Implement ImageHelper about yii2 HOT 23 CLOSED

Some references http://phpthumb.gxdlabs.com/

Would be great also to implement methods to display placeholders

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i like Kohana image module

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Vote against this. There are many independent libraries for it. I believe that the most powerful of them is Imagine.

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I vote for this, as most image extensions for Yii is utterly crap. This is such a common requirement. Yii1 has CUploadedFile (haven't had the time to browse Yii2 code yet :p ), why not an ImageHelper?
I second the image placeholder functionality.

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I think should work similar to the email interface described in #31. Provide an interface for common operations that my be done by a replaceable backend.

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@jacmoe, @cebe

Did you guys see Imagine? Which makes sense to do another extension for image processing, especially considering that it is also a need to support?

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There are hundreds of image extensions..
And dozens of Yii extensions which does something image related. Most of them are badly written and/or out of date/not maintained.
I will look at Imagine. :)
However, I don't think the goal is to compete with it.
You can do much just by using GD.

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@alari has done an Imagine component for Yii:
https://github.com/alari/yii-imagine
And an Images-Holder module using it:
https://github.com/alari/yii-imagesHolder

However.. not sure if this is Yii2 core material.
It looks great, though. Even though Imagine seems to be only maintained at the moment, not actively developed.

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@creocoder will definitively look at some before starting implementation on anything.

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Consider adding functionality massive caching. Something like this I think: resize image, add some filter, add watermark. Result will be cached and for some time when you want to show the image with the filter, watermark, etc ... image will go from cache.

Global setting for how long save in cache, when delete, where cache.

I use this: http://phpthumb.sourceforge.net/ (do the work but there is some problems).

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@cebe I think the desire to disappear as soon as you look Imagine. ;) This can be used without any extensions.

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Nowadays web applications use lots of images in cloud services. I don't know if ImageHelper is the correct place for it but, somewhere, Amazon storage, Rackspace Cloud Files, etc, somewhere, we should support assets cloud storage

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I totally agree with @luislobo but I think the ImageHelper is for other purposes. A REST client assets cloud storage is another thing, and Guzzle does a pretty good job.

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If we could come to a consensus about minimum viable features/methods I would be willing to take up this task.

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@crisu83 wrote an image "manager" (though basically a helper/manipulator/whatever) for Yii 1.1, based on Imagine, see: https://github.com/Crisu83/yii-imagemanager

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@rawtaz thanks for mentioning my work. You should definitely take a look at my image manager extension. I think it's a bit of a overkill implementation to be added to Yii itself, but you might find the manipulation part interesting.

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follow it.

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@callmez there's a button for following at the very bottom of the screen ;)

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i think we just need simple bridge to imagine lib, in yiiext there is a one simple extensions that acts this way, i think it is what needed.

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My extension has that simple bridge too, check out the ImagineFilter class for example.

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@crisu83 yes, i saw your extensions, but i think it is overkill, dont need that too much, almost 90% of image-handlings is simple avatars, text etc. so that 1 file in yiiext is enough i think. anyway we should keep code clean and not build yet another (yii/symphony components) ;)

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Of course it's overkill. I already mentioned that but the actual API for Imagine and the filters could easily be separated and simplified if necessary.

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I Love Imagine too....... its really great to see in yii2.

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