Rails Forms With Auto-Hyperlink On FKs
Because I use primary_key_prefix_type = :table_name this did the trick for me. Basically, I just set up a hash mapping primary key column names (“InvoiceID” and the like) to the name of the appropriate controller (“invoice_admin”). When outputting a column, if the name of the column is contained in that hash, output a link. All I had to do was write a script to generate the hash and a template for the show.rhtml and Bob was my uncle…
# Methods added to this helper will be available to all templates in the application.
module ApplicationHelper
#lazy initializer for mapping between the names of FK fields and the appropriate controller
#:return: => nil
def initialize_identity_columns
@identityColumns = {
'InvoiceID' => 'invoice_admin'
# ... etc ...
}
end
#called within show.rhtml (probably) ala
# <% for column in LineItem.content_columns %>
# <%= show_column_with_auto_hyperlink(@line_item, column) %>
#<% end %>
#:return: => String
#:arg: currentObj => ActiveRecord::Base
#:arg: column => ActiveRecord::ConnectionAdapters::Column
def show_column_with_auto_hyperlink(currentObj, column)
if @identityColumns == nil
initialize_identity_columns()
end
html = "<p><b>#{column.human_name}:</b> #{currentObj.send(column.name)} "
optionalLink = nil
if @identityColumns[column.name] != nil
html += link_to("Show", { :controller => @identityColumns[column.name], :action => "show", :id => currentObj.send(column.name) })
end
html += "</p>"
return html
end
end
