I think you want this format: select(“model_name”, “model_id”, Model.all.collect {|mt| [ mt.name, mt.id ] }, {:include_blank => ‘name of your blank prompt’}) BTW: was assuming Modle was suppose to be Model. To use using collection_select: collection_select(:model, :model_id, Model.all, :id, :name, :prompt => true)
require ‘erb’ require ‘ostruct’ def render(template, vars) ERB.new(template).result(OpenStruct.new(vars).instance_eval { binding }) end e.g render(“Hey, <%= first_name %> <%= last_name %>”, first_name: “James”, last_name: “Moriarty”) # => “Hey, James Moriarty” Update: A simple example without ERB: def render(template, vars) eval template, OpenStruct.new(vars).instance_eval { binding } end e.g. render ‘”Hey, #{first_name} #{last_name}”‘, first_name: “James”, last_name: “Moriarty” # … Read more
Add a second % to the opening tag: label: body: “<%%= variable %>” The <%% sequence is valid ERB, rendered as a literal <%.
Two big advantages of using slim over haml: Slim is currently about eight times faster than haml. Slim supports HTTP streaming, while HAML doesn’t. Slim has a more natural syntax: a href=”https://stackoverflow.com/questions/11390512/foo.html”
Use this for commenting single lines: <%# your_ruby_code %> For multiple lines, the following would work: <% =begin %> <% ruby_code %> <% =end %> What you said would work.
erb stands for “Embedded RuBy”. A .html.erb or .erb.html file is HTML with Ruby code embedded in; Rails will evaluate the Ruby to add content to the file dynamically, and will output a “pure” HTML file for rendering.
Use the <%# %> sequence, e.g. <%# This is a great comment! %>
Considering Rails 3: html_safe actually “sets the string” as HTML Safe (it’s a little more complicated than that, but it’s basically it). This way, you can return HTML Safe strings from helpers or models at will. h can only be used from within a controller or view, since it’s from a helper. It will force … Read more
<% %> Executes the ruby code within the brackets. <%= %> Prints something into erb file. <%== %> Equivalent to <%= raw %>. Prints something verbatim (i.e. w/o escaping) into erb file. (Taken from Ruby on Rails Guides.) <% -%> Avoids line break after expression. <%# %> Comments out code within brackets; not sent to … Read more