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Here are all wiki articles from "Understanding" series by Yii wiki contributors:

A big problem I've hit with the Yii-Bootstrap extension is that all AJAX requests are initializing Bootstrap because of preload. This is a huge waste of resources, especially when using AJAX-based file uploaders that split the file into chunks. Large file uploads using that method could be initializing bootstrap hundreds of times.

In this little tip, I will help you to cut Yii size for about half

Almost all Yii applications use CMenu at the top of each page to show options available to the user, and many include drop-down components to allow more fine-grained selection.

For time to time i have models with constants (basicly status constants) which i use in diferent places and if these constant changes, i have to change mentions of constant in code elsewhere.

Many people want to use downloaded extensions in their own way. As for me most of the extensions require me to correct Yii::import() instructions inside their source code. All these extensions are directory dependent. To avoid the situation described above, I suggest to implement pseudo-anonymous aliases:

How many of us wonder how we can upgrade the website without hurting the operation of our WebApp?

Un aspecto del diseño de interfaces de usuario tiene que ver con la coherencia del diseño y uso de colores entre los distintos componentes de interfaz de usuario utilizados.

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

This is an incipient implementation of application-driven database with Yii.