ADD: postgres db tables and functions for subgroups #199

db/postgresql/add_subgroups_01_12_18.sql

+CREATE SEQUENCE seq_subgroups
+  START WITH 1
+  INCREMENT BY 1
+  NO MINVALUE
+  NO MAXVALUE
+  CACHE 1;
+
+-- DROP SEQUENCE public.seq_subgroups;
+select setval('seq_subgroups', 1, true);
+
+create table subgroups (
+  id integer default nextval('seq_subgroups'::regclass) NOT NULL,
+  title character varying(20) NOT NULL,
+  teacher_id integer NOT NULL,
+  discipline_id integer NOT NULL
+);
+
+ALTER TABLE ONLY subgroups
+  ADD CONSTRAINT subgroups_pkey PRIMARY KEY (id);
+
+ALTER TABLE ONLY subgroups
+  ADD CONSTRAINT subgroups_ibfk_1 FOREIGN KEY (discipline_id) REFERENCES disciplines(id);
+
+ALTER TABLE ONLY subgroups
+  ADD CONSTRAINT subgroups_ibfk_2 FOREIGN KEY (teacher_id) REFERENCES teachers(id);
+
+CREATE SEQUENCE seq_students_subgroups
+  START WITH 1
+  INCREMENT BY 1
+  NO MINVALUE
+  NO MAXVALUE
+  CACHE 1;
+
+create table students_subgroups (
+  id integer default nextval('seq_students_subgroups'::regclass) NOT NULL,
+  recordbook_id integer NOT NULL,
+  subgroup_id integer NOT NULL
+);
+
+ALTER TABLE ONLY students_subgroups
+  ADD CONSTRAINT students_subgroups_pkey PRIMARY KEY (id);
+
+ALTER TABLE ONLY students_subgroups
+  ADD CONSTRAINT students_subgroups_ibfk_1 FOREIGN KEY (recordbook_id) REFERENCES record_books(id);
+
+ALTER TABLE ONLY students_subgroups
+  ADD CONSTRAINT students_subgroups_ibfk_2 FOREIGN KEY (subgroup_id) REFERENCES subgroups(id);
+
+
+
+CREATE SEQUENCE seq_subgroups_teachers
+  START WITH 1
+  INCREMENT BY 1
+  NO MINVALUE
+  NO MAXVALUE
+  CACHE 1;
+
+create table subgroups_teachers (
+  id integer default nextval('seq_subgroups_teachers'::regclass) NOT NULL,
+  subgroup_id integer NOT NULL,
+  teacher_id integer NOT NULL
+);
+
+ALTER TABLE ONLY subgroups_teachers
+  ADD CONSTRAINT subgroups_teachers_pkey PRIMARY KEY (id);
+
+ALTER TABLE ONLY subgroups_teachers
+  ADD CONSTRAINT subgroups_teachers_ibfk_1 FOREIGN KEY (subgroup_id) REFERENCES subgroups(id);
+
+ALTER TABLE ONLY subgroups_teachers
+  ADD CONSTRAINT subgroups_teachers_ibfk_2 FOREIGN KEY (teacher_id) REFERENCES teachers(id);
+
+CREATE OR REPLACE FUNCTION public.CreateSubgroup(ptitle character varying, pteacherid integer, pdisciplineid integer)
+  RETURNS integer
+LANGUAGE plpgsql
+AS $function$
+declare vID int default -1;
+begin
+  INSERT INTO subgroups (title, teacher_id, discipline_id)
+  VALUES (ptitle, pteacherid, pdisciplineid) returning id into vID;
+  RETURN vID;
+end
+$function$;
+
+CREATE OR REPLACE FUNCTION public.subgroup_delete(psubgroupid integer)
+  RETURNS integer
+LANGUAGE plpgsql
+AS $function$
+begin
+  delete from subgroups
+  where subgroups.id = psubgroupid;
+  RETURN 0;
+end
+$function$;
+
+CREATE OR REPLACE FUNCTION public.Discipline_GetSubgroups(pdisciplineid integer)
+  RETURNS TABLE("ID" integer, "Title" character varying, "TeacherID" integer)
+LANGUAGE sql
+AS $function$
+SELECT subgroups.id AS "ID",
+       subgroups.title AS "Title",
+       subgroups.teacher_id AS "TeacherID"
+FROM subgroups
+WHERE subgroups.discipline_id = pdisciplineid;
+$function$;
+
+CREATE OR REPLACE FUNCTION public.Subgroup_BindStudent(pstudentid integer, psubgroupid integer)
+  RETURNS integer
+LANGUAGE plpgsql
+AS $function$
+declare vID int default -1;
+begin
+  insert into students_subgroups(recordbook_id, subgroup_id)
+  values(pstudentid, psubgroupid)  returning id into vID;
+  RETURN vID;
+end
+$function$;
+
+CREATE OR REPLACE FUNCTION public.Subgroup_UnbindStudent(pstudentid integer, psubgroupid integer)
+  RETURNS integer
+LANGUAGE plpgsql
+AS $function$
+declare vID int default -1;
+begin
+  delete from students_subgroups
+  where students_subgroups.recordbook_id = pstudentid and students_subgroups.subgroup_id = psubgroupid;
+  RETURN 0;
+end
+$function$;
+
+CREATE OR REPLACE FUNCTION public.Subgroup_GetStudents(psubgroupid integer)
+  RETURNS TABLE("ID" integer)
+LANGUAGE sql
+AS $function$
+
+select students_subgroups.recordbook_id from students_subgroups
+where students_subgroups.subgroup_id = psubgroupid;
+
+$function$;
+
+
+CREATE OR REPLACE FUNCTION public.Subgroup_BindTeacher(pteacherid integer, psubgroupid integer)
+  RETURNS integer
+LANGUAGE plpgsql
+AS $function$
+declare vID int default -1;
+begin
+  insert into subgroups_teachers(teacher_id, subgroup_id)
+  values(pteacherid, psubgroupid)  returning id into vID;
+  RETURN vID;
+end
+$function$;
\ No newline at end of file

