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  • How can I keep a div's scrollbar at the bottom of the div using jQuery?

    - by dannytatom
    I have a div called #output, styled with overflow: scroll;. Using jQuery.ajax, it's being updated every x second. I'd like to have it so that when the scrollbar appears (after the divs filled up), it should continously stay at the bottom of the div instead of the top, like most chat clients do. I'm sure there's a way to do this, I just can't seem to find it. Here's the Sass #output :margin 0 0 10px 0 :padding 10px :height 500px :overflow scroll :background #111111 :border 1px solid #000000 :color #8e8e8e and the Haml is just a simple #output = @output

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  • class method as hash value

    - by demas
    I have this working code: class Server def handle(&block) @block = block end def do @block.call end end class Client def initialize @server = Server.new @server.handle { action } end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server My Server will handle more then one action so I want to change code such way: class Server def handle(options) @block = options[:on_filter] end def do @block.call end end class Client def initialize @server = Server.new my_hash = { :on_filter => action } @server.handle(my_hash) end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server It is incorrect code because action() method calls on create my_hash, but if I try to modify code to: my_hash = { :on_filter => { action } } i get error message. Is it possible to create hash with methods as hash values ?

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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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  • Rendering partial for table row with form_tag is getting crazy!

    - by xopht
    I have 23(column)x6(row) table and change the row with link_to_remote function. each tr tag has its own id attribute. change link call change action and change action changes the row using render function wit partial. _change.html.erb <td id="row_1">1</td> . . omitted . . <td id="row_23">23</td> link_to_remote function <%= link_to_remote 'Change', :update => 'row_1', :url => change_path %> change action def change logger.debug render :partial => 'change' end If I coded like above, everything work okay. This means all changed-columns are in one row. But, if I wrap partial code with *form_for* function like below... <% form_for 'change' do %> <td id="row_1">1</td> . . omitted . . <td id="row_23">23</td> <% end %> Then, one column located in one row and that column is the first column. I've looked up the log file, but it was normal html tags. What's wrong?

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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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  • 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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  • rails 3, active record: any way to tell how many unique values match a "x LIKE ?" query

    - by jpwynn
    I have a query to find all the phone numbers that match a partial expression such as "ends with 234" @matchingphones = Calls.find :all, :conditions => [ "(thephonenumber LIKE ?)", "%234"] The same phone number might be in the database several times, and so might be returned multiple times by this query if it matches. What I need is to know is UNIQUE phone numbers the query returns. For example if the database contains 000-111-1234 * 000-111-3333 000-111-2234 * 000-111-1234 * 000-111-4444 the existing query will return the 3 records marked with * (eg returns one phone number -1234 twice since it's in the database twice) what I need is a query that returns just once instance of each match, in this case 000-111-1234 * 000-111-2234 *

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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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  • 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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  • How to specify multiple values in where with AR query interface in rails3

    - by wkhatch
    Per section 2.2 of rails guide on Active Record query interface here: which seems to indicate that I can pass a string specifying the condition(s), then an array of values that should be substituted at some point while the arel is being built. So I've got a statement that generates my conditions string, which can be a varying number of attributes chained together with either AND or OR between them, and I pass in an array as the second arg to the where method, and I get: ActiveRecord::PreparedStatementInvalid: wrong number of bind variables (1 for 5) which leads me to believe I'm doing this incorrectly. However, I'm not finding anything on how to do it correctly. To restate the problem another way, I need to pass in a string to the where method such as "table.attribute = ? AND table.attribute1 = ? OR table.attribute1 = ?" with an unknown number of these conditions anded or ored together, and then pass something, what I thought would be an array as the second argument that would be used to substitute the values in the first argument conditions string. Is this the correct approach, or, I'm just missing some other huge concept somewhere and I'm coming at this all wrong? I'd think that somehow, this has to be possible, short of just generating a raw sql string.

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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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  • Rails SQL Query with find

    - by Nave
    I want this SQL query to be written in rails controller using find select id,name from questions where id not in (select question_id from levels_questions where level_id=15) How will I do this?I am using Rails framework and MySQL db thanks in advance.

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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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  • 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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  • How do I create a point system in a Rails/Twitter app that assigns points to users and non-authentic

    - by codyvbrown
    I'm building a question and answer application on top of twitter and I'm hitting some snags because I'm inevitably dealing with two classes of users: authenticated and non-authenticated. The site enable users to give points to other users, who may or may not be authenticated, and I want to create a site-wide point system where the application stores and displays this information on their profile. I want to save this point data to the user because that would be faster and more efficient but non-authenticated users aren't in our system, we only have the twitter handle. So instead we display the points in our system like this: @points = point.all( :select => "tag, count(*) AS count", # Return tag and count :group => 'tag', # Group by the tag :order => "2 desc", :conditions => {:twitter_handle => params[:username]}) Is there a better way to do this? Is there a better way to associate data with non-authenticated users?

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  • Mixing has_one and has_and_belongs_to_many associations

    - by Thomas
    I'm trying to build a database of urls(links). I have a Category model that has and belongs to many Links. Here's the migration I ran: class CreateLinksCategories < ActiveRecord::Migration def self.up create_table :links_categories, :id => false do |t| t.references :link t.references :category end end def self.down drop_table :links_categories end end Here's the Link model: class Link < ActiveRecord::Base validates :path, :presence => true, :format => { :with => /^(#{URI::regexp(%w(http https))})$|^$/ } validates :name, :presence => true has_one :category end Here's the category model: class Category < ActiveRecord::Base has_and_belongs_to_many :links end And here's the error the console kicked back when I tried to associate the first link with the first category: >>link = Link.first => #<Link id: 1, path: "http://www.yahoo.com", created_at: "2011-01-10... >>category = Category.first => #<category id : 1, name: "News Site", created_at: "2011-01-11... >>link.category << category => ActiveRecord::StatementInvalid: SQLite3::Exception: no such column : categories.link_id: Are my associations wrong or am I missing something in the database? I expected it to find the links_categories table. Any help is appreciated.

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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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  • 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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  • 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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