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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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  • undefined method `parameterize' for nil:NilClass

    - by Senthil
    I've been trying to do SEO friendly urls, and managed to get it work, but when I call index action on blogs, I get a weird "undefined method `parameterize' for nil:NilClass." The method works when using show method. def to_s title end def to_param "#{id}-#{to_s.parameterize}" end

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  • How can I return something early from a block?

    - by ryeguy
    If I wanted to do something like this: collection.each do |i| return nil if i == 3 ..many lines of code here.. end How would I get that effect? I know I could just wrap everything inside the block in a big if statement, but I'd like to avoid the nesting if possible.

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  • Active Record Associations: has_one :through? Or multiple has_one's?

    - by jmccartie
    I'm brand new to Rails, so bear with me. I have 3 models: User, Section, and Tick. Each section is created by a user. My guess with this association: class Section < ActiveRecord::Base has_one :user end Next, each user can "tick" off a section -- only once. So for each tick, I have a section_id, user_id, and timestamps. Here's where I'm stuck. Does this call for a "has_one :through" association? If so, which direction? If not, then I'm way off. Which association works here? Thanks!

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  • Search by ID, no keyword. Tried using :conditions but no result ouput.

    - by Victor
    Using Thinking Sphinx, Rails 2.3.8. I don't have a keyword to search, but I wanna search by shop_id which is indexed. Here's my code: @country = Country.search '', { :with => {:shop_id => params[:shop_id]}, :group_by => 'trip_id', :group_function => :attr, :page => params[:page] } The one above works. But I thought the '' is rather redundant. So I replaced it with :conditions resulting as: @country = Country.search :conditions => { :with => {:shop_id => params[:shop_id]}, :group_by => 'trip_id', :group_function => :attr, :page => params[:page] } But then it gives 0 result. What is the correct code? Thanks.

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  • Does a rollback still occur if I use begin...rescue and an error occurs?

    - by codeman73
    I've got some strange errors happening in my rails app and I'm trying to log better errors instead of the whole stack of passenger stuff that I don't care about. I thought I would do this with a Rescue clause and explicit error handling, like logging the params hash. But I'm concerned if this would interrupt any rollback that is happening. For that matter, I'm assuming rollbacks automatically occur when an error occurs as part of the normal rails error handling, but I haven't been able to find that documented anywhere. I'm using Dreamhost with MySQL, so I thought transactions and rollbacks were happening there.

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  • How to include js file in ajax call?

    - by Anubhaw
    Hi All, I am calling a ajax method to update a div. It contains links and functions which require java script files. But these methods and functions are not getting called properly as java script files are not getting included through ajax call. For example, i am trying to call a light box function, but it gets redirected to different page and not in light box. Thanks in advance, Anubhaw Prakash

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  • Suggestion on Database structure for relational data

    - by miccet
    Hi there. I've been wrestling with this problem for quite a while now and the automatic mails with 'Slow Query' warnings are still popping in. Basically, I have Blogs with a corresponding table as well as a table that keeps track of how many times each Blog has been viewed. This last table has a huge amount of records since this page is relatively high traffic and it logs every hit as an individual row. I have tried with indexes on the fields that are included in the WHERE clause, but it doesn't seem to help. I have also tried to clean the table each week by removing old ( 1.weeks) records. SO, I'm asking you guys, how would you solve this? The query that I know is causing the slowness is generated by Rails and looks like this: SELECT count(*) AS count_all FROM blog_views WHERE (created_at >= '2010-01-01 00:00:01' AND blog_id = 1); The tables have the following structures: CREATE TABLE IF NOT EXISTS 'blogs' ( 'id' int(11) NOT NULL auto_increment, 'name' varchar(255) default NULL, 'perma_name' varchar(255) default NULL, 'author_id' int(11) default NULL, 'created_at' datetime default NULL, 'updated_at' datetime default NULL, 'blog_picture_id' int(11) default NULL, 'blog_picture2_id' int(11) default NULL, 'page_id' int(11) default NULL, 'blog_picture3_id' int(11) default NULL, 'active' tinyint(1) default '1', PRIMARY KEY ('id'), KEY 'index_blogs_on_author_id' ('author_id') ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ; And CREATE TABLE IF NOT EXISTS 'blog_views' ( 'id' int(11) NOT NULL auto_increment, 'blog_id' int(11) default NULL, 'ip' varchar(255) default NULL, 'created_at' datetime default NULL, 'updated_at' datetime default NULL, PRIMARY KEY ('id'), KEY 'index_blog_views_on_blog_id' ('blog_id'), KEY 'created_at' ('created_at') ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

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  • Rails, making certain multiparameter attributes optional?

