| Rails: rubocop disable Class has too many lines error Posted: 24 Oct 2016 08:11 AM PDT I have a class with constants, many constants. And rubocop is complaining about the length of this Class, which I don't care how long it gets. I want to disable rubocop's error: "Class has too many lines" but the following is not working: # rubocop:disable ClassLength
What is the correct metric that I need to disable? |
| what is the best way to query? Posted: 24 Oct 2016 08:15 AM PDT i am having two models employee and in_outs. the association between these are employee has many in_outs and in_out belongs to employee.i want to display the attendance of all the employees. For this my current logic is this. def view_all_employee_attendance employees = Employee.all @all_employess_punch_in_outs = [] employees.each do |employee| @all_employess_punch_in_outs << employee.in_outs.where('date >= ? and date <= ?', Date.today.at_beginning_of_month, Date.today) end end
and in view : <tbody> <% @all_employess_punch_in_outs.each do |punch_record| %> <tr> <td><%= punch_record.employee.name %></td> <td><%= punch_record.check_in_req %></td> <td><%= punch_record.check_out_req %></td> </tr> <% end %> </tbody>
in this case in my view again queries are executing. how to make this query optimise in view and in action by using eagerloading? |
| remember previous input value in ruby Posted: 24 Oct 2016 08:08 AM PDT I have this sample class below. class MyClass def initialize(options = {}) @input = options[:input] end def trigger # I want to remember previous input value if this method called. input end end
How can I store or remember the previous value that was previously input? For example. my_class = MyClass.new(input: "first") my_class.trigger => first
If I call: my_class.input = "second"
I want to remember the previous value input which is "fisrt". How can I achieve this? |
| Rails with Angular 2 ( for stand-alone web apps)? Posted: 24 Oct 2016 08:12 AM PDT I have been learning rails for over 4-5 months.I would say i am intermediate(ish) on rails.Past week, i got interested in angular2.Since it is written in TypeScript, it was little diffrent for me.Can rails do what angular2 can do? I mean single page app things? Should i invest the time to learn it, or just move along with rails? And if i leave angular2, can i still make single page rails apps? I know this might not be the place for this question, but i haven't got an answer from quora for past 4 days.This question really bothering me mentally and psyhically. It is bothering my mind, and preventing me to learn anything at all.Please help. |
| Assets not rendering in production rails Posted: 24 Oct 2016 08:15 AM PDT I have precompiled the assets in production but the application is not able to load the assets. My app is deployed on AWS EC2 
I checked in the server in public/assets folder the application.css is present.  but still it says 404 error. My production.rb configuration is 
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| relationship between students, teacher , periods and attenance Posted: 24 Oct 2016 08:04 AM PDT i have User model and UserRole (teacher, student and principle) every class has many students and one teacher only and every student has many classes. every class has many period. how can i set attendance for class as every period has it own attendance for each student and how i create relationship between user and class and period and attendance |
| Possible to specify backup configuration in yaml file? Posted: 24 Oct 2016 06:48 AM PDT I'm using the following gem for authenticating with my LDAP server for user authentication... https://github.com/cschiewek/devise_ldap_authenticatable In my configuration file I use the following, but I would like to have it setup so that if the "primary" server is down it would use a secondary server for authenticating. development: host: blt01.sub.domain.net port: 389 attribute: sAMAccountName base: XXX admin_user: XXXX admin_password: XXXX ssl: false
So in the above example I would have the primary: blt01.sub.domain.net and would like to specify a secondary: blt02.sub.domain.net somehow. Just not sure how that would be accomplished. |
| Rails routing all subdomains with wildcard Posted: 24 Oct 2016 07:21 AM PDT I have an existing site with the pattern: CappedIn.com/users/1
I would like my users to also be accessible via MyUsername.CappedIn.com
I would like to be able to catch all subdomains and then perform a quick lookup in a controller and render a user profile. The rendered URL would be of course MyUsername.CappedIn.com Is this possible? How can it be achieved? Note that I am currently on Rails 3.2 but will be migrating to Rails 5. So a Rails 5 solution would be best. |
| Clean implementation for multiple decisions in ruby Posted: 24 Oct 2016 07:15 AM PDT background I'm writing an API that processes data from an external application. My application processes JSON responses from the external application and offers relevant information to consumers of my service. (These consumers are internal to my organisation) The external application has an API that allows me to check for updates. Updates are triggered by events. The API offers 12 different types of events. The event types are offered in a string format. (ex. 'MoveEvent', 'DeleteEvent', 'CreateEvent') I need to write a specific processing algorithm for each event. Problem I'm looking for a clean, DRY and SOLID way to implement the event processing system. The focus for this application is on code quality and a solid architecture. My solution and thoughts There are a number of ways to tackle this issue, but my best guess so far has been: - Create a hash that holds the string name of the event types and map them to a processing class.
