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  • Rails forms: render different actions based on validation

    - by Martin Petrov
    Is it possible to render different actions based on what fails at validation? For example - I have one field in the form - email addres. It is validated like this: validates :email, :presence => true, :uniqueness => { :case_sensitive => false } In the controller: def create @user = User.new(params[:user]) if @user.save redirect_to somewhere else # render :new if email is blank # redirect_to somwhere if email is taken end end

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  • calulate according to the DOB given

    - by rohini
    Hi I made student list containing roll no.,name, gender, DOB,Age ,marks1,marks2,marks3,total and avg. i want to right a code for age that is when i click on age it should display the correct age according to the DOB given. can you help using textbox events in c#

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  • exactly what does rake db:migrate do?

    - by happythenewsad
    Does rake db:migrate only add new migrations, or does it drop all migrations/changes and build everything new? I think rake is throwing an error because it is trying to access a table attribute in migration 040 that was deleted in migration 042. somehow my DB and rake are out of synch and I want to fix them. for you experts out there - is it common for rake to get out of synch with migrations? how can I avoid this (no, I do not hand-edit my schema or rake files).

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  • Rails: validate presence of parent_id in has_many association

    - by deb
    I have a projects resource that has many tasks. I want to ensure that every task has a project_id by adding validates_presence_of :project_id to the tasks model. However, when creating a new project with tasks, the project_id won't be available until the record saves, therefore I can't use validates_presence_of :project_id. So my question is, how do I validate presence of project_id in the task model? I want to ensure every task has a parent. ... class Project < ActiveRecord::Base has_many :tasks, :dependent => :destroy accepts_nested_attributes_for :tasks, :allow_destroy => true ... class Task < ActiveRecord::Base belongs_to :project validates_presence_of :project_id

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  • Field name being converted in Unit Tests [rails]?

    - by yar
    I am noting this strange behavior where one of my fields -- receive_empresa_test_info -- has worked fine though it's always been referred to as receive_empresa_info. In Functional Tests, though, the real field name is receive_empresa_test_info. What is going on here? Might this be some part of the Rails environment that I'm missing during testing?

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  • No such file to load, Model/Lib naming conflict?

    - by Tom
    I'm working on a Rails application. I have a Module called Animals. Inside this Module is a Class with the same name as one of my Models (Dog). show_animal action: def show_animal require 'Animals/Bear.rb' #Works require 'Animals/Dog.rb' #Fails end So the first require definitely works, the seconds fails. MissingSourceFile (no such file to load -- Animals/Dog.rb): I noticed that Dog.rb is the same file name as one of my models, is that what's causing this? I'm using Webrick.

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  • Regular Expression Routes in Rails

    - by Kevin Sylvestre
    I am looking to create a rails route that is capable of accepting requests using a regular expression. Specifically, I need optional paths. As an example: "(/first)?(/second)?" Would match: /first /second /first/second But not: /second/first Is this possible? Thanks.

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  • Help me with query string parameters (Rails)

    - by Martin Petrov
    Hi, I'm creating a newsletter. Each email contains a link for editing your subscription: <%= edit_user_url(@user, :secret => @user.created_at.to_i) %> :secret = @user.created_at.to_i prevents users from editing each others profiles. def edit @user = user.find(params[:id]) if params[:secret] == @user.created_at.to_i render 'edit' else redirect_to root_path end end It doesn't work - you're always redirected to root_path. It works if I modify it like this: def edit @user = user.find(params[:id]) if params[:secret] == "1293894219" ... 1293894219 is the "created_at.to_i" for a particular user. Do you have any ideas why?

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  • Rails using plural table names even though I told it to use singular

    - by Jason Swett
    I tried to run rake test:profile and I got this error: ... Table 'mcif2.accounts' doesn't exist: DELETE FROM `accounts` I know accounts doesn't exist. It's called account. I know Rails uses plural table names by default but here's what my config/environment.rb looks like: # Load the rails application require File.expand_path('../application', __FILE__) # Initialize the rails application McifRails::Application.initialize! ActiveRecord::Base.pluralize_table_names = false And here's what db/schema.rb looks like: ActiveRecord::Schema.define(:version => 0) do create_table "account", :force => true do |t| t.integer "customer_id", :limit => 8, :null => false t.string "account_number", :null => false t.integer "account_type_id", :limit => 8 t.date "open_date", :null => false So I don't understand why Rails still wants to call it accounts sometimes. Any ideas? If it helps give any clues at all, here are the results of grep -ir 'accounts' *.

