CodeIgniter Forums

uploading and preview image with ajax

Posted by: El Forum - 05-29-2008, 10:02 AM - Replies (3)

[eluser]nuttynibbles[/eluser]
hello, im doing a function to upload photo. i would like to use ajax for user to preview the photo before submitting the form. so basically i want the user to click onto preview button where it will use ajax to preview the img to the user by saving the img file in a temp folder.

here is my code for the html:

Code:
&lt;form name="frmregister" method="post" action="http://url/codeigniter/upload/do_upload" enctype="multipart/form-data"&gt;

&lt;input type="hidden" name="post" value="1" /&gt;        

Upload a photo: &lt;input type="file" name="file" id="file" /&gt;&lt;input type="submit"  name="preview" value="preview"&gt; 

&lt;input class="button" type="submit" name="upload" value="upload" /&gt;

&lt;/form&gt;

i found a ajax file on CI forum. it looks like this:

Code:
var ajaxPost = function() {

    // Get request object

    function getRequest() {

        if (window.XMLHttpRequest)

            return new XMLHttpRequest();

        else if (window.ActiveXObject)

            return new ActiveXObject("Microsoft.XMLHTTP");

        else

            alert('Ajax not supported');

        return null;

    }

    // Basic callback - could add error handler if you wanted

    function handleChange(req, callback) {

        if(req.readyState == 4) {

            if (req.status == 200) {

                if (callback)

                    callback(req.responseText);

            }

            else {

                alert("Ajax request failed.");

            }

        }

    }

    // Create query string from json object

    function handleParams(params) {

        if(!params) {

            return null;

        }

        else {

            var encoded = "";

            for (var field in params) {

                fieldval = params[field];

                encoded += field + '=' + fieldval + '&';

            }

            return encoded;

        }

    }

    // Combine it all in one pretty interface

    return function(uri, callback, data) {

        var request = getRequest();

        request.open('POST', uri, true);

        request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

        request.onreadystatechange = function() { handleChange(request, callback) };

        request.send(handleParams(data));

        return request;

    };

}();

can someone show me how to go about doing this. tks

turn off global xss on login page

Posted by: El Forum - 05-29-2008, 09:31 AM - Replies (4)

[eluser]Unknown[/eluser]
Okay, so this is what the problem is... I have global xss turned on so it sanitizes _post and what not.

However, I have a lot of users who use special characters in their password for security requirements so CI is converting them and making the password invalid.

How can I leave the global xss on but not sanitize the login page _post vars with its xss_clean function?

I thinking I need to do some kind of hook to turn it off specifically for that controller but just wanted to see what you guys thought.

Thanks

Solved

Posted by: El Forum - 05-29-2008, 06:35 AM - Replies (2)

	[eluser]JasonS[/eluser] Solved

help with a custom field_data()

Posted by: El Forum - 05-29-2008, 05:05 AM - Replies (4)

[eluser]dexter21[/eluser]
hi , iam trying to get all fields names and values from a table . i've made a custom query that return an array of elements.if i print $campo->valor, and $campo->nombre i obtain the results but if i call to function in a view it said that campo->nombre and campo->valor dont exisxt;

basicly i use following function as:

Code:
$sql = "select * from news";

$sql  .= " where nCodnoticia = 1";

registro=$this->db->query2($sql,$this->tabla);

$registro->campos[0]->type ->ok it print it

$registro->campos[0]->valor ->it give me an error, dont exist

any could help me plz ?

following function:

Code:
function query2($sql,$tabla)

    {

        $query = $this->query($sql);

        if ($query->num_rows() > 0)

        {

            $objeto = null;

            $objeto->campos = $query->field_data();

            $valores = $query->row();

            foreach($objeto->campos as $campo)

            {    

               echo $campo->name."<br>";

               echo $campo->type."<br>";

               echo $campo->max_length."<br>";

               echo $campo->primary_key."<br>";

                foreach($valores as $nombre=>$valor)

                {

                    if($nombre == $campo->name)

                    {    

                           $campo->valor = $valor;

                           $campo->nombre = $this->traduceCampo($tabla,$campo->name);

                            echo "campo->valor:".$campo->valor."<br>";

                            echo "campo->nombre:".$campo->nombre."<br>";

                           break;  

                     }

                 }

           }

        }

        else

        {

            $objeto = null;

            $objeto->campos = $query->field_data();

            foreach($objeto->campos as $campo)

            {

                   $campo->valor = null;

                   $campo->nombre = $campo->name;

            }

        }

        //echo var_dump($objeto);       

       return $objeto;

    }

Multiple Databases Best Practice

Posted by: El Forum - 05-29-2008, 04:55 AM - Replies (4)

[eluser]matthewr[/eluser]
Hi! What's the best practice for connecting to multiple databases and using Active Record to access them both. I'll have 1 primary database that my app will access a lot, and one secondary database that my app will check out probably only during logins. I need two databases because the second database will be accessed by multiple apps. Could someone show me the best practice for doing this? I just want to do it right.

