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  • Two Different Types of Associatons on the Same Two Tables in Rails

    - by tmo256
    I have two models, users and themes, that I'm currently joining in a HABTM association in a themes_users table. Basically, after a user creates a new theme, it becomes available to other users to select for their own use. However, only the original creator of the theme should have the ability to edit it. So, I need to have some other kind of association to handle that relationship, something like an created_by_id field in the theme. In this way, the user model acts as two different roles: they can be an implementer of a theme AND/OR the owner of the theme. The implementer relationship is handled by the themes_users join table; the question is: What is the right way to handle this secondary association? Do I need to make users polymorphic and then make the created_by_id reference an "owner"? Or is there something easier? Thanks so much for your help!

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  • Will_paginate Plugin on two objects on same page

    - by piemesons
    Hello I am using will_paginte plugin on two objects on a same page. Like on stackoverflow. There is a profile page on which there is a pagination on two things QUestions and answers. I am having problem ie:-- when user is clicking on questions pagination page 2. answers page are also updating. The reason is both is sending a post variable ie params[:page] How to change this variable so that only one should be updated. and how to maintain that user should not lose the other page. ie he is on 3rd page of questions and 1st page of answers and now he click on 5th page of the questions the result should be 3rd page of questions and 5th page of answers.

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  • Saving form values to database after a user logs in

    - by redfalcon
    Hi. We have a form with ratings to submit for a certain restaurant. After the user has entered some values and wants to submit them, we check whether the user is logged in or not. If not, we display a login form and let the user put in his account data and redirect him to the restaurant he wanted to submit a rating for. The problem is, that after he successfully logged in himself, the submitted values are not saved to the database (which works fine if the user is already logged in). So I wondered if it is possible, to somehow save the data although the user is not logged in. I thought of maybe saving the filled values in a variable and have then automatically re-entered after we redirected the user. But I guess this wont work because we use before_filter :login_required, :only => [ :create ] So we couldnt even access the filled in values, since we display the login-form before the method has processed the values in the form, right? Any idea how we can make rails to save the values or at least have them automatically re-entered to the form? Thanks!

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  • Routing error when trying to use same view for update and create flows (Rails 3)

    - by Jamis Charles
    My overall use case: I have a Listing model that has many images. The Listing detail page lists all the fields that can be updated inline (through ajax). I want to be able to use the same view for both update listing and create new listing. My listing controller looks as follows: def detail @listing = Listing.find(params[:id]) @image = Image.new #should this link somewhere else? respond_to do |format| format.html # show.html.erb format.xml { render :xml => @listing } end end def create # create a new listing and save it immediately. Assign it to guest, with a status of "draft" @listing = Listing.new(:price_id => 1) # Default price id # save it to db # TODO add validation that it has to have a price ID, on record creation. So the view doesn't break. @listing.save @image = Image.new # redirect_to "/listings/detail/@listing.id" #this didn't work respond_to do |format| format.html # show.html.erb format.xml { render :xml => @listing } end end The PROBLEM I'm using a partial that shows the same form for the create view and the detail view. This works perfectly except for one thing: When I pull up http://0.0.0.0:3000/listings/detail/7, it works perfectly. When I pull up http://0.0.0.0:3000/listings/new, I get the following error: Showing /Applications/MAMP/htdocs/rails_testing/feedbackd/app/views/listings/_edit_form.html.erb where line #100 raised: No route matches {:action="show", :controller="images"} Extracted source (around line #100): 97: <!-- Form for new images --> 98: <div class="span-20 append-bottom"> 99: <!-- <%# form_for :image, @image, :url => image_path, :html => { :multipart => true } do |f| %> --> 100: <%= form_for @image, :url => image_path, :html => { :multipart => true } do |f| %> 101: <%= f.text_field :description %><br /> 102: <%= f.file_field :photo %> 103: <%= submit_tag "Upload" %> What I think the issue is: When I upload a new image (I'm using Paperclip), it requires the listing_id to create the image record. Since the listing_id isn't passed in with listings/new it can't find the listing_id. How can I pass in the id? Via a redirect? What's the best way to solve this? Thank you.

