我跑過這個問題,我正在嘗試過去的幾個小時 我有一個圖像上傳一些細節存儲在分貝。codeigniter更新圖像不重新上傳
我存儲細節和圖像路徑,像魅力一樣工作。現在來編輯部分。 我試圖檢查輸入文件是否爲空,如果是這樣,只更新細節,否則刪除圖像並重新上傳新圖像。問題是這樣的:
如果輸入文件是空的,它更新一切沒有問題,如果不是空它正在更新細節,但圖像是相同的,不會被刪除或重新上傳。 這裏是代碼
$image_input = $this->input->post('image');
if(isset($image_input) && !empty($image_input))
{
$this->db->where('id', $id);
$img = $this->db->get('menus_category', 1);
if($img->num_rows() > 0)
{
$row = $img->row();
$original_image = $row->image;
$desktop_image = $row->desk_img;
$mobile_image = $row->mob_img;
$thumb_image = $row->thumb;
$unlink_image = unlink('./uploads/menus/' . $original_image);
$unlink_desk = unlink('./uploads/menus/desk/' . $desktop_image);
$unlink_mob = unlink('./uploads/menus/mobile/' . $mobile_image);
$unlink_thumb = unlink('./uploads/menus/thumbs/' . $thumb_image);
if($unlink_desk && $unlink_image && $unlink_mob && $unlink_thumb)
{
$config = array(
'upload_path' => './uploads/menus',
'allowed_types' => 'gif|jpg|jpeg|png',
'max_size' => '15000'
);
$this->upload->initialize($config);
if ($this->upload->do_upload('image'))
{
$image_data = $this->upload->data();
$this->load->library('image_lib');
// thumb resize
$thumbnail = 'thumb_' . $image_data['file_name'];
$thumb = array(
'image_library' => 'GD2',
'source_image' => $image_data['full_path'],
'new_image' => $image_data['file_path'] . 'thumbs/' . $thumbnail,
'maintain_ratio' => TRUE,
'width' => '90',
'height' => '90'
);
$this->image_lib->initialize($thumb);
$this->image_lib->resize();
$this->image_lib->clear();
// mobile resize
$mob = 'mob_' . $image_data['file_name'];
$thumb_mob = array(
'image_library' => 'GD2',
'source_image' => $image_data['full_path'],
'new_image' => $image_data['file_path'] . 'mobile/' . $mob,
'maintain_ratio' => FALSE,
'width' => '290',
'height' => '83'
);
$this->image_lib->initialize($thumb_mob);
$this->image_lib->resize();
$this->image_lib->clear();
// desktop resize
$desk = 'desk_' . $image_data['file_name'];
$thumb_desk = array(
'image_library' => 'GD2',
'source_image' => $image_data['full_path'],
'new_image' => $image_data['file_path'] . 'desk/' . $desk,
'maintain_ratio' => FALSE,
'width' => '700',
'height' => '200'
);
$this->image_lib->initialize($thumb_desk);
$this->image_lib->resize();
$this->image_lib->clear();
// insert path and details to database
$data = array(
'title' => $input['title'],
'slug' => $this->_check_slug($input['title']),
'description' => $input['description'],
'image' => $image_data['file_name'],
'desk_img' => $desk,
'mob_img' => $mob,
'thumb' => $thumbnail
);
$this->db->where('id', $id);
return $this->db->update('menus_category', $data);
}
else
{
echo $this->image_lib->display_errors();
}
}
}
}
else
{
$data2 = array(
'title' => $input['title'],
'slug' => $this->_check_slug($input['slug']),
'description' => $input['description']
);
$this->db->where('id', $id);
return $this->db->update('menus_category', $data2);
}
注:else語句工作正常,但第一,如果問題。現在我改變了if if is(isset($ image_input))...並且如果文件輸入不是空的,則重新上傳圖片並更新細節,但是如果我只更新沒有圖片的細節,它將刪除已經上傳並且沒有更新的圖片。 (我認爲這是問題,但我不知道如何解決它)。
如果你想給我一些幫助或讓我在正確的方向,我會感激。 謝謝你們
在那裏的任何善良的人? – lesandru