Add to your project using your Bundler Gemfile:
gem 'seo_meta'
Include in your model by calling the method is_seo_meta in the class declaration,
for example with Page:
class Page < ActiveRecord::Base
is_seo_meta
end
Run the generator:
rails generate seo_meta
Migrate the database (unless you want to read 'Migrating existing data' below first):
rake db:migrate
This step is only if you already implemented SEO meta tag fields in your model.
At this point you could add to the migration that is generated in db/migrate/
logic to migrate across your existing data and remove the columns from your model
afterward, for example with Page:
class CreateSeoMeta < ActiveRecord::Migration
def self.up
# ... migration logic from the seo_meta generator ...
# Grab the attributes of the records that currently exist
existing_pages = ::Page.all.map(&:attributes)
# Remove columns
::SeoMeta.attributes.each do |field|
if ::Page.column_names.map(&:to_sym).include?(field)
remove_column ::Page.table_name, field
end
end
# Reset column information because otherwise the old columns will still exist.
::Page.reset_column_information
# Re-attach seo_meta
::Page.module_eval do
is_seo_meta
end
# Migrate data
existing_pages.each do |page|
::Page.find(page['id']).update_attributes({
::SeoMeta.attributes.keys.inject({}) {|attributes, name|
attributes.merge(name => translation[name.to_s])
}
})
end
end
def self.down
# Grab the attributes of the records that currently exist
existing_pages = ::Page.all.map(&:attributes)
# Add columns back to your model
::SeoMeta.attributes.each do |field, field_type|
unless ::Page.column_names.map(&:to_sym).include?(field)
add_column ::Page.table_name, field, field_type
end
end
# Reset column information because otherwise the new columns won't exist yet.
::Page.reset_column_information
# Migrate data
existing_pages.each do |page|
::Page.find(page['id']).update_attributes({
::SeoMeta.attributes.keys.inject({}) {|attributes, name|
attributes.merge(name => translation[name.to_s])
}
})
end
# ... migration logic from the seo_meta generator ...
end
end
Now, run:
rake db:migrate
You can use the included partial if you want a ready made form for the new SEO fields.
Note that the :form local variable is required and should be a form builder object
from a form_for block, for example:
<%= form_for @page do |f| -%>
<%= render :partial => '/seo_meta/form', :locals => { :form => f } %>
<% end %>
Nope, all done!
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