Is there a way to remove a number from an attibute array in an update? For example, if I want to update all of an alchy's booze stashes if he runs out of a particular type of booze:
Alchy has_many :stashes
Stash.available_booze_types = [] (filled with booze.ids)
Booze is also a class
#booze.id = 7
if #booze.is_all_gone
#alchy.stashes.update(available_booze_types: "remove #booze.id")
end
update: #booze.id may or may not be present in the available_booze_types array
... so if #booze.id was in any of the Alchy.stash instances (in the available_booze_types attribute array), it would be removed.
I think you can do what you want in the following way:
if #booze.is_all_gone
#alchy.stashes.each do |stash|
stash.available_booze_types.delete(#booze.id)
end
end
However, it looks to me like there are better ways to do what you are trying to do. Rails gives you something like that array by using relations. Also, the data in the array will be lost if you reset the app (if as I understand available_booze_types is an attribute which is not stored in a database). If your application is correctly set up (an stash has many boozes), an scope like the following in Stash class seems to me like the correct approach:
scope :available_boozes, -> { joins(:boozes).where("number > ?", 0) }
You can use it in the following way:
#alchy.stashes.available_boozes
which would only return the ones that are available.
I'm building a file repository where each file has a database entry associated with it. In that database, I include the sha1 hash value for the file. Also, for security reasons, I rename each file with a specific pattern, so I can't check the filename directly via the form's filename value.
I'm trying to prevent people from uploading the same file twice, so I want to create a form validator that takes the file being uploaded and checks the hash of the file against all the values in the database. If the hash is already in the database--and thus the file already exists--the validator should return false. How access the file from inside the validator class so I can calculate the hash?
Your question is very badly asked. So I will not dig into the logic of it.Sorry Here is a very simple example of how you can create a Custom Validation Class.
The most important thing you need to remember is two methods.
isValid(): Returns either true or false through a logic
getMessages(): Returns errors messages in case of invalid.
Here is a basic example of comparing whether a user is admin or not.
class CustomValidate_UserAdmin extends Zend_Validate_Abstract
{
$admin = "username"; //I am using a static value this time
protected $_messageTemplates = array(
self::FLOAT => "'%value%' is not an admin"
);
public function isValid($value)
{
$this->_setValue($value);
if($this -> admin == $value) {
return true;
}
}
}
Now use it
$element->addValidator(new CustomValidate_UserAdmin('username'));
This is a very simple example to understand. You can replace it with your logic with a lot of ease I think.
Updates
Add validation like this...
$element->addValidator(new CustomValidate_Hash('file/location', $hashvaluettocompare));
Now in your validation class
function isValid($location, $value) {
if(hash_file("md5", $location)==$value) return true;
}
The validator you're looking for already exists it is part of Zend_File_Transfer which is used by Zend_Form_Element_File. It accepts an array to validate against.
another option would be to do the check in the controller, because you have to hash the file doing it as form validator presents difficulties.
So hash the file in the controller prior to calling ->receive() and use the Zend_Validate_Db_NoRecordExists. Might be just as easy to do this with a method in your model. You could also use this validator when creating a method that hashes the file.
The Zend_File_Transfer_Adapter_Abstract api has a method getHash(), I believe you can call getHash() and validate against Db_NoRecordExists.
Good Luck!
I want to access two databases in Play Scala with anorm and Magic[T], (one is H2 and another is PostgreSQL). I just don't know how to config it...
I noticed that we can set another database connection in conf/application.conf
db_other.url=jdbc:mysql://localhost/test
db_other.driver=com.mysql.jdbc.Driver
db_other.user=root
db_other.pass=
However, how can I use it with Magic?
(I read the source code of Magic but don't understand it... my am a freshman of Scala)
Anyhow, if multiple database access is impossible with Magic[T] , I wish to do it with anorm, then how can I config it?
var sqlQuery = SQL( //I guess some config params should be set here, but how?
"""
select * from Country
"""
)
In play.api.db.DB it appears you can pass in a string of the name you defined in application.conf.
Then use one of the methods specified here: http://www.playframework.org/documentation/2.0/ScalaDatabase
# play.api.db.DB.class
def withConnection[A](name : scala.Predef.String)(block : scala.Function1[java.sql.Connection, A])(implicit app : play.api.Application) : A = { /* compiled code */ }
I have been using PyroCMS and CI for quite some time, and truly love it.
