使用Formtastic或任何东西,只是想首先了解这里所需的语法.
I've tried related Stack Overflow questions for MongoMapper, Rails and Embedded documents but I am not having any luck, perhaps due to this being a nested Array rather than EmbeddedDocument. I'm not using Formtastic or anything yet, would just like to understand the syntax required here first.
推荐答案
这绝对没有效率,但这使我可以完成工作:
This is definitely not efficient, but this allowed me to get the job done:
= 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
- x = 0
- @harvest.harvested_crops.each do |harvested_crop|
= f.fields_for "harvested_crops[]", harvested_crop do |hc|
%b Harvested Crop
%select{:name => "harvest[harvested_crops][" + x.to_s + "][crop]"}
- Crop.all.collect.each do |crop_name|
- if harvested_crop['crop'] == crop_name[:name]
%option{:selected => "selected", :value => crop_name[:name]}
= crop_name[:name]
- else
%option{:value => crop_name[:name]}
= crop_name[:name]
%b Amount
%input{:name => "harvest[harvested_crops][" + x.to_s + "][amount]", :value => harvested_crop['amount']}/
%br
- x += 1
%br
.actions
= f.submit 'Save'
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