Wiki articles in category Tips

When you develop a widget, you could need one image that is in the assets folder, you can use it simply within a css. You can load a css or javascript script doing this:

Yii::app()->getClientScript()->registerCssFile($filename);

There are some very advanced grids in the Yii2 community, specifically Kartik's amazing gridview extensions but they all designed for interactive screen use.

Guys,

Rights is one of user interface for Yii's Role Base Access Control extension. It is one of most downloaded extensions in Yii's Web.

There are cases that model validators should be depended by controller/action and you couldn't manipulate on the model class or using scenarios in easy way

/*

    Get class constants by token.
    If you set constants with same prefix, like:
	MY_STATUS_1
	MY_STATUS_2
	MY_STATUS_3

This article is called extended guide is because there is already a security guide in the Yii tutorial security section. but that guide is not complete in the sense that it does not rise the developers' attention to some other commonly happening attacks: SQL injection and magic URL, which can be major vulnerabilities in you...

What would you do if you want/need to have a different than the main database connection in an module's models?

So, you have installed a brand new Yii 2 app (basic) or (advanced). Here are a few tips for Apache web server users to get things running more secure and better with your yii2 app.

If you're using a lot of bower and npm assets with Yii 2.0 you might encounter long running composer update tasks.

I wanted to implement a widget that could refresh itself through Ajax without refreshing the whole page. CGridView and CListView are excellent examples of such widgets.

Sometimes the App needs a nicer look & feel, so its necessary to organize the assets for this and Yii can help a lot to make it easy. In this article I provide tips for handling multiple "Designs". I use these three features:

First param in CActiveDataProvider could be a string with model name or instance of class. So, you may use CActiveRecord::cache() for cache, but you need set third param to 2, because you should cache 2 queries: counting and get data.

Often, when writing widgets or editing Yii code, it is unclear whether or not the code is following the MVC pattern.

The yii2-field-range extension enables you to easily setup ActiveField range fields with Bootstrap styling. You basically can setup two attributes joined together like a single field with combined validation error block.

Backoffice Grid Views often list information like Posts for a blog while showing at the same time linked information like the User who wrote that post. For more efficiency, it is appropriate that the User is displayed as a link to the User detail page.

find doubletts by db fields. in this example i will check doublets for 3 tabelfields (col1,col2,col3). so i will get a subquery with the condition, select and grouping of the tablefields. the having with COUNT() > 1 means: find all records more then one result.

$model=new MyModel('search');
$model->unsetAttributes();

A little hint of how to create a progress bar inside the column of the grid, using the 'bootstrap' extension.

In this simple example I'll demonstrate how to extend CActiveForm class to overload some drawing functions to achieve some commonly used fixes in forms.

The colon

Here is overloaded version of CActiveForm.labelEx that adds colon (:) at the end of text of label with respecting CHtml::$afterRequiredLabel and CHtml::$beforeRequiredLabel