- Use the Strategy pattern to define a common interface for all the processing classes to adhere to, so that any mediating class only needs to know the message to which the processing classes can respond.
- Use some sort of factory (method) to instantiate a concrete implementation.
I'm explicitly looking to ignore a long if-elsif-else solution, unless someone can convince me to do otherwise. Suggestions and criticism is always welcome, thanks! |
| Nginx not serving static content over rails Posted: 24 Oct 2016 06:50 AM PDT I want to serve static images with nginx. I have in my nginx.conf location /i/ { alias /home/matt/images/; }
I am going to server.com/i/928675140291b6.jpg Just to see if it will serve the image, But I'm getting in production.log: ActionController::RoutingError (No route matches [GET] "/i/928675140291b6.jpg"):
The response to curl -I server.com/i/928675140291b6.jpg: HTTP/1.1 404 Not Found Server: nginx/1.10.0 (Ubuntu) Date: Mon, 24 Oct 2016 13:49:50 GMT Content-Type: text/html; charset=utf-8 Content-Length: 1564 Connection: keep-alive X-Request-Id: abb0cb6c-e922-4186-b245-e78b21a88919 X-Runtime: 0.007451
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| Rails flash with AJAX request without page refresh Posted: 24 Oct 2016 06:27 AM PDT Im hoping there is a cleaning way of getting flash messages to work in an ajax call using React. Been looking on the web and, honestly, Im sure it can be done without much added code. def my_method [...] flash[:success] = "Yea bouy." if request.xhr? render :json => { :order => true, } end end
I'm not doing a page redirect and was wondering how to get a simple flash to show. Anwers around showing adding more methods. Could I have the flash code within my method? Something like: def my_method [...] if request.xhr? render :json => { :order => true, } end return flash[:success] = "Yea bouy." # Only works when page refreshes. end
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| Why Rails does not add record to table from associations? Posted: 24 Oct 2016 06:05 AM PDT I have 2 model classes: Chocolate and Kind: class Chocolate < ActiveRecord::Base has_many :kinds accepts_nested_attributes_for :kinds
and class Kind < ActiveRecord::Base belongs_to :chocolate
I have the next form: = simple_form_for @chocolate do |ch| = simple_fields_for :kinds, @chocolate.kinds.build(kind: 'Bitter') do |k| = k.input :kind = ch.input :netto = ch.submit
So, when I submit my form, it adds a new record to my chocolates table, but it does not add a record to my kinds table, through associations. In chocolateController I have: private def chocolate_params params.require(:chocolate).permit(:netto, kinds_attributes: [:kind]) end
So, why it does not write to my table with associations? Where have I a mistake? |
| What is the geom and 26918 mean [on hold] Posted: 24 Oct 2016 05:19 AM PDT pic from website I want to use postgis and ST_Dwithin funtions in rails but I don't understand it |
| Celluloid deadlock during rails request Posted: 24 Oct 2016 05:16 AM PDT I have the following controller path that is supposed to upload a file to azure. def do_upload(upload, container_name, path, name, data) Azure.config.storage_account_name = APP_CONFIG['ac_name'] Azure.config.storage_access_key = APP_CONFIG['key'] azure_blob_service = Azure::Blob::BlobService.new begin container = azure_blob_service.get_container_properties(container_name) rescue => error puts error upload.upload_failed = true upload.save render :body => nil, :status => 503 and return end begin azure_blob_service.create_block_blob(container.name, path + name, data, {chunking: true, timeout: 300}) rescue => error puts error upload.upload_failed = true upload.save render :body => nil, :status => 503 and return end upload.number_of_files += 1 unless (params[:type] == 'thumbnail' || params[:type] == 'model') upload.save render json: { :status => 200 } and return end
Im using azure-contrib to upload the chunked file to azure and azure-contrib in turn uses Celluloid. The error I get is: I, [2016-10-24T11:42:15.290622 #65239] INFO -- : Completed 500 Internal Server Error in 93ms (ActiveRecord: 4.7ms) F, [2016-10-24T11:42:15.296640 #65239] FATAL -- : F, [2016-10-24T11:42:15.312435 #65239] FATAL -- : fatal (No live threads left. Deadlock?): F, [2016-10-24T11:42:15.312543 #65239] FATAL -- :
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| Delete object from s3 bucket Rails 5 aws-sdk Posted: 24 Oct 2016 05:18 AM PDT I'm new to RoR. I've configured my webapp to upload objects to s3 using 'aws-sdk' gem. The connection runs ok and the objects are uploaded correctly. However, I struggle to delete those objects from Rails. I get this error: This XML file does not appear to have any style information associated with it. The document tree is shown below. <Error> <Code>MethodNotAllowed</Code> <Message> The specified method is not allowed against this resource. </Message> <Method>POST</Method> <ResourceType>OBJECT</ResourceType>
