A better uri_to_assoc, and a useful new form method for it

I needed the uri_to_assoc method to be able to take an associative array that had multiple values in the array elements..

Replace the _uri_to_assoc method in system/core/URI.php

PHP Code:

function _uri_to_assoc($n = 3, $default = array(), $which = 'segment')
{
    if ($which == 'segment')
    {
        $total_segments = 'total_segments';
        $segment_array = 'segment_array';
    }
    else
    {
        $total_segments = 'total_rsegments';
        $segment_array = 'rsegment_array';
    }
    if ( ! is_numeric($n))
    {
        return $default;
    }
    if (isset($this->keyval[$n]))
    {
        return $this->keyval[$n];
    }
    if ($this->$total_segments() < $n)
    {
        if (count($default) == 0)
        {
            return array();
        }
        $retval = array();
        foreach ($default as $val)
        {
            $retval[$val] = FALSE;
        }
        return $retval;
    }
    $segments = array_slice($this->$segment_array(), ($n - 1));
    $var = array_chunk($segments, 2);
    $result = array();
    foreach ($var as $eachSet)
    {
        if (isset($eachSet[0]) and isset($eachSet[1]))
        {
            if (isset($result[$eachSet[0]]))
            {
                if (is_array($result[$eachSet[0]]))
                {
                    $result[$eachSet[0]][] = $eachSet[1];
                }
                else
                {
                    $result[$eachSet[0]] = array($result[$eachSet[0]]);
                    $result[$eachSet[0]][] = $eachSet[1];
                }
            }
            else
            {
                $result[$eachSet[0]] = $eachSet[1];
            }
        }
    }
    // Cache the array for reuse
    $this->keyval[$n] = $result;
    return $result;
} 


Example usage:

PHP Code:

$data = $this->uri->uri_to_assoc(n);

print_r($data); 


If the URI was /name/amy/name/smith/state/california/state/ohio, the result would be:

Array
(
[name] => Array
(
[0] => amy
[1] => smith
)

[state] => Array
(
[0] => california
[1] => ohio
)

)

---

And the other way around (array to URI)
Replace the assoc_to_uri method in system/core/URI.php

Code:

function assoc_to_uri($array)
{
   $temp = array();
   foreach ($array as $key => $val)
   {
       if(is_array($val))
       {
           foreach($val as $subval)
           {
               $temp[] = $key;
               $temp[] = $subval;
           }
       }
       else
       {
           $temp[] = $key;
           $temp[] = $val;
       }
   }
   return implode('/', $temp);
}

Example usage:

Code:

$arr = array('names' => array('betsy','paul'), 'states' => array('arizona','texas'));
echo $this->uri->assoc_to_uri($arr);

Result:

names/betsy/names/paul/states/arizona/states/texas

---

Also, I thought it would be useful if RIGHT from the form, you could go directly to a URI that was compatible with uri_to_assoc, so I created this jquery..
Add this jquery code wherever you want, just have it load when your web page loads

Code:

form = {
   /* URI Form method logic
    * If the forms method="URI", then all of the inputs will be processed and a
    * URI string will be constructed and appended to the end of the forms action
    * location, then redirects the browser to the constructed result.
    */
   uri_method: function () {
       $( "form[method='URI']" ).submit( function ( e ) {
           e.preventDefault();

           // If this is set to '' (empty), then the empty variable will bebignored
           var empty_values = '';

           // All values & variables will get appended to this
           var url_string = '/';

           // The url_string gets appended to the form action, then redirected
           var form_action = $( this ).attr( 'action' );

           $( this ).find( ':input' ).each( function () {
               // Skip un-named inputs (Like submit buttons)
               if ( this.name === '' )
                   return true;

               var input_name = this.name;

               // If the value is empty, use the empty_values value, or ignore it
               if ( $( this ).val() === '' ) {
                   if ( empty_values === '' ) {
                       return true;
                   } else {
                       url_string += input_name + '/' + url.encode( empty_values ) + '/';
                       return true;
                   }
               }

               var type = $( this ).attr( 'type' );

               // Process radio inputs
               if ( type == 'radio' ) {
                   $( this ).each( function () {
                       if ( $( this ).is( ':checked' ) ) {
                           url_string += input_name + '/' + url.encode( $( this ).val() ) + '/';
                       }
                   } );
               }

