I believe the `u` helper method is what you&#39;re looking for:

    &lt;%=u &quot;URL ENCODE &lt;p&gt;ME&lt;/p&gt;&quot; %&gt;


I can&#39;t seem to find the documentation for that method, but if I find it in the near future I&#39;ll be sure to put a link in here.

Edit:  You can find the documentation for this method [here](http://rdoc.info/stdlib/erb/1.8.7/ERB/Util:url_encode).

If you want to do it without ERB, you can use the following:

    Rack::Utils.escape(&#39;http://example.com&#39;)
    #=&gt; &quot;http%3A%2F%2Fexample.com&quot;


This worked better for me than the `Rack::Utils.escape`:

    URI::escape(&#39;http://example.com/?param=Hello World&#39;)

Because it replaced the spaces with `%20` instead of `+`

`ERB::Util.html_escape`, which is aliased to `h` and `ERB::Util.url_encode`, which is aliased to `u` .

http://ruby-doc.org/stdlib-1.9.3/libdoc/erb/rdoc/ERB/Util.html

The method names seem to have changed since Sam Soffes answer, but the aliases haven&#39;t.


I know it only allows the class to set it, but what is the point?

How do I solve the problem of having readonly ids?

Say I have a person class:

    public class Person
        {
            public string Name { get;  set; }
            public int Id { get; private set; }
            public int Age { get; set; }
        }

And this is in an `Entities.dll`, used by a GUI, BL and DAL.

The GUI calls the BL:

       List&lt;Person&gt; p =  BL.PeopleBL.GetPeople();

For the sake of the example calls the DAL:

    ...
    while(dr.read())
    {
        returnPersonList.add( new Person{ Age=dr.GetInt32(1), Id=dr.GetInt32(0), Name=dr.GetString(2)})
    }
    ...
of course I cannot do that cause Id is a private set;
What is the proper way to do this?

How can I let the BL/Dal set the Id, but not on the GUI?

Or is this not even the proper use of a private set?

***
I just wanted to add that this is your typical DB app, where the pk is the Id and should not be changed( only by the BL/DAL)
***

Properties private set;

In my work I have with great results used approximate string matching algorithms such as Damerau–Levenshtein distance to make my code less vulnerable to spelling mistakes.

Now I have a need to match strings against simple regular expressions such `TV Schedule for \d\d (Jan|Feb|Mar|...)`. This means that the string `TV Schedule for 10 Jan` should return 0 while `T Schedule for 10. Jan` should return 2.

This could be done by generating all strings in the regex (in this case 100x12) and find the best match, but that doesn&#39;t seam practical.

Do you have any ideas how to do this effectively?

Fuzzy Regular Expressions

Is there an equivalent to PHP&#39;s urlencode in Ruby on Rails 2.3.5? (It encodes a string to be used in a query part of a URL)
I googled it but all the answers seem to date back to before 2006 and seems dates.
[This is what I found][1]. It seems a bit abnormal to call `CGI::escape` in a view.

Is there an equivalent helper function?

Thanks!


  [1]: http://ruby-doc.org/core/classes/CGI.html#M000532

url encode equivalent in ruby on rails

Is there an equivalent to PHP's urlencode in Ruby on Rails 2.3.5? (It encodes a string to be used in a query part of a URL)
I googled it but all the answers seem to date back to before 2006 and seems dates.
<a href="http://ruby-doc.org/core/classes/CGI.html#M000532" target="_blank" rel="noopener noreferrer">This is what I found</a>. It seems a bit abnormal to call <code>CGI::escape</code> in a view.
Is there an equivalent helper function?
Thanks!

    $el = array_shift($instance-&gt;find(..))

The above code somehow reports the strict standards warning, but this will not:

    function get_arr(){
    	return array(1, 2);
    }
    $el = array_shift(get_arr());

So when will it report the warning anyway?


Error message &quot;Strict standards: Only variables should be passed by reference&quot;

I am looking for the best way to go about testing the following static method (specifically using a Doctrine Model):

    class Model_User extends Doctrine_Record
    {
        public static function create($userData)
        {
            $newUser = new self();
            $newUser-&gt;fromArray($userData);
            $newUser-&gt;save();
        }
    }

Ideally, I would use a mock object to ensure that `fromArray` (with the supplied user data) and `save` were called, but that&#39;s not possible as the method is static.

Any suggestions?