SONGS_CONTROLLER > class SongsController < ApplicationController def index @songs = Song.all end def create #make an object in your bucket for the upload file_to_upload = params[:file] file_name = params[:file].original_filename bucket = S3.bucket(S3_BUCKET.name) obj = bucket.object(file_name) #byebug #upload the file: obj.put( acl: "public-read", body: file_to_upload ) #create an object for the upload @song = Song.new( url: obj.public_url, name: obj.key ) #save the upload if @song.save redirect_to songs_path, notice: 'File successfully uploaded' else flash.now[:notice] = 'There was an error' render :new end end def delete @song = Song.find(params[:file]) obj = bucket.object(@song.key) obj.delete @song.destroy end end
INDEX.HTML.RB > <% @songs.each do |song| %> <ul> <%= link_to song.name, song.url %> /// <%= link_to 'Delete', song.url + song.name, method: :delete, data: {confirm: 'Do you want to delete this song?'} %> </ul> <% end %>
ROUTES > Rails.application.routes.draw do get 'songs/index' get 'songs/create' get 'songs/delete' root 'songs#index' resources :songs end
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| multi level embeds_many mongoid query Posted: 24 Oct 2016 04:30 AM PDT I have 3 classes, A, B, and C. class A include Mongoid::Document embeds_many :bs class B include Mongoid::Document embeds_many :cs embedded_in :a field :category, type: String class C include Mongoid::Document embedded_in :b field :description, type: String
I want to find all A's such that they have an embedded B with category "cat1" which has an embedded C with description "good" AND that have an embedded B with category "cat2" which has an embedded C with description "great." I can't seem to come up with a query that doesn't find criss-crossed C's (returns A's with embedded B's that have category "cat1" with description "great." What I really want logically is something like this: find all A's that have (an embedded B with category "cat1" and that has an embedded C with description "good") AND (an embedded C with category "cat2" and that has an embedded C with description "great"). By building a compound where query, I can only get a locus with that allows the C's restriction to trigger a hit regardless of whether it's parent B has category "cat1" or "cat2": A.where(:"bs.category" => "cat1"). where(:"bs.cs.description" => "good"). where(:"bs.category" => "cat2"). where(:"bs.cs.description" => "great")
This doesn't do what I'm trying to achieve. What I really want is something like this, but the syntax doesn't seem to exist: A.where((:"bs.category" => "cat1"). where(:"bs.cs.description" => "good")). where((:"bs.category" => "cat2"). where(:"bs.cs.description" => "great"))
The only thing I can get to work is to & two different loci with two different queries, but I need to gang together up to 20 selectors and this is going to get inefficient very quickly. Anyone have any idea how to build this kind of compound query or if it's possible in mongoid? Thanks for any help, Kevin |
| Group by bucket (with NULL values) Posted: 24 Oct 2016 05:17 AM PDT I have the following tables: - entries (id, title, text, duplicate_bucket_id)
- duplicate_buckets (id, comment)
So every entry can be in a duplicate bucket. Now I want to get all entries without the duplicates: SELECT MIN(id) FROM entries GROUP BY duplicate_bucket_id
The problem with this query is that it also groups all the entries without a duplicate_bucket_id to only one entry with NULL. So I need something like this (SELECT MIN(id) FROM entries WHERE duplicate_bucket_id IS NOT NULL GROUP BY duplicate_bucket_id) UNION (SELECT id FROM entries WHERE duplicate_bucket_id IS NULL)
This query gives me the correct result, but ActiveRecord can't use UNIONs. Alternatively, I can use this query with a subquery: SELECT * FROM entries WHERE duplicate_bucket_id IS NULL OR id IN (SELECT MIN(id) FROM entries WHERE duplicate_bucket_id IS NOT NULL GROUP BY duplicate_bucket_id )
In this query, I must place additional where-clauses in AND outside of the subquery. So the query gets quite complicated and I don't know yet, how to use the Ransack Gem with such a query... The query would be simple, if every "entry" would be in a "duplicate_bucket" - buckets of size 1 (I could use *SELECT * FROM entries GROUP BY duplicate_bucket_id*). But I want to avoid to have entries in a duplicate_bucket, if the entry don't have a duplicate. Is there a simple query (no unions, no subqueries) to get all entries without their duplicates? Dataset entries(id, title, text, duplicate_bucket_id) 1, 'My title', 'Bla bla', 1 2, 'Hello', 'Jaha', 1 3, 'Test', 'Bla bla', 1 4, 'Foo', 'Bla', NULL 5, 'Bar1', '', 2 6, 'Bar2', '', 2
duplicate_buckets (id, comment) 1, 'This bucket has 3 entries' 2, 'Bar1 and Bar2 are duplicates!'
