Codeigniter动态日期范围

Question

I was asked to create some reports using charts. I'm started studying programming recently so I might be asking something kinda stupid, but I'm really struggling with this one. I was able to draw the charts using google charts and querying my db BUT I don't know how to implement a date range picker. Here is my model, well, one of them...

public function tester() {

 $this->db->where('type_id', 7);
 $this->db->where('entry_date >', '2016-05-11');
 $this->db->where('entry_date <', 'curdate()', FALSE);
 $this->db->select('first_name, last_name, count(type_id) AS totals');
 $this->db->from('entries');
 $this->db->join('users', 'users.user_id = entries.user_id');
 $this->db->group_by('entries.user_id');
 $this->db->order_by('totals', 'DESC');
 $this->db->limit(3);
 $query = $this->db->get();

 return $query->result();

}

Those dates in the where statements are there for testing purposes, it works just fine. Question is: How can I dynamically modify this query based on an start and end date selected by the user and redraw the chart?

Thanks in advance

Answer 1

Usually with a start and end date range, you want to include the dates so i showed it as >= But you can also just make it > if you really need greater then etc.

public function tester($startDate,$endDate) {

 $this->db->where('type_id', 7);
 $this->db->where('entry_date >=', $startDate);
 $this->db->where('entry_date <=', $endDate);
 $this->db->select('first_name, last_name, count(type_id) AS totals');
 $this->db->from('entries');
 $this->db->join('users', 'users.user_id = entries.user_id');
 $this->db->group_by('entries.user_id');
 $this->db->order_by('totals', 'DESC');
 $this->db->limit(3);
 $query = $this->db->get();

 return $query->result();

}