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I have a model with attibutes name, title, description ect. If the name is by example weather-foracast I want to show an extra html element
= high_chart("my_id", @chart)
in the show template, wich generates a nice chart. When the page is not weather-foracast i don’t want to show the chart.
What is the best approach? Conditions in the view?
Your problem looks really close to the Exhibit Pattern presented in Object on Rails.
Simply explained, the solution proposed is to wrap your model in a decorator (or multiple decorators) chosen using the state of your model (in your case the name of the record).
I cannot explain it as well as it is explained in the book but that Pattern is so useful that Avdi Grimm made a gem out of it : https://github.com/objects-on-rails/display-case