Result 1, 'My title', 'Bla bla', 1 4, 'Foo', 'Bla', NULL 5, 'Bar1', '', 2
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| Update of latitude and longitude does not work in active admin Posted: 24 Oct 2016 05:06 AM PDT I am building an app for renting rooms. I am using active admin and the geocoder gem. Now to my issue: I want to update the address of a room in the active admin panel which works perfectly but it will not update the longitude and latitude columns autoamtically for me... and I have no idea why? How can I make this work? I have permited the params in (room.rb - activeadmin) permit_params :longitude, :latitude
I am using also an after_validation in (room.rb - model) geocoded_by :address after_validation :geocode, if: :address_changed?
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| how to get text_filed value in a variable before submit form in rails Posted: 24 Oct 2016 04:12 AM PDT I am new in ruby on rails, Here i want to get text_field value in a variable and pass this value to edit method. I am using java script model but can not understand how to get value and pass. _employee_details.html.erb <div class="edit-recr-wrp1"> <button type="button" class="btn btn-primary fa fa-pencil-square-o" data-toggle="modal" data-target="#exampleModal1" data-whatever="<%= emp['offer_letter_id'] %>"></button> </div> <div class="modal fade" id="exampleModal1" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> </div> <div class="modal-body"> <h2 class="text-center">Edit <span>Employee Details</span></h2> <div class="post-new-job head-border"> <div class="alert alert-success" role="alert" id='success-job' style='display:none;'>Employee Details is successfully added.</div> <div class="form-body"> <div class="mydata1"> <%= text_field :ol_id, { class: 'form-control', id: 'recipient-name' } %> </div> <%= form_for :employee_details, url: hr_path(:ol_id), method: :patch do |f| %> <div class="col-md-12"> <div class="mydata"> <%= f.hidden_field :offer_letter_id, { class: 'form-control', id: 'recipient-name' } %> </div> <div class="form-group"> <label class="control-label">Employee ID</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-user"></i> </span> <%= f.text_field :employee_id, { :required => true, placeholder: 'E12345678', class: 'form-control' } %> </div> </div> <div class="form-group"> <label class="control-label">Bank Account</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-university"></i> </span> <%= f.text_field :bank_ac, { :required => true, placeholder: '06464060852634865', class: 'form-control' } %> </div> </div> <div class="form-group"> <label class="control-label">Bank IFSC Code</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-code"></i> </span> <%= f.text_field :bank_ifsc, { :required => true, placeholder: 'SBI012356', class: 'form-control' } %> </div> </div> <div class="form-group"> <label class="control-label">End of Date</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-calendar"></i> </span> <%= f.text_field :work_end_date, { placeholder: 'MM/DD/YYYY', id: 'datepicker1', class:"datepicker_style" } %> </div> </div> <div class="form-group"> <label class="control-label">Gender</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-male fa-female"></i> </span> <%= f.select :gender, ['Male', 'Female'], { :required => true }, class: "form-control" %> </div> </div> <div class="form-group"> <label class="control-label">Spouse Name</label> <div class="input-group"> <span class="input-group-addon"> <i class="fa fa-user"></i> </span> <%= f.text_field :spouse_name, { :required => true, placeholder: 'Father/Mother/Wife name', class: "form-control" } %> </div> </div> <br> <div class="form-group"> <a><%= f.submit "Edit Employee Details", :class => "btn btn-primary" %></a> </div> </div> <div class="col-md-2"></div> <%- end -%> </div> </div> </div> </div> </div> </div> <script type="text/javascript"> $('#exampleModal1').on('show.bs.modal', function (event) { var button = $(event.relatedTarget) var recipient = button.data('whatever') var modal = $(this) modal.find('.mydata1 input').val(recipient) }); </script>
the problems is here take ol_id and pass to hr_path <div class="mydata1"> <%= text_field :ol_id, { class: 'form-control', id: 'recipient-name' } %> </div> <%= form_for :employee_details, url: hr_path(:ol_id), method: :patch do |f| %>
