I'm trying to filter homes by Price Ascending, Price Descending, Most Recent, A-Z, Z-A and I've have success with exception to the fact that the queries to not persist after the first page. Can anyone please show me a way to do it?
public function index(Request $request)
{
$query = $request->input('queryOptions');
if($query == 'Price Ascending'){
$properties = Property::orderBy('price', 'asc');
}
if($query == 'Price Descending'){
$properties = Property::orderBy('price', 'desc');
}
if($query == 'Most Recent'){
$properties = Property::latest();
}
if($query == 'A-Z'){
$properties = Property::orderBy('city', 'asc');
}
if($query == 'Most Recent'){
$properties = Property::latest();
}
$properties = $properties->paginate(10);
return view('property.index', compact('properties', 'query'));
}
You can use the appends function within your declaration in your view - and use it against your $query as declared in your controller
{{ $properties->appends(['queryOptions' => $query ])->links() }}
https://laravel.com/docs/master/pagination
Related
I have a dB query where I would like to groupBy() only when conditions are met without using union because of pagination.
Unfortunately groupBy() seems to only work when called on the entire query outside of the loop.
This was made for dynamic filtering from $filterArr. Depending on the array I need to select from different columns of the table.
When the $key=='pattern' I would need the distinct results from its column.
the query looks something like this
select `col_1`, `col_2`, `col_3`
from `mytable`
where (`color` LIKE ? or `pattern` LIKE ? or `style` LIKE ?)
group by `col_2` //<< i need this only for 'pattern' above and not the entire query
Heres the model:
// $filterArr example
// Array ( [color] => grey [pattern] => stripe )
$query = DB::table('mytable');
$query = $query->select(array('col_1', 'col_2', 'col_3'), DB::raw('count(*) as total'));
$query = $query->where(function($query) use ($filterArr){
$ii = 0;
foreach ($filterArr as $key => $value) {
if ($key=='color'){
$column = 'color';
}else if ($key=='style'){
$column = 'style';
}else if ($key=='pattern'){
$column = 'pattern';
$query = $query->groupBy('col_2'); // << !! does not work
}
if($ii==0){
$query = $query->where($column, 'LIKE', '%'.$value.'%');
}
else{
$query = $query->orWhere($column, 'LIKE', '%'.$value.'%');
}
$ii++;
}
});
$query = $query->orderBy('col_2', 'asc')->simplePaginate(30);
I think you can simplify your code a bit:
$query = DB::table('mytable');
$query = $query->select(array('col_1', 'col_2', 'col_3'), DB::raw('count(*) as total'));
$query = $query->where(
collect($filterArr)
->only(['color','style','pattern'])
->map(function ($value, $key) {
return [ $key, 'like', '%'.$value.'%', 'OR' ];
})->all()
)->when(array_key_exists('pattern', $filterArr), function ($query) {
return $query->groupBy('col_2');
});
$query = $query->orderBy('col_2', 'asc')->simplePaginate(30);
Goodmorning
I'm trying to make a filter with multiple variables for example I want to filter my products on category (for example 'fruit') and then I want to filter on tag (for example 'sale') so as a result I get all my fruits that are on sale. I managed to write seperate filters in laravel for both category and tag, but if I leave them both active in my productsController they go against eachother. I think I have to write one function with if/else-statement but I don't know where to start. Can somebody help me with this please?
These are my functions in my productsController:
public function productsPerTag($id){
$tags = Tag::all();
$products = Product::with(['category','tag','photo'])->where(['tag_id','category_id'] ,'=', $id)->get();
return view('admin.products.index',compact('products','tags'));
}
public function productsPerCategory($id){
$categories = Category::all(); //om het speciefieke id op te vangen heb ik alle categories nodig
$products = Product::with(['category','tag','photo'])->where('category_id', '=', $id)->get();
return view('admin.products.index',compact('products','categories'));
}
These are my routes in web.php. I guess this will also have to change:
Route::get('admin/products/tag/{id}','AdminProductsController#productsPerTag')->name('admin.productsPerTag');
Route::get('admin/products/category/{id}','AdminProductsController#productsPerCategory')->name('admin.productsPerCategory');
For filter both
change your URL like
Route::get('admin/products/tag/{tag_id?}/{category_id?}','AdminProductsController#productsPerTag')->name('admin.productsPerTag');
Make your function into the controller like
public function productsPerTag($tagId = null, $categoryId = null){
$tags = Tag::all();
$categories = Category::all();
$query = Product::with(['category','tag','photo']);
if ($tagId) {
$query->where(['tag_id'] ,'=', $tagId);
}
if ($tagId) {
$query->where(['category_id'] ,'=', $categoryId);
}
$products = $query->get();
return view('admin.products.index',compact('products','tags', 'categories'));
}
You are trying to filter in your query but you pass only 1 parameter to your controller, which is not working.
