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  • need an empty string, but getting an exception in ruby on rails

    - by Jon
    controller @articles = current_user.articles view <% @articles.each do |article| %> <%= link_to "#{article.title} , #{article.author.name}" articles_path%> <% end %> Sometimes the article has no author, so is null in the database, which results in the following error You have a nil object when you didn't expect it! The error occurred while evaluating nil.name I still want to output the article title in this scenario, whats the best way to do this please?

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  • Rails, search item in different model?

    - by Danny McClelland
    Hi Everyone, I have a kase model which I am using a simple search form in. The problem I am having is some kases are linked to companies through a company model, and people through a people model. At the moment my search (in Kase model) looks like this: # SEARCH FACILITY def self.search(search) search_condition = "%" + search + "%" find(:all, :conditions => ['jobno LIKE ? OR casesubject LIKE ? OR transport LIKE ? OR goods LIKE ? OR comments LIKE ? OR invoicenumber LIKE ? OR netamount LIKE ? OR clientref LIKE ? OR kase_status LIKE ? OR lyingatlocationaddresscity LIKE ?', search_condition, search_condition, search_condition, search_condition, search_condition, search_condition, search_condition, search_condition, search_condition, search_condition]) end What I am trying to work out, is what condition can I add to allow a search by Company or Person to show the cases they are linked to. @kase.company.companyname and company.companyname don't work :( Is this possible? Thanks, Danny

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  • Needed help with deleting rails cache

    - by WarDoGG
    I have been given a project of editing a website which is coded in RoR. However, the changes which i make in the view file is not visible immediately after a hard refresh but after 15-20 mins, the changes reflect. I am guessing this has something to do with the RoR caching system. Can someone please help me out ? The changes i made are purely HTML based like changing HTML attributes, filenames etc...

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  • rails, activerecord callbacks not saving

    - by Joseph Silvashy
    I have a model with a callback that runs after_update: after_update :set_state protected def set_state if self.valid? self.state = 'complete' else self.state = 'in_progress' end end But it doesn't actually save those values, why not? Regardless of if the model is valid or not it won't even write anything, even if i remove the if self.valid? condition, I can't seem to save the state. Um, this might sound dumb, do I need to run save on it?

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  • ruby on rails adding new route

    - by ohana
    i have an RoR application Log, which similar to the book store app, my logs_controller has all default action: index, show, update, create, delete.. now i need to add new action :toCSV, i defined it in logs_controller, and add new route in the config/routes as: map.resources :logs, :collection = { :toCSV = :get }. from irb, i checked the routes and see the new routes added already: rs = ActionController::Routing::Routes puts rs.routes GET /logs/toCSV(.:format)? {:controller="logs", :action="toCSV"} then ran ‘rake routes’ command in shell, it returned: toCSV_logs GET /logs/toCSV(.:format) {:controller="logs", :action="toCSV"} everything seems working. finally in my views code, i added the following: link_to 'Export to CSV', toCSV_logs_path when access it in the brower 'http://localhost:3000/logs/toCSV', it complained: Couldn't find Log with ID=toCSV i checked in script/server, and saw this one: ActiveRecord::RecordNotFound (Couldn't find Log with ID=toCSV): app/controllers/logs_controller.rb:290:in `show' seems when i click that link, it direct it to the action 'show' instead of 'toCSV', thus it took 'toCSV' as an id...anyone know why would this happen? and to fix it? Thanks...

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  • Rails page caching and flash messages

    - by KJF
    I'm pretty sure I can page cache the vast majority of my site but the one thing preventing me from doing so is that my flash messages will not show, or they'll show at the wrong time. One thing I'm considering is writing the flash message to a cookie, reading it and displaying it via javascript and clearing the cookie once the message has been displayed. Has anyone had any success doing this or are there better methods? Thanks.

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  • jquerry in rails

    - by Matthias Günther
    I'm iteration over records and want to create the toggle-options for records but I can't replace the div-id with the records: <% for bill in @bills % <% tmp = "test"% <%= link_to '&raquo now','#', :onclick = '$("#{tmp}").toggle();' % Instead of getting: &raquo now I'm getting: &raquo now So he isn't evaluation the ruby variable in the string. How can I do this? Thanks for your help and I'm new in jquerry.

