How to show or hide yii2 gridview action button conditionally

In Yii2 Gridview normally to display the action button we have the following chunk of code

$columns = [ ['class' => 'yii\grid\SerialColumn'], 'name', 'description:ntext', 'status', [ 'class' => 'yii\grid\ActionColumn', ] ];

The output you see as below:

Now you have a scenario, to show the edit button only when the “Zone status” is active. So you have to add the additional line

$columns = [ ['class' => 'yii\grid\SerialColumn'], 'name', 'description:ntext', 'status', [ 'class' => 'yii\grid\ActionColumn', 'contentOptions' => [], 'header'=>'Actions', 'template' => '{view} {update} {delete}', 'visibleButtons'=>[ 'delete'=> function($model){ return $model->zone_status!='deleted'; }, 'view'=> function($model){ return $model->zone_status!='active'; }, ] ], ];

Now let me explain what changes were done to display the view button , when zone_status is active.

So the “visibleButtons” control the display of the action button based on the value returned by

function($model){ return $model->zone_status!='active'; }

If the condition hold true, view button will be displayed else not.

Next Level:

You can take this to next level. i.e. if you want to control the button style and the default url for each action, you can do it as below:

$columns = [ ['class' => 'yii\grid\SerialColumn'], 'name', 'description:ntext', 'status', [ 'class' => 'yii\grid\ActionColumn', 'contentOptions' => [], 'header'=>'Actions', 'buttons' => [ 'view' => function ($url,$model,$key) { return Html::a('<button>Details</button>', Url::home()."zone/view?id=".$model->id); }, 'delete' => function ($url,$model,$key) { if($model->zone_status != 'deleted') { return Html::a('<button class="bk-custom-btn">Delete</button>', Url::home()."delete?id=".$model->id); } }, 'update' => function ($url,$model,$key) { $url = ['zone/update?id='.$model->id]; return Html::a('<button class="bk-edit-btn">Edit</button>',$url); }, ], 'template' => '{view} {update} {delete}', 'visibleButtons'=>[ 'delete'=> function($model){ return $model->zone_status!='deleted'; }, 'view'=> function($model){ return $model->zone_status=='active'; }, ] ], ];

The final output as below:

export mysql database – mysql dump

When you have access to the command line and you have the export large database, you will not be able to export from phpmyadmin.

Hence mysql provide you handy method to export the database from the command line. Below are various options, you can use while exporting the database.

——databases – This allows you to specify the databases that you want to backup. You can also specify certain tables that you want to backup. If you want to do a full backup of all of the databases, then leave out this option
——add-drop-database – This will insert a DROP DATABASE statement before each CREATE DATABASE statement. This is useful if you need to import the data to an existing MySQL instance where you want to overwrite the existing data. You can also use this to import your backup onto a new MySQL instance, and it will create the databases and tables for you.
——triggers – this will include the triggers for each dumped table
——routines – this will include the stored routines (procedures and functions) from the dumped databases
——events – this will include any events from the dumped databases
——set-gtid-purged=OFF – since I am using replication on this database (it is the master), I like to include this in case I want to create a new slave using the data that I have dumped. This option enables control over global transaction identifiers (GTID) information written to the dump file, by indicating whether to add a SET @@global.gtid_purged statement to the output.
——user – The MySQL user name you want to use
——password – Again, you can add the actual value of the password (ex. ——password=mypassword), but it is less secure than typing in the password manually. This is useful for when you want to put the backup in a script, in cron or in Windows Task Scheduler.
——single-transaction – Since I am using InnoDB tables, I will want to use this option.
——no-create-db – don’t create database
——no-create-info – don’t create table structure
——extended-insert=FALSE => Each row as seperate insert querry

Syntax : mysqldump ——triggers ——routines ——databases databasename ——user=root ——password > database_export_file_name.sql
Example : mysqldump ——no-create-db ——triggers ——extended-insert=FALSE ——routines ——databases mydatabase ——user=root ——password > mydatabase.sql

Sometime you have to type the absolute path for mysqldump executable path to execute the above command for example.

Example : /var/mysqlFolder/bin/mysqldump ——no-create-db ——triggers ——extended-insert=FALSE ——routines ——databases mydatabase ——user=root ——password > mydatabase.sql

More option you can explore on Maria DB website

How to change the php version for the console

Many a times when you view the php version in the browser by displaying the phpinfo() information and the php version that is displayed when you see by typing the command “php -v” in the console or command prompt, You will notice that there is difference in the two.

So how to set the php version same as the version that you see in your phpinfo( ) function in the browser.

Step 1: Find the path to the executable of the php from the phpinfo() displayed in the browser. For example, if you have ampps installed you will find the path as “/Applications/AMPPS/php-7.1/bin/php”.

Incase you have multiple version of php configured then choose the binary/executable path to the required version of php.

For example for php5, the path would be “/Applications/AMPPS/php5/bin/php”.

Step 2: Setting the php version for the console

Once you have decided upon the required php version for your console application execute the below command.

alias php=’/Applications/AMPPS/php-7.1/bin/php’ => This will set your php version to 7.1 for you console command line instruction.

Similarly for php5

alias php=’/Applications/AMPPS/php5/bin/php’

To make this work,You need to double check the location of the required php executable path, then only it will work. If you don’t have the required version installed. you could installed it as per your need and the operating system you are using.

Yii2 how to set custom value for checkbox in gridview widget

In Yii2, while you use gridview widget to display your table data, for performing any operation on the record by selecting the checkbox, gridview assign the value of the first column retrieved from your the result set.

