我正在编写一个应用程序，允许我的妻子将她的食谱添加到我已设置的数据库中。我有一个表单设置文本和图像的文件输入。它工作正常，她可以将文本和图像上传到数据库。现在，我正在尝试添加一个功能，以便她可以编辑它。它是完全相同的形式，只有数据进入不同的PHP文件进行处理。当她点击“编辑”按钮时，它会使用从服务器提取的数据填充所有文本输入，并且可以进行编辑。如果她愿意，她也可以添加一张新照片。尽管它是相同的形式，但它不会上传图像。文本上传很好，但是当我查看发送到服务器的对象$_POST['recipeImage']）时，recipeImage: ""始终为空;
我很困惑，不明白为什么这不起作用。这是代码：
HTML表格（图片上传是底部）：
<div id="editRecipeModal">
<div class="col-md-8">
<div class="card">
<form action="../PHP/modify_recipe.php" method="POST" role="form" class="form-horizontal" enctype="multipart/form-data" id="editRecipeForm" name="editRecipeForm">
<input class="form-control" type="hidden" value="" id="creatorIdEdit" name="creatorId">
<input class="form-control" type="hidden" value="" id="recipeIdEdit" name="recipeId" value="">
<div class="card-header card-header-text" data-background-color="purple">
<h4 class="card-title"><i class="far fa-edit"></i> Edit Recipe</h4>
</div>
<div class="card-content"
<div class="row">
<label class="col-sm-2 label-on-left">Recipe Name</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<input class="form-control" type="text" name="name" maxlength="150" id="editRecipeName" required>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Prep Time</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<input class="form-control" type="number" name="prepTime" id="editPrepTime" required>
<span class="help-block">Numbers Only. In minutes... ie: 120 Minutes</span>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Servings</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<input class="form-control" type="number" name="servings" id="editServings" required>
<span class="help-block">Numbers Only...</span>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Calories</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<input class="form-control" type="number" name="calories" id="editCalories" required>
<span class="help-block">Numbers Only</span>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Brief Description</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<textarea class="form-control" name="description" id="editBriefDescription" rows="5" required></textarea>
</div>
</div>
</div>
<hr>
<div class="row">
<label class="col-sm-2 label-on-left">Ingredients</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<textarea class="form-control" name="ingredients" id="editPasteIngredientsShow" rows="20" required></textarea>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Recipe Steps</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<textarea class="form-control" name="directions" id="editPasteStepsShow" rows="20" required></textarea>
</div>
</div>
</div>
<div class="row">
<label class="col-sm-2 label-on-left">Search Tags</label>
<div class="col-sm-9">
<div class="form-group label-floating is-empty">
<label class="control-label"></label>
<input class="form-control" type="text" id="editTags" name="tags" required>
</div>
</div>
</div><br> <br> <br> <br>
<div class="row">
<div class="col-md-12">
<div class="row">
<div class="col-lg-4 col-md-6 col-sm-3">
<select class="selectpicker" data-style="btn btn-primary btn-round" title="vegOrVegan" data-size="7" id="vegOrVeganEditSelect">
<option disabled selected>Dietary Restrictions</option>
<option value="" name="">None</option>
<option value="T" name="T">Vegetarian</option>
<option value="VG" name="VG">Vegan</option>
</select>
<input type="hidden" id="vegOrVeganEdit" name="vegOrVegan">
</div>
<div class="col-lg-4 col-md-6 col-sm-3">
<select class="selectpicker" id="suggestedPairingEditSelect" data-style="btn btn-primary btn-round" title="Suggested Pairing" data-size="7">
<option disabled selected>Suggested Pairing</option>
<option value="" name="">None</option>
<option value="B" name="B">Beer</option>
<option value="WW" name="WW">White Wine</option>
<option value="RW" name="RW">Red Wine</option>
</select>
<input type="hidden" id="suggestedPairingEdit" name="suggestedPairing" value="">
</div>
<div class="col-lg-4 col-md-6 col-sm-3">
<select class="selectpicker" id="" data-style="btn btn-primary btn-round" title="Some Other Attributes" data-size="7">
<option disabled selected>Some Other Attributes</option>
<option value="" name="">None</option>
<option value="B" name="B">Beer</option>
<option value="WW" name="WW">White Wine</option>
<option value="WW" name="WW">Red Wine</option>
