The values from the db are displaying in the dropdown and I've gotten it to work with text values that weren't pulled from the db, but when I try it with values from the db and click 'Submit' the page reloads and nothing happens.
My code:
<form action="test.php" method="post">
<br />
<label for="name">Choose a name</label><br />
<select name="selected_value">
$query = "SELECT * FROM items WHERE user_id = $user_id";
$select_items = mysqli_query($connection, $query);
confirmQuery($select_items);
while($row = mysqli_fetch_assoc($select_items)) {
$item_id = $row['item_id'];
$item_name = $row['item_name'];
echo "<option value='$item_name'>{$item_name}</option>";
</select>
<button type="submit" name="submit_form">Submit</button>
</form>
if(isset($_POST['submit_form'])){
$selected_value = $_POST['selected_value'];
echo $selected_value;
}
Don't you have this the wrong way around?
$_POST['selected_value'] = $selected_value;
should be
$selected_value = $_POST['selected_value'];
Related
I am currently creating a survey where the answers are entered into a database.
I have 2 main tables:
questions, with 2 columns: questionID and questionBody
answers, with 3 columns: answerID, questionID (I want this to be tied to the column in table questions) and answerBody.
On the HTML page I am planning to create there will be multiple questions with multiple text boxes to fill in correlating to each quesiton. Is it possible that when the person submits the form, the answers are inserted into table answers with the questionID being based on what field was filled out?
So for example, If I have questionBody as "What is this Question asking?" and the questionID as 1 in table questions, when I submit the form I want table answers to also have questionID 1 in there.
At the moment this is my code:
//Check if error variables have any values assigned
if (empty($answerError))
{
//Prepare database insert
$sql = "INSERT INTO answers (questionID, answerBody) VALUES (?,?)";
//Check if the statement has the connect and sql variables
if ($statement = mysqli_prepare($connect, $sql))
{
//Add variables to the statement
mysqli_stmt_bind_param($statement, "ss", $paramQuestion, $paramAnswer);
//Set the parameter to the answer
$paramQuestion = getQuestionName($connect);
$paramAnswer = $answer;
//Execute statement with entered variable
if (mysqli_stmt_execute($statement))
{
//Redirect user to success page
header("location: thankyou.php");
}
else
{
echo "Something went wrong. Please try again later.";
}
//Close statement
mysqli_stmt_close($statement);
}
}
and for the function getQuestionName():
function getQuestionName($connect)
{
$query = "SELECT * FROM questions";
$result = mysqli_query($connect, $query);
if ($result)
{
while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC))
{
$questionID = $row['questionID'];
return $questionID;
}
}
}
The code I am using to output the form into a HTML page is:
function getQuestions($connect)
{
$query = "SELECT * FROM questions";
$result = mysqli_query($connect, $query);
if ($result)
{
while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC))
{
$body = $row['questionBody'];
echo '<div class="entry">
<div class="questionTitle"><h3>' . $body . '</h3>
<form action="survey.php" method="POST">
<input type="text" name="answer" size="50" />
<input type="submit" value="Submit" name="submit" />
</form>
</div>
</div>';
}
}
Any help on this would be greatly appreciated :)
Yes it's completely possible. Just put the question ID as a hidden field in the form, and it will be submitted along with the answer data when the form is submitted. Then you can retrieve it from the $_POST data just like the answer, and use it in your SQL query.
For example:
HTML form:
<form action="survey.php" method="POST">
<input type="hidden" name="questionID" value="<?php echo $row["questionID"]; ?>" />
<input type="text" name="answer" size="50" />
<input type="submit" value="Submit" name="submit" />
</form>
survey.php:
$paramQuestion = $_POST["questionID"];
From your question, I will suggest you make use of input with a hidden attribute.
something like this
<input type='text' name='question-id' value="<?php echo $questionId ;?>" hidden>
The user doesn't see the input it get filled from whatever you are providing into it.