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| Can't cast ReportImage to string in carrierwave Rails4 Posted: 24 Oct 2016 04:11 AM PDT Following ocumentation of carrierwave I added gem, generated ReportImage uploader, added t.string :report_image, null: true, unique: true
to Report migration table and mount_uploader :report_image, ReportImage
to Report model. But I get TypeError: can't cast ReportImage to string when trying to create Report without ReportImage (nil) Someone know how to fix it? |
| Retreive Values from Relationship table of has_and_belongs_to_many on Rails5 Posted: 24 Oct 2016 04:33 AM PDT I have two tables Role and User, and I linked those two tables with has_and_belongs_to_many relationship with rails. I'm successfully insert the data into the third table which is created by has_and_belongs_to_many relationship. Using the following code def create user_params[:password] = User.hash(user_params[:password]) @user = User.new(:first_name => user_params[:first_name], :last_name=>user_params[:last_name], :email => user_params[:email], :contact_number=>user_params[:contact_number], :password=>user_params[:password]) @roles = user_params[:roles]; for role in @roles @user.roles << Role.find(role) end if @user.save respond_to do |format| msg = { :status => "ok", :message => "User Creation Success!" } format.json { render :json => msg } end end end
Now my problem is how do I read the valuse from the relationship table and how do I update any value to the relationship table. |
| Rails migration and CREATE UNIQUE INDEX not working on DashDB / DB2 Posted: 24 Oct 2016 07:49 AM PDT I'm working on Rails 4.2.7 application on IBM Bluemix using Ruby 2.3.0. When I've installed Devise User model migration has been generated, just a standard file, no fancy options. During the deploy the migration is firing up three queries. First one for users table creation: CREATE TABLE users ( id INTEGER GENERATED BY DEFAULT AS IDENTITY (START WITH 1) PRIMARY KEY, email varchar(255) DEFAULT '' NOT NULL, encrypted_password varchar(255) DEFAULT '' NOT NULL, reset_password_token varchar(255), reset_password_sent_at timestamp, remember_created_at timestamp, sign_in_count integer DEFAULT 0 NOT NULL, current_sign_in_at timestamp, last_sign_in_at timestamp, current_sign_in_ip varchar(255), last_sign_in_ip varchar(255), created_at timestamp NOT NULL, updated_at timestamp NOT NULL)
And two for unique index creation: CREATE UNIQUE INDEX index_users_on_email ON USERS(email) CREATE UNIQUE INDEX index_users_on_reset_password_token ON USERS(reset_password_token)
First statement runs fine, the table is being created. However, the problem is that the table type is created with organize by column by default. CREATE UNIQUE INDEX statements were failing and it has appeared that to run them, the table has to be organized by row. I can remove the migration and create the table directly in the DB via SQL statement and adding organize by row clause at the end and then run two remaining queries. The problem is that I've encountered the same issue when migration wanted to run two below queries it did fail again: CREATE TABLE schema_migrations (version varchar(255) NOT NULL) CREATE UNIQUE INDEX unique_schema_migrations ON schema_migrations (version)
I think I can keep bumping on the same problem again and so I would like to find a way to make all tables organized by row by default, preferably with the migration. Has anyone encountered this issue before? My manifest.yml looks following: applications: - path: . buildpack: https://github.com/cloudfoundry/ruby-buildpack.git memory: 1024M instances: 1 domain: eu-gb.mybluemix.net name: windykacja host: windykacja disk_quota: 1024M services: - dashDB-win
and here is my gemfile: source 'https://rubygems.org' ruby '2.3.0' gem 'rails', '4.2.7' gem 'sass-rails', '~> 5.0' gem 'uglifier', '>= 1.3.0' gem 'coffee-rails', '~> 4.1.0' gem 'devise' gem 'bootstrap-sass', '~> 3.3.6' gem 'jquery-rails' gem 'turbolinks' gem 'jbuilder', '~> 2.0' gem 'sdoc', '~> 0.4.0', group: :doc group :production do gem 'rails_12factor' gem 'ibm_db' end group :development, :test do gem 'byebug' end group :development do gem 'web-console', '~> 2.0' gem 'spring' gem 'sqlite3' end
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| Trying to get value of current_user saved in a hidden field Posted: 24 Oct 2016 03:37 AM PDT I have a simple rails app in which, in one of the forms, I am trying to save the value of current user into a field using hidden field tag. My application controller has user_authenticate method which is also setting value of @current_user as below.
