ruby - Get full path of file_field image in rails -

i trying full path image uploading rails file_field helper.

%h4 upload image .col-sm-8   =label_tag "upload image" .col-sm-4     =form_tag(controller:"images", :html => {:multipart => true})     =select("app", "app", ["#{rails.env}_thing", "#{rails.env}_otherthing"], {include_blank: true})     =file_field :post, :image     %button.btn.btn-primary.btn-block{:type => "submit"}       ="upload image" 

when hits controller action params are:

{"utf8"=>"✓", "authenticity_token"=>"kvf52okmdkqpte/ja99r33213123210wrklc2umhgdm=", "app"=>{"app"=>"development_thing"}, "post"=>{"image"=>"picture.png"}, "html"=>{"multipart"=>"true"}, "action"=>"create", "controller"=>"images"} 

what want though full path of image file. how that? if uploaded desktop "/users/bob/desktop/picture.png"

thanks!

you can't fullpath of file via input type 'file'. browser not allow it. security feature in modern browsers.

in chrome u get

c:\fakepath\filename.ext 

while in mozilla u filename

filename.ext 

you can find lots of other question related this. see

how full path of file file input

full path file input using jquery