How to generate CSV files in Rails
Controller code :
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your view will look like
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how can we apply validation to image uploading file…
Hello Mr. verma
What type of validation you want ?
for type use
validates_format_of :picture, :with => %r{\.(gif|jpg|png)$}i,
:message => “must be a URL for a GIF, JPG, or PNG image”
for size use
validates_size_of :picture, :maximum =>
If your problem is somthing else, let me know the problem
or you can use file_column plugin
hai satish, thank for your fast replay
i am using file_column plugin in my application, for uploading image file to database.when i am uploading the image file to database without any imagepath(i.e empty ) in the upload field its getting error as:
undefined method `read’ for “”:String
i want to display the validation message rather than displaying the error message, for my application.so what type of validations i have to apply to my image uploading please can u suggest any thing more….
dear
file_column did not store file in database , it store its name only
use
{:controller=>”controller_name”, :action=>”action_name”}, :html => { :multipart => true } do |f| -%>
look at html options include :multipart=>true
hope this will definitely solve your problem