PHPUnit Mock Objects and Static Methods

Having a brain freeze over a fairly trivial problem. If I start with an array like this:

    $my_array = array(
                      &#39;monkey&#39;  =&gt; array(...),
                      &#39;giraffe&#39; =&gt; array(...),
                      &#39;lion&#39;    =&gt; array(...)
    );

...and new elements might get added with different keys but always an array value. Now I can be sure the first element is always going to have the key &#39;monkey&#39; but I can&#39;t be sure of any of the other keys.

When I&#39;ve finished filling the array I want to move the known element &#39;monkey&#39; to the end of the array without disturbing the order of the other elements. What is the most efficient way to do this?

Every way I can think of seems a bit clunky and I feel like I&#39;m missing something obvious.

How do I move an array element with a known key to the end of an array in PHP?

Sorry if this is duplicate,I would think it would be but couldn&#39;t find anything.

I have a flex application that I am posting data back to a php/mysql server via IE. I haven&#39;t run into any problems yet, but knowing this ahead of time might save me a bunch of frustration and work. Is there a size limit to posting data via http? 

This article says no:
http://www.netlobo.com/ie_form_submit.html

This discussion says yes:
http://bytes.com/topic/php/answers/538226-what-maximum-limit-using-post-method

And it all goes back and forth what I&#39;m able to find online. So **please** limit answers to personally tested/verified numbers.

I am wanting to post back an XML string that can be quite large (say up to 5mb).

If it makes any difference: browser will always be IE (our product requires it), post is coming from and httpService in flex, web server is php, DB is mySql. 

What is the size limit of a post request?

I&#39;m trying to replace multiple spaces with a single space. When I use `ereg_replace`, I get an error about it being deprecated.

    ereg_replace(&quot;[ \t\n\r]+&quot;, &quot; &quot;, $string);

Is there an identical replacement for it. I need to replace multiple `&quot; &quot;` white spaces and multiple `nbsp` white spaces with a single white space.

php Replacing multiple spaces with a single space

I&#39;m trying to create a new environment (build) for using it with hudson.

I&#39;m doing this because I didn&#39;t want to mix up my test databases with hudson test database.


How to create a new environment in Ruby on Rails?

I have a rails application running over Postgres.

I have two servers: one for testing and the other for production.

Very often I need to clone the production DB on the test server.

The command I&#39;m runnig via Vlad is:

    rake RAILS_ENV=&#39;test_server&#39; db:drop db:create

The problem I&#39;m having is that I receive the following error:

    ActiveRecord::StatementInvalid: PGError: ERROR: database &lt;database_name&gt; is being accessed by other users DROP DATABASE IF EXISTS &lt;database_name&gt;

This happens if someone has accessed the application via web recently (postgres keeps a &quot;session&quot; opened)

Is there any way that I can terminate the sessions on the postgres DB?

Thank you.

### Edit

I can delete the database using phppgadmin&#39;s interface but not with the rake task.

How can I replicate phppgadmin&#39;s drop with a rake task?


Rails + Postgres drop error: database is being accessed by other users

I need to query comments made in one day. The field is part of the standard timestamps, is `created_at`. The selected date is coming from a `date_select`.

How can I use `ActiveRecord` to do that?

I need something like:

    &quot;SELECT * FROM comments WHERE created_at BETWEEN &#39;2010-02-03 00:00:00&#39; AND &#39;2010-02-03 23:59:59&#39;&quot;

Rails ActiveRecord date between

Is it possible to have multiple `has_many :through` relationships that pass through each other in Rails?  I received the suggestion to do so as a solution for another question I posted, but have been unable to get it to work.

Friends are a **cyclic association** through a join table.  The goal is to create a `has_many :through` for `friends_comments`, so I can take a `User` and do something like `user.friends_comments` to get all comments made by his friends in a single query.

    class User
      has_many :friendships
      has_many :friends, 
               :through =&gt; :friendships,
               :conditions =&gt; &quot;status = #{Friendship::FULL}&quot;
      has_many :comments
      has_many :friends_comments, :through =&gt; :friends, :source =&gt; :comments
    end

    class Friendship &lt; ActiveRecord::Base
      belongs_to :user
      belongs_to :friend, :class_name =&gt; &quot;User&quot;, :foreign_key =&gt; &quot;friend_id&quot;
    end

This looks great, and makes sense, but isn&#39;t working for me.  This is the error I&#39;m getting in relevant part when I try to access a user&#39;s friends_comments:  
`ERROR:  column users.user_id does not exist  
: SELECT &quot;comments&quot;.* FROM &quot;comments&quot;  INNER JOIN &quot;users&quot; ON &quot;comments&quot;.user_id = &quot;users&quot;.id    WHERE ((&quot;users&quot;.user_id = 1) AND ((status = 2)))`

When I just enter user.friends, which works, this is the query it executes:  
`: SELECT &quot;users&quot;.* FROM &quot;users&quot; INNER JOIN &quot;friendships&quot; ON &quot;users&quot;.id = &quot;friendships&quot;.friend_id WHERE ((&quot;friendships&quot;.user_id = 1) AND ((status = 2)))`

So it seems like it&#39;s entirely forgetting about the original `has_many` through friendship relationship, and then is inappropriately trying to use the User class as a join table.

