我正在 PHP 8.2.12 上的 Codeigniter 3.1.9 中开发一个项目。
我的问题是我有很多动态数据，这些数据被带入静态视图以创建多个页面。我遇到的问题是，如果不创建自己的 PDF 库，或者每个页面都相同，我需要为每个页面实例引入不同的打印样式表。我可以一次性引入所有不同的样式表，因此每次加载页面时它们都会加载，但这感觉有点笨拙且不必要。
因此，我希望的解决方案是使用 PHP 根据拉入的记录动态加载不同的样式表。我已经通过对管理元素和样式进行管理员检查来做到这一点，效果非常好。然而，这些实例加载到固定视图中相当静态的样式表和元素中。
这是配方控制器：
<?php
class Recipe extends BaseController{
function __construct(){
parent::__construct();
// Loading in Pagination Library
$this->load->library('pagination');
// Loading in Recipe_model
$this->load->model('recipe_model');
$uri = $this->uri->uri_string();
$this->session->set_flashdata('uri', $uri);
}
function index(){
$recipe_linkname = $this->uri->rsegment(3);
if(!$recipe_linkname){
$recipe_linkname = $this->recipe_model->first_linkname();
}
$recipe = $this->recipe_model->read_record($recipe_linkname);
if(count($recipe) == 0){
show_404('');
die();
}
$data = array(
'title' => "Shirley's Recipes:".$recipe['name'],
'columns' => array('toc', 'recipe'),
'recipe' => $recipe,
'updated' => $this->format_date($recipe['updated'])
);
$this->load->view('templates/main', $data);
}
function flipbook(){
// Requires the user to be "logged in"
$this->require_login();
// Recipe Flipbook Pagination Configuration
$config['base_url'] = site_url('recipe/flipbook');
$config['total_rows'] = $this->recipe_model->num_rows();
$config['uri_segment'] = '3';
$config['per_page'] = 1;
$config['num_links'] = 9; // You will see 10 numerical link buttons in paginnation.
$config['display_pages'] = TRUE;
$config['full_tag_open'] = '<div id="pagination" class="grid-item3">';
$config['full_tag_close'] = '</div>';
// Initialize the Pagination Library
$this->pagination->initialize($config);
$recipe = $this->recipe_model->read_records($config['per_page'], $this->uri->segment(3))->row_array();
$data = array(
'title' => "Shirley's Recipes:".$recipe['name'],
'columns' => array('toc', 'admin/page/recipe_flipbook'),
'recipe' => $recipe,
'updated' => $this->format_date($recipe['updated'])
);
$this->load->view('templates/main', $data);
}
function search(){
if($this->input->method() === 'post'){
$search = $this->input->post('query'); //modify here:
$results = $this->recipe_model->search($search);
$page = $this->uri->segment(3);
$perPage = 19;
$results = $this->recipe_model->search($search, $page, $perPage);
$data = array(
'title' => "Shirley's Recipes:Search Results",
'columns' => array('toc', 'public/page/search_results'),
'recipes' => $results, // $results is being renamed $recipes. I don't really know why though yet...
'search' => $search
);
$this->load->view('templates/main', $data);
}
else{
redirect('recipe');
}
}
function add(){
// Requires the user to be "logged in"
$this->require_login();
if($this->input->post('submit')){
$data = array(
'id' => $this->input->post('id'),
'name' => $this->input->post('name'),
'buttontext' => $this->input->post('buttontext'),
'linkname' => $this->input->post('linkname'),
'time' => $this->input->post('time'),
'category' => $this->input->post('category'),
'subcategory' => $this->input->post('subcategory'),
'img' => $this->input->post('img'),
'keywords' => $this->input->post('keywords'),
'ingredients' => $this->input->post('ingredients'),
'equipment' => $this->input->post('equipment'),
'prepreparation' => $this->input->post('prepreparation'),
'directions' => $this->input->post('directions')
);
$recipeid = $this->recipe_model->create_record($data);
redirect('recipe/'.$this->input->post('linkname'));
}
else{ // If the IF statement returns false, then the ELSE statement tells php to do something else.
