Unlock ReadOnly Model Object

Phasing some interesting problem after creating record for model which has HasMany relationship.

I have class say 'Category' & 'CategoryOptions'.

Category Has Many CategoryOptions

When i create record for CategoryOption using below syntax it locks the newly created object.

category = Category.first

category_option = category.category_options.create(params[:category_option])

If i do 

category_option.readonly?

=> true

Now i'm trying to update category_option using

category_option.update_attributes(params[:category_option])

but it raises Exception like 

ActiveRecord::ReadOnlyRecord

To remove readonly lock from object use below method

category_option.send(:instance_variable_set, :@readonly, false)

Now try

category_option.readonly?

=> false

category_option.update_attributes(params[:category_option]) works perfectly.

Hope this article will help you to remove Readonly lock from Model Object.

Install WKHTMLTOPDF

Hello Guys,

        Here i'm providing steps to install Wkhtmltopdf.

1. Download WKHTMLTOPDF source from http://wkhtmltopdf.org/downloads.html

2. Dobule click on downloaded source.

3. Go to terminal and type : which wkhtmltopdf. That gives you path like below.   /usr/local/bin/wkhtmltopdf4. wkhtmltopdf --version : gives you version no of installed wkhtmltopdf.