Adding Express Validator

[Radagaisus]

Hey,

I'm thinking about adding Express Validator to Zappa. I wrote a blog post about the sugar I'm using to make it nice.

Adding it straight into zappa will make two functions available @assert and @sanitize. I can also add support for socket.io.

Any thoughts on how the API should look like?

@get '/health', ->
  @on_error = @next # This is the error handler,
                                   # if asserting goes wrong, next()
                                   # is the default express error handler,
                                   # and @on_error should be equal to
                                   # next by default
  @pre =>
    @assert('param', 'Invalid Param').notEmpty()
  , =>
    # Validation Passed
    @response.json
      pid: process.pid
      memory: process.memoryUsage()
      uptime: process.uptime()

Also: the github fork this project link in Zappa's website is broken, and leads to the wrong repo.

[shimaore]

It should be possible to make it into your own zappajs plugin and publish it.

require('zappajs') ->
  @include require('zappajs-validator')

Plugin would look something like:

# zappajs-validator
@include = ->
  @use 'express-validator'
  @helper pre: (fn) ->
      error_handler = fn()
      errors = @req.validationErrors()
      if errors then error_handler(errors)
      else @next()

Unless I'm missing a piece where this needs to deal with Zappa internals?