I'm in a situation where I'm doing a MySQL query with Codeigniter and where I have a lot of fields value request which are ALL the same.
Example:
$this->db->query('SELECT * FROM abc WHERE user_id = ? AND msg_from = ? AND msg_to != ?', [$id, $id, $id]);
This has just 3 question marks but the query I'm working on is HUGE and has 19 question marks WHICH ARE ALL THE SAME variable.
So I was trying to figure out how to tell Codeigniter all question marks are pointing to the same variable without having to fill an array with 19 times the same variable.
I thought of a for-loop but I wanted to know if a shortcut exist.
you should be able to do this with Codeigniters Query Builder pretty easily
Something like that should work:
$this->db
->select('*')
->from('abc');
$arrFields = array('users_id', 'msg_from', 'msg_to');
foreach($arrFields AS $val)
{
$this->db->where($val, $id);
}
$query = $this->db->get();
Related
I'm working on laravel array serialize. Below is serialize in controller.
public function CreateSave(CreateTestTopicRequest $request){
...code..
$testtopic->class_room_id = $request->classroom;
$testtopic->roomno = serialize($request->roomno);
...code..
}
Then, roomno will be saved to database like.
a:2:{i:0;s:1:"1";i:1;s:1:"2";}
I would like to get result. For example class_room_id = 1 and roomno only contain in roomno array. I may use command to get all as below.
$testtopics = TestTopic::where('class_room_id',1)->get();
But, I do not know to get record only class_room_id = 1 and roomno contain in array. Any advice or guidance on this would be greatly appreciated, Thanks
You can use like search in json fields
TestTopic::where('class_room_id',1)->where('roomno', 'like', '%"id": 1%')->first()
When checking for an array of values the whereIn method can be used:
$roomno = 'a:2:{i:0;s:1:"1";i:1;s:1:"2";}';
$testtopics = TestTopic::where('class_room_id',1)
->whereIn('roomno', unserialize($roomno))
->get();
Multiple where statements can be combined by passing an array:
$roomno = 'a:2:{i:0;s:1:"1";i:1;s:1:"2";}';
$users = TestTopic::where([
['class_room_id', '=', '1'],
['roomno', '=', $roomno],
])->get();
I have an array of city codes
$cities=[9,12,14,2,3,4,5,6,8,10,11,13]
My posts table has a foreign key named city_id
I want sorting posts based on the values of this array
In this way: the first posts of the city 9 then the posts of the city 12 and then posts of city 14 and etc to be loaded
I tried using this method but this is wrong
$posts->orderByRaw('city_id in ? desc',$cities);
Can you help me find the best solution?
The only way i can i think of doing something like that(at least right now) is by doing something like so
$all_posts = [];
$cities=[9,12,14,2,3,4,5,6,8,10,11,13];
foreach ($cities as city) {
$city_posts = Post::whereRaw('city_id = ?', $city)->orderByRaw('created_at DESC');
array_push($all_posts, $city_posts);
}
dd($all_posts);
1st find all the posts relevant to cities and then sort w.r.t given order like
$cities = [9,12,14,2,3,4,5,6,8,10,11,13]; // order you'd like to see with posts
$posts = Post::whereIn('city_id', $cities)->sort(function($a, $b) uses ($cities) {
$pos_a = array_search($a->getAttributes()['city_id'], $cities);
$pos_b = array_search($b->getAttributes()['city_id'], $cities);
return $pos_a - $pos_b;
})->get();
// $posts contains the required order with city_ids
You can use raw query with "CASE something THEN index" this way you tell the query to see something as index so you can assign 0 to the first item in your array.
$sql .= "....";
foreach($cities as $index => $city) {
$sql .= "CASE {$city} THEN {$index}";
}
$sql .= "....";
Thanks to the friends solution,I used this method, and I think it's less complicated than the suggested methods of friends
$posts=$posts->orderByRaw('FIELD(city_id, '.$cities->implode( ', ').') asc')->orderBy('created_at','desc')->get();
I have 4 tables like this:
Now, I want to select all columns from all tables where model.featured=1. i.e.
model.id
model.name
model_attributes.id
model_attributes.attributes_value
model_images.id
model_images.model_images
attributes.id
attributes.name
attributes.value
I can only do basic level queries and I'm not sure if I'm anywhere near to the solution but this is what I have tried (returns nothing):
$this->db->select('*');
$this->db->from('model');
$this->db->join('model_images','model.id = model_images.model_id','RIGHT');
$this->db->join('model_attributes','model.id = model_attributes.model_id','RIGHT');
$this->db->join('attributes','model_attributes.attributes_id = attributes.id','RIGHT');
$this->db->where('model.featured', 1);
$query = $this->db->get();
return $query->result();
How do I achieve what I want ? Or, is there any other better methods to do it ?
// try this query
$this->db->select('*');
$this->db->from('model');
$this->db->join('model_images','model_images.model_id = model.id');
$this->db->join('model_attributes','model_attributes.model_id = model.id');
$this->db->join('attributes','attributes.id = model_attributes.attributes_id');
$this->db->where('model.featured','1');
$query = $this->db->get()->result();
return $query;
Please go through below mentioned solution.
$this->db->select('model.*,model_images.*,model_attributtes.*, attributes.*'):
Let me know if it not works for you.
Please go through below solution. If multiple table has same column name then you have to give alias for each column name which have same name in both the table. because by default CI merge all column name and generate result.
$this->db->select('*,c.name as c_name,s.name as s_name');
$this->db->from('country c');
$this->db->join('state s', 'c.id = s.country_id');
$query = $this->db->get();
This is the native sql:
$sql = "Select count(name) from users Where email = 't#t.com' and user_id = 10";
I have this laravel code:
$checker = Customer::whereEmailAndUserId("t#t.com",10)->count("name");
Is this a correct way to do it in laravel?
You have to use where helper function and pass an array of checks. For example in your code it will be:
$checker = Customer::where([
['email', '=', 't#t.com'],
['user_id' '=', '10']
])->count();
Note: Please use the appropriate column name as it in table.
Assuming Customer model represents table users, you'll get query with eloquent like this:
Customer::where('email', 't#t.com')->where('user_id', 10)->select(\DB::raw('count(name)'))->get();
The option you are trying is incorrect
here is the right option
$users = \App\Customer::where('email','t#t.com')
->where('user_id',10)
->count()
Explanation of above code
App\Customer is the Model class and I am trying to read records where email = 't#t.com you can use various comparison operators like <,> and so on and you can also use the same function to for string pattern matching also
Eg.
$users = \App\Customer::where('email','%t.com')
->where('user_id',10)
->count()
You can use the same where function for Null Value test also
Eg.
$users = \App\Customer::where('email','=', null)
->where('user_id',10)
->count()
The above where clause will be converted to is null test of the SQL
You can read more here
I have a quite complex search method which handles the $input array from a controller, the thing is that I want to perform a custom SQL statement in the middle of it, for example:
$input['myField'] = array('condition' => 'rawStatement', value => 'AND WHERE LEFT(field,9) = 10`
and that would apply into my busy-conditions-method-builder
You can see the method at
http://pastebin.com/BNUKk2Xd
I'm trying to apply it on lines 52-54 but cant seem to get it working.
I know this is an old question but looking at your pastbin you have to chain your query like.
$query = User::join('user_personal','users.id','=','user_personal.user_id');
# Join user askings
$query = $query->leftJoin('user_askings','users.id','=','user_askings.user_id');
$query = ..........
$query = $query->orderBy('users.profile_score','DESC');
$query = $query->groupBy('users.id')->paginate(32);
return $query;