</select>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-12" style="text-align: center;">
</div>
</div>
<div class="row" style="width: 80%; margin: 0 auto;">
<div class="col-sm-4"></div>
<div class="col-sm-4" style="text-align: center;">
<div class="fileinput fileinput-new text-center" data-provides="fileinput">
<div class="fileinput-new thumbnail">
<img src="../assets/img/placeholder.jpg" alt="...">
</div>
<div class="fileinput-preview fileinput-exists thumbnail"></div>
<div>
<span class="btn btn-rose btn-round btn-file">
<span class="fileinput-new">Select image</span>
<span class="fileinput-exists">Change</span>
<input type="file" name="recipeImage" id="recipeImageEdit" />
</span>
<a href="#pablo" class="btn btn-danger btn-round fileinput-exists" data-dismiss="fileinput"><i class="fa fa-times"></i> Remove</a>
</div>
</div>
</div>
<div class="col-sm-4"></div>
</div>
<br><br>
<div class="row">
<div class="col-sm-2"></div>
<div class="col-sm-4" style=" text-align: center; margin: 0; padding: 0;"><button class="btn btn-primary btn-lg modRecButton" type="submit" id="submitRecipe">Submit Changes</button></div>
<div class="col-sm-4 closePanel" style="text-align: center; margin: 0; padding: 0;" id="closePanel"><button type="button" class="btn btn-default btn-lg">Cancel Changes</button>
</div>
<div class="col-sm-2"></div>
</div>
</div>
</form>
</div>
</div>
</div>
AJAX代码
$(document).ready(function(e) {
$("#editRecipeForm").on('submit', (function(e) {
e.preventDefault();
$.ajax({
url: "../PHP/modify_recipe.php",
type: "POST",
data: new FormData(this),
cache: false,
contentType: false,
processData: false,
success: function(response) {
let parsedResponse = JSON.parse(response);
let newObject = parsedResponse[0]
if (parsedResponse == 'notModified') {
showErrorModal();
}else{
reBuildAfterObjectChange(newObject.recipeId, parsedResponse);
}
},
error: function() {
showErrorModal();
}
});
}));
});
PHP代码
<?php
include 'db_operations.php';
if(isset($_POST['name'])&& isset($_POST['description']) && isset($_POST['ingredients'])&& isset($_POST['directions']) && isset($_POST['suggestedPairing']) && isset($_POST['prepTime']) && isset($_POST['servings']) && isset($_POST['calories']) && isset($_POST['vegOrVegan']) && isset($_POST['recipeId']) && isset($_POST['creatorId']))
{
$result = '';
$name = $_POST['name'];
$description = $_POST['description'];
$ingredients = $_POST['ingredients'];
$ingredients = str_replace(';', '-', $ingredients);
$ingredients = str_replace('\n', ';', $ingredients);
$directions = $_POST['directions'];
$directions = str_replace(';', '-', $directions);
$directions = str_replace('\n', ';', $directions);
$suggestedPairing = $_POST['suggestedPairing'];
$prepTime = $_POST['prepTime'];
$servings = $_POST['servings'];
$calories = $_POST['calories'];
$vegOrVegan = $_POST['vegOrVegan'];
$recipeId = $_POST['recipeId'];
$creatorId = $_POST['creatorId'];
$tags = $_POST['tags'];
$time=time();
$lastModified = (date("Y-m-d H:i:s", $time));
modifyRecipe_recipes($name, $description, $ingredients, $directions, $suggestedPairing, $prepTime, $servings, $calories, $vegOrVegan, $lastModified, $creatorId, $recipeId, $tags);
}
if(isset($_POST['recipeImage'])){
$size = $_FILES['recipeImage']['size'];
if($size > 0){
$tmp_dir = $_FILES["recipeImage"]["tmp_name"];
$tmpImg = $_FILES['recipeImage']['name'];
$ext = strtolower(pathinfo($tmpImg, PATHINFO_EXTENSION));
$recipeImage = rand(10000, 10000000).".".$ext;
move_uploaded_file($tmp_dir, "../userRecipeImages/".$recipeImage);
$sql = 'UPDATE recipes SET recipeImage = :recipeImage WHERE creatorId = :creatorId AND recipeId= :recipeId';
$stmt = $conn->prepare($sql);
$stmt->bindParam(':creatorId', $creatorId, PDO::PARAM_STR);
$stmt->bindParam(':recipeImage', $recipeImage, PDO::PARAM_STR);
$stmt->bindParam(':recipeId', $recipeId, PDO::PARAM_STR);
$stmt->execute();
}
}
$modifiedRecipeDate = getLastModified_recipes($lastModified, $creatorId);
if ($modifiedRecipeDate === $lastModified) {
$newObject = getSingleRecipeById_recipes($recipeId, $creatorId);
echo json_encode($newObject);
}
else {
$result = "notModified";
echo json_encode($result);
}
?>
答案 0 :(得分：1)
您显然忘了将$_POST['recipeImage']更改为$_FILES['recipeImage']
文件包含在$_FILES全局变量$_POST
更改此
if(isset($_POST['recipeImage'])){
到
if(isset($_FILES['recipeImage'])){