Am I doing something wrong, or is this simply not possible?

Ruby-on-Rails: Multiple has_many :through possible?

Where would I go about placing partial files shared by more than one model?
I have a page called `crop.html.erb` that is used for one model - `Photo`.
Now I would like to use it for another model called `User` as well.

I *could* copy and paste the code but that&#39;s not very DRY, so I figured I would move it into a partial.

Since it&#39;s shared between two models - *where would I place that partial*?

Thanks!

Where to put partials shared by the whole application in Rails?

To append to an existing string this is what I am doing.

    s = &#39;hello&#39;
    s.gsub!(/$/, &#39; world&#39;);

Is there a better way to append to an existing string.

Before someone suggests following answer lemme show that this one does not work

    s = &#39;hello&#39;
    s.object_id
    s = s + &#39; world&#39;
    s.object_id 

In the above case object_id will be different for two cases.

Appending to an existing string

How to convert the string `&quot;User&quot;` to `User`?

How to convert a string to a constant in Ruby?

What is the fastest, most optimized, one-liner way to get an array of the directories (excluding files) in Ruby?  

How about including files?

One-liner to recursively list directories in Ruby?

I&#39;m looking to start using a key/value store for some side projects (mostly as a learning experience), but so many have popped up in the recent past that I&#39;ve got no idea where to begin.  Just listing from memory, I can think of:

1. CouchDB
2. MongoDB
3. Riak
4. Redis
5. Tokyo Cabinet
6. Berkeley DB
7. Cassandra
8. MemcacheDB

And I&#39;m sure that there are more out there that have slipped through my search efforts.  With all the information out there, it&#39;s hard to find solid comparisons between all of the competitors.  My criteria and questions are:

1. **(Most Important) Which do you recommend, and _why_?**
2. Which one is the fastest?
3. Which one is the most stable?
4. Which one is the easiest to set up and install?
5. Which ones have bindings for Python and/or Ruby?

**Edit:**  
So far it looks like Redis is the best solution, but that&#39;s only because I&#39;ve gotten one solid response (from ardsrk).  I&#39;m looking for more answers like his, because they point me in the direction of useful, quantitative information.  Which Key-Value store do **you** use, and **why**?

**Edit 2:**  
If anyone has experience with CouchDB, Riak, or MongoDB, I&#39;d love to hear your experiences with them (and even more so if you can offer a comparative analysis of several of them)

Which key/value store is the most promising/stable?

Am I missing something in the Array documentation?  I have an array which contains up to one object satisfying a certain criterion.  I&#39;d like to efficiently find that object.  The best idea I have from the docs is this:

    candidates = my_array.select { |e| e.satisfies_condition? }
    found_it = candidates.first if !candidates.empty?

But I am unsatisfied for two reasons:

1. That `select` made me traverse the whole array, even though we could have bailed after the first hit.
2. I needed a line of code (with a condition) to flatten the candidates.  

Both operations are wasteful with foreknowledge that there&#39;s 0 or 1 satisfying objects.

What I&#39;d like is something like:

    array.find_first(block)

which returns nil or the first object for which the block evaluates to true, ending the traversal at that object.

Must I write this myself?  All those other great methods in Array make me think it&#39;s there and I&#39;m just not seeing it.


Content Type	Original Author	Original Content on Stackoverflow
Question	Yuval Karmi	View Question on Stackoverflow
Solution 1 - Php	Mike Trpcic	View Answer on Stackoverflow
Solution 2 - Php	Sam Soffes	View Answer on Stackoverflow
Solution 3 - Php	yorch	View Answer on Stackoverflow
Solution 4 - Php	webdevguy	View Answer on Stackoverflow

url encode equivalent in ruby on rails

Php Problem Overview

Php Solutions

Solution 1 - Php

Solution 2 - Php

Solution 3 - Php

Solution 4 - Php

Fuzzy Regular Expressions

Properties private set;

Attributions