如何根据数据库值选中或取消选中复选框状态？

问题描述：

I have two tables like below:-

1. document_master                    
------------------                             
document_id   |  document_name      
------------------                             
1             | BirthCertifcate                 
2             | AadharCard      


2. student_document_detail                  
------------------                             
student_document_id |  student_id  | document_id | file_name | IsActive
------------------                             
1                   |     55       | 1           | 55_b.jpg    |    1  
2                   |     55       | 2           | 55_a.jpg    |    1
3                   |     70       | 2           |             |    0
4                   |     70       | 2           | 56_b.jpg    |    1

I have a form like below:-

here is my function to create form:-

public function get_student_document_details(){
    if (!$this->input->is_ajax_request()) {
        exit('No direct script access allowed');
    }


    //here i want to check if document already in table or not on this basis make status checkbox checked or unchecked
    $student_document_records = $this->mdl_student_document_upload->get_student_document_list($student_id);

    //get the document master list
    $records = $this->mdl_student_document_upload->get_document_master_list();
    $document_master_list = '';
    $sr_no = 1;
    foreach($records as $row){
        $document_master_list .='<tr>
                                    <td>'.$sr_no.'</td>
                                    <td width="100"><span style="margin-top:0;" class="btn btn-default btn-file btn-xs">
                                                    Upload <input name="student_document" id="student_document" type="file">
                                                </span></td>
                                    <td width="100"><button  class="btn btn-xs btn-danger">Remove</button></td>
                                    <td>
                                    <input type="hidden" name="document_name" id="document_name" value="'.$row->DocumentName.'"/>
                                    <input type="hidden" name="document_master_id" id="document_master_id" value="'.$row->DocumentMasterID.'"/>
                                    '.$row->DocumentName.'
                                    </td>
                                    <td><input type="checkbox" name="status" id="status"/></td>
                                </tr>';
        $sr_no++;
    }
    die(json_encode($document_master_list));
}

My questions are:-

if document exists in student_document_detail table then make status checkbox checked.
if not or IsActive field 0 then make checkbox unchecked.
How to generate document upload form based on these conditions. Any help appreciated!. Thanks in advance.

答

Try

if($row->IsActive==1)
{
    echo '<td><input type="checkbox" checked="checked" name="status" id="status"/></td>';
}
else
{
    echo '<td><input type="checkbox" name="status" id="status"/></td>;
}

答

Try This May it help you

if($row->IsActive==1) {
  <td><input type="checkbox" checked="checked" name="status" id="status"/></td>
 }
else{
  <td><input type="checkbox" name="status" id="status"/></td>
}

答

Try This

<td><input type="checkbox" <?php if($row->IsActive==1) { echo "checked" } ?> name="status" id="status"/></td>

答

Do something like this.

<input type="checkbox" name="status" id="status" checked="<?php if($row->IsActive == 1){<text>true</text>}else{<text>false</text>}  ?>"/>

答

you can try this one to check weather it is active or not

<td><input type="checkbox" <?php echo $row->IsActive==1) ? "checked": '' ;?> name="status" id="status"/></td>

note

I have used short if else . you can know more about this if not familiar if else short

如何根据数据库值选中或取消选中复选框状态？

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