I found this online about MiniTest: http://www.mikeperham.com/2012/09/25/minitest-ruby-1-9s-test-framework/

Turns out, you are right. It is about randomizing the execution order of tests. You can explicitly use them like this:

    rake TESTOPTS=&quot;--seed=1261&quot;

(according to the above link).

The answer from [MrDanA](https://stackoverflow.com/a/6441173/665240) is correct. This solution also works and is slightly shorter and easier to remember.

    SEED=20290 rake test

Is there any established noSQL database solution to be used for developing native mobile applications (Android and/or iOs)?

NoSQL for mobile apps?

Can anyone tell me the difference between the `KeyDown` event, the `KeyPress` event and the `KeyUp ` event? I checked the msdn site and it does not explain it much. 

Can anyone tell me in simple logical sense when each of the event occurs? I feel that all the above event occurs when a key is pressed. So what is the exact difference between them.

Difference between the KeyDown Event, KeyPress Event and KeyUp Event in Visual Studio

When running unit and functional tests using rake, on a rails application, I notice that there is a seed value which is specified on the command line: **--seed x**

    $ rake test
    (in /code/blah)
    Loaded suite /../ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake/rake_test_loader
    Started
    .
    Finished in 0.12345 seconds.
    
    1 tests, 1 assertions, 0 failures, 0 errors, 0 skips
    
    Test run options: --seed 20290

I assume it is possible to use this value in the tests, but I can&#39;t figure out how.
I&#39;ve tried Google, Rails Guides et al. but can&#39;t seem to find the answer.

EDIT:

Could this seed value be the option that is used by Minitest to randomize the execution order of tests?


Using the seed value from rake in unit and functional tests

When running unit and functional tests using rake, on a rails application, I notice that there is a seed value which is specified on the command line: --seed x
<pre><code class="hljs language-bash">$ rake test
(in /code/blah)
Loaded suite /../ruby-1.9.2-p180/gems/rake-0.8.7/lib/rake/rake_test_loader
Started
.
Finished in 0.12345 seconds.

1 tests, 1 assertions, 0 failures, 0 errors, 0 skips

Test run options: --seed 20290
</code></pre>
I assume it is possible to use this value in the tests, but I can't figure out how.
I've tried Google, Rails Guides et al. but can't seem to find the answer.
EDIT:
Could this seed value be the option that is used by Minitest to randomize the execution order of tests?

I am building a Rails 3 app with blogging, commenting, and other functionality that require the users to input text. 

My question is whether it is a better idea to use a Javascript rich text editor or not. What would be the pros and cons. If it is a recommended approach:

1. Which editors are best?
2. How do I use them in my Rails forms?

thanks in advance,

Steve

Rails 3 and Rich text editor

Very simple question here - if migrations can get slow and cumbersome as an app gets more complex and if we have the much cleaner `rake db:schema:load` to call instead, why do migrations exist at all?

If the answer to the above is that migrations are used for version control (a stepwise record of changes to the database), then as an app gets more complex and `rake db:schema:load` is used more instead, do they continue to maintain their primary function?

---

### Caution:

From the answers to this question: `rake db:schema:load` &lt;b&gt;will delete data&lt;/b&gt; on a production server so be careful when using it.

rake db:schema:load vs. migrations

After significant troubleshooting, I figured out that I needed to run `rake spec` once (I can abort with control-c) before I can run rspec directly (e.g. on a subset of our specs). We are running Rails 3.0.7 and RSpec 2.5.0.

Clearly, rake is running some important database setup tasks / code (we have custom code in the root level rails Rakefile and possibly other places).

**How can I run the rake test database setup tasks / code without running `rake spec`?**

In addition to being able to run rspec on a subset of files, I am using [specjour][1] to spread our specs across multiple cores (haven&#39;t had success with spreading them across the LAN yet), but I see the same behavior as for running rspec directly: I need to run `rake spec` on each test database (assuming two cores) before specjour works:

    rake spec TEST_ENV_NUMBER=1
    control-c (after tests start)
    rake spec TEST_ENV_NUMBER=2
    control-c (after tests start)
    specjour

Note: my config/database.yml has this entry for test (as is common for the parallel testing gems):

    test:
      adapter: postgresql
      encoding: unicode
      database: test&lt;%=ENV[&#39;TEST_ENV_NUMBER&#39;]%&gt;
      username: user
      password:

[parallel_tests][2] seems to set up its databases correctly, but many of our specs fail.

