Partial template name without Ruby identifier Rails 5
July 14, 2016
This blog is part of our Rails 5 series.
Before Rails 5, partials name should start with underscore and should be followed by any combination of letters, numbers and underscores.
This rule was required because before
commit,
rendering a partial without giving :object or :collection used to generate a
local variable with the partial name by default and a variable name in ruby
can't have dash and other things like that.
In the following case we have a file named _order-details.html.erb. Now let's
try to use this partial.
<!DOCTYPE html>
<html>
<body>
<%= render :partial => 'order-details' %>
</body>
</html>
We will get following error, if we try to render above view in Rails 4.x.
ActionView::Template::Error (The partial name (order-details) is not a valid Ruby identifier;
make sure your partial name starts with underscore,
and is followed by any combination of letters, numbers and underscores.):
2: <html>
3: <body>
4: Following code is rendered through partial named \_order-details.erb
5: <%= render :partial => 'order-details' %>
6: </body>
7: </html>
In the above the code failed because the partial name has a dash which is not a valid ruby variable name.
In Rails 5, we can give our partials any name which starts with underscore.
If this blog was helpful, check out our full blog archive.