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https://github.com/alextselegidis/easyappointments.git
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Updated the roles model class.
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Alex Tselegidis
parent
beeb821f8a
commit
a4cd74863b
1 changed files with 272 additions and 33 deletions
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@ -12,75 +12,314 @@
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* ---------------------------------------------------------------------------- */
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/**
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* Roles Model
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* Roles model
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*
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* Handles all the database operations of the role resource.
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*
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* @package Models
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*/
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class Roles_model extends EA_Model {
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/**
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* Get the record id of a particular role.
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* Save (insert or update) a role.
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*
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* @param string $role_slug The selected role slug. Slugs are defined in the "application/config/constants.php" file.
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* @param array $role Associative array with the role data.
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*
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* @return int Returns the database id of the roles record.
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* @return int Returns the role ID.
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*
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* @throws InvalidArgumentException
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*/
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public function get_role_id($role_slug)
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public function save(array $role): int
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{
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return $this->db->get_where('roles', ['slug' => $role_slug])->row()->id;
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$this->validate($role);
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if (empty($role['id']))
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{
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return $this->insert($role);
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}
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else
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{
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return $this->update($role);
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}
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}
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/**
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* Returns all the privileges (bool values) of a role slug.
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* Validate the role data.
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*
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* The privilege numbers are converted into bool values of the four main actions (view, add, edit, delete). By
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* checking each value you can know if the user is able to perform this action.
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* @param array $role Associative array with the role data.
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*
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* @param string $slug The role slug.
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*
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* @return array Returns the privilege value.
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* @throws InvalidArgumentException
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*/
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public function get_privileges($slug)
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public function validate(array $role): void
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{
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$privileges = $this->db->get_where('roles', ['slug' => $slug])->row_array();
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unset($privileges['id'], $privileges['name'], $privileges['slug'], $privileges['is_admin']);
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// Convert the int values to bool so that is easier to check whether a user has the required privileges for a
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// specific action.
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foreach ($privileges as &$value)
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// If a role ID is provided then check whether the record really exists in the database.
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if ( ! empty($role['id']))
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{
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$privileges_number = $value;
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$count = $this->db->get_where('roles', ['id' => $role['id']])->num_rows();
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$value = [
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if ( ! $count)
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{
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throw new InvalidArgumentException('The provided role ID does not exist in the database: ' . $role['id']);
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}
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}
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// Make sure all required fields are provided.
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if (
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empty($role['name'])
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)
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{
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throw new InvalidArgumentException('Not all required fields are provided: ' . print_r($role, TRUE));
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}
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}
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/**
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* Insert a new role into the database.
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*
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* @param array $role Associative array with the role data.
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*
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* @return int Returns the role ID.
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*
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* @throws RuntimeException
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*/
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protected function insert(array $role): int
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{
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if ( ! $this->db->insert('roles', $role))
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{
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throw new RuntimeException('Could not insert role.');
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}
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return $this->db->insert_id();
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}
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/**
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* Update an existing role.
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*
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* @param array $role Associative array with the role data.
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*
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* @return int Returns the role ID.
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*
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* @throws RuntimeException
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*/
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protected function update(array $role): int
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{
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if ( ! $this->db->update('roles', $role, ['id' => $role['id']]))
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{
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throw new RuntimeException('Could not update role.');
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}
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return $role['id'];
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}
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/**
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* Remove an existing role from the database.
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*
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* @param int $role_id Role ID.
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*
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* @throws RuntimeException
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*/
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public function delete(int $role_id): void
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{
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if ( ! $this->db->delete('roles', ['id' => $role_id]))
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{
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throw new RuntimeException('Could not delete role.');
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}
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}
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/**
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* Get a specific role from the database.
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*
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* @param int $role_id The ID of the record to be returned.
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*
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* @return array Returns an array with the role data.
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*
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* @throws InvalidArgumentException
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*/
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public function find(int $role_id): array
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{
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if ( ! $this->db->get_where('roles', ['id' => $role_id])->num_rows())
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{
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throw new InvalidArgumentException('The provided role ID was not found in the database: ' . $role_id);
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}
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return $this->db->get_where('roles', ['id' => $role_id])->row_array();
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}
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/**
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* Get a specific field value from the database.
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*
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* @param int $role_id Role ID.
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* @param string $field Name of the value to be returned.
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*
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* @return string Returns the selected role value from the database.
