Feb 10
Soon the rest of this blog will deal with a basic overview of has_many associations and a practical use. For now look at this simple tag that uses has_many of a Blog model to show the Interests (or topics) for a given blog. You would use this helper_tag like so in your view, given that you have a single instance of a blog object called ‘blog’
<%= more_ugly_interests_tag(blog) %>
I hope this small article might help others:
#########################################
#Tag to show usage of has_many for a model.
#Ruby on Rails
#*this_model* is the actual instance of a blog or photo
#which has a list of interests.
#
#Call tag like this:
# <%= more_ugly_interests_tag(blog) %>
#the syntax below uses what Ruby calls a 'block'
#this is the format:
# some_variable_that_has_a_list.each { |list_item
# #do something with each item
# puts list_item + " !!!!"
# }
#########################################
def more_ugly_interests_tag(this_model)
to_return = "INTERESTS"
this_model.interests.each { |each_interest|
to_return = << each_interest << "
"
}
#now we have end the whole function/method with what we want to return/print
to_return
end