$data = array(
'title' => "Shirley's Recipes:Add New Recipe",
'columns' => array('toc', 'admin/edit-page/recipe_edit'),
'recipe' => array(
'id' => '',
'name' => '',
'buttontext' => '',
'linkname' => '',
'time' => '',
'category' => '',
'subcategory' => '',
'img' => '',
'keywords' => '',
'ingredients' => '',
'equipment' => '',
'prepreparation' => '',
'directions' => ''
)
);
$this->load->view('templates/main', $data);
}
}
function edit(){
// Requires the user to be "logged in"
$this->require_login();
$id = $this->uri->segment(3);
if($this->input->post('submit')){
$data = array(
'name' => $this->input->post('name'),
'buttontext' => $this->input->post('buttontext'),
'linkname' => $this->input->post('linkname'),
'time' => $this->input->post('time'),
'category' => $this->input->post('category'),
'subcategory' => $this->input->post('subcategory'),
'img' => $this->input->post('img'),
'keywords' => $this->input->post('keywords'),
'ingredients' => $this->input->post('ingredients'),
'equipment' => $this->input->post('equipment'),
'prepreparation' => $this->input->post('prepreparation'),
'directions' => $this->input->post('directions')
);
$this->recipe_model->update_record($id, $data);
redirect('recipe/'.$this->input->post('linkname'));
}
else{ // If the IF statement returns false, then the ELSE statement tells php to do something else.
$recipe = $this->recipe_model->read_record($id);
$data = array(
'title' => "Shirley's Recipes:Edit Recipe : ".$recipe['name'],
'columns' => array('toc', 'admin/edit-page/recipe_edit'),
'id' => $id,
'recipe' => $recipe
);
$this->load->view('templates/main', $data);
}
}
function delete(){
// Requires the user to be "logged in"
$this->require_login();
$this->recipe_model->delete_record($this->uri->segment(3));
redirect('/');
}
}
// End of recipe.php
?>
这是Recipe_model.php
<?php
class Recipe_model extends CI_Model{
function create_record($data){
if(isset($data['buttontext']) and $data['buttontext'] == ''){
$data['buttontext'] = NULL;
}
$this->db->insert('recipe', $data);
return $this->db->insert_id();
}
function read_records($limit, $offset){
$this->db->order_by('name', 'asc');
if(isset($limit) && isset($offset)){
$this->db->limit($limit, $offset);
}
$q = $this->db->get('recipe');
return $q;
}
function read_record($key){
if(is_numeric($key)){
$this->db->where('id', $key);
}
else{
$this->db->where('linkname', $key);
}
$q = $this->db->get('recipe');
return $q->row_array();
}
function first_linkname(){
$this->db->select('linkname, name');
$this->db->order_by('name', 'asc');
$this->db->limit(1);
$q = $this->db->get('recipe');
return $q->row()->linkname;
}
function read_names(){
$this->db->select('linkname, name');
$this->db->order_by('name', 'asc');
$q = $this->db->get('recipe');
return $q->result();
}
function read_names_categories(){
$this->db->select('buttontext, linkname, name, category, subcategory, img, time');
$this->db->order_by('name', 'asc');
$q = $this->db->get('recipe');
return $q->result();
}
function search($search, $currentPage = 1, $perPage = 19){
$offset = ($currentPage = 1) * $perPage;
$terms = explode(' ', $search);
$match = " ";
foreach($terms as $term){
$match .= $term;
}
$querystr = "SELECT id, name, category, subcategory, keywords, MATCH(name, category, subcategory, keywords) AGAINST('".$match."') as score FROM recipe WHERE MATCH(name, category, subcategory, keywords) AGAINST('".$match."') ORDER BY name LIMIT 60 OFFSET 0;";
$q = $this->db->query($querystr);
return $q->result();
}
function update_record($id, $data){
if(isset($data['buttontext']) and $data['buttontext'] == ''){
$data['buttontext'] = NULL;
}
$this->db->where('id', $id);
$this->db->update('recipe', $data);
}
function delete_record($id){
$this->db->where('id', $id);
$this->db->delete('recipe');
}
function num_rows(){
return $this->db->get('recipe')->num_rows();
}
}
// End of Recipe_model.php
?>
这是静态recipe.php视图