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  • fields_for to stop pluralizing.

    - by Dmitriy Likhten
    I have a fields_for tag, where I specify the prefix (lets say for some good reasons), and this is supposed to represent a one-to-one relationship. I am trying to represent a relationship widget has_many thingamagigs thingamagig has_one whatchamacallit The field_for code is: fields_for "widgt[thingamagigs_attributes][][whatchamacallit_attributes]", thingamagig.whatchamacallit do |x| which generates names (wrongly): widget[thingamagigs_attributes][][whatchamacallit_attributes][][value] The better solution would be t.fields_for :whatchamacallit do |x| where t = fields_for the thingamagig... However if I do that, the following names are generated widgt[thingamagigs_attributes][whatchamacallit_attributes][] which is completely wrong as all other fields for a thingamagig is... widgt[thingamagigs_attributes][][name] So in all cases I am screwed. The original field_for using a string cannot be used with accepts_nested_attributes_for :whatchamacallit since whatchamacallit is a singular relationship and an object is expected not an array. The second fields_for will simply not work because rails cannot parse the params object correctly. Is there a way to tell the first forms_for to not add the [] after [whatchamacallit_attributes] in all field names?

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  • Optional mix of filter parameters in a search the Rails way.

    - by GSP
    I've got a simple list page with a couple of search filters status which is a simple enumeration and a test query which I want to compare against both the title and description field of my model. In my controller, I want to do something like this: def index conditions = {} conditions[:status] = params[:status] if params[:status] and !params[:status].empty? conditions[???] = ["(descr = ? or title = ?)", params[:q], params[:q]] if params[:q] and !params[:q].empty? @items = Item.find(:all, :conditions => conditions) end Unfortunately, it doesn't look like I can mix the two types of conditions (the hash and the paramatized version). Is there a "Rails Way" of doing this or do I simply have to do something awful like this: has_status = params[:status] and !params[:status].empty? has_text = params[:q] and !params[:q].empty? if has_status and !has_text # build paramatized condition with just the status elsif has_text and !has_status # build paramatized condition with just the text query elsif has_text and has_status # build paramatized condition with both else # build paramatized condition with neither end I'm migrating from Hibernate and Criteria so forgive me if I'm not thinking of this correctly... Environment: Rails 2.3.4

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  • How can I figure out where all these extra sqlite3 selects are being generated in my rails app?

    - by radixhound
    I'm trying to figure out where a whole pile of extra queries are being generated by my rails app. I need some ideas on how to tackle it. Or, if someone can give me some hints, I'd be grateful. I get these: SQL (1.0ms) SELECT name FROM sqlite_master WHERE type = 'table' AND NOT name = 'sqlite_sequence' SQL (0.8ms) SELECT name FROM sqlite_master WHERE type = 'table' AND NOT name = 'sqlite_sequence' SQL (0.8ms) SELECT name FROM sqlite_master WHERE type = 'table' AND NOT name = 'sqlite_sequence' repeated over and over on every request to the DB (as much as 70 times for a single request) I tried installing a plugin that traced the source of the queries, but it really didn't help at all. I'm using the hobofields gem, dunno if that is what's doing it but I'm somewhat wedded to it at the moment Any tips on hunting down the source of these extra queries?

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  • counter_cache not updating on the model after save

    - by sehnsucht
    I am using a counter_cache to let MySQL do some of the bookkeeping for me: class Container has_many :items end class Item belongs_to :container, :counter_cache => true end Now, if I do this: container = Container.find(57) item = Item.new item.container = container item.save in the SQL log there will be an INSERT followed by something like: UPDATE `containers` SET `items_count` = COALESCE(`items_count`, 0) + 1 WHERE `containers`.`id` = 57 which is what I expected it to do. However, the container[:items_count] will be stale! ...unless I container.reload to pick up the updated value. Which in my mind sort of defeats part of the purpose of using the :counter_cache in favor of a custom built one, especially since I may not actually want a reload before I try to access the items_count attribute. (My models are pretty code-heavy because of the nature of the domain logic, so I sometimes have to save and create multiple things in one controller call.) I understand I can tinker with callbacks myself but this seems to me a fairly basic expectation of the simple feature. Again, if I have to write additional code to make it fully work, it might as well be easier to implement a custom counter. What am I doing/assuming wrong?