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  • In Rails, how would I include a section of a page only if the rest of the page doesn't match a certain regexp?

    - by Simon
    We have a site with a lot of user-generated content, and we'd like to show Google ads on it. Some of the content is such that we mustn't show the ads on pages containing that content, or else the whole site gets banned. We've come up with a regexp which we think will match all the offending content. So, three approaches come to mind: Render the page once without the ad section, and then insert the ad section into it if it's clean Render the page as normal, and do the insertion in client-side javascript Render the page above the ad section, capturing only the parts of the page that change; make sure there are no changing parts afterwards. Only show the ads if the captured text is clean, and make sure the unchanging, uncaptured parts are well-vetted in advance. The first one seems like it might delay the page rendering for too long; the second seems like it might delay showing the ads too long; and the third seems too fragile. Is there a better approach? If not, which one is the best solution of the three?

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  • Rails creating users, roles, and projects

    - by Bobby
    I am still fairly new to rails and activerecord, so please excuse any oversights. I have 3 models that I'm trying to tie together (and a 4th to actually do the tying) to create a permission scheme using user-defined roles. class User < ActiveRecord::Base has_many :user_projects has_many :projects, :through => :user_projects has_many :project_roles, :through => :user_projects end class Project < ActiveRecord::Base has_many :user_projects has_many :users, :through => :user_projects has_many :project_roles end class ProjectRole < ActiveRecord::Base belongs_to :projects belongs_to :user_projects end class UserProject < ActiveRecord::Base belongs_to :user belongs_to :project has_one :project_role attr_accessible :project_role_id end The project_roles model contains a user-defined role name, and booleans that define whether the given role has permissions for a specific task. I'm looking for an elegant solution to reference that from anywhere within the project piece of my application easily. I do already have a role system implemented for the entire application. What I'm really looking for though is that the users will be able to manage their own roles on a per-project basis. Every project gets setup with an immutable default admin role, and the project creator gets added upon project creation. Since the users are creating the roles, I would like to be able to pull a list of role names from the project and user models through association (for display purposes), but for testing access, I would like to simply reference them by what they have access to without having reference them by name. Perhaps something like this? def has_perm?(permission, user) # The permission that I'm testing user.current_project.project_roles.each do |role| if role.send(permission) # Not sure that's right... do_stuff end end end I think I'm in over my head on this one because I keep running in circles on how I can best implement this.

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  • Rails - Why is my custom validation being triggered for only a build command.

    - by adam
    I have a sentence and correction model with a has_one and belongs_to relationship respectively. For some reason when I do def create @sentence = Sentence.find(params[:sentence_id]) @correction = @sentence.build_correction(params[:correction]) a custom validation I wrote for Correction is being called at the build_correction point. the validation is below class Correction < ActiveRecord::Base attr_accessible :text, :sentence_id, :user_id belongs_to :sentence belongs_to :user validate :correction_is_different_than_sentence def correction_is_different_than_sentence errors.add(:text, "can't be the same as the original sentence.") if (text == self.sentence.text) end the problem is for some reason on validation the correction object doesn't have the sentence id set (despite I used the build_correction method) and so it complains "you have nil object .... while executing nil.text" in the if clause in the validation above. So my question is why is the validation occuring for a build command, i thought it only triggers on a create or update. And why isnt the sentence_id getting set?

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  • passing text_field values in ajx on rails

    - by user163352
    I'm using <%= text_field 'person', 'one',:id => 'test', :onchange=>remote_function(:url=>{:action=>"update"}, :update=>"test") %> <div id="test"></div> Now I just want to send the value of text_field with :action i.e :url=>{:action=>"update(value_of_text_field_entered"} Don't want to use params[:person][:one]. Any suggestions?or how can I use <%= observe_field % to send the value with action?