1) You need to add your filters as query params in the URL, so your url will look like:
admin/products/tag/1?category_id=2
Query parameters are NOT to be put in the web.php. You use them like above when you use the URL and are optional.
2) Change your controller to accept filters:
public function productsPerTag(Request $request)
{
$categoryId = $request->input('category_id', '');
$tags = Tag::all();
$products = Product::with(['category', 'tag', 'photo'])
->where('tag_id', '=', $request->route()->parameter('id'))
->when((! empty($categoryId)), function (Builder $q) use ($categoryId) {
return $q->where('category_id', '=', $categoryId);
})
->get();
return view('admin.products.index', compact('products', 'tags'));
}
Keep in mind that while {id} is a $request->route()->parameter('id')
the query parameters are handled as $request->input('category_id') to retrieve them in controller.
Hope It will give you all you expected outcome if any modification needed let me know:
public function productList($tag_id = null , $category_id = null){
$tags = Tag::all();
$categories = Category::all();
if($tag_id && $category_id) {
$products = Product::with(['category','tag','photo'])
->where('tag_id' , $tag_id)
->where('category_id' , $category_id)
->get();
} elseif($tag_id && !$category_id) {
$products = Product::with(['category','tag','photo'])
->where('tag_id' , $tag_id)
->get();
} elseif($category_id && !$tag_id) {
$products = Product::with(['category','tag','photo'])
->where('category_id' , $category_id)
->get();
} elseif(!$category_id && !$tag_id) {
$products = Product::with(['category','tag','photo'])
->get();
}
return view('admin.products.index',compact(['products','tags','products']));
}
Route:
Route::get('admin/products/tag/{tag_id?}/{category_id?}','AdminProductsController#productsPerTag')->name('admin.productsPerTag');
I'm making a "simple" api for laravel. This api has to handle with filters, pagination and sorting the result. To make this I use laravel query builder. The problem is that it's making a select without a table name, for example:
select * order by `id` asc
My code:
public function index()
{
$request = request();
$query = DB::table('customers')->newQuery();
// Orden
if (request()->has('sort')) {
// Multiorden
$sorts = explode(',', request()->sort);
foreach ($sorts as $sort) {
list($sortCol, $sortDir) = explode('|', $sort);
$query = $query->orderBy($sortCol, $sortDir);
}
} else {
$query = $query->orderBy('id', 'asc');
}
//Filtros
if ($request->exists('filter')) {
$query->where(function($q) use($request) {
$value = "%{$request->filter}%";
$q->where('name', 'like', $value)
->orWhere('address', 'like', $value);
});
}
$perPage = request()->has('per_page') ? (int) request()->per_page : null;
$pagination = $query->get()->paginate($perPage);
$pagination->appends([
'sort' => request()->sort,
'filter' => request()->filter,
'per_page' => request()->per_page
]);
return response()->json(
$pagination
);
}
Error:
Illuminate\Database\QueryException: SQLSTATE[HY000]: General error:
1096 No tables used (SQL: select * order by id asc) in file
C:\xampp\htdocs\iService\vendor\laravel\framework\src\Illuminate\Database\Connection.php
on line 664
UPDATE:
return DB::table('customers')->get();
If i use this, the api works fine, I have more apis working. The problem is that I need Query Builder to handle filters, sort, etc...
The problem was the way I instance a new query.
