ruby-ext-js

Provides ultra-basic classes for translating Ext.js GET params to Postgres (via Datamapper) and MongoDB (via Mongood) query opts with sensible default limits.

Examples:

MongoDB

class PullRequests < ExtJs::Mongo
  def self.allowed_filters
    ["state"]
  end
end

mongo = PullRequests.new( params )
mongo.conditions # search conditions
mongo.options # pagination and sorting options

Postgres

(Implementation and API will change significantly in the future, don't use this yet.)

module ExtJs
  class PullRequests < Postgres
    # Converts Ext.js' wacky params structure into a Postgres db query opts
    # hash. Supports filtering by PullRequests.state only
    def self.db_opts(params, opts = {})
      params[:dir] ||= "DESC" # Default to descending order

      db_opts = self.pagination_opts( params, {
        :max_offset => 5000, # Optional, prevent Postgres from shitting its pants
        :max_limit => 100
      }.merge( opts ))

      # Filters (the Ext filters hash is not pretty)
      filters = {}
      if params[:filter] && params[:filter]["0"] && params[:filter]["0"][:data]
        filters = case params[:filter]["0"][:data][:value]
          when "Rejected":   { :rejected => true }
          when "Approved":   { :rejected => false }
          when "Unreviewed": { :reviewed => nil }
        end
      end

      db_opts.merge filters
    end
  end
end

Specs

ExtJs was extracted from private code. Existing specs rely on private models, so there are no specs here yet. Specs will require DataMapper.

Contributing

Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
Fork the project
Start a feature/bugfix branch
Commit and push until you are happy with your contribution
Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Version history

Version number conventions: Patch-level bumps for bug fixes, minor-level bumps for changes that break backwards-compatibility, major-level bumps for major new features.

0.3.3

Fix timezone offset math for ExtJs::Mongo date range filters.

0.3.2

Respect local time offset for ExtJs::Mongo date range filters.

0.3.1

Use Time.utc instead of Date for ExtJs::Mongo date range filters.

0.3.0

ExtJs::Mongo now supports 'date' filter params with "gt" and "lt" params.

0.2.1

ExtJs::Mongo.options fixes.

0.2.0

ExtJs::Mongo.conditions now returns a hash with string keys only instead of mixed string / symbol keys for better consistency with the MongoDB Ruby driver