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  • How does Rails Plugin Storage work?

    - by Kevin
    Trying to figure out how to install rails plugins manually on windows so I have a few questions. What does the directory need to be named in vendor/plugins? Is it arbitrary or is it linked to something within the plugin config files or is that what you set in the environment.rb? Once I've copied the files to the correct directory, do I always need to run something inside like init.rb or is it good to go? What's the difference between 'require' and 'include'? Thanks!

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  • Multiple roles with attributes(?) in Capistrano

    - by Justin
    How can I pass along attributes to my tasks in capistrano? I'm thinking it would be something along the lines of... role :app, [["server_one", {:name => "alice"}], ["server_two", {:name => "bob"}], ["server_three", {:name => "charles"}]] And then for my task... task :start_server do run "./myscript #{name}" end Any ideas?

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  • rails db migration, undefined method `to_sym', cant figure out syntax

    - by oelbrenner
    the original migration looks like this: class CreateUsers true do |t| t.string :login, :limit = 40 t.string :name, :limit = 100, :default = '', :null = true t.string :email, :limit = 100 t.string :crypted_password, :limit = 40 t.string :salt, :limit = 40 t.string :remember_token, :limit = 40 t.datetime :remember_token_expires_at t.string :activation_code, :limit = 40 t.datetime :activated_at, :datetime t.string :state, :null = :no, :default = 'passive' t.datetime :deleted_at t.integer :occupation_id, :null = :yes t.datetime :paid_up_to_date, :date t.timestamps end and I am trying to change the default of "state" to be "active" instead of passive so my attempt at a migration looks like this: ( still learning.. be gentle ) class ChangeUserStateDefault < ActiveRecord::Migration def self.up change_column :users, :state, :null = :no, :default = 'active' end def self.down end end

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  • How to add or remove a value inside a table cell on selection / de-selection of checkbox of that row, trying to submit the value via Jquery?

    - by Raul
    Here is the table: <%= form_tag '', :id => "costs" do %> <table class="table table-bordered" id="service_cost"> <% @services.each do |service| %> <tbody> <tr> <td><%= check_box_tag :open_service, {}, false, :class => 'checkable' %></td> <td><%= service.phone %></td> <td><%= service.internet %></td> <td></td> <td></td> <td></td> <td></td> <td></td> <td><%= service.house_keeping %> </td> <td>0.0 </td> <td><%= service.laundry %></td> <td><%= text_field_tag "service_cost", service.total, :class => "input-small" %></td> </tr> <% end %> when the form gets submitted, the javascript gets into action: $("#costs").submit(function(){ formData=$("#costs").serializeArray(); processFormData(formData) return false; }); This ensures form submission on selecting the checkbox: $('.checkable').live('change', function() { $(this).parents('form:first').submit(); }); But, what I am looking for is adding or removing a cell value based on checkbox selection/de-selection and submitting it, kindly suggest a way to do it.

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  • How do I avoid a race condition in my Rails app?

    - by Cathal
    Hi, I have a really simple Rails application that allows users to register their attendance on a set of courses. The ActiveRecord models are as follows: class Course < ActiveRecord::Base has_many :scheduled_runs ... end class ScheduledRun < ActiveRecord::Base belongs_to :course has_many :attendances has_many :attendees, :through => :attendances ... end class Attendance < ActiveRecord::Base belongs_to :user belongs_to :scheduled_run, :counter_cache => true ... end class User < ActiveRecord::Base has_many :attendances has_many :registered_courses, :through => :attendances, :source => :scheduled_run end A ScheduledRun instance has a finite number of places available, and once the limit is reached, no more attendances can be accepted. def full? attendances_count == capacity end attendances_count is a counter cache column holding the number of attendance associations created for a particular ScheduledRun record. My problem is that I don't fully know the correct way to ensure that a race condition doesn't occur when 1 or more people attempt to register for the last available place on a course at the same time. My Attendance controller looks like this: class AttendancesController < ApplicationController before_filter :load_scheduled_run before_filter :load_user, :only => :create def new @user = User.new end def create unless @user.valid? render :action => 'new' end @attendance = @user.attendances.build(:scheduled_run_id => params[:scheduled_run_id]) if @attendance.save flash[:notice] = "Successfully created attendance." redirect_to root_url else render :action => 'new' end end protected def load_scheduled_run @run = ScheduledRun.find(params[:scheduled_run_id]) end def load_user @user = User.create_new_or_load_existing(params[:user]) end end As you can see, it doesn't take into account where the ScheduledRun instance has already reached capacity. Any help on this would be greatly appreciated.