$query = DB::table('customers')->newQuery();
Correct:
$query = Model::query();
For my example:
$query = Customer::query();
Let's say I have two models: Park and Items. Each Park can have a number of Items, through a HasMany relationship.
In Items table there's a park_id field and a type flag: an Item can be a fountain, or a basketball court, or whatever.
What I need to do is to filter the parks to obtain only those who has ALL of the item types passed in an array. This is what I have:
$parks = Park::whereHas('items', function($q) use ($request) {
$q->where('type', json_decode($request->type_list));
})->get();
But it's not working properly. Any ideas?
Thanks a lot, and happy new year to all!
Edit: I've found a working though really ugly solution:
$types_array = json_decode($request->type_list, true);
$results = [];
// A collection of parks for each item type
foreach($types_array as $type) {
$results[] = Park::whereHas('items', function($q) use ($type) {
$q->where('type', $type);
})->get();
}
// Intersect all collections
$parks = $results[0];
array_shift($results);
foreach ($results as $collection) {
$parks = $collection->intersect($parks);
}
return $parks;
You can use a foreach in whereHas method. It should be something like this:
$array = json_decode($request->type_list, true)
$parks = Park::whereHas('items', function($q) use ($array) {
foreach ($array as $key => $type) {
$q->where('type', $type);
}
})->get();
I think using where clause to match all item's type for the same row will result nothing, it's like doing where id = 1 and id = 2 and this is impossible because id can take only one value, what you should do is to use whereIn to get all items that match at least one type and then use groupBy to group result by park_id, then in the having clause you can check if the group count equal the type_list count:
$types = json_decode($request->type_list, true);
$parks = Park::whereHas('items', function($q) use ($types) {
$q->select('park_id', DB::raw('COUNT(park_id)'))
->whereIn('type', $types)
->groupBy('park_id')
->havingRaw('COUNT(park_id) = ?', [ count($types) ]);
})->get();
You can add multiple whereHas() constraint to one query:
$types_array = json_decode($request->type_list, true);
$query = Park::query();
foreach($types_array as $type) {
$query->whereHas('items', function($q) use($type) {
$q->where('type', $type);
});
}
$parks = $query->get();
I have this function below which get the pid numbers from my database. The pid is parent id.
public function test() {
$arr = array();
foreach ($this->make_parent_list() as $result) {
$arr[] = $result;
}
print_r(implode(',', $arr));
}
The out put is as follows 4, 1
But I need it to print the lowest number first. 1, 4
Question How can I make sure when i view the parent id / pid that it
will show the lowest number first I have tried
$this->db->order_by('pid', 'desc'); and $this->db->order_by('pid',
'asc');
public function make_parent_list() {
$this->db->where('fid', '5');
$query = $this->db->get('forum');
$return = array();
foreach ($query->result() as $category)
{
$this->db->where('fid', $category->pid);
$this->db->order_by('pid', 'desc');
$query = $this->db->get('forum');
$return[$category->pid] = $category->pid;
foreach ($query->result() as $category)
{
$return[$category->pid] = $category->pid;
}
}
return $return;
}
Solved
I had to created a $results variable and then wrap in sort() outside foreach loop
$arr = array();
$results = $this->make_parent_list();
sort($results);
foreach ($results as $result) {
$arr[] = $result;
}
echo implode(',', $arr);
Now out put 1,4
I think you got a bit lost... The order_by asc,desc does work. Your function has order_by desc and an unnecessary foreach etc.
Assumptions: The forum table has at least the two columns pid and fid. I created a table with
fid , pid
5 1
5 4
If you simplify your function to...
// Given the fid, return an array of pid values in ascending order
public function make_parent_list() {
$this->db->where('fid', '5'); // Hardcoded for testing.
$this->db->order_by('pid', 'asc');
$query = $this->db->get('forum');
$pid_list = array();
foreach ($query->result() as $category) {
$pid_list[] = $category->pid;
}
return $pid_list;
}
Then you only need
$results = $this->make_parent_list();
echo implode(',', $results);
That will give you a result of 1,4.
If you change asc to desc in the order_by in the function then you will get 4,1.