You may simply use `params` as a Hash of all passed parameters (both GET and POST).

For example:

    params.each do |key,value|
      Rails.logger.warn &quot;Param #{key}: #{value}&quot;
    end

Update: Note, what `params` include parameters of categories:

 - Path parameters (bound in routes)
 - Query parameters (GET)
 - Request parameters (POST)

If you want to access parameters of certain category only you may use:

    request.path_parameters

    request.query_parameters # or
    request.GET

    request.request_parameters # or
    request.POST

All methods return [HashWithIndifferentAccess][1], so you may access them by string or symbol key.

  [1]: http://api.rubyonrails.org/classes/ActiveSupport/HashWithIndifferentAccess.html

Instead of doing this:

    res = HttpResponse(&quot;Unauthorized&quot;)
    res.status_code = 401
    return res


Is there a way to do it without typing it every time?

How do I return a 401 Unauthorized in Django?

What would be the best way of selecting an item in a QT combo box out of a predefined list of `enum` based unique values.

In the past I have become accustomed to .NET&#39;s style of selection where the item can be selected by setting the selected property to the item&#39;s value you wish to select:

    cboExample.SelectedValue = 2;

Is there anyway to do this with QT based on the item&#39;s data, if the data is a C++ enumeration?


QComboBox - set selected item based on the item&#39;s data

Usually, we use like:  

     params[:a] #to get a specific parameter&#39;s value

But how to get all the parameters the way we do in PHP? 

      $_GET or $_POST

Rails: How to get all parameters from url?

Usually, we use like:
<pre><code class="hljs language-ini"> params[:a] #to get a specific parameter's value
</code></pre>
But how to get all the parameters the way we do in PHP?
<pre><code class="hljs language-bash"> $_GET or $_POST
</code></pre>

After adding migration files in the `db/migrate` folder and running `rake db:migrate`, I want get back to the previous step, I think using `VERSION=n` is the right way to do that, but I don&#39;t know the correct value of n to use. Is there any command to check the current n value?

It would be great if anyone could provide full instructions on how to use `rake db:migrate`.

How to rollback just one step using rake db:migrate

I was wondering if someone could explain how to use [will_paginate][1] on an array of objects?

For example, on my site I have an opinion section where users can rate the opinions. Here&#39;s a method I wrote to gather the users who have rated the opinion:

    def agree_list
      list = OpinionRating.find_all_by_opinion_id(params[:id])
      @agree_list = []
      list.each do |r|
        user = Profile.find(r.profile_id)
        @agree_list &lt;&lt; user
      end
    end

Thank you


  [1]: https://github.com/mislav/will_paginate

Ruby on Rails will_paginate an array

I have a date variable, stored as a String in the &#39;YYYY-mm-dd&#39; format. What is the best way to check, if that date has not already passed?

Ruby on Rails: the best way to compare two dates?

I want to switch between rails 2.3.10 as the &quot;active&quot; gem for my OS, so that I can invoke it at the command line.

Is it possible to do this? I&#39;m not using rvm. Maybe it&#39;s time to start.

I tried `gem install rails --version=2.3.10`, but that just makes sure that version of the gem is installed, it doesn&#39;t put it in `/usr/bin/rails`.

(I do already use bundler for my apps -- but haven&#39;t needed any precise control over gems at the OS level until now)

How do I &quot;activate&quot; a different version of a particular gem?

How do I do a `script/generate migration` to create a join table for a `has_and_belongs_to_many` relationship?

The application runs on Rails 2.3.2, but I also have Rails 3.0.3 installed.

Rails migration for has_and_belongs_to_many join table

I have a Ruby on Rails application that was created using:

    rails new old_name -d mysql

Now I want to change the application name to be `new_name`.

Just changing the application folder name will not be enough, because the database name, for example, also has to be changed (from `old_name_development` to `new_name_development`). I wonder if there are other places in the automatically generated files that needs changing.

Is there any built in command for changing the application name ?

How to change a Ruby on Rails application name?

I&#39;m using Rails 3.0.3 and have data for my &quot;categories&quot; table already in the database, but want to create a seed file from it. Is there any rake task that will generate the seeds.rb format for me from this table?

Create seed file from data already in the database

What is the rails way of implementing a min max validator in Rails 3 ?

I have a model, with min_age and max_age attributes.

Age can be in the range of 0..100, but I want also to validate crossing values, I mean that max is greather than or equal to min

    {:min_age =&gt; 0, :max_age =&gt; 0} =&gt; true
    {:min_age =&gt; 0, :max_age =&gt; 1} =&gt; true
    {:min_age =&gt; 1, :max_age =&gt; 0} =&gt; false # max &lt; min
    {:min_age =&gt; 1, :max_age =&gt; 101} =&gt; false # out of 0..100 range

How to implement min/max validator in Rails 3?

I am needing to change a column type from text to longtext in my Rails script, but can&#39;t find anything on how to do this.

Has anyone ran across this?

Thanks!
Dennis

Rails 3 Migration with longtext

I used to build Ruby on Rails apps with MySQL.

MongoDB currently become more and more famous and I am now starting to give it a try.

The problem is, I don&#39;t know the underlying theory of how MongoDB is working (am using mongoid gem if it matter)

So I would like to have a comparison on the performance between using MySQL+ActiveRecord and model generated by mongoid gem, could anyone help me to figure it out?

Content Type	Original Author	Original Content on Stackoverflow
Question	mlzboy	View Question on Stackoverflow
Solution 1 - Ruby on-Rails	alno	View Answer on Stackoverflow

Rails: How to get all parameters from url?

Ruby on-Rails Problem Overview

Ruby on-Rails Solutions

Solution 1 - Ruby on-Rails

QComboBox - set selected item based on the item's data

How do I return a 401 Unauthorized in Django?

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