Rails 3.2.3
My need is populating a database using an easiest way.
So I created a model
rails g model MyModelName title:string, another_title:string, description:text
Now I'm trying to populate a database some data using irb
mm = MyModelName.create :title =>'title1', :another_title=>'fdfds', :description =>'desc1 fdsfds'
But here is an error
NameError: uninitialized constant MyModelName
from (irb):4
from /home/alex/.rvm/rubies/ruby-1.9.3-p194/bin/irb:16:in `<main>'
How do I solve it?
Have you run rake db:migrate yet?
Are you using rails console?
Related
I have just added devise to my shiny new Rails 5 app. All's good and dandy until I try to add a username to the Devise user model. Everything worked until I ran it and went to localhost:3000/users/sign_up, where I was greeted by this error:
undefined method `for' for #<Devise::ParameterSanitizer:0x007fa0dc31c1b0> Did you mean? fork
I have searched the wonderful place of Google for any results, only being given outdated, Rails 4 errors and solutions, the same with searching Stack Overflow itself. I cannot get my mind to find a working solution. I would appreciate help very much. Here is how I prepared for this:
Create the migration: rails generate migration add_username_to_users username:string:uniq
Migrate the database rake db:migrate
Add strong parameters to the application controller devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(..) }
Add username parameters to the Devise views
Restart the server
Is there anything I missed or did wrong?
The .for method is deprecated, from devise 4.1+ .permit method is available
Try .permit. It should work.
devise_parameter_sanitizer.permit(:my_action) { |u| u.permit(..) }
Hope this will help you :)
The problem was well mentioned by #Shadow but this syntax worked for me:
def configure_permitted_parameters
devise_parameter_sanitizer.permit(:sign_up, keys: [:first_name, :last_name, :email])
devise_parameter_sanitizer.permit(:account_update, keys: [:first_name, :last_name, :phone, :email, bank_attributes:
[:bank_name, :bank_account]])
end
I am trying to create a Student record in a test, like this:
student= Student.create!(:work_phone => "1234567890")
but I get this error:
ActiveRecord::UnknownAttributeError: unknown attribute: work_phone
However, work_phone is defined in the Student model, and migrated.
Here is the Studentmodel:
class Student < ActiveRecord::Base
validates_length_of :work_phone, :is => 10, :message => 'must be 10 digits, excluding special characters such as spaces and dashes. No extension or country code allowed.', :if => Proc.new{|o| !o.work_phone.blank?}
attr_accessible:work_phone
end
Any idea?
Are you getting this error only in your test environment. More specifically, when you run tests using
rake spec
This could be happening becase you have not run your migrations on your test environments.
You can either do,
rake db:migrate RAILS_ENV=test
or after having having run migrations on your development like below.
rake db:migrate
rake db:test:prepare
Only adding attr_accessor:work_phone to model also works.
I have both ActiveRecord (MySQL) and Mongoid in my Rails 3.1 application. Everything is fine, excepts all generators uses mongoid to generate models. This way, when i:
rails g model user
i receive mongoid-like model, but i need ActiveRecord structure and migrations.
How can i switch back to AR?
Mongoid overrides the model generator, but you can switch it back.
In config/application.rb you can either add a line if you've already got a block similar to this:
config.generators do |g|
g.template_engine :haml
...
g.orm :active_record
end
Or just simply add the entire config line directly to the file
config.generators.orm :active_record
You can also pass :migrations => false if you want to turn off migrations
I am using the rails3-amf gem by warhammerkid in my Rails 3 / Flex 4 project.
AFAIK, I have correctly followed the "Getting Started" instructions from the GitHub page.
I have added the gem lines to my Gemfile.
I have installed the gems using bundle install.
From my Flex application, I will be making the RemoteObject call to the index action in the ManageMySchool::GradesController file. This is the code in the app/controllers/manage_my_school/grades_controller.rb file:
class ManageMySchool::GradesController < ApplicationController
respond_to :html, :amf
def index
#grade = Grade.first
respond_with(#grade) do |format|
format.amf { render :amf => #grade.to_amf }
end
end
end
The name of the model which is to be serialized is called Grade in both the Rails project (app/models/Grade.rb) and the Flex project (Grade.as with a RemoteAlias set as Grade). In the config/application.rb file, I have done the class mapping this way:
config.rails3amf.class_mapping do |m|
m.map :as => 'Grade', :ruby => 'Grade'
end
And I have done a parameter mapping this way:
config.rails3amf.map_params :controller => 'ManageMySchool::GradesController', :action => 'index', :params => [:authenticity_token]
Problem
Now, when I run the server and make the RemoteObject call from Flex, I get a to_amf undefined method error for the Grade model.
If I change Grade.first to Grade.all, #grade would have an array of Grades. But the undefined method error message still mentions the Grade model. This means that the to_amf method is working for the Array class but not for the ActiveRecord model.
Why is this? What am I doing wrong?
Is there something I have to do to "enable" the rails3-amf gem for ActiveRecord models?
I would appreciate any insights. Thanks!
