Note: This section is under development.
Data provider abstracts data set via [[yiidataDataProviderInterface]] and handles pagination and sorting.It can be used by grids, lists and other data widgets.
Running Both WordPress and Yii2; Github: How to revert multiple commits; Tip on Passing Variable to Raw Custom Grid View Row; Yii2 Active Record Hidden Active Form Field or How to Hide an Active Form Field. What is Yii 2.0? Yii is a high performance, component-based PHP framework for rapidly developing modern Web applications. The name Yii can be considered as the acronym for Yes It Is! Yii 2 inherits the main spirit behind Yii for being a simple, fast and highly extensible PHP framework. Alternatively, you can enable Yii2 module in suite configuration file and run codecept init upgrade4 This module was bundled with Codeception 2 and 3, but since version 4 it is necessary to install it separately. Some modules are bundled with PHAR files. Yii is a pure OOP (Object-Oriented Programming) framework. Hence, it requires a basic knowledge of OOP. The Yii framework also uses the latest features of PHP, like traits and namespaces. The major requirements for Yii2 are PHP 5.4+ and a web server.
In Yii there are three built-in data providers: [[yiidataActiveDataProvider]], [[yiidataArrayDataProvider]] and[[yiidataSqlDataProvider]].
Active data provider
ActiveDataProvider
provides data by performing DB queries using [[yiidbQuery]] and [[yiidbActiveQuery]].The following is an example of using it to provide ActiveRecord instances:
![Yii2 rbac Yii2 rbac](/uploads/1/3/7/9/137946029/532785905.png)
And the following example shows how to use ActiveDataProvider without ActiveRecord:
Array data provider
ArrayDataProvider implements a data provider based on a data array.
The [[yiidataArrayDataProvider::$allModels]] property contains all data models that may be sorted and/or paginated.ArrayDataProvider will provide the data after sorting and/or pagination.You may configure the [[yiidataArrayDataProvider::$sort]] and [[yiidataArrayDataProvider::$pagination]] properties tocustomize the sorting and pagination behaviors.
Elements in the [[yiidataArrayDataProvider::$allModels]] array may be either objects (e.g. model objects)or associative arrays (e.g. query results of DAO).Make sure to set the [[yiidataArrayDataProvider::$key]] property to the name of the field that uniquelyidentifies a data record or false if you do not have such a field.
Compared to
ActiveDataProvider
, ArrayDataProvider
could be less efficientbecause it needs to have [[yiidataArrayDataProvider::$allModels]] ready.ArrayDataProvider may be used in the following way:
Yii2 Rbac
Note: if you want to use the sorting feature, you must configure the [[sort]] propertyso that the provider knows which columns can be sorted.
Yii2
SQL data provider
SqlDataProvider implements a data provider based on a plain SQL statement. It provides data in terms of arrays, eachrepresenting a row of query result.
Like other data providers, SqlDataProvider also supports sorting and pagination. It does so by modifying the given[[yiidataSqlDataProvider::$sql]] statement with 'ORDER BY' and 'LIMIT' clauses. You may configure the[[yiidataSqlDataProvider::$sort]] and [[yiidataSqlDataProvider::$pagination]] properties to customize sortingand pagination behaviors.
SqlDataProvider
may be used in the following way:Note: if you want to use the pagination feature, you must configure the [[yiidataSqlDataProvider::$totalCount]]property to be the total number of rows (without pagination). And if you want to use the sorting feature,you must configure the [[yiidataSqlDataProvider::$sort]] property so that the provider knows which columns canbe sorted.
Implementing your own custom data provider
Yii2 Migration
TBD