I should also mention that running `specjour prepare` causes Postgres to log errors that it can&#39;t find the databases, but it creates them (without tables). On a subsequent run, no errors are logged, but also no tables are created. It is possible that my whole issue is simply a bug in `prepare`, so I reported it on github.

I think that I can run arbitrary code on each specjour test database by setting `Specjour::Configuration.prepare` in .specjour/hooks.rb, so if there&#39;s any rake tasks or other code that I need to run, it may work there.

  [1]: https://github.com/sandro/specjour
  [2]: https://github.com/grosser/parallel_tests

How do I prepare test database(s) for Rails rspec tests without running rake spec?

Is there any way to detect if `#content_for` was actually applied to a `yield` scope in Rails?

A classic example being something like:

    &lt;title&gt;&lt;%= yield :page_title %&gt;&lt;/title&gt;

If a template doesn&#39;t set that with

    &lt;% content_for :page_title, &quot;Something here&quot; %&gt;

Is there a way to have the layout put something else there instead?

I tried defining it with `#content_for` in the layout itself, but this just causes the text to be doubled-up.  I also tried:

    &lt;%= (yield :page_title) or default_page_title %&gt;

Where `#default_page_title` is a view helper.

This just left the block completely empty.

Rails 3: yield/content_for with some default value?

I have a model Family with a method `location` which merges the `location` outputs of other objects, Members. (Members are associated with families, but that&#39;s not important here.) 

For example, given

* member_1 has `location` == &#39;San Diego (traveling, returns 15 May)&#39;
* member_2 has `location` == &#39;San Diego&#39;

Family.location might return &#39;San Diego (member_1 traveling, returns 15 May)&#39; The specifics are unimportant.

To simplify the testing of Family.location, I want to stub Member.location. However, I need it to return two different (specified) values as in the example above. Ideally, these would be based on an attribute of `member`, but simply returning different values in a sequence would be OK. Is there a way to do this in RSpec?

It&#39;s possible to override the Member.location method within each test example, such as

    it &quot;when residence is the same&quot; do 
      class Member
        def location
          return {:residence=&gt;&#39;Home&#39;, :work=&gt;&#39;his_work&#39;} if self.male?
          return {:residence=&gt;&#39;Home&#39;, :work=&gt;&#39;her_work&#39;}
        end
      end
      @family.location[:residence].should == &#39;Home&#39;
    end

but I doubt this is good practice. In any case, when RSpec is running a series of examples it doesn&#39;t restore the original class, so this kind of override &quot;poisons&quot; subsequent examples.

So, is there a way to have a stubbed method return different, specified values on each call?

Can RSpec stubbed method return different values in sequence?

I&#39;m trying to run rails project,
I get 

    Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
If I do: &quot;bundle install&quot;

but
I&#39;m getting 

    You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7

while doing

    rake db:migrate




You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7

I&#39;m having a really frustrating issue: [Rake][1] is being dumb.

Here&#39;s how the problem comes about:

    $ rails new test_app
    $ rails generate scaffold new_scaffold field1:string field2:text

Both of those work just fine, but then when I do this,

    $ rake db:migrate

I get the following error.

    (in /home/mikhail/test_app)
    rake aborted!
    uninitialized constant Rake::DSL
    /usr/lib/ruby/1.9.1/rake.rb:2482:in `const_missing&#39;
    /usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:8:in `&lt;class:TaskLib&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:6:in `&lt;module:Rake&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:3:in `&lt;top (required)&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/rdoctask.rb:20:in `require&#39;
    /usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/rdoctask.rb:20:in `&lt;top (required)&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks/documentation.rake:1:in `require&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks/documentation.rake:1:in `&lt;top (required)&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:15:in `load&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:15:in `block in &lt;top (required)&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:6:in `each&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:6:in `&lt;top (required)&gt;&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:214:in `require&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:214:in `initialize_tasks&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:139:in `load_tasks&#39;
    /usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing&#39;
    /home/mikhail/test_app/Rakefile:7:in `&lt;top (required)&gt;&#39;
    /usr/lib/ruby/1.9.1/rake.rb:2373:in `load&#39;
    /usr/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile&#39;
    /usr/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile&#39;
    /usr/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling&#39;
    /usr/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile&#39;
    /usr/lib/ruby/1.9.1/rake.rb:1991:in `run&#39;
    /usr/bin/rake:31:in `&lt;main&gt;&#39;

I&#39;ve looked about the Internet for similar/same errors, and people have had them. Just no one ever seems to solve the problem!