I am extending a DB module that will allow an admin user to manage a DB without having to use something like phpMyAdmin.
The only thing I have been able to get working however is Browsing a table's field values (i.e 'SELECT * FROM 'table_name').
I want to include more functions, but I can't seem to get dbforge to work properly. I know it is loaded because dbforge is used to uninstall modules. I also get no error when calling functions from it.
Here is an example of my code from the controller (dbforge has already been loaded).
public function drop($table_name)
{
$table_name = $this->uri->segment(4);
$this->dbforge->drop_table($table_name);
redirect('admin/database/tables');
}
Lets say the function gets called from this url:
.../admin/database/drop/table_name
It appears to work... but instead it just redirects to the tables overview.
Is there something I am missing? Shouldn't [$this->dbforge->drop_table($table_name);] always drop a table (given $table_name is valid)?
EDIT
As a work around, I was able to use:
public function drop($table_name)
{
$table_name = $this->uri->segment(4);
//$this->dbforge->drop_table($table_name);
$this->db->query("DROP TABLE ".$table_name);
redirect('admin/database/tables');
return TRUE;
}
I really would like to use DB forge, however...
I think you might be getting a little confused by the site prefixes in PyroCMS 1.3.x.
By default all installations of Community and Professional will have default_ as a prefix for all tables in the first site. If you have Professional you can add new sites and the site reference will be whatever_ instead of default_
This prefix is accounted for by dbforge, so when you want to delete default_blog you would just delete:
/admin/database/drop/blog
Also, why are you accepting the $table_name as an argument then overriding it with a uri segment?
Also, why are you accepting the $table_name as an argument then overriding it with a uri segment?
See what I did there? xD
public function drop($table_name)
{
$this->dbforge->drop_table($table_name);
redirect('admin/database/tables');
}
I'm researching hours and hours, but I could not find any clear, efficient way to make it :/
I have a codeigniter base website in English and I have to add a Polish language now. What is the best way to make my site in 2 language depending visitor selection?
is there any way to create array files for each language and call them in view files depends on Session from lang selection? I don't wanna use database.
Appreciate helps! I'm running out of deadline :/ thanks!!
Have you seen CodeIgniter's Language library?
The Language Class provides functions
to retrieve language files and lines
of text for purposes of internationalization.
In your CodeIgniter system folder you'll
find one called language containing sets
of language files. You can create your
own language files as needed in order
to display error and other messages in
other languages.
Language files are typically stored in
your system/language directory. Alternately
you can create a folder called language
inside your application folder and store
them there. CodeIgniter will look first
in your application/language directory.
If the directory does not exist or the
specified language is not located there
CI will instead look in your global
system/language folder.
In your case...
you need to create a polish_lang.php and english_lang.php inside application/language/polish
then create your keys inside that file (e.g. $lang['hello'] = "Witaj";
then load it in your controller like $this->lang->load('polish_lang', 'polish');
then fetch the line like $this->lang->line('hello'); Just store the return value of this function in a variable so you can use it in your view.
Repeat the steps for the english language and all other languages you need.
Also to add the language to the session, I would define some constants for each language, then make sure you have the session library autoloaded in config/autoload.php, or you load it whenever you need it. Add the users desired language to the session:
$this->session->set_userdata('language', ENGLISH);
Then you can grab it anytime like this:
$language = $this->session->userdata('language');
In the controller add following lines when you make the cunstructor
i.e, after
parent::Controller();
add below lines
$this->load->helper('lang_translate');
$this->lang->load('nl_site', 'nl'); // ('filename', 'directory')
create helper file lang_translate_helper.php with following function and put it in directory system\application\helpers
function label($label, $obj)
{
$return = $obj->lang->line($label);
if($return)
echo $return;
else
echo $label;
}
for each of the language, create a directory with language abbrevation like en, nl, fr, etc., under
system\application\languages
create language file in above (respective) directory which will contain $lang array holding pairs label=>language_value as given below
nl_site_lang.php
$lang['welcome'] = 'Welkom';
$lang['hello word'] = 'worde Witaj';
en_site_lang.php
$lang['welcome'] = 'Welcome';
$lang['hello word'] = 'Hello Word';
you can store multiple files for same language with differently as per the requirement
e.g, if you want separate language file for managing backend (administrator section) you can use it in controller as $this->lang->load('nl_admin', 'nl');
nl_admin_lang.php
$lang['welcome'] = 'Welkom';
$lang['hello word'] = 'worde Witaj';
and finally
to print the label in desired language, access labels as below in view
label('welcome', $this);
OR
label('hello word', $this);
note the space in hello & word you can use it like this way as well :)
whene there is no lable defined in the language file, it will simply print it what you passed to the function label.
