how the form validation in rubyonrails and how to retrieve the image
from database and how to upload the image in rubyon rails
Sathiya wrote:
how the form validation in rubyonrails and how to retrieve the image
from database and how to upload the image in rubyon rails
through model u can validate.using moel valaidations
ex:validates_presence_of :name,:message=>“Required fields cannot be left
blank”
upload file by using in html
<%= file_column_field “manufacturer_document”, “document”
,:class=>‘txt_box_sall’%>
manufacturer_document ---- it denotes model name
document ------ denotes field name in db
in controller the code is
@manufacturer_document =
ManufacturerDocument.new(params[:manufacturer_document])
@manufacturer_document.save
now your doubt clears!