php 如何在wordpress插件中将表单提交到另一个页面
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how to submit a form to another page in wordpress plugin
提问by Mushfiqul Tuhin
I am developing a wordpress plugin , which submits a form to another page. But when I try to submit the form to another page , then that page returns some php error. My form code is below
我正在开发一个 wordpress 插件，它将表单提交到另一个页面。但是当我尝试将表单提交到另一个页面时，该页面会返回一些 php 错误。我的表单代码如下
echo "<form action='".plugins_url()."/wp_voting_poll/frontend_poll_process.php' method='post'>";
echo "<input type='hidden' name='hide' value='$ques' />";
$total_vote_count = $wpdb->get_var( "SELECT COUNT(*) FROM $table_result WHERE question_uid='$ques'" );
if($ques!=""){
echo "<table>";
foreach($ans_data as $ans_res){
// $ans=$ans_res->answer;
$answer_id=$ans_res->id;
$type=$ans_res->answer_type;
$vote_count = $wpdb->get_var( "SELECT COUNT(*) FROM $table_result WHERE answer_id='$answer_id'" );
if($vote_count==0){
error_reporting(0);
}
$vote_percent=($vote_count*100)/$total_vote_count;
echo "<tr> <td>";
echo "<div class='answer_div'>";
if($type==1){
echo "<div class='input'><input type='radio' name='ans_name[]' value='$answer_id'/>".$ans_res->answer."<br/></div>";
}
elseif($type==0){
echo "<div class='input'><input type='checkbox' name='ans_name[]' value='$answer_id'/>".$ans_res->answer."<br/></div>";
}
if($backend==0){
echo "</td> <td>";
echo "<h4> total vote counted $vote_percent% </h4>";
// echo "<img src='$url' width='$width_img'/>";
$bar=$vote_percent*5.9;
echo "<img src='$url' height='10' width='$bar' />";
echo "</td></tr>";
}
}
echo "</table>";
echo "<input type='submit' value='Submit vote' />";
echo "</form>";
And this is my code of another page , which should process the form . But unfortunately it returns php error.
这是我的另一个页面的代码，它应该处理表单。但不幸的是它返回 php 错误。
<?php
require_once("function_ip.php");
$vote_result=$_POST['ans_name'];
$uid=uniqid();
global $wpdb;
$table_vote=$wpdb->prefix."poll_answer_result";
$count=count($vote_result);
$hidden=$_POST['hide'];
$ans_data=$wpdb->get_results("SELECT * FROM $table_vote WHERE question_id='$hidden'" );
if($count>0){
foreach($vote_result as $vote_arr){
$wpdb->insert($table_vote,
array('answer_id' => $vote_arr,
'ip' =>get_client_ip(),
'question_uid' => $hidden
));
}
}
?>
回答by David Gard
Wordpress has a generic handler to deal with all forms - admin-post.php.
Wordpress 有一个通用处理程序来处理所有表单 - admin-post.php.
If you include a hidden field in your form called action, you can then hook in to a function of your choice with all the goodness of wordpress included.
如果您在表单中包含一个名为 的隐藏字段action，则您可以连接到您选择的功能，其中包含 wordpress 的所有优点。
echo "<form action='".get_admin_url()."admin-post.php' method='post'>";
echo "<input type='hidden' name='action' value='submit-form' />";
echo "<input type='hidden' name='hide' value='$ques' />";
{ Enter the rest of your first block of code from above here }
echo "</form>";
And then in your functions.phpfile (or any other phpfile that you have included via functions.php), you can use this method.
然后在您的functions.php文件（或php您通过 包含的任何其他文件functions.php）中，您可以使用此方法。
add_action('admin_post_submit-form', '_handle_form_action'); // If the user is logged in
add_action('admin_post_nopriv_submit-form', '_handle_form_action'); // If the user in not logged in
function _handle_form_action(){
{ Enter your second block of code from above here }
}
I'm not sure if you require a redirect once you reach your desired destination, but that can be easily accounted for if you do.
我不确定到达所需目的地后是否需要重定向，但如果这样做，这很容易解决。
And one final question - is this form on the front end, or in the admin area? Not that it should make a difference that this answer, I'm just curious...
最后一个问题 - 这个表单是在前端还是在管理区域？并不是说这个答案应该有所作为，我只是很好奇......
回答by RRikesh
Your frontend_poll_process.phppage is getting called out of the WordPress environment, therefore returning an error on $wpdb->get_results().
您的frontend_poll_process.php页面被 WordPress 环境调用，因此在 上返回错误$wpdb->get_results()。
You can add your code to a plugin or functions.phpusing hooks:
您可以将代码添加到插件或functions.php使用钩子：
<?php
add_action( 'after_setup_theme', 'so_19997913' );
function so_19997913() {
require_once("function_ip.php");
$vote_result = $_POST['ans_name'];
$uid = uniqid();
global $wpdb;
$table_vote = $wpdb->prefix . "poll_answer_result";
$count = count( $vote_result );
$hidden = $_POST['hide'];
$ans_data = $wpdb->get_results( "SELECT * FROM $table_vote WHERE question_id='$hidden'" );
if ( $count > 0 ) {
foreach ( $vote_result as $vote_arr ) {
$wpdb->insert( $table_vote, array('answer_id' => $vote_arr,
'ip' => get_client_ip(),
'question_uid' => $hidden
) );
}
}
}
