I'm having trouble making will_paginate work together with squeel.
The following code makes a search using params from a form.
def self.search(params)
if params
campo_a_pesquisar = params[:column]
item_status_fisico = params[:item_status_fisico]
item_status_logico = params[:item_status_logico]
criterio = params[:criterio]
q = self
q = q.where{item_status_logico_id =~ my{item_status_logico}} unless item_status_logico.nil?
q = q.where{item_status_fisico_id =~ my{item_status_fisico}} unless item_status_fisico.nil?
q = q.where{(__send__(column) =~ my{criterio})} unless criterio.empty?
q = q.where{(id != 0)} if criterio.empty?
else
self
end
end
It works for "DisponÃvel" (item_status_logico) and "Funciona" (item_status_fisico). But if I put something on :criterio it breaks with the following message:
undefined method `paginate' for nil:NilClass
My controller has a list method which invoke everything
def list
#itens = Item.search(params[:item]).paginate(:page => params[:page])
end
I look on the following material to figure out. But I couldn't.
https:// github.com/ernie/squeel/wiki/Tips-and-tricks
https:// github.com/ernie/squeel
http:// railscasts.com/episodes/354-squeel
Can anyone help?
Info:
ruby (1.9.3)
will_paginate (3.0.4)
squeel (1.0.18)
rails (3.2.13)
Related
I have a Rails 3.2.13 Application to maintenance.
Because of authorization rules i want to limit the find(params[:file_registry_id]) method to accept all parameters except 752. (Only user tehen should be able to get it.)
def show
if current_user.tehen?
#file_registry = FileRegistry.find(752)
else
#file_registry = FileRegistry.find(params[:file_registry_id])
end
#rubric = Rubric.find(params[:id])
#rubrics = expanded_rubrics #rubric.ancestors_with_self.collect(&:id)
set_favorites
render :action => 'index'
end
Is there a method available to filter an element (here id 752) from the params hash? Or what's the best way to go?
Simple solution:
def show
#file_registry = get_file_registry
#....
end
private
def get_file_registry
if current_user.tehen?
FileRegistry.find(752)
else
unless params[:file_registry_id] == FORBIDDEN_ID_FOR_GUEST
FileRegistry.find(params[:file_registry_id])
else
false
end
end
end
FORBIDDEN_ID_FOR_GUEST should be defined outside of the controller, for example inside of a initializer.
But I suggest to use a authorization library like CanCan (https://github.com/ryanb/cancan) where you can define permissions for every use case.
I have a helper_method that allows links to escape from a subdomain. However it is impacting my videos_controller, as it essentially seems to negate the 'current_event' method when not in the events controlller.
I've tried several dozen different ways over the last 4 days to make it so I can still escape my links from the subdomain, but still allow the videos_controller to work.
I think the best way to achieve this is to exclude the videos_controller from the helper method, but I'm not sure how (or if it is actually the best way forward - I'm obviously a noob!) Any suggestions please?! Relevant code below:
module UrlHelper
def url_for(options = nil)
if request.subdomain.present? and request.subdomain.downcase != 'www' and !options.nil? and options.is_a?(Hash) and options.has_key? :only_path and options[:only_path]
options[:only_path] = false
end
super
end
end
Videos_controller
def new
if current_event?
#video = current_event.videos.new
else
#video = Video.new
end
end
def create
if current_event.present?
#video = current_event.videos.new(params[:video])
#video.user_id = current_user.id
key = get_key_from_the_cloud
#video.key = key
else
#video = current_user.videos.new(params[:video])
#video.user_id = current_user.id
key = get_key_from_the_cloud
#video.key = key
end
if #video.save
flash[:success] = "Video uploaded!"
redirect_to root_url(subdomain: => current_event.name)
else
flash[:error] = "#{#video.errors.messages}"
render :new
end
end
current_event method
def current_event
if request.subdomain.present?
#event = Event.find_by_name(request.subdomain)
end
end
Did you take a look at this post yet?
You might want to create a new function test that only does something like
module UrlHelper
def test
puts "Test is called"
end
end
If that works you know its not including that fails but it has to be the method.
Otherwise you know the module is not included and you can narrow down the search.
I'm trying to step through a list of records that are retrieved with find_each.
I patterned my controller code on the answer in this stack overflow post, but I'm still getting a "No Block Given (Yield)" error.
I'm just getting started in Ruby and Rails and I haven't yet found a full fledged explanation (lots of basic examples though) of blocks and yield that gives me what I need.
My code looks like this:
def select_save
#class = params[:class]
#student_id = params[:id]
#class.each do |id|
old_subject = Subject.find(id)
new_subject = old_subject.dup
new_subject.student_id = #student_id
new_subject.save
Assignment.find_each.where(:subject_id => id) do |assignments|
assignments.each do |a|
new_assignment = a.dup
new_assignment.subject_id = new_subject.id
new_assignment.save
end
end
end
respond_to do |format|
format.html { redirect_to #student, :notice => 'Subject and assignments created.' }
end
end
and the error points to the line with find_each.