<link rel="stylesheet" type="text/css" href="/assets/css/public/page/recipe.css" media="screen" />
<link rel="stylesheet" type="text/css" href="/assets/css/public/page/print/printrecipe.css" media="print" />
<div id="sitecontent" class="grid-item2 grid-container">
<!-- Loads ADMIN items or CSS Stylesheets needed when logged in as ADMIN. -->
<?php
if($admin){
echo '<link rel="stylesheet" type="text/css" href="/assets/css/admin/core/admin.css" />';
echo '<link rel="stylesheet" type="text/css" href="/assets/css/admin/core/wmd.css" />';
echo '<link rel="stylesheet" type="text/css" href="/assets/css/admin/page/recipeadmin.css" />';
echo '<script type="text/javascript" src="/assets/js/wmd.min.js"></script><br>';
echo '<script type="text/javascript" src="/assets/js/showdown.js"></script><br>';
echo '<script type="text/javascript" src="/assets/js/confirmdelete.js"></script>';
$this->load->view('admin/nav/notesnav');
}
?>
<div id="contents" class="<?php if($admin){echo 'grid-item2';} ?> grid-item1 grid-container scrollbar">
<div id="spiral" class="grid-item1">
<img class="spiral" src="/assets/img/lines/spiral1trans.png"/>
</div>
<div id="recipe" class="grid-item2 grid-container">
<div id="title" class="grid-item1">
<?=$recipe['name']; ?>
<br>
<?=$recipe['time']; ?>
</div>
<div id="image" class="grid-item2">
<?=$recipe['img']; ?>
</div>
<div id="ingredients" class="grid-item3">
<h2>Ingredients:</h2>
<?php
if(isset($recipe['ingredients']) && $recipe['ingredients'] != ''){
echo $this->mkdn->translate($recipe['ingredients']);
}
else{
echo '<br><br><br><br><br><br><br><br><br><br><br>';
}
?>
</div>
<div id="equipment" class="grid-item4">
<h2>Equipment:</h2>
<?php
if(isset($recipe['equipment']) && $recipe['equipment'] != ''){
echo $this->mkdn->translate($recipe['equipment']);
}
else{
echo '<br><br><br><br><br><br><br><br><br><br><br>';
}
?>
</div>
<div id="prepreparation" class="grid-item5">
<h2>Pre-Preparation:</h2>
<?php
if(isset($recipe['prepreparation']) && $recipe['prepreparation'] != ''){
echo $this->mkdn->translate($recipe['prepreparation']);
}
else{
echo '<br><br><br><br><br><br><br><br><br><br><br>';
}
?>
</div>
<div id="directions" class="grid-item6">
<h2>Directions:</h2>
<?php
if(isset($recipe['directions']) && $recipe['directions'] != ''){
echo $this->mkdn->translate($recipe['directions']);
}
else{
echo '<br><br><br><br><br><br><br><br><br><br><br>';
}
?>
</div>
</div>
</div>
<?php
if(isset($updated)){
echo '<div id="updated" class="grid-item2">Updated '.$updated.'</div>';
}
if($admin){
echo '<div id="optionbuttons" class="grid-item noprint">';
echo anchor('recipe/edit/'.$recipe['id'], img(array('src'=>'assets/img/icons/edit.png', 'alt'=>'Edit', 'title'=>'Edit')));
echo ' ';
echo '<a href="javascript:confirmdelete(\'Delete recipe?\',\''.base_url().'recipe/delete/'.$recipe['id'].'\')">'.img(array('src'=>'assets/img/icons/delete.png', 'alt'=>'Delete', 'title'=>'Delete')).'</a>';
echo '</div>';
}
?>
</div>
<?php
if($admin){
echo '';
}
?>
我可以用 IF 语句来完成这个任务吗？我该如何设置它？
我尝试将样式表设置为单独加载，但是使用我编写的 if 语句，它们无论如何都会加载。
我的 if 语句看起来像这样：
<?php
if($recipe['linkname'] = 'gallonsizesweettea'){
echo '<link rel="stylesheet" type="text/css" href="/assets/css/public/page/print/recipes/printgallonsizesweettea.css" media="print" />';
}
if($recipe['linkname'] = 'applecobbler'){
echo '<link rel="stylesheet" type="text/css" href="/assets/css/public/page/print/recipes/printapplecobbler.css" media="print" />';
}
?>
我在这里缺少什么？预先感谢任何人可以提供的任何帮助！
我认为你的编码错误。
你必须这样做
$recipe['linkname'] == 'gallonsizesweettea'您的代码
$recipe['linkname'] = 'gallonsizesweettea') if($recipe['linkname'] == 'gallonsizesweettea'){
echo '<link rel="stylesheet" type="text/css" href="/assets/css/public/page/print/recipes/printgallonsizesweettea.css" media="print" />';
}
if($recipe['linkname'] == 'applecobbler'){
echo '<link rel="stylesheet" type="text/css" href="/assets/css/public/page/print/recipes/printapplecobbler.css" media="print" />';
}