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  • How to find the most recent associations created between two objects with Rails?

    - by Kevin
    Hi, I have a user model, a movie model and this association in user.rb (I use has_many :through because there are other associations between these two models): has_many :has_seens has_many :movies_seen, :through = :has_seens, :source = :movie I'm trying to get an array of the ten most recent has_seens associations created. For now, the only solution I found is to crawl through all the users, creating an array with every user.has_seens found, then sort the array by has_seen.created_at and only keep the last 10 items… Seems like a heavy operation. Is there a better way? Kevin

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  • validation before ajax form submission

    - by ZX12R
    How do i introduce validation before remote_form_for submits? I have javascript function called validateForm(). I am able to call it before the AJAX request process. I tried to use return false and event.preventDefault. But there seems to be no effect. Here is what my code looks like <% remote_form_for :customer, :update =>"uxScreenLoaderDiv", :url => {:action => "login", :controller => "site"}, :html => {:id => "uxLoginForm"}, :onsubmit => "validateForm(event)" do |f| %> User name : <%= f.text_field "uxUserName", :class => "TextBox", :style => "width:100px;" %>&nbsp;* &nbsp;Password : <%= f.password_field "uxPassword", :class => "TextBox", :style => "width:100px;" %>&nbsp;* <%= f.submit "Go!", :class => "Button-Simple", :id => "uxSubmitButton" %> <% end %> the javascript function is simple as follows function validateForm(event){ return false; //event.preventDefault(); }

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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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  • How to scale thumbnail to fit depending on tall or wide photo - Attachment_fu

    - by adamwstl
    I'm using attachment_fu and Rmagick to create thumbnails after upload. The thumbnail is a fixed 135 x 135 px and I'm currently forcing the width to 135px on all photos. The problem is that if it's a wide and fat photo is has to stretch the height awkwardly. Current Attachment_fu setup class PhotoImage < Image belongs_to :photo has_attachment :content_type => :image, :size => 0..5.megabytes, :storage => :s3, :resize_to => '650x>', :thumbnails => { :thumbnail => '135x>' }#:geometry => 'x50' } validates_as_attachment end Here's what I'm trying to do: Thanks

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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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  • Adding additional sorting attributes to array of records...then sorting!

    - by keruilin
    Let's say I run an ActiveRecord query and it returns 3 results, with a bunch of attributes. I want to add 3 attributes to each record in the Array so I can do sorting at a code-level. These 3 include: num_comments, num_views, last_view. How do I add these attributes? How do I then sort the records, in order of precendence, by num_comments AND by num_views AND by last_view?

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  • Phonegap ( + rails ) basic sample app for profile listing, browsing?

    - by Rubytastic
    Im looking for a sample or tutorial to get started with phonegap. Im building a profile site and want the profiles to be listed in phonegap This is the functionality I look for: Basic login and with autentication in our rails app After login a listing of all profiles getting data from the rails app and display this inside phonegap Listing of profiles with basic search What would be the best and quickest way to get this functionality up and running? Is there some best practice on using rails and phonegap? If anyone knows a tutorial or sample app like described above please let know! Thanks!

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  • How to simulate a close() in facebox

    - by Bragaadeesh
    Hi, I am using facebox popup in one of my pages. I am having a button in the popup dialog. When I click that button the facebox popup should close (the same way it closes when we press outside the popup). How to do that? Also, I am doing some Ajax stuff when that button is being pressed so I cannot override the onClick event.

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  • Rails authorization plugins

    - by jacklin
    We are evaluating plugins for Authorization in Rails. The two at the top of our list are cancan and declarative_authorization. I would like to get some feedback from anyone currently using either of these plugins. The problem we are going to face with any authorization plugin is that we have a database per customer model and will need to modify the plugin to work within that model. Because of this fact I'm interested in hearing from anyone who has had to tweak the plugins at all as well. I'm just starting to look around at the code. It seems like cancan might be a little easier to customize. Any thoughts?

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  • session problem in rails

    - by piemesons
    I am getting this error. No :secret given to the #protect_from_forgery call. Set that or use a session store capable of generating its own keys (Cookie Session Store). I deleted all the cookies, values from sessions table. Restarted my server.Still geting the same error and this code was working yesterday.

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  • How can I rename by CarrierWave file versions?