I know I need a block to yield to, but how exactly that would look in this particular case escapes me.
Thanks for any suggestions.
You're passing a block to where and no block to find_each. You can't do that. You need to reverse find_each and where on this line, the order is important as the block is passed to the last method invoked:
Assignment.find_each.where(:subject_id => id) do |assignments|
It should read:
Assignment.where(:subject_id => id).find_each do |assignments|
Your next problem is you're trying to iterate over assignments, which is a single Assignment. find_each is already doing the iteration for you, passing one assignment into the block at a time. The block should read:
Assignment.where(:subject_id => id).find_each do |assignment|
new_assignment = assignment.dup
new_assignment.subject_id = new_subject.id
new_assignment.save
end
I'm going to make the assumption that your Subject has many Assignments, since you have a subject_id inside your Assignment class. If this is the case, the final and most correct way to write your loop would be:
old_subject.assignments.each do |assignment|
new_assignment = assignment.dup
new_assignment.subject_id = new_subject.id
new_assignment.save
end
I am using ActiveResource to manage accessing an external service.
The external service has an URL like:
http://api.cars.com/v1/cars/car_id/range/range_num?filter=filter1,filter2
Here's my Car class:
class Car < ActiveResource::Base
class << self
def element_path(id, prefix_options = {}, query_options = nil)
prefix_options, query_options = split_options(prefix_options) if query_options.nil?
"#{prefix(prefix_options)}#{collection_name}/#{URI.parser.escape id.to_s}#{query_string(query_options)}"
end
def collection_path(prefix_options = {}, query_options = nil)
prefix_options, query_options = split_options(prefix_options) if query_options.nil?
"#{prefix(prefix_options)}#{collection_name}#{query_string(query_options)}"
end end
self.site = "http://api.cars.com/"
self.prefix = "/v1/"
self.format = :json
end
When I set up my object to get a particular car in rails console:
> car = car.new
> car.get('1234')
I get a URL like this:
http://api.cars.com/v1/cars//1234.json
How do I get the URL to include the range and range_num elements?
Also, i don't want the .json extension on the end of the URL. I've attempted overriding the element_name and collection_name methods as described here: How to remove .xml and .json from url when using active resource but it doesn't seem to be working for me...
Thanks in advance for any ideas!
Get rid of the forward slash in the URL
"#{prefix(prefix_options)}#{collection_name}/#{URI.parser.escape id.to_s}#{query_string(query_options)}"
becomes:
"#{prefix(prefix_options)}#{collection_name}#{URI.parser.escape id.to_s}#{query_string(query_options)}"
Im getting the following error:
undefined method `authorize_from_request'
Based on the documenation here: http://oauth.rubyforge.org/rdoc/classes/OAuth/Consumer.html
That method doesnt exist, but I saw this method used here:
http://teachmetocode.com/screencasts/oauth-with-the-twitter-gem/ and
so I'm guessing it was deprecated some time ago, but I can't seem to
find its replacement and was wondering what other way could I go about
solving this issue?
Thanks in Advance!
Controller Code:
class TwitterController < ApplicationController
def index
end
def login
oauth_request_token = oauth.get_request_token(:oauth_callback => "http://gnome.local/twitter/finalize")
session[:request_token] = oauth_request_token.token
session[:request_secret] = oauth_request_token.secret
redirect_url = oauth_request_token.authorize_url
redirect_url = "http://" + redirect_url unless redirect_url.match(/^http:\/\//)
redirect_to redirect_url
end
def finalize
oauth.authorize_from_request(session[:request_token], session[:request_secret], params[:oauth_verifier])
#client = Twitter::Client.new(oauth).verify_credentials
session[:request_token] = nil
session[:request_secret] = nil
oauth_access_token = oauth.get_access_token
#oauth_token = session[:oauth_token] = oauth_access_token.token
session[:oauth_secret] = oauth_access_token.secret
end
def client
oauth.authorize_from_access(session[:auth_token])
end
def oauth
#oauth ||= OAuth::Consumer.new(APP_CONFIG[:twitter][:consumer_key], APP_CONFIG[:twitter][:consumer_secret], :site => "http://api.twitter.com", :request_endpoint => "http://api.twitter.com", :sign_in => true);
end
end
(Original Post: http://groups.google.com/group/oauth-ruby/browse_thread/thread/614b27e4f5d80fab)
Got the same problem, the solution is to use according to the (old) Twitter gem:
request_token.get_access_token(oauth_verifier: params[:oauth_verifier])