Editing your code, you should do something like this.
function getQuestions($connect)
{
$query = "SELECT * FROM questions";
$result = mysqli_query($connect, $query);
if ($result)
{
while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC))
{
$body = $row['questionBody'];
$questionId = $row['questionId'];
echo '<div class="entry">
<div class="questionTitle"><h3>' . $body . '</h3>
<form action="survey.php" method="POST">
<input type="text" name="answer" size="50" />
<input type="number"name="question-id" value="'.$questionId.'" hidden>
<input type="submit" value="Submit" name="submit" />
</form>
</div>
</div>';
}
}
In my database I have 2 tables:
To insert data, I have a form that populates dropdown options from the table formulation. This is what the insert form for formulation dropdown looks like:
<?php
$formulation = '';
$query = "SELECT * FROM formulation";
$result = mysqli_query($connect, $query);
while ($row = mysqli_fetch_array($result)) {
$formulation .= '<option value="' . $row["formulationID"] . '">' . $row["formulation_name"] . '</option>';
}
?>
<select>
<option value="">Select formulation</option>
<?php echo $formulation; ?>
</select>
Now I am working on the ‘Update’ form. But my question is how can I populate the ‘Formulation’ field dropdown with the data from the formulation table (like as the insert form) but pre-selected with the existing formulation value for the name from the items table? Like this image below:
I am having problem with how I should build the form. How should I proceed with this form?
<?php
$output = array('data' => array());
$sql = "SELECT * FROM items";
$query = $connect->query($sql);
while ($row = $query->fetch_assoc()) {
$output['data'][] = array(
$row['name'],
);
}
echo json_encode($output);
?>
<form action=" " method="POST">
<div>
<label>Name</label>
<input type="text"><br>
<label>Formulation</label>
<select >
<!--What should be the codes here? -->
</select>
</div>
<button type = "submit">Save changes</button>
</form>
Thanks in advance for your suggestion.
Note: I'm not a user of mysqli so maybe there will be some error, but you will get the idea. This will not tackle the update part, just the populate part
Since you are editing a certain item, I will assume that you have something to get the item's itemID.
<?php
$sql = "SELECT * FROM items WHERE itemID = ?";
$query = $connect->prepare($sql);
$query->bind_param("s", $yourItemID);
$query->execute();
$result = $query->fetch_assoc();
$itemName = $result['name'];
$itemFormulation = $result['formulation_fk'];
//now you have the name and the formulation of that certain item
?>
<form action=" " method="POST">
<div>
<label>Name</label>
<input type="text" value="<?php echo $itemName; ?>"><br>
<label>Formulation</label>
<select >
<?php
$query = "SELECT * FROM formulation";
$result = mysqli_query($connect, $query);
while ($row = mysqli_fetch_array($result)) {
?>
<option value="<?php echo $row['formulationID']; ?>" <?php echo ($row['formulationID'] == $itemFormulation) ? 'selected' : ''; ?>>
<?php echo $row['formulation_name']; ?>
</option>
<?php
}
?>
</select>
</div>
<button type = "submit">Save changes</button>
</form>
I changed the code to better suit the problem, there may be typos, just comment for clarification
If I have understand Your question... You have to put Your result into a string. For example:
<?php
$output = array('data' => array());
$sql = "SELECT * FROM items";
$query = $connect->query($sql);
$option = '';
while ($row = $query->fetch_assoc()) {
$name=$row['name'],
$option.='<option value="$name">$name</option>'
}
echo json_encode($output);
?>
<form action=" " method="POST">
<div>
<label>Name</label>
<input type="text"><br>
<label>Formulation</label>
<select >
<?=$option?>
</select>
</div>
<button type = "submit">Save changes</button>
</form>
I hope to be of help
This should do the trick:
<?php
$itemsSql = "SELECT * FROM items WHERE itemId = 5";
$itemQuery = $connect->query($sql);
$item = $itemQuery->fetch_assoc();
$formulationsSql = "SELECT * FROM formulation";
$formulationsQuery = $connect->query($sql);
$formulations = $itemQuery->fetch_assoc();
?>
<form action="updateItem" method="POST">
<div>
<label>Item Name</label>
<input type="text" value="<?= $item[0]['name']; ?>"><br>
<label>Formulation</label>
<select>
<?php foreach($formulations as $formulation){
echo '<option value="'. $formulation['formulationId'].'">' .
$formulation['formulation_name'] . '</option>';
} ?>
</select>
</div>
<button type = "submit">Save changes</button>
</form>
i want to echo selected parent value. but i am getting error- Notice: Undefined index:
How can i echo selected parent value then? Whats wrong i am doing?