    - by Joseph Silvashy
    Is there a method already part of Rails for making certain parameters option when part of a multiparameter attribute, for example say I'm prompting a user for their birthday, when saved the has may look like this: "birthday(2i)"=>"8", "birthday(3i)"=>"17", "birthday(1i)"=>"1980"}, ... But the issue arises when say I want to allow the user to just provide their month and day, making the year optional, how would this work being a datetime object, I'm assuming you can't do this as a date object... but any ideas would be helpful. Happy new year.

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  • Can an ActiveRecord before_save filter halt the save without halting the transaction?

    - by Michael Boutros
    Is there any way for a before_save filter to halt the entire save without halting the transaction? What I'm trying to do is have a "sample" version of my model that the user can interact with and save but the changes themselves are never actually saved. The following will halt the transaction and (naturally) return false when I call @model.update_attributes: before_filter :ignore_changes_if_sample def ignore_changes_if_sample if self.sample? return false end end Thanks!

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  • How do I define a foreign key that points to a class of a different name in ActiveRecord with Rails?

    - by Mark
    Hi there, I have a model Follow that defines a user_id and a followed_user_id. If you've used Twitter, this should make sense. I'm trying to make followed_user_id point to a User model, so I can access the user that is being followed through f.followed_user (in the same way that if I have an Entry with belongs_to :user and a user_id column I can use entry.user to get the user.) How can I do this? Thanks!

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  • using helper methods in a view in rails 3

    - by Frida777
    Hello everyone, there is something that is disturbing me a bit about rails 3. i am trying to upgrade my application from rails 2 to rails 3. i followed all the steps necessary to do and things were working well for me till now except one thing: i have a helper method that is defined differently in different helpers, for example it is defined in the application_helper in one way and the same method defined in a different way in the homepage_helper, and defined differently in another helper, let's say video_helper, in addition to that, it is used in a shared view that is used throughout the application, now if i am in the homepage, i want this function to get called from the homepage_helper and if i am in the video page, the function must be called from the video_helper, based on the concept of convention in rails, this worked perfectly in rails 2 but in rails 3, the function is always called from the last helper, alphabetically ordered, that is in the example, video_helper. How can i fix this? Kindly advice. Appreciate all the help.

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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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  • 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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  • Nested model form with collection in Rails 2.3

    - by kristian nissen
    How can I make this work in Rails 2.3? class Magazine < ActiveRecord::Base has_many :magazinepages end class Magazinepage < ActiveRecord::Base belongs_to :magazine end and then in the controller: def new @magazine = Magazine.new @magazinepages = @magazine.magazinepages.build end and then the form: <% form_for(@magazine) do |f| %> <%= error_messages_for :magazine %> <%= error_messages_for :magazinepages %> <fieldset> <legend><%= t('new_magazine') %></legend> <p> <%= f.label :title %> <%= f.text_field :title %> </p> <fieldset> <legend><%= t('new_magazine_pages') %> <% f.fields_for :magazinepages do |p| %> <p> <%= p.label :name %> <%= p.text_field :name %> </p> <p> <%= p.file_field :filepath %> </p> <% end %> </fieldset> <p> <%= f.submit :save %> </p> </fieldset> <% end %> problem is, if I want to submit a collection of magazinepages, activerecord complaints because it's expected a model and not an array. create action: def create @magazine = Magazine.new params[:magazine] @magazine.save ? redirect_to(@magazine) : render(:action => 'new') end

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  • How to define schema for an ActiveRecord model?