Update
#warhammerkid: Here is the output of Grade.ancestors as seen in rails console.
ree-1.8.7-2011.03 :006 > puts Grade.ancestors
Grade
ActiveRecord::Base
Paperclip::CallbackCompatability::Rails3::Running
Paperclip::CallbackCompatability::Rails3
Paperclip::Glue CanCan::ModelAdditions
Authlogic::ActsAsAuthentic::ValidationsScope
Authlogic::ActsAsAuthentic::SingleAccessToken
Authlogic::ActsAsAuthentic::SessionMaintenance
Authlogic::ActsAsAuthentic::RestfulAuthentication::InstanceMethods
Authlogic::ActsAsAuthentic::RestfulAuthentication
Authlogic::ActsAsAuthentic::PersistenceToken
Authlogic::ActsAsAuthentic::PerishableToken
Authlogic::ActsAsAuthentic::Password
Authlogic::ActsAsAuthentic::MagicColumns
Authlogic::ActsAsAuthentic::Login
Authlogic::ActsAsAuthentic::LoggedInStatus
Authlogic::ActsAsAuthentic::Email
Authlogic::ActsAsAuthentic::Base
ActiveRecord::Aggregations
ActiveRecord::Transactions
ActiveRecord::Reflection
ActiveRecord::Serialization
ActiveModel::Serializers::Xml
ActiveModel::Serializers::JSON
ActiveModel::Serialization
ActiveRecord::AutosaveAssociation
ActiveRecord::NestedAttributes
ActiveRecord::Associations
ActiveRecord::AssociationPreload
ActiveRecord::NamedScope
ActiveModel::Validations::Callbacks
ActiveRecord::Callbacks
ActiveModel::Observing
ActiveRecord::Timestamp
ActiveModel::MassAssignmentSecurity
ActiveRecord::AttributeMethods::Dirty
ActiveModel::Dirty
ActiveRecord::AttributeMethods::TimeZoneConversion
ActiveRecord::AttributeMethods::PrimaryKey
ActiveRecord::AttributeMethods::Read
ActiveRecord::AttributeMethods::Write
ActiveRecord::AttributeMethods::BeforeTypeCast
#<Module:0x1028356f0> ActiveRecord::AttributeMethods::Query
ActiveRecord::AttributeMethods
ActiveModel::AttributeMethods
ActiveRecord::Locking::Optimistic
ActiveRecord::Locking::Pessimistic
ActiveRecord::Validations
ActiveModel::Validations::HelperMethods
ActiveModel::Validations
ActiveSupport::Callbacks
ActiveModel::Conversion
ActiveRecord::Persistence Object
PP::ObjectMixin Base64::Deprecated
Base64
ActiveSupport::Dependencies::Loadable
Kernel
Note that only ActiveModel::Serialization is there. No mention of Rails3AMF.
Does this mean I have to do something special to load the Rails3AMF module for the ActiveRecord models?
I am using Rails 3.0.5 with the latest version of ree. The gems are all contained in a gemset managed using rvm.
Update 2
If I remove the to_amf in the render :amf line, then I get the following error:
Grade Load (0.3ms) SELECT `grades`.* FROM `grades` LIMIT 1
Completed 200 OK in 195ms (Views: 0.1ms | ActiveRecord: 0.8ms)
Sending back AMF
NoMethodError (You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.last):
Rendered /Users/anjan/.rvm/gems/ree-1.8.7-2011.03#rb/gems/actionpack-3.0.5/lib/> > action_dispatch/middleware/templates/rescues/_trace.erb (1.1ms)
Rendered /Users/anjan/.rvm/gems/ree-1.8.7-2011.03#rb/gems/actionpack-3.0.5/lib/> > action_dispatch/middleware/templates/rescues/_request_and_response.erb (2.8ms)
Rendered /Users/anjan/.rvm/gems/ree-1.8.7-2011.03#rb/gems/actionpack-3.0.5/lib/> > action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (13.6ms)
Started POST "/amf" for 127.0.0.1 at Fri Apr 15 17:03:34 +0530 2011
Sending back AMF
Update 3
If I manually add the line include Rails3AMF::Serialization at the top of the Grade.rb model file, then it all works. So, does this mean that I have to put this line in all my models?
I see that this is already being done in line numbers 40 - 42 in the lib/rails3-amf/serialization.rb file of the gem:
# Hook into any object that includes ActiveModel::Serialization
module ActiveModel::Serialization
include Rails3AMF::Serialization
end
Why isn't this working? Should I force-load the gem when my application initializes or something?
Thanks!
Update 4 - Solved by this workaround
Okay, I just ended up adding this code block in an initializer:
class ActiveRecord::Base
include Rails3AMF::Serialization
end
And it is working.
#warhammerkid - Thanks for the help.
Rails3AMF::Serialization, the module that adds the to_amf method, is included in ActiveModel::Serialization when Rails3-AMF loads. If it's somehow not being included even though the code is running and ActiveModel::Serialization is one of your model's ancestors, then the simplest solution is just to add "include Rails3AMF::Serialization" at the top of your model implementation. I've never tried gem sets before, but it might be an issue with them, as everything works correctly using Bundler.
As an aside, feel free to post a bug to https://github.com/warhammerkid/rails3-amf/issues.
e.g. I have a model Student:
class Student < ActiveRecord::Base
def self.do_something
ss=Student.find_by_sex "m"
ss.each do |s|
s.blah
s.save
end
end
end
I can do this:
$ rails c
Loading development environment (Rails 3.0.4)
ruby-1.9.2-p180 :001 > Student.do_something
Now, I want a cronjob for this, How do I run above command without (rails c), so I can:
$ ruby student.rb
And get the same result? (I have gems: "mechanize", "hpricot", "to_lang" used in this model)
Thanks!
Maybe you should take look at gem whenever. If you don't want to use it, you shoud try to use rails runner:
/great/path/to/my/application/script/rails runner "Student.do_something"