So I was wandering if there is an equivalent to <%= in a Ruby on Rails view using <% and %>.
PHP allows the use of <?=$str ?> and <? echo $str ?>, do views in RoR allow something like this? Doing <%= in a large block of Ruby On Rails code in a view isn't very nice to see, not to mention a nuisance when doing something like for loops. Is it possible?
That isn't Ruby On Rails construction, that's construction of ERB template engine. If you like, you can use haml or any other template engine. This is rather old, but interesting review many of them.
You are talking about *.html.erb files. Try something else. For instance, HAML. http://haml-lang.com/
Related
I'm working on a project using Middleman. In one of the pages (videos.html.markdown.erb), I'd like to add partials working with both markdown and Middleman helpers.
<h3><%= video.title %> : Récit de tournage</h3>
<%= partial "partials/shootandlook1" %>
</div>
It works fine except that Markdown is not converting into HTML... :-(
I named my partial _shootandlook1.html.markdown.erb and my page videos.html.markdown.erb.
I really don't understand what I did wrong... Could someone please help me?
The whole source code is here.
Many, many thanks in advance!
This should work fine if you name your page template file videos.html.erb, and name your content partial _shootandlook1.md.
The Markdown file will be processed first, then inserted into the ERB template appropriately.
I usually find that it's best to avoid having multiple template formats in one file, unless the format explicitly supports blocks (like Haml)
What I'm looking for is a gem that could output a complete webpage version of each view a rails app has.
I realize I might not have correctly worded this. What I mean is I would like to see each route that has html output, but what the view actually looks like, not just a line saying what the view is.
In development (rails 4.x) you can simply go to any non-existent page and it will return all of the routes.
Example Screenshot: https://dl.dropboxusercontent.com/u/23115266/Screen%20Shot%202014-02-27%20at%209.21.03%20AM.png
The sextant gem allows you to see all your application's views in development by navigating to the /rails/routes URL.
https://github.com/schneems/sextant
Please correct me if I'm wrong, but it looks like you want a listing of view templates. Not sure there is a gem that can do this, but you could easily do it yourself with the following:
module ShowViewsHelper
def all_views_from_path(path)
helpers = Array(path).flat_map do |_path|
extract = /^#{Regexp.quote(_path.to_s)}\/?(.*)_.erb$/
names = Dir["#{_path}/**/*.erb"].map { |file| file.sub(extract, '\1') }
names.sort!
end
helpers.uniq!
helpers
end
end
create a template somewhere with the following:
<ul>
<% all_views_from_path("app/views").each do |v| %>
<li><%= v %></li>
<% end %>
</ul>
Sinatra has sinatra/contrib to asist with this, what's the equivalent in Ramaze? I'm using Erubis by the way. Also, a quick Google search shows up really old pages that insist setting variables in the controllers and using them in the views.
Edit 1:
Taken from the gem documentation (http://www.sinatrarb.com/contrib/content_for.html)
You call content_for, generally from a view, to capture a block of markup giving it an identifier:
# index.erb
<% content_for :some_key do %>
<chunk of="html">...</chunk>
<% end %>
Then, you call yield_content with that identifier, generally from a layout, to render the captured block:
# layout.erb
<%= yield_content :some_key %>
I don't think Ramaze can do this natively. But you could quite easily do this manually, write a helper to do this, or even fill-in a Hash instance.
You might also want to look at partials if you need to render small chunks of HTML in loops.
You could also combine render_partial, store results in a hash, and yield it's content in the layout.
If the use case is something like rendering a sidebar, you probably want to write a helper so you take the logic out of your views.
A trivial example is here : https://github.com/Ramaze/ramaze/wiki/Adding-a-dynamic-sidebar-in-a-layout
So in my DB I want stored a ruby/HTML statement in the Database Table such as -
p This site is owned from 2000 - #{Time.now.year} by Acme Widget Co. /p
Or let's say that I want people to be able to include in other code snippits - e.g.
A client wants to run in a show view in the middle of a paragraph some magical partial such as #{render 'my_magical_code'}
On the view I have this being rendered as <%= raw(#page.content) %>
But its like a double rendering and rails will just put on the page #{render 'my_magical_code'} or #{Time.now.year}
So can / how do I solve this?
Thanks!
There are work arounds but I think the most proper way to solve your problem is to store your information in a better way. Add a migration to your model with a year_founded and company rows. You can then call these in your views rather than storing the HTML. Eg. This site is owned from <%= #object.year_founded %> to <%= Time.now.year %> by <%= #object.company %>
In PHP, it is possible to do this:
<input type="text" value=" <?php echo "Hello world"; ?> ">
Is it possible to embed Ruby in HTML like that with or without Rails?
You will need to use a templating engine like Ruby Templates (ERB). Here's an example. Rails uses ERB so you could easily do this in each of your templates.
Rails has something called ERB to do just this sort of thing.
Use HAML for HTML templating, otherwise ERB.