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  • Rails populate edit form for non-column attributes

    - by Rabbott
    I have the following form: <% form_for(@account, :url => admin_accounts_path) do |f| %> <%= f.error_messages %> <%= render :partial => 'form', :locals => {:f => f} %> <h2>Account Details</h2> <% f.fields_for :customer do |customer_fields| %> <p> <%= customer_fields.label :company %><br /> <%= customer_fields.text_field :company %> </p> <p> <%= customer_fields.label :first_name %><br /> <%= customer_fields.text_field :first_name %> </p> <p> <%= customer_fields.label :last_name %><br /> <%= customer_fields.text_field :last_name %> </p> <p> <%= customer_fields.label :phone %><br /> <%= customer_fields.text_field :phone %> </p> <% end %> <p> <%= f.submit 'Create' %> </p> <% end %> As well as attr_accessor :customer And I have a before_create method for the account model which does not store the customer_fields, but instead uses them to submit data to an API.. The only thing I store are in the form partial.. The problem I'm running into is that when a validation error gets thrown, the page renders the new action (expected) but none of the non-column attributes within the Account Detail form will show? Any ideas as to how I can change this code around a bit to make this work me?? This same solution may be the help I need for the edit form, I have a getter for the data which it asks the API for, but without place a :value = "asdf" within each text box, it doesn't populate the fields either..

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  • rendering specific fields with Rails

    - by Tam
    Hi, If I have an object say @user and I want to render only certain fields in it say first_name and last_name(I'm using AMF) render :amf => @user how do I do that? I know I can use :select when doing the 'find' but I need to use the other field at the server side but don't want to send them with AMF to the client side and I don't want to do a second 'find' Thanks, Tam

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  • Ruby on Rails and database associations

    - by Marco
    Hi to all, I'm new to the Ruby world, and there is something unclear to me in defining associations between models. The question is: where is the association saved? For example, if i create a Customer model by executing: generate model Customer name:string age:integer and then i create an Order model generate model Order description:text quantity:integer and then i set the association in the following way: class Customer < ActiveRecord::Base has_many :orders end class Order < ActiveRecord::Base belongs_to :customer end I think here is missing something, for example the foreign key between the two entities. How does it handle the associations created with the keywords "has_many" and "belongs_to" ? Thanks

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  • Rails acts_as_taggable_on grouped alphabetically?

    - by Ray Dookie
    Having sorted the tag_counts hash via the following code: sorted_tags = Contact.tag_counts.sort{ |x,y| x.name.downcase <= y.name.downcase } what is the easiest/most efficient way to display the tags in my view grouped by letters? i.e A - "Alpha", "Apple", "Aza" B - "Beta", "Bonkers" . . . Z - "Zeta", "Zimmer" Any ideas?

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  • Resource mapping in a Ruby on Rails URL (RESTful API)

    - by randombits
    I'm having a bit of difficulty coming up with the right answer to this, so I will solicit my problem here. I'm working on a RESTFul API. Naturally, I have multiple resources, some of which consist of parent to child relationships, some of which are stand alone resources. Where I'm having a bit of difficulty is figuring out how to make things easier for the folks who will be building clients against my API. The situation is this. Hypothetically I have a 'Street' resource. Each street has multiple homes. So Street :has_many to Homes and Homes :belongs_to Street. If a user wants to request an HTTP GET on a specific home resource, the following should work: http://mymap/streets/5/homes/10 That allows a user to get information for a home with the id 10. Straight forward. My question is, am I breaking the rules of the book by giving the user access to: http://mymap/homes/10 Technically that home resource exists on its own without the street. It makes sense that it exists as its own entity without an encapsulating street, even though business logic says otherwise. What's the best way to handle this?

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  • Rails - Accessing model class methods from within ActiveRecord model

    - by aaronrussell
    I have a simple standalone model that doesn't inherit from ActiveRecord or anything else, called SmsSender. As the name suggests, it delivers text messages to an SMS gateway. I also have an ActiveRecord model called SmsMessage which has an instance method called deliver: def deliver SmsSender.deliver_message(self) self.update_attributes :status => "Sent" end The above is returning uninitialized constant SmsSender. I'm sure this is dead simple, but how can I access the SmsSender class from within my model?

