how to validate image dimension before insert into database in laravel - validation

Question

Iam new in laravel .im trying to validate dimensions of image .i want dimensions minimum(width=100,height=50).iam using validation code in controller.php is here
'galimg'=>'required|max:200kb|DimensionMin(300,300)|Mimes:jpeg,jpg,gif,png
,pneg'
but DimensionMin(300,300) is not work....i think custom validation rule is possible ..but i dont know how to use it ?and where ? this is my controller.php code
public function getgallery()
{
$validate=Validator::make(Input::all(),array(
'galname'=>'required|max:20',
'galimg'=>'required|max:400kb|Dimensionmin(300,300)|Mimes:jpeg,jpg,gif,png
,pneg'));
if($validate->fails())
{ return Redirect::route('getgallery')
->withErrors($validate)->withInput(); }
else
{ $max_image = 3;
if(ForumGallery::all()->count() < $max_image)
{ $file=Input::file('galimg');
$filename=$file->getClientOriginalName();
$file->move('uploads',$filename);
ForumGallery::create(['galname'=>Input::get('galname'),
'galimg'=>$filename]);
return Redirect::route('addgallery');
}
else
{return Redirect::route('gallery')
->with('success','Max Image Upload Reached!');
} }}

Answer 1

you can use this code
function getImgSize(imgSrc) {
var newImg = new Image();
newImg.onload = function() {
var height = newImg.height;
var width = newImg.width;
alert ('The image size is '+width+'*'+height);
}
newImg.src = imgSrc; // this must be done AFTER setting onload
}`
Here you get Image height and width compare it with your required dimention.
refer http://tiku.io/questions/4060613/how-to-validate-image-size-and-dimensions-before-saving-image-in-database

Answer 2

$v = Validator::make($data, array(
'email' => 'required|email',
'games' => 'required|numeric',
));
Assume you have some other fields to validate as well. Put them in $v.
Now you need to add custom validation rules.
$v->sometimes('galimg', 'required', function($input)
{
//psudo code, here validate your image
if($input.length >= 300) return false;
return true;
});
Put image-related manipulation into the function.
Hope this helps.
$validate=Validator::make(Input::all(),array(
'galname'=>'required|max:20',
'galimg'=>'required|max:400kb|Mimes:jpeg,jpg,gif,png
,pneg'));
$validate->sometimes('galimg', 'required', function($input)
{
//psudo code, here validate your image
return imagesx($input) > 300 && imagesy($input) > 300;
});

Answer 3

You can use this awesome library for detecting your image dimension here
afte done installing you can use it in your controller like this one :
$validate=Validator::make(Input::all(),array(
'galname'=>'required|max:20',
'galimg'=>'required|mimes:jpeg,jpg,gif,png,pneg|image_size:1200,800'));
the rules should be 1200 wide and 800 tall or width = 1200 and height = 800
Note : the dimension is in pixels
hope it helps.