ApplicationController class ApplicationController < ActionController::Base protect_from_forgery with: :exception protected def authenticate_user if session[:user_id] # set current user object to @current_user object variable @current_user = User.find session[:user_id] return true else redirect_to(:controller => 'sessions', :action => 'login') return false end end def save_login_state if session[:user_id] redirect_to(:controller => 'sessions', :action => 'home') return false else return true end end end
The receipt model is defined with belongs_to user as below. Receipt model class Receipt < ApplicationRecord belongs_to :currency belongs_to :user end
and the view for form has a hidden field tag as below. Form <%= form_for(receipt) do |f| %> <% if receipt.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(receipt.errors.count, "error") %> prohibited this receipt from being saved:</h2> <ul> <% receipt.errors.full_messages.each do |message| %> <li><%= message %></li> <% end %> </ul> </div> <% end %> <div align="center" style="text-align: right; width: 50%"> <div class="field"> <%= f.label :receipt_date %> <%= f.date_select :receipt_date %> </div> </br> <div class="field"> <%= f.label :receipt_amount %> <%= f.text_field :receipt_amount %> </div> </br> <div class="field"> <%= f.label :Currency%> <%= f.collection_select :currency_id, Currency.all, :id, :currency %> </div> </br> <div class="field"> <%= f.hidden_field :user_id, :user_id => @current_user %> </div> </br> <div class="actions"> <%= f.submit %> </div> </div> <% end %>
Yet when I save the record I get an error - "User must exist". So essentially, the user field is going as 'nil'. My receipt controller is like this
ReceiptsController class ReceiptsController < ApplicationController before_action :set_receipt, only: [:show, :edit, :update, :destroy] # GET /receipts # GET /receipts.json def index @receipts = Receipt.all end # GET /receipts/1 # GET /receipts/1.json def show end # GET /receipts/new def new @receipt = Receipt.new end # GET /receipts/1/edit def edit end # POST /receipts # POST /receipts.json def create @receipt = Receipt.new(receipt_params) respond_to do |format| if @receipt.save format.html { redirect_to @receipt, notice: 'Receipt was successfully created.' } format.json { render :show, status: :created, location: @receipt } else format.html { render :new } format.json { render json: @receipt.errors, status: :unprocessable_entity } end end end # PATCH/PUT /receipts/1 # PATCH/PUT /receipts/1.json def update respond_to do |format| if @receipt.update(receipt_params) format.html { redirect_to @receipt, notice: 'Receipt was successfully updated.' } format.json { render :show, status: :ok, location: @receipt } else format.html { render :edit } format.json { render json: @receipt.errors, status: :unprocessable_entity } end end end # DELETE /receipts/1 # DELETE /receipts/1.json def destroy @receipt.destroy respond_to do |format| format.html { redirect_to receipts_url, notice: 'Receipt was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_receipt @receipt = Receipt.find(params[:id]) end # Never trust parameters from the scary internet, only allow the white list through. def receipt_params params.require(:receipt).permit(:receipt_date, :receipt_amount, :currency_id, :user_id) end end
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| When authenticated using API, Devise redirects to its default login view page every second time on failure Posted: 24 Oct 2016 02:41 AM PDT I am using token based authentication system for my APIs which is built based on Devise. The user is authorised to access the pages only when the email and mobile number linked with his/her account has been verified. If anyone of the above is not verified, the user gets the 403 access forbidden error message. def authenticate_user! unless current_user authorization_failed_error end if current_user.confirmed_at.blank? unconfirmed_email_error elsif current_user.mobile_confirmed_at.blank? unconfirmed_mobile_error end end