    - by Eric Stanton
    I can find how to define columns only when doing migrations. However i do not need to migrate my model. I want to work with it "virtually". Does AR read columns data only from db? Any way to define columns like in DataMapper? class Post include DataMapper::Resource property :id, Serial property :title, String property :published, Boolean end Now i can play with my model without migrations/connections.

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  • Rails: Added new Action in Controller, but there is no path?

    - by Newbie
    Hello! I try to do following: A user is on his profile page. Now he edits his profile. He klicks on update and the data is saved. Now I want to redirect the user to another kind of profile-edit-page. I did the following in my users_controller.rb: def update @user = User.find(params[:id]) respond_to do |format| if @user.update_attributes(params[:user]) flash[:notice] = 'User was successfully updated.' if(@user.team_id != nil) format.html { redirect_to(@user) } else format.html { redirect_to choose_team_path } end format.xml { head :ok } else format.html { render :action => "edit" } format.xml { render :xml => @user.errors, :status => :unprocessable_entity } end end end def choose_team @user = User.find(params[:id]) end I created a view: /users/choose_team.html.erb Now I get the following error: undefined local variable or method `choose_team_path' for #<UsersController:0x1f56650> So I added choose_team to my routes.rb: map.choose_team 'choose-team', :controller => 'users', :action => 'choose_team' Now, after submitting my first edit form, it redirects me to http://localhost:3000/choose-team and I get following error: Couldn't find User without an ID What I want: If a user has no team_id, he should be redirected to my choose_team.html.erb for choosing a team, else he should be redirected to his profile/show. How to do 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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  • :include and table aliasing

    - by dondo
    I'm suffering from a variant of the problem described here: ActiveRecord assigns table aliases for association joins fairly unpredictably. The first association to a given table keeps the table name. Further joins with associations to that table use aliases including the association names in the path... but it is common for app developers not to know about [other] joins at coding time. In my case I'm being bitten by a toxic mix of has_many and :include. Many tables in my schema have a state column, and the has_many wants to specify conditions on that column: has_many :foo, :conditions => {:state => 1}. However, since the state column appears in many tables, I disambiguate by explicitly specifying the table name: has_many :foo, :conditions => "this_table.state = 1". This has worked fine until now, when for efficiency I want to add an :include to preload a fairly deep tree of data. This causes the table to be aliased inconsistently in different code paths. My reading of the tickets referenced above is that this problem is not and will not be fixed in Rails 2.x. However, I don't see any way to apply the suggested workaround (to specify the aliased table name explicitly in the query). I'm happy to specify the table alias explicitly in the has_many statement, but I don't see any way to do so. As such, the workaround doesn't appear applicable to this situation (nor, I presume, in many 'named_scope' scenarios). Is there a viable workaround?

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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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  • How to use Many to Many in Rails?

    - by Newbie
    Hello! In my project, I have users and quests. One User can join multiple quests and one quest can have multiple users. So I created a table called questing, containing the user_id and the quest_id. In my user.rb I did following: require 'digest/sha1' class User < ActiveRecord::Base has_many :questings has_many :quests ,:through =>:questings ... My Quest.rb: class Quest < ActiveRecord::Base has_many :questings has_many :users ,:through =>:questings ... My Questing.rb: class Questing < ActiveRecord::Base belongs_to :quest belongs_to :user end Now I want to create a link or button on my /quests/show.html.erb, calling an action in my controller, which will create the relationship between user and quest. So, in my quest_controller I did: def join_quest @quest = Quest.find(params[:id]) puts '************************' puts 'join quest:' + @quest.id puts '************************' respond_to do |format| format.html { redirect_to(@quest) } format.xml { head :ok } end end and in my show.html.erb I did: <%= link_to 'join this quest!!!', :action => :join_quest %> Now, clicking on this link will cause an error like: Couldn't find Quest with ID=join_quest and the url points to */quests/join_quest* instead of */quests/1/join_quest* Now my questions: Is my quests_controller the right place for my join_quest action, or should I move it to my users_controller? Why do I get this error? How to solve it? What do I have to write in my join_quest action for saving the relationship? On my /users/show.html.erb I want to output all quests the user joined. How to do this? I have to get all this quests from my relationship table, right? How? I hope you can help me! THX!

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