Загрузка файла формы Codeigniter

Question

Я получаю эту ошибку при попытке обновить файл в своей форме ... «Вы не выбрали файл для загрузки». ... и проблема заключается в том, что я действительно выбрать новый файл для загрузки ... помочь мне пожалуйста, я не понимаю, что происходит ... Вот мой код:

ФОРМЫ

<form class="col s12" id="update_form" required="" enctype="multipart/form-data" aria-required="true" name="update_form" method="post" > 
     <div class="row"> 
     <div class="input-field col s6"> 
      <input id="update_name" type="text" required="" aria-required="true" name="name" class="validate"> 
      <label for="first_name">Nombre</label> 
     </div> 
     <div class="input-field col s6"> 
      <input id="update_last_name" name="lastname" required="" aria-required="true" type="text" class="validate"> 
      <label for="last_name">Apellido</label> 
     </div> 
     </div> 
     <div class="row"> 
     <div class="input-field col s6"> 
      <input id="update_side" type="text" required="" aria-required="true" name="side" class="validate"> 
      <label for="partido">Partido</label> 
     </div> 
     <div class="input-field col s6"> 
      <input id="update_charge" type="text" required="" aria-required="true" name="charge" class="validate"> 
      <label for="cargo">Cargo</label> 
     </div> 
     </div> 
     <div class="row"> 
      <div class="input-field col s6"> 
       <div class="file-field input-field no-margin-top"> 
        <div class="btn light-blue darken-4"> 
        <span>Animación/Imagen</span> 
        <input type="file" name="animation"> 
        </div> 
        <div class="file-path-wrapper"> 
        <input class="file-path validate" id="animation" name="animation" type="text"> 
        </div> 
       </div> 
      </div> 

      <div class="input-field col s6"> 
      <select id="update_section" required="" aria-required="true" name="section" autocomplete="off"> 
       <option value="" disabled selected>Seleccione una opción</option> 
       <option value="1">Presidencia</option> 
       <option value="2">Senadores</option> 
       <option value="3">Diputados</option> 
      </select> 
      <label>Sección</label> 
      </div> 
     </div> 
     <input type="hidden" name="update_politic_hide" id="update_politic_hdn" value=""> 
    </form> 

CONTROLLER

public function update_politic(){ 

    $this->load->model("politic"); 
    $params; 

    if ($this->input->is_ajax_request()) { 

    if (empty($this->input->post("animation"))){ 
     echo "first"; 
      $data = $this->politic->get_file_name($this->input->post("update_politic_hide")); 
      $file = $data->POLITIC_FILE;//recupero el nombre de la imagen 

      $params["name"] = $this->input->post("name"); 
      $params["lastname"] = $this->input->post("lastname"); 
      $params["side"] = $this->input->post("side"); 
      $params["charge"] = $this->input->post("charge"); 
      $params["section"] = $this->input->post("section"); 
      $params["animation"] = $file; 
      $params["id"] = $this->input->post("update_politic_hide"); 

      if ($params["section"]=="Presidencia") { 
       $params["section"]=1; 
      } 

      if ($params["section"]=="Senadores") { 
       $params["section"]=2; 
      } 

      if ($params["section"]=="Diputados") { 
       $params["section"]=3; 
      } 
    } 
    else { 
        echo "second"; 
       $config['upload_path'] = "./public/uploads/"; 
       $config['allowed_types'] = "*"; 
       //$config['overwrite'] = "true"; 
       $config['max_size'] = "500000"; 
       $config['max_width'] = "2000"; 
       $config['max_height'] = "2000"; 

       $this->load->library('upload', $config); 
       //$file = "animation"; 

       if (!$this->upload->do_upload("animation")) { 
        $data['uploadError'] = $this->upload->display_errors(); 
        echo $this->upload->display_errors(); 
       } 
      else { 

         $file_info = $this->upload->data(); 
         $params["name"] = $this->input->post("name"); 
         $params["lastname"] = $this->input->post("lastname"); 
         $params["side"] = $this->input->post("side"); 
         $params["charge"] = $this->input->post("charge"); 
         $params["animation"] = $file_info['file_name']; 
         $params["section"] = $this->input->post("section"); 
         $params["id"] = $this->input->post("update_politic_hide"); 

         if ($params["section"]=="Presidencia") { 
          $params["section"]=1; 
         } 

         if ($params["section"]=="Senadores") { 
          $params["section"]=2; 
         } 

         if ($params["section"]=="Diputados") { 
          $params["section"]=3; 
         } 

      } 
     } 

     $this->politic->update($params); 
    } 
} 

МОДЕЛЬ

public function update($param){ 

    $id = $param["id"]; 
    $values = array(

        "POLITIC_NAME" => $param["name"], 
        "POLITIC_LASTNAME" => $param["lastname"], 
        "POLITIC_SIDE" => $param["side"], 
        "POLITIC_CHARGE" => $param["charge"], 
        "POLITIC_FILE" => $param["animation"], 
        "SECTION_ID" => $param["section"], 
        ); 

    $this->db->where("POLITIC_ID",$id); 
    $this->db->update("politics",$values); 

} 

JAVASCRIPT

$("#update_politic_btn").click(function(event) { 
    /* Act on the event */ 

    var chango = $("#update_form").serialize(); 
    $.post(baseurl + 'admin/update_politic', chango, 
     function(data) { 
      console.log(data); 
      list_politic(); 
     }); 
    event.preventDefault(); 
}); 


function update_politic(id, name, lastname, section, side, charge, file) { 

    $("#update_politic_hdn").val(id); 
    $("#update_name").val(name); 
    $("#update_last_name").val(lastname); 
    $("#update_side").val(side); 
    $("#update_charge").val(charge); 
    $('[name=section]').val(section); 
    $("#animation").val(file); 

    $('select').material_select(); 

} 

Answer 1

Существует два атрибута атрибута, имеющих одинаковое значение animation.

<input type="file" name="animation"> 

и

<input class="file-path validate" id="animation" name="animation" type="text"> 

Второй name атрибут перекрывая первый. Вам нужно дать ему другое имя.

Answer 2

Изменить код Ajax:

$("#update_politic_btn").click(function(event) { 
var chango = new FormData($("#update_form")[0]); 
// try this if above one not work 
//var chango = new FormData($("#update_form")); 
$.ajax({ 
    url: baseurl + 'admin/update_politic', 
    type: 'POST', 
    data: chango, 
    async: false, 
    success: function (data) { 
     console.log(data); 
     list_politic(); 
    }, 
    cache: false, 
    contentType: false, 
    processData: false, 
    error : function() { 

    } 
}); 
event.preventDefault(); 
});