But you need to set some different value to the checkbox, so to do that you can use the below code

GridView::widget([
	'dataProvider' => $dataProvider,
	'filterModel' => $searchModel,
	'columns' => [
		['class' => 'yii\grid\SerialColumn'],
		[
			'class' => '\kartik\grid\CheckboxColumn',
			'checkboxOptions' => function($model, $key, $index, $widget) {
				return ["value" => $model['id']]; // this can be substituted with any column value of your result data
			},
		],
		'name',
		['class' => 'yii\grid\ActionColumn'],
	],
]);

instead of the default one

GridView::widget([
	'dataProvider' => $dataProvider,
	'filterModel' => $searchModel,
	'columns' => [
		['class' => 'yii\grid\SerialColumn'],
		[
			'class' => '\kartik\grid\CheckboxColumn',
			'mergeHeader'=>false
		],
		'name',
		['class' => 'yii\grid\ActionColumn'],
	],
]);

How do I gunzip all files .gz recursively in a target directory?

The solution is very simple

gunzip -r *

This will extract all .gz file in the respective directory and sub directory and remove the .gz files as well.

how to set public permission to image uploaded on s3 aws in laravel 5.5

First set your s3 bucket configuration in your .env file as below.

S3_AWS_KEY=AKIAIDTXXXHUR7ABCDEF
S3_AWS_SECRET=2XTTy0q8xxdaddffrtsfsdfdfgfhvcdsfsf
S3_AWS_REGION=us-east-2
S3_AWS_BUCKET=BUCKET_NAME

In your controller file add the following code to set the public property to the uploaded image.

if (request()->hasFile(‘image_field_name_inyour_form’)) {

$folderPath = ‘profile/thumbnailfolder/’; // Set the folder path where you want to upload on s3 bucket
$imageName = time().rand(0,999999).’.’.request()->file(‘main_image’)->getClientOriginalExtension(); // Set name for the uploaded image with extension
$imageObj = request()->file(‘main_image’); // This will retrieve the uploaded images attributes. in short the file objects.
$uploadResponse = Storage::disk(‘s3’)->put($folderPath.$imageName, file_get_contents($imageObj), ‘public’); // here if you dont set the “public” attributes, when you access the file in your browser it will display access permission denied error.
$imageNameToStoreInYourDbOrCode = $imageName;

}

Hope you like the code. Please write back for any queries.

How to wrap data column in Gridview widget in yii or yii2 framework

The column which you want to wrap should be added the property called “contentOptions” where you can apply the css property to suits your needs and requirements as below.

[
‘attribute’ => ‘column name’,
‘format’ => ‘html’,
‘noWrap’ => false,
‘mergeHeader’=>true,
‘contentOptions’ => [‘style’ => ‘width: 50%; overflow: scroll;word-wrap: break-word;white-space:pre-line;’],
‘value’=>function ($data) {
return $data[‘question’];
},
],

How to get raw sql query in yii or yii2 framework

If you have used the query builder in yii 2.0.8 framework then to get the raw sql generated use the below statement.

$query->andFilterWhere([‘like’, ‘username’, $this->username])
->andFilterWhere([‘like’, ’email_id’, $this->email])
->andFilterWhere([‘registration_date’ => $this->register_date]);
// This is echo the raw query generated
var_dump($query->createCommand()->getRawSql());

how to get sql query with data binding from facade DB::table in laravel 5

We can get the SQL query from DB sql query in Laravel 5

$dataQuery = DB::table(‘sometable’)
->select(‘sometable.column1′, ‘sometable.column2′, ‘sometable.column3′, ‘sometable.column4′, ‘sometable.column5′);

$dataQuery->toSql(); // this will give you the actual query but this will not give the result with actual data values.

Now What ??

To get the Data binded with the sql statements , you should use the below function

$dataQuery->getBindings(); // This will return an array of data binded to the sql statement.

Now to get the final sql statement, you can use the below function and pass $dataQuery->toSql() and $dataQuery->getBindings() to the functions written below , which you can define it in your helper class or common functions class file.

function getSqlWithBinding($sql,$bindDataArr){
foreach($bindDataArr as $binding)
{
$value = is_numeric($binding) ? $binding : “‘”.$binding.”‘”;
$sql = preg_replace(‘/\?/’, $value, $sql, 1);
}
return $sql;
}

$sqlwithData = getSqlWithBinding($dataQuery->toSql(),$dataQuery->getBindings());
or something like below if you have defined getSqlWithBinding function in common class.

$sql = CommonFunctionClass::getSqlWithBinding($dataQuery->toSql(),$dataQuery->getBindings());

how to get sql query from facade DB::table in laravel 5

Normally we fetch the data as below

$dataresult = DB::table(‘sometable’)
->select(‘sometable.column1’, ‘sometable.column2’, ‘sometable.column3’, ‘sometable.column4’, ‘sometable.column5’)
->get();

Now if we want to get the actaul query from $dataresult using $dataresult->toSql(); // it will not work

The solution for this is first prepare the query without the get() method and then call the toSql() method as below.

$dataQuery = DB::table(‘sometable’)
->select(‘sometable.column1’, ‘sometable.column2’, ‘sometable.column3’, ‘sometable.column4’, ‘sometable.column5’);

$dataQuery->toSql(); // this will give you the actual query

After that you can fetch the result as below.
$dataresult = $dataQuery->get();

Read the next article to know how to get the sql with data binding