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  • AJAX in Rails - doing simple looping to update information when available

    - by Acidburn2k
    I am trying to get put out a simple site, which would pool the database every few seconds and update the information on the page dynamicly, when theres something new inserted. I am farily new to ruby, but I understand the whole concept of RJS, link_to_function and soforth. The question is, what is the best way how to implement some kind of simple loop, which would run after the page is loaded and update the DOM if there is something new to display. Thanks in advance for any tips!

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  • Changing the id parameter in Rails routing

    - by japancheese
    Hello, Using rails3 new routing system, is it possible to change the default :id parameter resources :users, :key => :username come out with the following routes /users/new /users/:username /users/:username/edit ...etc I'm asking because although the above example is simple, it would be really helpful to do in a current project I'm working on. Is it possible to change this parameter, and if not, is there a particular reason as to why not?

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  • Rails (pagination and tags)

    - by Vitaly
    Hey, I stumbled upon a problem of how to mix both acts_as_taggable (on steroids) and will_paginate gems. What I found on this problem is this: http://www.mckinneystation.com/2007/08/20/pagination-with-acts_as_taggable_on_steroids-acts_as_ferret-and-will_paginate/ But it's dated of 2007, may be there's something more recent? And also could you explain in details what should I do to make that fix work?

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  • Bootstrap Modal & rails remote

    - by Kevin Brown
    Using this bootstrap modal extension and animate.css for fun, how can I take a make an easy ajax modal using :remote => true to fill in the modal box? Also, how would I use the bootstrap modal default "submit/cancel" buttons to interact with a form that's loaded? I'm looking for a more dynamic solution instead of hard-html-ing every modal into the page or using a bunch of jquery ajax calls for each dialog. I've done a few quick searches, but they've turned up nil for this particular solution.

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  • Where to put constants in Rails

    - by Sam
    I have a few constants which are arrays that I don't want to create db's for but I don't know where to store the constants without getting errors. For example CONTAINER_SIZES = [["20 foot"],["40 foot"]] Where can I store this so all models and controller have access to this?

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  • rails expiring cache

    - by ash34
    Hi, I entered some products data into a table using a migration. I need to expire the page and fragment cache when I update, add, delete products from this table. I created a sweeper for this. class ProductSweeper < ActionController::Caching::Sweeper observe Product def after_create expire_cache end def after_save expire_cache end def after_update expire_cache end def after_destroy expire_cache end private def expire_cache expire_page(:controller => 'ProductsController', :action => 'index') expire_fragment 'listed_products' end end Then in script/console I update the product name and saved. When I reload my app in the browser it still gives me a cache hit. Cached fragment hit: views/listed_products (0.2ms) Can someone tell me how to expire this cache. I will not be adding, updating, deleting products through a controller action. thanks, ash

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  • Rails migration won't run, no error thrown

    - by kouak
    Here's a simple migration I'd like to run : class AddTimeOfRevisionToBrandWikis < ActiveRecord::Migration def self.up add_column :brand_wikis, :time_of_revision, :datetime end def self.down remove_column :brand_wikis, :time_of_revision end end Here's what I get when I try to run it : $ rake db:migrate (in /Users/kouak/Documents/workspace/wtb) You have 1 pending migrations: 20100404115341 AddTimeOfRevisionToBrandWikis Run "rake db:migrate" to update your database then try again. What's wrong with rake db:migrate ?

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  • Ruby on Rails with_option cannot call class method

    - by Dmitri
    I have a problem calling class method from the with_option block with validations: Model: class Model < ActiveRecord::Base attr_accessible :field with_options :if => "<not important>" do |step| ... bunch of validations step.validates :field, :inclusion => {:within => Model.field} end private self.field (1..10) end end And it returns: undefined method `field' for #Class:0x5f394a8 self.class.field also doesn't work. What is wrong with it ? How to fix it ? Big big thanks!

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