$q = mysql_query("SELECT * FROM menu");
echo '<form action="" method="post">
Menu name:<input type="text" name="mname"><br>
<select>';
while ($row = mysql_fetch_array($q)) {
$menu_name = $row['menu_name'];
echo '<option value="'.$menu_name.'">'.$menu_name.'</option>';
}
echo '</select><br>
<input type="submit" name="submit" value="Add Menu">
</form>';
if (isset($_POST['submit'])) {
echo $mname = $_POST['mname'];
echo $parent = $_POST[$menu_name];
}
add name to the select box and get the value of select box by name.
Updated code:-
$q = mysql_query("SELECT * FROM menu");
echo '<form action="" method="post">
Menu name:<input type="text" name="mname"><br>
<select name="menu_name">';
while ($row = mysql_fetch_array($q)) {
$menu_name = $row['menu_name'];
echo '<option value="'.$menu_name.'">'.$menu_name.'</option>';
}
echo '</select><br>
<input type="submit" name="submit" value="Add Menu">
</form>';
if (isset($_POST['submit'])) {
echo $mname = $_POST['mname'];
echo $parent = $_POST['menu_name'];
}
$_POST[$menu_name] probably doesn't exist, because only two elements in your form have name attributes. The text input and the submit input.
option elements aren't posted as part of the form, but rather the selected option's value for the select element. But your select element has no name, therefore no key to use in the key/value pair, so it isn't posted.
Give the element a name:
<select name="someName">
Then in the POST, you would be able to fetch the selected value just as you do for any other form element:
$_POST['someName']
You need to add name attribute to select tag.
echo '<form action="" method="post">
Menu name:<input type="text" name="mname"><br>
<select name="any_name">';
$q = mysql_query("SELECT * FROM menu");
while ($row = mysql_fetch_array($q)) {
$menu_name = $row['menu_name'];
echo '<option value="'.$menu_name.'">'.$menu_name.'</option>';
}
echo '</select><br>
<input type="submit" name="submit" value="Add Menu">
</form>';
if (isset($_POST['submit'])) {
echo $mname = $_POST['mname'];
echo $select_option_name = $_POST['any_name'];
}
Note: mysql_* functions are depricated, use mysqli_* functions
hoping someone can help me out. I am trying to insert into a mysql db a value that a user selects from a dynamic dropdown
i can get the dynamic drop down to list the values properly. the table that the dynamic dropdown data comes from has 2 colums (fruit_id, FruitType) ... there are a total of 4 fruits currently listed in this table (and in my dropdown)
what I would like to do is display this drop down in a form and once a user selects a fruit, i would like to insert the (fruit_id) value of the selected fruit into another mysql table
here is what i have so far, for some reason no matter what I select in the dropdown the (fruit_id) that gets inserted is 4 (ps, I only have 4 fruits in my table/dropdown)
this is the code that I have so far, any suggestions are appreciated. thanks :)
<?php
require_once('../../../connect.php');
// dropdown
$fruit_type = '';
$sql = "SELECT fruit_id, FruitType from mydb.mytbl";
$stmt = $dbh->prepare($sql);
$stmt->execute();
$results = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach ($results as $row) {
$fruit_type.= '<option value="' . $row["fruit_id"] . '">' . $row["FruitType"] . '</option>';
}
if(isset($_POST['submit'])){
$errors = array();
require('validate.php');
if(!count($errors)){
$dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, 1);
$sql = "INSERT INTO fruittable
(fruit_id)
VALUES ('".$row['fruit_id']."');
";
$stmt = $dbh->prepare($sql);
$result = $stmt->execute();
}
}
if(isset($result)){
if($result){
}else{
echo '<b>Unable to Insert</b>';
print '<pre>'.print_r($stmt->errorInfo(), true);
}
}
?>
<h1>Log Fruit</h1>
<form method="post" action="add.php">
fruit type <br/>
<select name="fruit_select">
<option value=""</option>
<?php echo $fruit_type;?> <br/>
</select>
<p></p>
<br/>
<input type="submit" name="submit" value="Add" />
</form>
I fixed your PDO. you have to bind the parameters in PDO.
