Class: Lazer::ScopesController

Inherits:
ApplicationController show all
Defined in:
app/controllers/lazer/scopes_controller.rb

Instance Method Summary collapse

Methods inherited from ApplicationController

#authenticate!

Instance Method Details

#get_scopes_for_model(model) ⇒ Object 



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# File 'app/controllers/lazer/scopes_controller.rb', line 38

def get_scopes_for_model(model)
  return nil unless model.respond_to?(:defined_scopes)

  result = {}
  all_sql = model.all.to_sql
  model.defined_scopes.each do |name, block|
    begin

      # for each scope, check the arity. don't handle params for now
      if block.respond_to?(:arity) && block.arity != 0
        puts "skipped #{name} because arity was #{block.arity}"
        next
      end

      scope_sql = model.send(name).to_sql

      # return scopes that have a where or order only... skip joins for now
      if !scope_sql.include?(all_sql)
        puts "skipped #{name} because sql wasn't included"
        next
      end

      new_sql = scope_sql.gsub(all_sql, "")&.strip
      result[name] = new_sql
    rescue => e
      Rails.logger.warn "Failed processing scope #{name} on #{model.name}: #{e.message}"
    end
  end

  result
end

#show ⇒ Object 



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# File 'app/controllers/lazer/scopes_controller.rb', line 6

def show
  render json: try_all_models.to_json
end

#try_all_models ⇒ Object 



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# File 'app/controllers/lazer/scopes_controller.rb', line 10

def try_all_models
  Rails.application.eager_load!
  models = ActiveRecord::Base.descendants
  worked = []
  failed = []
  data = {}

  models.each do |model|
    begin
      scopes = get_scopes_for_model(model)
      if scopes.present?
        data[model.name] = {
          scopes: scopes,
          table_name: model.table_name
        }
      end
      worked << (model.respond_to?(:class_name) ? model.class_name : model.name)
    rescue => e
      failed << {
        model: (model.respond_to?(:class_name) ? model.class_name : model.name),
        error: e.message
      }
    end
  end

  { success: worked, failure: failed, data: data }
end