When an user with a unconfirmed email is trying to access a content through the API, error message is thrown. But if the same user tries for the second time, Devise redirects the user to the login view page. Above scenarios occur alternatively every time. current_user is set by the set_user_by_token function of the Devise, as below. def set_user_by_token(mappings=nil) rc = resource_class(:user) # no default user defined return unless rc #gets the headers names, which was set in the initialize file uid_name = 'Uid' access_token_name = 'Access-Token' client_name = 'Client' expiry_name = 'Expiry' # parse header for values necessary for authentication uid = request.headers[uid_name] || params[uid_name] @token ||= request.headers[access_token_name] || params[access_token_name] @client_id ||= request.headers[client_name] || params[client_name] # client_id isn't required, set to 'default' if absent @client_id ||= 'default' # check for an existing user, authenticated via warden/devise, if enabled devise_warden_user = warden.user(rc.to_s.underscore.to_sym) if devise_warden_user && devise_warden_user.tokens[@client_id].nil? @used_auth_by_token = false @resource = devise_warden_user @resource.create_new_auth_token end # user has already been found and authenticated return @resource if @resource and @resource.class == rc # ensure we clear the client_id if !@token @client_id = nil return end return false unless @token # mitigate timing attacks by finding by uid instead of auth token user = uid && rc.find_by_email(uid) if user && user.valid_token?(@token, @client_id) # sign_in with bypass: true will be deprecated in the next version of Devise if self.respond_to? :bypass_sign_in bypass_sign_in(user, scope: :user) else sign_in(:user, user, store: false, bypass: true) end @resource = user return @resource else # zero all values previously set values @client_id = nil return @resource = nil end end
I am not sure why Devise(or Warden) behaves like this every second time. It would be of great help if someone could figure this out. |
| Rails, Capistrano, Nginx, Unicorn - Application has been already initialized Posted: 24 Oct 2016 02:24 AM PDT I followed ChuckJHardy example on how to deploy a rails app to a VPS using Capistrano, Nginx, Unicorn. The deployment process passed from my local machine but my rails application is not loading fine. I am getting the following errors  I checked the log from my unicorn.rb log and I see the bellow errors. Please help me with some Idea's I am totally confuse. I, [2016-10-23T19:40:36.183042 #7200] INFO -- : Refreshing Gem list E, [2016-10-23T19:40:36.197960 #7200] ERROR -- : error reloading config_file=/home/deploy/apps/onozor/current/config/unicorn/production.rb: Application has been already initialized. (RuntimeError) E, [2016-10-23T19:40:36.198056 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/railties-4.0.6/lib/rails/application.rb:214:in `initialize!' E, [2016-10-23T19:40:36.198095 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/railties-4.0.6/lib/rails/railtie/configurable.rb:30:in `method_missing' E, [2016-10-23T19:40:36.198142 #7200] ERROR -- : /home/deploy/apps/onozor/releases/20161023193809/config/environment.rb:5:in `<top (required)>' E, [2016-10-23T19:40:36.198165 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/activesupport-4.0.6/lib/active_support/dependencies.rb:229:in `require' E, [2016-10-23T19:40:36.198199 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/activesupport-4.0.6/lib/active_support/dependencies.rb:229:in `block in require' E, [2016-10-23T19:40:36.198233 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/activesupport-4.0.6/lib/active_support/dependencies.rb:214:in `load_dependency' E, [2016-10-23T19:40:36.198260 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/activesupport-4.0.6/lib/active_support/dependencies.rb:229:in `require' E, [2016-10-23T19:40:36.198295 #7200] ERROR -- : config.ru:4:in `block in <main>' E, [2016-10-23T19:40:36.198315 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `instance_eval' E, [2016-10-23T19:40:36.198340 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/rack-1.5.5/lib/rack/builder.rb:55:in `initialize' E, [2016-10-23T19:40:36.198373 #7200] ERROR -- : config.ru:1:in `new' E, [2016-10-23T19:40:36.198393 #7200] ERROR -- : config.ru:1:in `<main>' E, [2016-10-23T19:40:36.198444 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `eval' E, [2016-10-23T19:40:36.198496 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn.rb:56:in `block in builder' E, [2016-10-23T19:40:36.198518 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:752:in `build_app!' E, [2016-10-23T19:40:36.198552 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:733:in `load_config!' E, [2016-10-23T19:40:36.198590 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/lib/unicorn/http_server.rb:314:in `join' E, [2016-10-23T19:40:36.198616 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/gems/unicorn-5.1.0/bin/unicorn:126:in `<top (required)>' E, [2016-10-23T19:40:36.198648 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/bin/unicorn:23:in `load' E, [2016-10-23T19:40:36.198669 #7200] ERROR -- : /home/deploy/apps/onozor/shared/bundle/ruby/2.3.0/bin/unicorn:23:in `<top (required)>' E, [2016-10-23T19:40:36.198686 #7200] ERROR -- : /home/deploy/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:74:in `load' E, [2016-10-23T19:40:36.198738 #7200] ERROR -- : /home/deploy/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:74:in `kernel_load' E, [2016-10-23T19:40:36.198762 #7200] ERROR -- : /home/deploy/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.6/lib/bundler/cli/exec.rb:27:in `run' E, [2016-10-23T19:40:36.198806 #7200] ERROR -- : /home/deploy/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.6/lib/bundler/cli.rb:332:in `exec' E, [2016-10-23T19:40:36.198862 #7200] ERROR -- : /home/deploy/.rvm/gems/ruby-2.3.0/gems/bundler-1.13.6/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
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| Chartkick for Newsletters Posted: 24 Oct 2016 03:27 AM PDT Is it possible to use Chartkick without rails? I would like to write a ruby script that generates a HTML newsletter which can be send by mail. The output should be a HTML file. How do I integrate Chartkick into my project and supply it with the data needed? |
| Unable to connect to Facebook via Koala on Rails 5 Posted: 24 Oct 2016 01:40 AM PDT My final aim is to create a cron job that retrieves my Facebook feed every day. I've been trying to connect to my Facebook app using Rails (5.0.0.1) and Koala gem (2.4.0) on a single controller so the server authenticates himself and get the token to access the Graph API. The problem is that the Koala method get_user_info_from_cookie returns nil therefore I don't know how to get the infamous Access Token. Is there anything wrong? Here what is in my controller. before_action :parse_facebook_cookies def parse_facebook_cookies @oauth = Koala::Facebook::OAuth.new( ENV['FB_APP_ID'], ENV['FB_SECRET_KEY'] ) @facebook_cookies ||= @oauth.get_user_info_from_cookie(cookies) end
My environment variables ENV['FB_APP_ID'] and ENV['FB_SECRET_KEY'] work and cookies is not empty, I've already checked. |
| Rails: how to render nested form in table Posted: 24 Oct 2016 01:57 AM PDT For example, I have two models: class Task < ApplicationRecord has_many :task_details end class TaskDetail < ApplicationRecord belong_to :task end
I want to display a table, each row in table is one TaskDetail and allow user input. After that user submits, all data will put to server. Here is my code: (Note that: I @data[:task] is a task object because I want to return a hash with some information for view) <%= form_for @data[:task], :url => tasks_path do |f| %> <table> ... </table> <% end %>
My question is: How can I do as my requirement. thanks |
| After deploying I need to refresh server for changes to reflect Posted: 24 Oct 2016 01:30 AM PDT I'm deploying a rails app using a service which uses a symblink method with current/release folders on Ubuntu 14.04. However every time I deploy I have to refresh the server in order to see changes reflected by running: sudo nginx -s reload
If I do a standard FTP deploy without any symblinks I can see the changes immediately. Is there anyway around refreshing the server in order in order for the updates to reflect? Thanks |
| Why does Google API set +01 offset no matter input? Posted: 24 Oct 2016 01:21 AM PDT I'm using Google's API Explorer for their Calendar API on this page. I am inserting an event { "end": { "dateTime": "2016-10-31T06:30:00Z" }, "start": { "dateTime": "2016-10-31T06:00:00Z" } } and have tried the following datetime formats: 2016-10-31T06:00:00Z 2016-10-31T06:00:00-00:00 2016-10-31T06:00:00+00:00
But no matter input format, Google chooses to add an hour when setting the datetime. The response is always: "start": { "dateTime": "2016-10-31T07:00:00+01:00" }
I'm currently in Stockholm, which has +2 hours offset. I've tried both setting the separate time_zone field and omitting the separate time_zone field. Why is this happening? And, is there any "right way" or do I simply need to take this added hour into account when setting time? |
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