set relation grocery crud error - php

Question

I have 2 tables
CREATE TABLE `tbl_patient` (
id_patient INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(25) NOT NULL DEFAULT "not available",
att1 VARCHAR(5 ) NOT NULL DEFAULT "att1",
att2 VARCHAR(25) NOT NULL DEFAULT "att2",
att3 VARCHAR(25) NOT NULL DEFAULT "att3",
CONSTRAINT `uc_Info_patient` UNIQUE (`id_patient`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;
and
CREATE TABLE `tbl_patient_medicine` (
id_patient_medicine INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
id_patient INTEGER NOT NULL,
name_medicine VARCHAR(50) NOT NULL DEFAULT "",
dosis VARCHAR(50) NOT NULL DEFAULT "",
start_date timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
treatment VARCHAR(50) NOT NULL DEFAULT "",
times_per_day VARCHAR(50) NOT NULL DEFAULT "",
CONSTRAINT fk_ID_Patient_Medicine FOREIGN KEY (id_patient) REFERENCES `tbl_patient`(id_patient)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;
As you can see table patient_medicine is the intermediate table of between tbla_medicines, and table patient.
Now I want to consult all data from tbl_patient_medicine with grocery crud like in this sqlfiddle
supossing I pass the id in the uri (in the example will be id_patient=1)
I have
public function details_medication($my_id = 0)
{
try{
$crud = new grocery_CRUD();
$crud->where('id_patient',$my_id);
$crud->set_table('tbl_patient_medicine');
//HOW TO DO IT?
$crud->set_relation('id_patient', 'tbl_patient', 'id_patient');
$output = $crud->render();
$this->_output($output);
}catch(Exception $e){
show_error($e->getMessage().' --- '.$e->getTraceAsString());
}
}
SO I have tried different ways but got errors like this:
A Database Error Occurred
Error Number: 1052
Column 'id_patient' in where clause is ambiguous
SELECT `tbl_patient_medicine`.*, j7a675883.id_patient AS s7a675883
FROM (`tbl_patient_medicine`)
LEFT JOIN `tbl_patient` as j7a675883
ON `j7a675883`.`id_patient` = `tbl_patient_medicine`.`id_patient` WHERE `id_patient` = '1' LIMIT 25
Line Number: 87

Answer 1

I did your example:
Controller:
function medicine()
{
$crud = new grocery_CRUD();
$crud->set_table('tbl_patient_medicine');
$crud->required_fields('id_patient','name_medicine','dosis','start_date','treatment','time_per_day');
$crud->columns('id_patient','name_medicine','dosis','start_date','treatment','time_per_day');
$crud->fields('id_patient','name_medicine','dosis','start_date','treatment','time_per_day');
$crud->set_relation('id_patient','tbl_patient','name');
$output = $crud->render();
$this->_example_output($output);
}
It works!
Edited:
$crud->set_relation('id_patient','tbl_patient','{name}, {att1}, {att2}, {att3}');

Answer 2

Try by changing WHERE j7a675883.id_patient