~dev_rating/application/classes/Model/Subgroup.php

@@ -4,7 +4,7 @@ class Model_Subgroup extends Model_Container
 {
 
     protected function getRawData($id) {
-        $sql = 'CALL `Subgroup_GetInfo`(:id)';
+        $sql = 'SELECT Subgroup_GetInfo(:id)';
         $info = DB::query(Database::SELECT, $sql)
             ->param(':id', $id)->execute();
 
@@ -24,7 +24,7 @@ class Model_Subgroup extends Model_Container
     }
 
     protected function create() {
-        $sql = 'SELECT `CreateSubgroup`(Title, TeacherID, DisciplineID) AS `ID`';
+        $sql = 'SELECT * FROM CreateSubgroup(Title, TeacherID, DisciplineID) AS "ID"';
 
         $this->data[self::$ID_FIELD] = DB::query(Database::SELECT, $sql)
             ->parameters($this->data)
@@ -32,7 +32,7 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function get_students($id, $discipline) {
-        $sql = 'CALL `Subgroup_GetStudents`(:SubgroupID)';
+        $sql = 'SELECT * FROM Subgroup_GetStudents(:SubgroupID)';
         $rows =  DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':SubgroupID'    => $id,
@@ -57,7 +57,7 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function attachStudent($studentId, $subgroupId) {
-        $sql = 'SELECT `Subgroup_BindStudent`(:pStudentID, :pSubgroupID) AS `res`';
+        $sql = 'SELECT * FROM Subgroup_BindStudent(:pStudentID, :pSubgroupID) AS "res"';
         return DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':pStudentID' => $studentId,
@@ -66,7 +66,7 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function detachStudent($studentId, $subgroupId) {
-        $sql = 'SELECT `Subgroup_UnbindStudent`(:pStudentID, :pSubgroupID) AS `res`';
+        $sql = 'SELECT * FROM Subgroup_UnbindStudent(:pStudentID, :pSubgroupID) AS "res"';
         return DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':pStudentID' => $studentId,
@@ -75,7 +75,7 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function attachTeacher($teacherId, $subgroupId) {
-        $sql = 'SELECT `Subgroup_BindTeacher`(:pTeacherID, :pSubgroupID) AS `res`';
+        $sql = 'SELECT * FROM Subgroup_BindTeacher(:pTeacherID, :pSubgroupID) AS "res"';
         return DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':pTeacherID' => $teacherId,
@@ -84,7 +84,7 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function getSubgroupsForDiscipline($disciplineId) {
-        $sql = 'CALL `Discipline_GetSubgroups`(:DisciplineID)';
+        $sql = 'SELECT * FROM Discipline_GetSubgroups(:DisciplineID)';
 
         return DB::query(Database::SELECT, $sql)
             ->parameters([
@@ -93,12 +93,11 @@ class Model_Subgroup extends Model_Container
     }
 
     public static function deleteSubgroup($subgroupId) {
-        $sql = 'SELECT `Subgroup_Delete`(:pSubgroupID) AS `res`';
+        $sql = 'SELECT * FROM Subgroup_Delete(:pSubgroupID) AS "res"';
         return DB::query(Database::SELECT, $sql)
             ->parameters([
                 ':pSubgroupID' => $subgroupId
             ])->execute()->get('res');
     }
 
-
 }