    - by AKWF
    Upon the uploading of an image in my application, 4 different sizes are created and saved using CarrierWaves version functionality. However, I am converting all of these versions to JPEG. The source file that is uploaded remains unchanged. So I can upload a TIFF file, and CarrierWave will create :large, :medium, :small, and :thumb versions. My problem is that these files all still end in .tif. Yet they are indeed JPEG files, as I've verified this with the file command. How can I write the filenames correctly for each version, and ensure that CarrierWave will report each version's name correctly?

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  • Regex to validate for Unique Well Identifier in rails

    - by Jasper502
    I am a regex newbie and can't seem to figure this one out. Here is a link to the required string formats: http://earth.gov.bc.ca/royp-bin/phcgi.exe?PH_QKC=DOCUWI&PH_APP=RMSprodApp&PH_HTML=DOCUWI.htm For example: 100041506421W500 = 1+0+{01-16}+{01-36}+{001-129}+{01-36}+W+{1-6}+0+{0-9} I tried this: ^10[0|2-9]{1}0*([1-9]|1[0-6])0*([1-9]|[12][0-9]|3[0-6])0*([1-9][0-9]|1[0-2][0-9])0*([1-9]|[12][0-9]|3[0-6])W[1-6]0[0-9]$ In a regex validator and it sort of works except that 1041506421W500 and 10000000041506421W500 validates. The entire string can only be 16 characters long. I am pretty sure I am missing something obvious here regarding the leading zeros. Tried the NTS format and running into the same sort of problems.

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  • Dynamic use of :default_url in Paperclip

    - by dgilperez
    I'm trying to configure Paperclip to provide different missing images based on the instance's category attribute. Every category of the object has its own missing image. This is my first take: EDIT to add full models: class Service < ActiveRecord::Base attr_accessible :logo, :logo_file_name, :logo_content_type, :logo_file_size, :logo_updated_at belongs_to :category, :counter_cache => true has_attached_file :logo, :path => "/:id-:style-:filename", :url => ":s3_eu_url", :default_url => "/logos/:style/#{self.category.name]}.png", :styles => { :large => "600x400>", :medium => "300x200>", :small => "100x75>", :thumb => "60x42>" } end class Category < ActiveRecord::Base attr_accessible nil has_many :services end In my view, image_tag service.logo.url(:thumb) outputs: undefined method `category' for #<Class:0x0000010a731620> Any ideas? EDIT2: A working default_url is :default_url => "/logos/:style/missing.png", SOLUTION: See my own answer below.

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  • jQuery get request against Sinatra does not get text

    - by jerhinesmith
    I have a very simple sinatra site that I'm trying to access via ajax through jQuery. To keep things incredibly simple, this code snippet: get '/behavior_count' do "60" end which returns "60" in the browser, shows up as an empty string when attempting to access the site via $.get in jQuery. The strange part is in Firebug, while the Response is empty, the HTTP header correctly describes Content-Length as 2, and I can see the request show up on the server. Is there something specific to Sinatra that isn't returning my data, or am I not using jQuery correctly? If it helps, I also tried this code: get '/behavior_count' do content_type 'text/plain', :charset => 'utf-8' "60" end and my jQuery looks like $.get('http://mysite:4567/behavior_count'); // Ignore the response, but // watch the request in firebug Any ideas?

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  • Validate dependent model validation and show error message.

    - by piemesons
    Just taking a simple example. We have a question on stackoverflow and while posting a question we want to validate title_of_question, description_of_question that they should be present. Now we have a another model tag having habtm relationshio with question model. How to validate that while saving the question. Means question must have some tags. here the code:-- Models:-- class Question < ActiveRecord::Base belongs_to :user has_and_belongs_to_many :tags has_many :comments, :as => :commentable has_many :answers, :dependent => :destroy validates_presence_of :title, :content, :user_id end class Tag < ActiveRecord::Base has_and_belongs_to_many :questions validates_presence_of :tag end Form for entering question and tag <div class="form"> <% form_for :question ,@question, :url => {:action => "create" } do |f| %> <fieldset> <%= f.error_messages %> <legend>Post a question</legend> <div> <%= f.label :title %>: <%= f.text_field :title, :size => 100 %> </div> <div> <%= f.label :content ,'Question' %>: <%= f.text_area :content, :rows => 10, :cols => 100 %> </div> <div> <%= label_tag 'tags' %>: <%= text_field_tag 'tag' ,'',:size=> 60 %> add multiple tag using comma </div> <div> <%= submit_tag "Post question" %> </div> </fieldset> <% end %> </div> From Controller.. (Right now question will be saved without validating tag) def create @question = Question.new(params[:question]) @question.user_id=session[:user_id] if @question.save flash[:notice] = "Question has been posted." redirect_to question_index_path else render :action => "new" end end questions_tags table has been created. One approach is creating a virtual column using attribute accessors. another approach is validate associated. right now assuming new tags can be created.(but not duplicate).