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*
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* @throws InvalidArgumentException
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*/
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public function value(int $role_id, string $field): string
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{
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if (empty($field))
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{
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throw new InvalidArgumentException('The field argument is cannot be empty.');
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}
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if (empty($role_id))
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{
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throw new InvalidArgumentException('The role ID argument cannot be empty.');
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}
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// Check whether the role exists.
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$query = $this->db->get_where('roles', ['id' => $role_id]);
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if ( ! $query->num_rows())
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{
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throw new InvalidArgumentException('The provided role ID was not found in the database: ' . $role_id);
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}
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// Check if the required field is part of the role data.
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$role = $query->row_array();
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if ( ! array_key_exists($field, $role))
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{
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throw new InvalidArgumentException('The requested field was not found in the role data: ' . $field);
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}
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return $role[$field];
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}
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/**
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* Get all roles that match the provided criteria.
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*
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* @param array|string $where Where conditions
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* @param int|null $limit Record limit.
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* @param int|null $offset Record offset.
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* @param string|null $order_by Order by.
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*
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* @return array Returns an array of roles.
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*/
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public function get($where = NULL, int $limit = NULL, int $offset = NULL, string $order_by = NULL): array
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{
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if ($where !== NULL)
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{
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$this->db->where($where);
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}
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if ($order_by !== NULL)
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{
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$this->db->order_by($order_by);
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}
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return $this->db->get('roles', $limit, $offset)->result_array();
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}
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/**
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* Get the permissions array by role slug.
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*
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* The permission numbers are converted into boolean values of the four main actions:
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*
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* - view
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* - add
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* - edit
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* - delete
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*
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* After checking each individual value, you can make sure if the user is able to perform each action or not.
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*
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* @param string $slug Role slug.
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*
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* @return array Returns the permissions value.
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*/
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public function get_permissions_by_slug(string $slug): array
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{
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$role = $this->db->get_where('roles', ['slug' => $slug])->row_array();
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unset(
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$role['id'],
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$role['name'],
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$role['slug'],
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$role['is_admin']
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);
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// Convert the integer values to boolean.
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$permissions = [];
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foreach ($role as $resource => $value)
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{
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$permissions[$resource] = [
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'view' => FALSE,
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'add' => FALSE,
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'edit' => FALSE,
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'delete' => FALSE
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];
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if ($privileges_number > 0)
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if ($value > 0)
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{
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if ((int)($privileges_number / PRIV_DELETE) == 1)
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if ((int)($value / PRIV_DELETE) === 1)
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{
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$value['delete'] = TRUE;
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$privileges_number -= PRIV_DELETE;
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$permissions[$resource]['delete'] = TRUE;
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$value -= PRIV_DELETE;
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}
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if ((int)($privileges_number / PRIV_EDIT) == 1)
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if ((int)($value / PRIV_EDIT) === 1)
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{
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$value['edit'] = TRUE;
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$privileges_number -= PRIV_EDIT;
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$permissions[$resource]['edit'] = TRUE;
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$value -= PRIV_EDIT;
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}
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if ((int)($privileges_number / PRIV_ADD) == 1)
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if ((int)($value / PRIV_ADD) === 1)
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{
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$value['add'] = TRUE;
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$privileges_number -= PRIV_ADD;
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$permissions[$resource]['add'] = TRUE;
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}
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$value['view'] = TRUE;
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$permissions[$resource]['view'] = TRUE;
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}
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}
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return $privileges;
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return $permissions;
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}
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/**
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* Get the query builder interface, configured for use with the roles table.
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*
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* @return CI_DB_query_builder
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*/
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public function query(): CI_DB_query_builder
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{
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return $this->db->from('roles');
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}
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/**
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* Search roles by the provided keyword.
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*
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* @param string $keyword Search keyword.
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* @param int|null $limit Record limit.
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* @param int|null $offset Record offset.
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* @param string|null $order_by Order by.
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*
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* @return array Returns an array of roles.
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*/
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public function search(string $keyword, int $limit = NULL, int $offset = NULL, string $order_by = NULL): array
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{
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return $this
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->db
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->select()
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->from('roles')
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->like('name', $keyword)
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->or_like('slug', $keyword)
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->limit($limit)
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->offset($offset)
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->order_by($order_by)
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->get()
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->result_array();
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}
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/**
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* Attach related resources to a role.
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*
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* @param array $role Associative array with the role data.
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* @param array $resources Resource names to be attached.
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*
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* @throws InvalidArgumentException
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*/
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public function attach(array &$role, array $resources): void
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{
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// Roles do not currently have any related resources.
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}
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}
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