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  • Port a Rails App from Windows to Mac

    - by Ryan Max
    Hello I've been a Rails developer on Windows for quite some time now, but I recently completed my biggest project yet (it's quite extensive, took me over a year to build) but I am having trouble deploying it. The combination of it's size, complexity and a windows environment is making it needlessly complex to deploy. I am thinking about getting an old mac mini and using it just for rails development. Is there any way I can port my app to this mac, without having to start over? I can't find any resources on the internets about this.

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  • Manually output HAML start and end tags

    - by trobrock
    I have some code: - count = 0 - @clients.each do |client| %div{:class => "grid_2#{(" alpha" if (count % 3) == 0) || (" omega push_2" if (count % 3) == 2) || " push_1"}"}= link_to h(client.name), client - count += 1 I want to output an opening div tag right after the each statement if the (count % 3) == 0 and out put the end tag at the end of the block if the (count % 3) == 2 but I can't figure out how to get HAML to do this. Any ideas?

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  • Instance_eval: why the class of subclass is superclass

    - by Raj
    def singleton_class class << self self end end class Human proc = lambda { puts 'proc says my class is ' + self.name.to_s } singleton_class.instance_eval do define_method(:lab) do proc.call end end end class Developer < Human end Human.lab # class is Human Developer.lab # class is Human ; oops Following solution works. def singleton_class class << self self end end class Human proc = lambda { puts 'proc says my class is ' + self.name.to_s } singleton_class.instance_eval do define_method(:lab) do self.instance_eval &proc end end end class Developer < Human end Human.lab # class is Human Developer.lab # class is Human ; oops Why Developer.lab is reporting that it is Human ? And what can be done so that proc reports Developer when Developer.lab is invoked.

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  • :confirm option in Rails being ignored.

    - by peehskcalba
    I've got a table of projects in my Rails app, each with a delete link, like so: <%= link_to "Delete", project, :confirm => "Are you sure?", :method => :delete %> However, the delete request is sent even if the user clicks "Cancel" on the dialog box. Any ideas on how to fix this?

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  • setting minDate in datepicker in Rails

    - by Sakshi Jain
    I need to apply minDate attribute to the datepicker in Rails App. In _admin_controls.html.erb <%= f.input :end_date, wrapper: :append do %> <div id="datepicker" class="datepicker input-group edit-left"> <%= f.text_field :end_date, :class => "datetime form-control" %> application.js contains jQuery(document).on('focus', 'input.datetime', function() { opts = {format: 'M dd, yyyy', autoclose: true}; jQuery(this).datepicker(opts); jQuery(".datepicker").css("z-index",10000); }); What should be the javascript to do so only for _admin_controls.html.erb?

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  • Getting this error in rails: `ActionView::Template::Error (code converter not found (UTF-8 to UTF-16))`

    - by Victor S
    I've started getting the following error in one of my views for some reason, I don't get it in development, but only in production. Here is a snippet of the backtrace, any ideas? ActionView::Template::Error (code converter not found (UTF-8 to UTF-16)): 19: [title, summary.gsub(/^/, " "), nil].join("\n\n") 20: end 21: end.join 22: sections = sections.force_encoding('UTF-8').encode('UTF-16', :invalid => :replace).encode('UTF-8') if sections.respond_to?(:force_encoding) 23: %> 24: 25: <%= raw sections %>

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