Module: DatatableDecorator

Extended by:
ActiveSupport::Concern
Defined in:
app/controllers/concerns/datatable_decorator.rb

Instance Method Summary collapse

Instance Method Details

#decode_datatable_params ⇒ Object 



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# File 'app/controllers/concerns/datatable_decorator.rb', line 6

def decode_datatable_params
  row_start = params['start'].to_i
  rows_per_page = params['length'].to_i
  search_text = params['search']['value']

  # Convert hashed arrays into array
  columns = []
  params['columns'].each do |k, v|
    if v['data'].is_a? ActionController::Parameters
      v['data'].each do |kk, vv|
        v['name'] = v['data']['_'] if v['name'].blank?
        v[kk] = vv
      end
    else
      v['name'] = v['data'] if v['name'].blank?
    end
    columns[k.to_i] = v
  end

  order_columns = []
  include_columns = []
  order_expressions = []
  params['order'].each do |k, v|
    col = columns[v['column'].to_i]
    sort_params = col['sort']

    if sort_params.present?
      if sort_params.is_a? ActionController::Parameters
        order_expressions << "#{sort_params['model'].pluralize}.#{sort_params['column']} #{v['dir']}"
        include_columns << sort_params['model'].pluralize
      else
        order_expressions << "#{sort_params} #{v['dir']}"
      end
    else
      order_expressions << "#{col['name']} #{v['dir']}"
    end
    order_columns[k.to_i] = v
  end

  # Now let's rock it and do the processing
  {
    per_page: rows_per_page,
    page: row_start / rows_per_page + 1,
    columns: columns,
    order_columns: order_columns,
    sort_statement: order_expressions.join(','),
    search_text: search_text,
    include_columns: include_columns
  }
end

#json_failed_response(msg, errors = nil, template = nil) ⇒ Object

用JSON做一个表示操作失败的Response

Parameters:

msg

需要显示的错误信息

errors

错误对象



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# File 'app/controllers/concerns/datatable_decorator.rb', line 81

def json_failed_response(msg, errors = nil, template = nil)
  @code = 500
  @message = msg
  @errors = errors
  template ||= 'common/api'
  render template, layout: 'json_with_meta', status: 400
end

#json_success_response(options = {}) ⇒ Object

用JSON做一个表示操作成功的Response

Parameters:

options

选项

Options:

在缺省情况下，调用这个函数给一个空的hash也可以，我会自动给回200为response code，错误信息和对象都为空，但是如果需要的，也可以传入一个带哈希作为选项，主要支持：

msg

需要显示的信息，缺省为空字符串

template

需要使用的JSON模板，缺省为common/api



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# File 'app/controllers/concerns/datatable_decorator.rb', line 67

def json_success_response(options = {})
  template = options.delete(:template) || 'common/api'
  msg = options.delete(:msg) || ''
  @code = 200
  @message = msg
  @errors = nil
  render template, layout: 'json_with_meta'
end

#response_after_save_json(result, obj) ⇒ Object 



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# File 'app/controllers/concerns/datatable_decorator.rb', line 89

def response_after_save_json(result, obj)
  if result
    json_success_response
  else
    json_failed_response(view_context.tv('message_save_failed_with_msg', msg: obj.errors.full_messages), obj.errors)
  end
end