Wiki articles

Working with scenarios, with models that can receive many modifications in their rules or structures as development evolves, can create disruptions in the rescue process.

Default date format in Oracle is DD-MON-RR (25-JAN-18). With that output, we can't using date formatting.

Yii 3 and many Yii 2 package sources are contained within src directory which is convenient since you have less directories to check.

I've read many comments that it's not possible to install Yii 2 advanced on a shared hosting environment, as it has two webroots. This is partially true.

It's well known that there are Lazy Loading approach and Eager Loading approach in the relational query. But it's very important to know how the Eager Loading approach works in Yii 2. It has changed drastically from that of Yii 1.1, and there are common misunderstandings about it in the community.

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The nested set behaviour is an approach to store hierarchical data in relational databases. For example, if we have many categories for our product or items. One category can be a "parent" for other categories, means that one category consists of more than one category. The model can be drawn using a "tree" model. There are other approaches available but what we will learn in this article is speci...

Using a version control system, like Git, is nice. However, when building an extension from scratch and loading it via Composer, it adds a lot of pain in the butt steps. You have to commit your changes, update composer to pull them over, then notice there is an error, fix, commit, update. repeat.. I don't want all my baby steps under Git. Sure, I could edit my commit history, but c'mon. Just let m...

1. Create Extension in yii2.

Register an event handler at Object-Level

This wiki explains how to add calculated fields into your Yii Framework 2.0 gridview with filtering and sorting.

The problem was that all my web applications ran normally on localhost, but on server the Greek characters (or any other no-english characters) displayed with problems.

The scenario in which this wiki can be useful is when you have to send an (huge) array of model ids and perform a time consuming computation with it like linking every model to other models. The idea is to split the array into smaller arrays and perform sequential ajax requests, showing the calculation progress using a [Bootstrap Progress bar](https://www.yiiframework.com/extension/yiisoft/yii2-bo...

This article tries to describe the practical techniques of searching by a HAS_MANY relation using ActiveRecord of Yii 2.0.

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:

Yii 2.0 comes with a formatter component to format dates, numbers, and other values for international users according to their locale. This is very useful for displaying data. When working with incoming data or when using enhanced input methods like the [MaskedInput widget](https://www.yiiframework.com/doc/api/2.0/yii-widgets-maskedinp...

Normally, after clicking the delete button in gridview, the record will be deleted and the page will refresh, but the page number in query string is lost. This is not always the case we expect.