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  • Processing large recordsets in Rails

    - by japancheese
    Hello, I'm trying to perform a daily operation on a larger than normal dataset (2m+ records). However, Rails seems to take a very long time performing operations on such a dataset. Operations like Dataset.all.each do |data| ... end take a very long time to complete (I assume this is because it can't fit all the items into memory at once, right?). Does anyone have any strategies on how I could handle this situation? I know SQL would probably speed up the process, but I'm looking to use the Rails environment as I can do many more complicated things to the data than I can with just SQL statements.

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  • How to create picture slideshows in a rails project? Flash or otherwise

    - by Janak
    In a rails project how would I create a picture slideshow? It could be generated as flash or use prototype or something else. I just want a series of images (as a sub-part of a web page, not be the whole page) to fade into each other, and to advance manually if clicked. It would be nice if I could do things like slowly zoom into the images I imagine there must be a plugin or something to handle this?

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  • using respond_to format.js to replace the content of a textarea on rails

    - by Stacia
    I have some saved text in my create controller. If it's not stressful, I'd like it to populate a textarea on the page with the saved text along with displaying the error message fields (which is what's already happening). I've used things like replace_html before, but I don't know if there's an easy way to get to textarea or text field IDs and just replace the value of the text. For now I'm just going to do some javascript but it would be nice to know the rails shortcut. edit: I wasn't in the right mindset because this app uses extjs and was trying to figure out how to do it this way. The text box is actually an ext status bar (same as here : http://www.extjs.com/deploy/dev/examples/statusbar/statusbar-demo.html ) which doesn't get created until the page is finished loading. When I try to enter commnands like the first poster suggested, I get "setvalue is not a function". Playing with firebug on the page I can get it to set the value after loading by using (whatever method to get it through ext or scriptaculous).value = "lol" but none of the page update things work with this.

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  • Where do I put the Current user query so as to not repeat per controller?

    - by Kevin
    I have a standard query that gets the current user object: @user = User.find_by_email(session[:email]) but I'm putting it as the first line in every single controller action which is obviously not the best way to do this. What is the best way to refactor this? Do I put this as a method in the Application controller (and if so, can you just show me a quick example)? Do I put the entire @user object into the session (has about 50 columns and some sensitive ones like is_admin)? Or is there another way to remove this kind of redundancy?

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  • Take data from an XML file and put it into a MySQL database

    - by Aidan
    Hi Guys, I'm looking to construct a script that would go through an XML file. Would find specific tags in it, put them in a table and fill the table with specific tags within them. I'm using MySQL 5.1 so loadXML isn't an option and I think that ExtractData() method wont be much use either.. but I don't really know. What would be the best way to go about this?

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  • catching the value of a time_select in rails.

    - by ZeroSoul13
    Hello, I have a form that has two field (time_selects), the idea is that the user can select the beginning of a call and end time of the call. I've setup a observe field and works fine: <%= observe_field "llamada_inicio_4i", :update => "total", :with => "llamada_inicio_4i", :url => { :controller => "llamadas", :action => "time_tracker"}%> Sends the value out: Processing LlamadasController#time_tracker (for 127.0.0.1 at 2010-04-22 17:48:41) [POST] Parameters:"llamada_inicio_4i"="23",authenticity_token"="+D+yPSVue6yQNfPMuVLkrJn7B9tP6z5S1icKpPFTiso="} Rendering template within layouts/llamadas Rendering llamadas/time_tracker Completed in 5ms (View: 3, DB: 0) | 200 OK [http://0.0.0.0/llamadas /time_tracker] How can i catch this value Parameters:"llamada_inicio_4i"="23"

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  • Hash default value not being used

    - by ba
    Today I tried the following snippets of code and I don't understand why I get different results between them. As far as I can understand they are the same. One uses the default value off Hash and the other snippet creates an empty array for the key before it'll be accessed. Anyone who understands what's going on? :) # Hash default if the key doesn't have a value set is an empty Array a = Hash.new([]) a[:key] << 2 # => [2] p a # => {} nil p a[:key] # => [2] # Explicitly add an array for all nodes before creating b = Hash.new b[:key] ||= [] b[:key] << 2 # => [2] p b # => {:key=>[2]}

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