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  • Rails: link_to method

    - by SuperString
    I have something like this: <p> <b>Tags:</b> <%if @post.tags.count > 0%> <%= @post.tags.collect {|c| (link_to c.name, c)}.join(", ")%> <%else%> Does not have any tags. <%end%> </p> Which gives me Tags: <a href="/tags/1">Java</a>, <a href="/tags/2">CSS</a> Instead of Java and CSS links. What am I missing?

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  • acts_as_tree and to_json or from_json

    - by Sohan
    Hello: Does anyone have a solution to convert an acts_as_tree model to json that includes all its nodes? I trued using :include=:children, but that only goes down to one single level. Any idea how to iterate the whole tree?

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  • Finding records when using has_many through associations

    - by winter sun
    I have two models, Worker and Project, and they are connected with has_many through association. I manage to find all the projects which are related to a specific worker by writing the following code: worker=Worker.find_by_id("some_id") worker.projects but I want the projects that I get to be only active projects (in the project model I have a status field) I tried to do something like worker.projects(:status_id=>'active') but it didn’t work for me. Can somebody tell me how I can do this?

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  • Targeting row when responding with js rails

    - by berto77
    I have an application where a user can vote on reviews. They can vote up or down. Now when there's a listing of reviews, I have a problem targeting the review the user voted on. I'm using a respon_to block in my rails controller and responding with js. So for instance, I have a vote_up method, and a vote_up.js.erb template. in that template, I have the following: var id = $('article.comment').attr('id').split('_')[1]; alert("id: " + id); $('.votecomment_' + id).find('.score').html("<%= @review2.vote_total %>"); I'm just alerting the id. The problem is that the id always returns the value of the first review found on the page. How can I pass the context aka this, to javascript, so I can figure out which review to target?

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  • image url helper for sinatra?

    - by yaya3
    I'm looking for an image url helper for sinatra that allows me to do something similar to staticmatic's, where I can shortcut to a relative path like so... =img "me.jpg" Can anybody point me in the direction to where this might be online, or where I could learn how to write one, or provide an example of one they have already written Many thanks

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  • Include only the latest/newest associated record with active record?

    - by railsnewbie
    is it possible to load only the latest associated record of an associated table? an example: class author attr_accessible :first_name, :last_name, :birthday has_many :books end class book attr_accessible :pages, :date of publication, :title belongs_to :author end Is there a way to generate a scope to load only the newest released book the author wrote? Or the book with the most pages? I know, that I could include or join all books. But I don't know if its possible to load only a specific book for each author. So that I could do a query like this: Author.authors_and_their_newest_book So that I could get these results first_name_author_1, last_name_author_1, birthday_author_1, pages_book_3, date of publication_book_3, title_book_3 first_name_author_2, last_name_author_2, birthday_author_2, pages_book_5, date of publication_book_5, title_book_5 first_name_author_3, last_name_author_3, birthday_author_3, pages_book_9, date of publication_book_9, title_book_9 ...

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  • Getting rails to execute root level file edits on system files without compromising security.

    - by voxobscuro
    I'm writing a Rails 3 application that needs to be able to trigger modifications to unix system config files. I'd like to insulate the file modifications from the consumer side by running them in a background process. I've considered writing out a temp file in rails and then copying the file with a bash script but that doesn't really insulate the system. I've also considered pulling from the database manually with a cron based script and updating the configs. But what I would really like is a component that can hook into the rails environment, read out what is needed from the database, and update the config files. This process needs to be run as root because the config files mostly live in /etc/whatever. Any suggestions? Thanks!

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  • Running Test framework as part of application

    - by VP
    Hi, I would like to know if it is possible in rails to run some test cases through my application. I mean, i want show the test results to users. So i was thinking to be able to call my tests through a controller and put the tests output in a dialog. Imagine that i'm doing an application where before to apply a rule, i want to run some validation tests. I could write methods in my rule model to do it, but i would like to use something like shoulda or any other kind of DSL where the "fixture" would be a record itself. Any tip or idea?

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