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PODropdown dependent on other dropdown in php
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2013-09-03T11:35:16.553
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Hey friends I am trying to make two dropdown boxes. The first one is sensor type select. The second one is sensor names and it should be dependent on the first one .I am using MVC architecture.Here is my code I am using. At the viewpage.php I have: <pre><code><table> <td> <label>Sensors Types:</label> </td> <td> <?php echo form_dropdown('sensor_types', $sensor_types, '#', 'id="sensor_types" onchange="copy();" ');?> </td> <td>&nbsp;</td> <td>&nbsp;</td> <td> <label>Sensor Name:</label> </td> <td> <?php echo form_dropdown('sensorzs', $sensorzs, '#', 'id="sensorzs"'); ?> </td> </tr> </table> </code></pre> and the code in the model.php is <pre><code>function sensors_list($node_id) { $this->db->select('sensor_index, sensor_name'); $this->db->where('node_id', $node_id); //$this->db->where('sensor_type', $sensor_types); $this->db->order_by('sensor_index'); $query = $this->db->get('node_sensor_dtl'); } function get_all_sensors($node_id) { $this->db->select('sensor_pk, sensor_name'); $this->db->where('node_id', $node_id); $this->db->order_by('sensor_index'); $query = $this->db->get('node_sensor_dtl'); $sensors = array(); if($query->result()) { $sensors[''] = '-Select-'; foreach ($query->result() as $sensor) { $sensors[$sensor->sensor_pk] = $sensor->sensor_name; } return $sensors; } else { $sensors = NULL; return $sensors; } } </code></pre> and the code in the node.php the code is like this <pre><code>function edit(){ if($this->CI->input->post('editform_id') == NULL) redirect('configuration/node/'); $view_data['page_title'] = "Node edit details"; $view_data['page_name'] = ""; $view_data['detail'] = $this->CI->model->get_node($this->CI->input->post('editform_id')); $view_data['sensor_types'] = $this->CI->model->get_all_sensor_types(); $view_data['sensorzs'] = $this->CI->model->sensors_list($this->CI->input->post('editform_id')); $this->CI->load->view('config_node_view', $view_data); } </code></pre> I´ve tried this for past few days but could get the result. Searched lot of site and blogs but I can't get the required results. 
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Dropdown dependent on other dropdown in php
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1. PTQuestion
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1. USAna
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1. USAshoka
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1. PO
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 PODropdown dependent on other dropdown in php
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