               // Checkbox inputs
               else if ( type == 'checkbox' ) {
                   $( this ).each( function () {
                       if ( $( this ).is( ':checked' ) ) {
                           url_string += input_name + '/' + url.encode( $( this ).val() ) + '/';
                       }
                   } );
               }

               // Multi select fields are tricky
               else if ( typeof $( this ).attr( 'multiple' ) !== 'undefined' && $( this ).attr( 'multiple' ) !== false ) {
                   if ( $( this ).val() ) {
                       $.each( $( this ).val(), function ( index, value ) {
                           url_string += input_name + '/' + url.encode( value ) + '/';
                       } );
                   }
               }

               // Any other inputs, just append them
               else {
                   url_string += input_name + '/' + url.encode( $( this ).val() ) + '/';
               }

               return true;
           } );

           // Remove any trailing slash to avoid a double shash in the result URI
           if ( form_action.substr( - 1 ) == '/' ) {
               form_action = form_action.substring( 0, form_action.length - 1 );
           }

           var target = form_action + url_string;

           //console.debug('Finished URI: ' + target);

           //window.location.replace(target);
           window.location.href = target;

       } );
   }
}

As long as the form method="URI", then it will redirect to the proper URI, this includes multiselects with multiple values and checkboxes

Might be useful to add urldecode to the _uri_to_array, that helps, and need to add + to the $config['permitted_uri_chars'] config too

Replace the _uri_to_assoc method in system/core/URI.php

That is absolutely the wrong way to do this. You never want to alter anything in the /system dir because whenever you go to upgrade CI, you will have to remember all of your custom changes and reimplement them each time.

The way this should be done is by extending the URI class and overriding the _uri_to_assoc() method with your new one.
Please see the userguide on this: http://www.codeigniter.com/user_guide/ge...core-class

Replace the _uri_to_assoc method in system/core/URI.php

That is absolutely the wrong way to do this. You never want to alter anything in the /system dir because whenever you go to upgrade CI, you will have to remember all of your custom changes and reimplement them each time.

The way this should be done is by extending the URI class and overriding the _uri_to_assoc() method with your new one.
Please see the userguide on this: http://www.codeigniter.com/user_guide/ge...core-class

Reverted my changes and created an application/core/MY_URI.php

PHP Code:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class MY_URI extends CI_URI
{
    public function __construct()
    {
        parent::__construct();
    }

    function assoc_to_uri($array)
    {
        $temp = array();
        foreach ($array as $key => $val)
        {
            if(is_array($val))
            {
                foreach($val as $subval)
                {
                    $temp[] = $key;
                    $temp[] = $subval;
                }
            }
            else
            {
                $temp[] = $key;
                $temp[] = $val;
            }
        }
        return implode('/', $temp);
    }

    protected function _uri_to_assoc($n = 3, $default = array(), $which = 'segment')
    {
        if ($which == 'segment')
        {
            $total_segments = 'total_segments';
            $segment_array = 'segment_array';
        }
        else
        {
            $total_segments = 'total_rsegments';
            $segment_array = 'rsegment_array';
        }
        if ( ! is_numeric($n))
        {
            return $default;
        }
        if (isset($this->keyval[$n]))
        {
            return $this->keyval[$n];
        }
        if ($this->$total_segments() < $n)
        {
            if (count($default) == 0)
            {
                return array();
            }
            $retval = array();
            foreach ($default as $val)
            {
                $retval[$val] = FALSE;
            }
            return $retval;
        }
        $segments = array_slice($this->$segment_array(), ($n - 1));
        $var = array_chunk($segments, 2);
        $result = array();
        foreach ($var as $eachSet)
        {
            if (isset($eachSet[0]) and isset($eachSet[1]))
            {
                if (isset($result[$eachSet[0]]))
                {
                    if (is_array($result[$eachSet[0]]))
                    {
                        $result[$eachSet[0]][] = urldecode($eachSet[1]);
                    }
                    else
                    {
                        $result[$eachSet[0]] = array(urldecode($result[$eachSet[0]]));
                        $result[$eachSet[0]][] = urldecode($eachSet[1]);
                    }
                }
                else
                {
                    $result[$eachSet[0]] = urldecode($eachSet[1]);
                }
            }
        }
        // Cache the array for reuse
        $this->keyval[$n] = $result;
        return $result;
    }
} 


That works