Im having an issue that seems to only happen when trying to use a transaction. Ive used transactions many times in the past and Im at a loss as to why im getting the stack level too deep problem.
SystemStackError - stack level too deep:
actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:70:in `’
I have a StackOveflow with more detail - http://stackoverflow.com/q/16930511/1408461
As stated in the SO. If I try to save the record to the database outside the transaction it saves just fine. I only get the error in the transaction.
Params Object
params => {
"resource"=> {
"resource_type"=>"document",
"resource_name"=>"My Rails Doc",
"source_id"=>"Dropbox"
},
"resource_document"=> {
"resource_document"=> #<ActionDispatch::Http::UploadedFile:0x007f8e919d06f8
@content_type="text/plain",
@headers= "Content-Disposition: form-data; name=\"resource_document[resource_document]\";
filename=\"rails_local_env_setup.txt\"\r\n
Content-Type: text/plain\r\n",
@original_filename="rails_local_env_setup.txt",
@tempfile= #<File:/var/folders/t4/lfmj7mhj52b2krryzh7dj4hh0000gn/T/RackMultipart20130604-29589-2c0seo>>},
"action"=>"create",
"controller"=>"resources"
}
**Controller**
def create if current_teacher @resource = ResourceObject.create_teacher_resource(params, current_teacher) end
if current_student @resource = ResourceObject.create_student_resource(params, current_student) end
if current_admin @resource = Resource.new(params[:resource]) end
respond_to do |format| if @resource. success format.html { redirect_to @resource, notice: ‘Resource was successfully created.’ } format.json { render json: @resource, status: :created, location: @resource } else format.html { render action: “new” } format.json { render json: @resource.errors, status: :unprocessable_entity } end end end
Transaction
class ResourceObject
def self.create_teacher_resource(params, teacher) begin ActiveRecord::Base.transaction do # Create Resource @resource = Resource. new @resource.resource_name = params[:resource][:resource_name] @resource.resource_type = params[:resource][:resource_type] @resource.source_id = params[:resource][:source_id] @resource.teacher_id = teacher. id @resource. save
Create Resource Document
@resource_document = ResourceDocument. new
@resource_document.resource_document = params[:resource_document][:resource_document] @resource_document.resource_id = @resource. id @resource_document. save
TODO Add Commom Core Joins
# TODO Video Uploader
# TODO Image Uploader
return @resource.success = "ok"
end
rescue Exception => e
TODO Need to figure out how to pass exception message back to controller
return @resource. errors
end end end
end
Resource Model
class Resource < ActiveRecord::Base
include TransactionAttributes
attr_accessible :resource_name, :resource_type, :source_id, :teacher_id, :student_id, :success, :errors
belongs_to :teacher, :class_name => "Teacher", :foreign_key => "teacher_id"
belongs_to :student, :class_name => "Student", :foreign_key => "student_id"
has_many :resource_documents
# has_many :resource_images
# has_many :resource_videos
# has_many :question_resources
# has_many :assignment_resources
end