How do I fix this problem?

  [1]: http://en.wikipedia.org/wiki/Rake_%28software%29


Ruby on Rails and Rake problems: uninitialized constant Rake::DSL

When I try to do `bundler update` I get this error:

    .rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in
    `to_specs&#39;: Could not find bundler (&gt;= 0) amongst
    [rake-0.8.7, rake-0.8.7, rubygems-update-1.8.4] (Gem::LoadError)

I&#39;m new to Ruby, can someone tell me what would cause this? Rake 0.8.7 is installed.


Rails: &quot;Could not find bundler&quot; (2.2.11) required by Gemfile.lock. (Gem::GemNotFoundException)

I am getting errors similar to the ones [in][1] [these][2] [questions][3], except mine are occuring on [Heroku][4]:

    2011-05-30T09:03:29+00:00 heroku[worker.1]: Starting process with command: `rake jobs:work`
    2011-05-30T09:03:30+00:00 app[worker.1]: (in /app)
    2011-05-30T09:03:30+00:00 heroku[worker.1]: State changed from starting to up
    2011-05-30T09:03:33+00:00 app[worker.1]: rake aborted!
    2011-05-30T09:03:33+00:00 app[worker.1]: uninitialized constant Rake::DSL
    2011-05-30T09:03:33+00:00 app[worker.1]: /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:8:in `&lt;class:TaskLib&gt;&#39;

The answer in those questions seems to be to specify `gem &#39;rake&#39;, &#39;0.8.7&#39;` because the 0.9 version causes the problem.

When I try to add `gem &#39;rake&#39;, &#39;0.8.7&#39;` to my gemfile and push to Heroku I get this error:

    Unresolved dependencies detected; Installing...
    You have modified your Gemfile in development but did not check
    the resulting snapshot (Gemfile.lock) into version control
    
    You have added to the Gemfile:
    * rake (= 0.8.7)
    FAILED: http://devcenter.heroku.com/articles/bundler
    ! Heroku push rejected, failed to install gems via Bundler
    error: hooks/pre-receive exited with error code 1
    To git@heroku.com:my_app.git
    ! [remote rejected] master -&gt; master (pre-receive hook declined)
    error: failed to push some refs to &#39;git@heroku.com:my_app.git&#39;

My gemfile normally works fine on Heroku. What should I do?

  [1]: https://stackoverflow.com/questions/6091964/delayed-job-queue-not-being-processed-on-heroku
  [2]: https://stackoverflow.com/questions/6085610/rails-rake-problems-uninitialized-constant-rakedsl
  [3]: https://stackoverflow.com/questions/5287121/undefined-method-task-using-rake-0-9-0/5290331#5290331
  [4]: http://www.heroku.com

How to fix the uninitialized constant Rake::DSL problem on Heroku?

I am working through the Ruby on Rails 3 tutorial book and typed the following on the command line:

    rake db:migrate

which produced the following warning.

    WARNING: Global access to Rake DSL methods is deprecated.  Please Include
        ...  Rake::DSL into classes and modules which use the Rake DSL methods.
    
    WARNING: DSL method DemoApp::Application#task called at /Users/imac/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.7/lib/rails/application.rb:215:in `initialize_tasks&#39;

I am not sure what to do about it or how to work with it. I don&#39;t know any other command for Rake.

How can I fix this problem?


Content Type	Original Author	Original Content on Stackoverflow
Question	VirtualStaticVoid	View Question on Stackoverflow
Solution 1 - Ruby on-Rails	MrDanA	View Answer on Stackoverflow
Solution 2 - Ruby on-Rails	Carl Zulauf	View Answer on Stackoverflow

Using the seed value from rake in unit and functional tests

Ruby on-Rails Problem Overview

Ruby on-Rails Solutions

Solution 1 - Ruby on-Rails

Solution 2 - Ruby on-Rails

Difference between the KeyDown Event, KeyPress Event and KeyUp Event in Visual Studio

NoSQL for mobile apps?

Attributions