How to make the active record many to many relationship easier to develop in codeigniter?
I have the table like this:
[Note]
[id]
[Note_Tag_list]
[Note_id]
[Tag_id]
[Tag]
[id]
Is there any active record to let me ONLY join these three tables? Because every time I based on the note id to loop back the note_tag_list record, and use the note tag list record, make me feel really, really annoying.
The flow I use:
//loop the note the user request
//get the note by id
//use th开发者_开发百科e note id to get the note tag list, and return the array of note tag list
//loop the array of note tag list and use the tag id to quest the tag
How do I do make this easier?
Maybe you could try datamapper :)
I know this is an old question, but anyways i will answer it for anyone who faces the same problem in future.
you need to use a JOIN query to connect multiple tables using primary and foreign keys relation.
Code to get all records
$q = $this->db
->select()
->from('Note AS n')
->join('Note_Tag_list AS n_t_l', 'n_t_l.Note_id = n.id', 'left')
->join('Tag AS t', 't.id = n_t_l.Tag_id', 'left')
->get();
Code to get only specific records (by using WHERE clause)
$where = array(
'n.id' => **provide note id here**
);
$q = $this->db
->select()
->from('Note AS n')
->join('Note_Tag_list AS n_t_l', 'n_t_l.Note_id = n.id', 'left')
->join('Tag AS t', 't.id = n_t_l.Tag_id', 'left')
->where($where)
->get();
For more information read the codeigniter's docs. Codeigniter Query Builder
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