export_excel/app/controllers/products/products_controller.rb
class ProductsController < ApplicationController
def index
@products = Product.order(:name)
respond_to do |format|
format.html
format.csv { send_data @products.to_csv }
format.xls
end
end
end
export_excel/app/models/product.rb
require 'csv'
class Product < ActiveRecord::Base
def self.to_csv(options = {})
CSV.generate(options) do |csv|
csv << column_names
all.each do |product|
csv << product.attributes.values
end
end
end
end
索引文件位于:
export_excel/app/views/products/index.html.erb
部分在:
export_excel/app/views/products/_product.html.erb
目标是能够单击链接并开始下载保存表中数据库对象的excel或csv文件。
我第一次运行此代码时,它仍然有效,我仍然在我的系统上安装了下载的文件。但是,每次之后我都会遇到这个错误:
Missing template products/index, application/index with {:locale=>[:en], :formats=>[:xls], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder]}. Searched in: * "/Users/Candied_Island/Desktop/CPF/export_excel_tutorial/app/views"
My index.hrml.erb is in the correct place, and I believe my partial is in the correct location as well. Please help if you can, I'm not seeing why I'm getting this error.
此外,如果它有任何帮助,说我的错误发生在这里:
`app / controllers / products_controller.rb:4:'index'
这是代码块
respond_to do |format|
format.html
format.csv { send_data @products.to_csv }
format.xls
end
谢谢!
答案 0 :(得分:1)
Rails正在寻找一个视图,而不是找到一个视图。具体来说,它正在寻找可以呈现的XLS格式视图,因为您没有像~/.ipython/profile_default/startup/10-mystartupstuff.py
那样为xls
格式指定任何特殊操作。
您需要在csv
下设置index.xls[.erb]
视图。
您可以选择使用XLS,因为您已完成CSV:
app/views/products
class Product < ActiveRecord::Base
def self.to_xls
# get xls format data somehow and return it
end
end
答案 1 :(得分:0)
您应该有一个包含.xls.erb
文件的文件,以xls
格式呈现请求。作为您的操作,文件应为index.xls.erb
。
我在此根据RailsCast#362
为您添加一些示例内容 <?xml version="1.0"?>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:html="http://www.w3.org/TR/REC-html40">
<Worksheet ss:Name="Sheet1">
<Table>
<Row>
<Cell><Data ss:Type="String">ID</Data></Cell>
<Cell><Data ss:Type="String">Name</Data></Cell>
<Cell><Data ss:Type="String">Release Date</Data></Cell>
<Cell><Data ss:Type="String">Price</Data></Cell>
</Row>
<% @products.each do |product| %>
<Row>
<Cell><Data ss:Type="Number"><%= product.id %></Data></Cell>
<Cell><Data ss:Type="String"><%= product.name %></Data></Cell>
<Cell><Data ss:Type="String"><%= product.released_on %></Data></Cell>
<Cell><Data ss:Type="Number"><%= product.price %></Data></Cell>
</Row>
<% end %>
</Table>
</Worksheet>
</Workbook>