Here is how you would have the code display each option:
<?php
require_once('../../../connect.php');
if ($_POST['submit']) {
$fruitid=$_POST['fruit_select'];
$insertsql = "INSERT INTO fruittable (fruit_id) VALUES (:fruitid)";
$stmt = $dbh->prepare($insertsql);
$stmt->bindParam(':fruitid', $fruitid);
$stmt->execute();
}
$fruit_type = '';
$sql = "SELECT fruit_id, FruitType FROM table";
$stmt = $dbh->prepare($sql);
$stmt->execute();
?>
<h1>Log Fruit</h1>
<form method="post" action="add.php">
fruit type <br/>
<select name="fruit_select">
<option value=""</option>
<?php
while ($row = $stmt->fetch()) {
echo "<option value='".$row['fruit_id']."'>".$row['FruitType']."</option>";
}
?>
</select>
<br/>
<input type="submit" name="submit" value="Add" />
</form>
Using this code in a page called add.php should do what you are wanting. It will list the fruits and whenever you select a fruit and click Add/Submit button it'll add it to the database.
I have this code in a loop in my code, The loop makes one submit button for every member found. I need each button to have the members name stored in it, in a way it can be sent though post when that button is clicked. Im not sure if this is possible with post but i was trying a way i do it with URLS. Does anyone know how to do this?
<input type="submit" value="Attack" name="Attack?name=<?php echo $Member_name; ?>" />
<?php
if(isset($_POST['Attack'])){
$sql = "SELECT * FROM users WHERE name='".mysql_real_escape_string($_GET['name'])."'";
$query = mysql_query($sql) or die(mysql_error());
$row = mysql_fetch_object($query);
}
Here is the whole code i was trying to store it in a hidden form but it only grabs the last member found and wont get others.
<?php
$sql = "SELECT name, rank FROM users ORDER BY rank DESC"; // Searches the database for every one who has being last active in the last 5 minute
$query = mysql_query($sql) or die(mysql_error());
$count = mysql_num_rows($query);
$i = 1;
while($row = mysql_fetch_object($query)) {
$Member_name = htmlspecialchars($row->name);
$Member_level = htmlspecialchars($row->rank);
?>
<td><?php echo $i; ?></td>
<td><?php echo $Member_name; ?></td><td><?php echo $Member_level; ?></td><td>
<input type="hidden" name="thename" value="<?php echo $Member_name; ?>">
<input type="submit" value="Attack" name="Attack" />
</td>
<?
if($i != $count) { // this counts the amount of people that are online and display the results.
echo "</tr><tr>";
}
$i++;
}
?>
<?php
if(isset($_POST['Attack'])){
$sql = "SELECT * FROM users WHERE name='".mysql_real_escape_string($_POST['thename'])."'";
$query = mysql_query($sql) or die(mysql_error());
$row = mysql_fetch_object($query);
$profile_id = htmlspecialchars($row->id);
$profile_userip = htmlspecialchars($row->userip);
$profile_name = htmlspecialchars($row->name);
$profile_money = htmlspecialchars($row->money);
$profile_gang = htmlspecialchars($row->gang);
$profile_exp = htmlspecialchars($row->exp);
$profile_profile = htmlspecialchars($row->profile);
$profile_rank = htmlspecialchars($row->rank);
$profile_health = htmlspecialchars($row->health);
$profile_defence = htmlspecialchars($row->defence);
$profile_stanima = htmlspecialchars($row->stanima);
?>
OK, assuming everything else is working ok, and you are retrieving data.
Change this:
<input type="hidden" name="thename" value="<?php echo $Member_name; ?>">
<input type="submit" value="Attack" name="Attack" />
To this:
<form method="POST" action="">
<input type="hidden" name="name" value="<?php echo $Member_name; ?>">
<input type="submit" value="Attack" name="Attack" />
</form>
And also in your PHP, change this line:
$sql = "SELECT * FROM users WHERE name='".mysql_real_escape_string($_GET['name'])."'";
To:
$sql = "SELECT * FROM users WHERE name='".mysql_real_escape_string($_POST ['name'])."'";
This isn't the best way to do this, you will be generating loads of HTML elements depending how many users you have, but it should solve you problem (providing everything else is working and receiving data).
HTML 5 & Javascript would be perfect for this and is something you should look into.