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POdependent drop down list values from database
 

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  1. POdependent drop down list values from database
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    <p>I'm trying to create a drop down list of departments and based on this value the sub-department should show. I'm trying to get all values from database. I'm unable to pass values from one table to another so that the sub-department will show values as per the selected department field. I think may be I'm passing wrong value in the java script and at the <strong>onchange</strong> attribute. what should be the correct way to pass the value from one table to another? sorry for any formatting error.</p> <pre><code> function department() { global $con; $sql_dept=mysqli_query($con,"SELECT * FROM jsrao_dept"); echo"&lt;select id='test' name='dept_id' onchange='subdept().value'&gt;"; while($row_dept = mysqli_fetch_array($sql_dept)) { ?&gt;&lt;option value="&lt;?php $row_dept['Id'] ?&gt;"&gt;&lt;?php echo $row_dept["dept_name"]; ?&gt; &lt;/option&gt;&lt;?php } echo"&lt;/select&gt;"; } function subdepartment($id) { global $con; global $id_num; $sql_sdept=mysqli_query($con,"SELECT js.sub_name FROM jsrao_sdept AS js INNER JOIN jsrao_dept AS jd ON jd.Id=js.dept_id where js.dept_id=$id"); echo"&lt;select name='sdept_id'&gt;"; while($row_sdept = mysqli_fetch_array($sql_sdept)) { ?&gt;&lt;option value="&lt;?php $row_sdept['Id'] ?&gt;"&gt;&lt;?php echo $row_sdept["sub_name"]; echo"&lt;/option&gt;"; } echo"&lt;/select&gt;"; } &lt;script type="text/javasript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"&gt; function subdept(id) { &lt;?php subdepartment(id); ?&gt; } &lt;/script&gt; HTML Code: &lt;tr&gt; &lt;td&gt;Department&lt;sup style="color:red"&gt;*&lt;/sup&gt;-&lt;/td&gt; &lt;td&gt;&lt;?php department(); ?&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Sub-department-&lt;/td&gt; &lt;td&gt;&lt;?php $sql_dept=mysqli_query($con,"SELECT * FROM jsrao_dept"); $sql_1=mysqli_fetch_array($sql_dept); $id=$sql_1['Id'];echo $id; subdepartment($id) ?&gt;&lt;/td&gt; </code></pre>
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    1. COWhat is your HTML code?
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      1. POdependent drop down list values from database
      1. USkoljanep
    2. COYour are calling server side function directly in client side you need an ajax call
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      1. POdependent drop down list values from database
      1. USM Khalid Junaid
    3. CO@koljanep added the html code. its inside a table format. btw in the html code when i added sql query it is working but to some extent. now only the first field is visible for sub department
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