add custom column to laravel excel - php

Question

I am using maatwebsite/excel, I want to know if it's possible to add custom column when I export my data as CSV or not?
Explanation
I am successfully exporting my products data, but my products have other option which is not stored in my products table such as: specification.
my specifications are stored in 2 different tables named specifications where is parent like CPU and subscpecifications where child's are stored like: Core i5.
another table i am using to store child's id and products id in order to relate each product to their subspecifications.
Sounds Complecated right? :) here i provide ugly map to get the logic :)
Now, What I try to do is:
Add extra column to my csv file and include all specifications of each product.
sample:
Codes
here is my current export function
public function export(Request $request) {
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getRealInput[$key] = $input['defaultname'][$key];
}
}
$products = Product::select($getRealInput)->get();
Excel::create('products', function($excel) use($products, $request) {
$excel->sheet('sheet 1', function($sheet) use($products, $request){
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getCustomInput[$key] = $input['customname'][$key];
}
}
$sheet->fromArray($products, null, 'A1', false, false);
$sheet->row(1, $getCustomInput);
});
})->export('csv');
return redirect()->back();
}
Questions
Is that possible?
If yes, Base on my function above, how do I do it?
Thanks in advance.
UPDATE 1
I have added this code to my function
$allRows = array();
$data = array();
foreach($products as $product){
$specs = $product->subspecifications;
foreach($specs as $spec){
$data[] = $spec->specification->title;
$data[] = $spec->title;
}
}
array_push($allRows , $data);
and changed this line:
$sheet->fromArray($products, null, 'A1', false, false);
to
$sheet->fromArray($allRows, null, 'A1', false, false);
now here is what I have:
here is my full function currently:
public function export(Request $request) {
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getRealInput[$key] = $input['defaultname'][$key];
}
}
$products = Product::select($getRealInput)->get();
Excel::create('products', function($excel) use($products, $request) {
$excel->sheet('sheet 1', function($sheet) use($products, $request){
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getCustomInput[$key] = $input['customname'][$key];
}
}
// test code of adding subspacifications
$allRows = array();
$data = array();
foreach($products as $product){
$specs = $product->subspecifications;
foreach($specs as $spec){
$data[] = $spec->specification->title;
$data[] = $spec->title;
}
}
array_push($allRows , $data);
$sheet->fromArray($allRows, null, 'A1', false, false);
//
// $sheet->fromArray($products, null, 'A1', false, false);
$sheet->row(1, $getCustomInput);
});
})->export('csv');
return redirect()->back();
}
UPDATE 2
Well tonight I've played with my codes a lot and FINALLY :) I got what I needed, here is how:
//codes...
// Here is you custom columnn logic goes
foreach($products as $product){
$specifications = DB::table('products')
->where('products.id', $product->id)
->join('product_subspecification', 'product_subspecification.product_id', '=', 'products.id')
->join('subspecifications', 'subspecifications.id', '=', 'product_subspecification.subspecification_id')
->select('subspecifications.title')
->pluck('title');
$product['specifications'] = rtrim($specifications,',');
}
//
$sheet->fromArray($products, null, 'A1', false, false);
$sheet->row(1, $getCustomInput);
//... rest of the codes
This will give me my products specifications, however there is 3 little issues:
I do not have heading for my specifications in CSV file
Products without specification shows [] instead of nothing
products with specification also covers them with [] and ""
Here I provided screenshot for better understanding:

Answer 1

You need to prepare custom column Specifications by looping through products. Here is your fix,
public function export(Request $request) {
$headers[] = [
'Id',
'Title',
'Specifications',
];
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getRealInput[$key] = $input['defaultname'][$key];
}
}
$products = Product::select($getRealInput)->with('subspecifications')->get()->toArray();
Excel::create('products', function($excel) use($headers,$products, $request) {
$excel->sheet('sheet 1', function($sheet) use($headers,$products, $request){
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getCustomInput[$key] = $input['customname'][$key];
}
}
// Here is you custom columnn logic goes
foreach($products as $product){
$specs = "";
$specifications = DB::table('products')
->where('products.id', $product->id)
->join('product_subspecification', 'product_subspecification.product_id', '=', 'products.id')
->join('subspecifications', 'subspecifications.id', '=', 'product_subspecification.subspecification_id')
->select('subspecifications.title')
->pluck('title');
foreach($specifications as $spec){
$specs = $specs .','.$spec;
}
$product['specifications'] = ltrim($specs,',');
}
//
$mergedProducts = array_merge($headers, $products);
$sheet->fromArray($mergedProducts, null, 'A1', false, false);
$sheet->row(1, $getCustomInput);
});
})->export('csv');
return redirect()->back();
}
Update
As per your sheet image I can assume you have only three columns Id, Title and Specifications, you can change header array according to the columns you are getting from DB.

Answer 2

Yes its possible.
create array for row ie. data = array();
push cell data to array
you can fetch relation data using eloquent or join as well, here I am fetching inside loop.
Updated Function as below:
I tried to match with your data structure
public function export(Request $request) {
$input = $request->except('_token');
foreach ($input['cb'] as $key => $value) {
if ($value== 'on') {
$getRealInput[$key] = $input['defaultname'][$key];
}
}
$products = Product::select($getRealInput)->get();
Excel::create('products', function($excel) use($products, $request) {
$excel->sheet('sheet 1', function($sheet) use($products, $request){
// test code of adding subspacifications
$allRows = array();
array_push($allRows , ['id', 'title', 'specifications']); // Added title row
$data = array();
foreach($products as $product){
$data[] = $product->id; // Added product fields
$data[] = $product->title;
$specs = $product->subspecifications;
$spec_details = "";
foreach($specs as $spec){
$spec_details .= $spec->specification->title.':'. $spec->title. ' '; // appended specification:subspecification
}
$data[] = $spec_details;
}
array_push($allRows , $data);
$sheet->fromArray($allRows, null, 'A1', false, false);
//
// $sheet->fromArray($products, null, 'A1', false, false);
//$sheet->row(1, $getCustomInput); // commented
});
})->export('csv');
return redirect()->back();
}

Answer 3

I do not have heading for my specifications in CSV file
To solve the issue, you can define header and use use array_merge(). For I.E.
$headers[] = [
'Title',
'Specifications',
];
$products= array_merge($headers, $products);
Products without specification shows [] instead of nothing
products with specification also covers them with [] and ""
For 2nd and 3rd point you can use implode() to get rid of []
$product['specifications'] = implode(',', $specifications);
Hope this helps

Answer 4

It works for me. very simple
// Headings//
$headers[] = ['Id', 'Name'];
// 2 Rows //
$data[0] = ['1', 'John'];
$data[1] = ['2', 'Roger'];
Excel::create('report', function($excel) use($headers, $data) {
$excel->sheet('sheet 1', function($sheet) use($headers, $data){
$merged_records = array_merge($headers, $data);
$sheet->fromArray($merged_records, null, 'A1', false, false);
});
})->export('csv');