I second Randell's answer.
However, one could always integrate a GeoIP such as http://www.maxmind.com/app/php
or http://www.ipinfodb.com/. Then you can save the results with the codeigniter session class.
If you want to use the ipinfodb.com api You can add the ip2locationlite.class.php file to your codeigniter application library folder and then create a model function to do whatever geoip logic you need for your application, such as:
function geolocate()
{
$ipinfodb = new ipinfodb;
$ipinfodb->setKey('API KEY');
//Get errors and locations
$locations = $ipinfodb->getGeoLocation($this->input->ip_address());
$errors = $ipinfodb->getError();
//Set geolocation cookie
if(empty($errors))
{
foreach ($locations as $field => $val):
if($field === 'CountryCode')
{
$place = $val;
}
endforeach;
}
return $place;
}
For easier use CI have updated this so you can just use
$this->load->helper('language');
and to translate text
lang('language line');
and if you want to warp it inside label then use optional parameter
lang('language line', 'element id');
This will output
// becomes <label for="form_item_id">language_key</label>
For good reading
http://ellislab.com/codeigniter/user-guide/helpers/language_helper.html
I've used Wiredesignz's MY_Language class with great success.
I've just published it on github, as I can't seem to find a trace of it anywhere.
https://github.com/meigwilym/CI_Language
My only changes are to rename the class to CI_Lang, in accordance with the new v2 changes.
When managing the actual files, things can get out of sync pretty easily unless you're really vigilant. So we've launched a (beta) free service called String which allows you to keep track of your language files easily, and collaborate with translators.
You can either import existing language files (in PHP array, PHP Define, ini, po or .strings formats) or create your own sections from scratch and add content directly through the system.
String is totally free so please check it out and tell us what you think.
It's actually built on Codeigniter too! Check out the beta at http://mygengo.com/string
Follow this https://github.com/EllisLab/CodeIgniter/wiki/CodeIgniter-2.1-internationalization-i18n
its simple and clear, also check out the document # http://ellislab.com/codeigniter/user-guide/libraries/language.html
its way simpler than
I am using such code in config.php:
$lang = 'ru'; // this language will be used if there is no any lang information from useragent (for example, from command line, wget, etc...
if (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) $lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'],0,2);
$tmp_value = $_COOKIE['language'];
if (!empty($tmp_value)) $lang = $tmp_value;
switch ($lang)
{
case 'ru':
$config['language'] = 'russian';
setlocale(LC_ALL,'ru_RU.UTF-8');
break;
case 'uk':
$config['language'] = 'ukrainian';
setlocale(LC_ALL,'uk_UA.UTF-8');
break;
case 'foo':
$config['language'] = 'foo';
setlocale(LC_ALL,'foo_FOO.UTF-8');
break;
default:
$config['language'] = 'english';
setlocale(LC_ALL,'en_US.UTF-8');
break;
}
.... and then i'm using usualy internal mechanizm of CI
o, almost forget! in views i using buttons, which seting cookie 'language' with language, prefered by user.
So, first this code try to detect "preffered language" setted in user`s useragent (browser). Then code try to read cookie 'language'. And finaly - switch sets language for CI-application
you can make a function like this
function translateTo($language, $word) {
define('defaultLang','english');
if (isset($lang[$language][$word]) == FALSE)
return $lang[$language][$word];
else
return $lang[defaultLang][$word];
}
Friend, don't worry, if you have any application installed built in codeigniter and you wanna add some language pack just follow these steps:
1. Add language files in folder application/language/arabic (i add arabic lang in sma2 built in ci)
2. Go to the file named setting.php in application/modules/settings/views/setting.php. Here you find the array
<?php /*
$lang = array (
'english' => 'English',
'arabic' => 'Arabic', // i add this here
'spanish' => 'Español'
Now save and run the application. It's worked fine.