Thanks
Matthew

2 or 3 fields of search

Posted by: El Forum - 05-29-2008, 04:16 AM - Replies (1)

	[eluser]JUANITO26[/eluser] Very Very Very good and impressive widget ! It is possible to activate 2 or 3 fields of search? (Quick Search) Example ISO+NAME+NUMBER CODE. If it is not much to ask, the form to do it Thanks!

.htaccess problem

Posted by: El Forum - 05-29-2008, 04:08 AM - Replies (5)

[eluser]Mitja[/eluser]

Code:
RewriteEngine on

RewriteRule ^$ /index.php [L]

RewriteCond $1 !^(index\.php|img|css|js|video_files|robots\.txt|favicon\.ico)

RewriteRule ^(.*)$ /index.php/$1 [L]

i still need to write index.php in url adress. It is not recognized automatically. Anyone know why?

XML-RPC Empty Return Structs

Posted by: El Forum - 05-29-2008, 04:07 AM - No Replies

[eluser]Elliot Haughin[/eluser]
Under 1.6.2, when using the XML-RPC Client library, an error occurs when handling 'empty' struct's.

libraries/Xmlrpc.php Line 1326:

Code:
switch($this->xmlrpcTypes[$typ])

{

    case 3:

        // struct

        $rs .= "<struct>\n";

        reset($val);

        while(list($key2, $val2) = each($val))

        {

            $rs .= "<member>\n<name>{$key2}</name>\n";

            $rs .= $this->serializeval($val2);

            $rs .= "</member>\n";

        }

        $rs .= '</struct>';

    break;

Produces:

Quote:A PHP Error was encountered

Severity: Warning

Message: reset() [function.reset]: Passed variable is not an array or object

Filename: libraries/Xmlrpc.php

Line Number: 1331
A PHP Error was encountered

Severity: Warning

Message: Variable passed to each() is not an array or object

Filename: libraries/Xmlrpc.php

Line Number: 1332

The library doesn't take into account that the struct could be empty...
should be:

Code:
switch($this->xmlrpcTypes[$typ])

{

    case 3:

        // struct

        $rs .= "<struct>\n";

        if ( !empty($val) )

        {

            reset($val);

            while(list($key2, $val2) = each($val))

            {

                $rs .= "<member>\n<name>{$key2}</name>\n";

                $rs .= $this->serializeval($val2);

                $rs .= "</member>\n";

            }

        }

        $rs .= '</struct>';

    break;

Maybe this isn't a bug... but just thought you might want to check it out.

form_dropdown() always returns 0

Posted by: El Forum - 05-29-2008, 02:57 AM - Replies (6)

[eluser]EthanSP[/eluser]
Why is it that this form_dropdown() always returns 0?

form_dropdown($fby,$fy_values,$fy_default) // in view

where,

$fby is $data['fby'] = array('name'=>'birth_year'); // in model

$fy_values is $data['fy_values'] = $datelib->show_years(); // in model

function show_years() {
for ($x=date('Y')-150; $x<=date('Y'); $x++)
$years[] = $x;
return $years;
}

$fy_default is $data['fy_default'] = array_search(date('Y'),$data['fy_values']); // in model

In the controller:

if($this->input->post('mysubmit')) {
$this->mdl_demographics->save();
}

In the model:

$db_array = array('last_name' => $this->input->post('birth_year'));

Result in db:

last_name = 0

Why?

Active Record Postgres stored procedure not working with 1 parameter

Posted by: El Forum - 05-29-2008, 02:19 AM - No Replies

[eluser]redguy[/eluser]
I have several plpgsql stored procedures in my database:
1) add_hit (integer, integer, integer)
2) add_score (integer, integer)
3) add_start (integer)

I call function 1 successfully with:

Code:
$result = $this->db->get("add_hit($sid,$qid,$aid)")->row_array();

The following SQL is generated:

Code:
SELECT * FROM add_hit(1,4,11)

I call function 2 successfully with:

Code:
$result = $this->db->get("add_score($sid,$qid)")->row_array();

The following SQL is generated:

Code:
SELECT * FROM add_score(1,34)

But when I call function 3 like that:

Code:
$result = $this->db->get("add_start($sid)")->row_array();

The following SQL is generated:

Code:
SELECT * FROM add_start("1")

It seems that CI adds quotes around the parameter. And while PHP allows a String to become an integer, Postgres doesn't. So I get an error. I solved this by running a manual query like:

Code:
$sql = "SELECT * FROM add_start($sid)";

$result = $this->db->query($sql)->row_array();

Which does the job.

I can't use the call_function function with Postgres, so I'm wondering if this is an AR bug?

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