Render Me Pretty

Let's say you have an error in your ERB template:

line 1
<%= sdsd %>
line 3

Normally, when render it with ERB you get an error message that looks something like this:

 NameError:
   undefined local variable or method `sdsd' for #<RenderMePretty::Context:0x00007fcda414d358>
 (erb):2:in `get_binding'
 ./lib/render_me_pretty.rb:71:in `render'
 ./spec/lib/render_me_pretty/erb_spec.rb:41:in `block (3 levels) in <top (required)>'

Instead, this library produces an output with an error pointing out the original line in the ERB template like so:

NameError evaluating ERB template on line 2 of: spec/fixtures/invalid.erb
1 line 1
2 <%= sdsd %>
3 line 3

The output also colorizes the error line in red so it stands out.

Here's a simple example:

erb = RenderMePretty::Erb.new("/path/to/tempate.erb", a: 3) }
erb.render(a: 4)

There's also a convenience class method:

RenderMePretty.result("/path/to/tempate.erb", a: 5)

RenderMePretty.result("/path/to/tempate.erb", layout: "/path/to/layout.erb")

person = Person.new("tung")
erb = RenderMePretty::Erb.new("/path/to/tempate.erb", a: 3, context: person) } # passing context here
erb.render(a: 4)

person = Person.new("tung")
erb = RenderMePretty::Erb.new("/path/to/tempate.erb", a: 3) }
erb.render(person, a: 4) # passing context here

The context's methods and instance variables are available in the ERB template. Variables passed at initialization time to RenderMePretty::Erb.new or at call time for render be set as instance variables to a clone of the original context object.

So in the case above, if there was an @a instance variable in the Person object, it will not get respected. Instead the value would be @a = 4.

You can pass in a context object also. Examples:

A few more examples are in the erb_spec.rb

Add this line to your application's Gemfile:

gem 'render_me_pretty'

And then execute:

$ bundle

Please fork the project and open a pull request! I'd love your pull requests. Contributions are encouraged and welcomed!

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request