jquery - Get Ajax PHP response for file upload form -


i've created upload form text fields create custom posts frontend in wordpress.

the requst working, can't response message in ajax when file uploaded. if no file uploaded , text field set response.

here ajax form:

//upload-form.js _submit: function (event) {         event.preventdefault();          this.$submitbutton.prop('disabled', true);          var $formdata = false;         var $form = this.$form;          if (window.formdata) {             $formdata = new formdata();         }         var $files_data = this.$upload;          if ($files_data.val() == '') {             $formdata.append('fields', $form.serialize());         } else {             $.each($($files_data), function (i, obj) {                 $.each(obj.files, function (j, file) {                     $formdata.append('files[' + j + ']', file);                     $formdata.append('fields', $form.serialize());                 })             });         }          $formdata.append('action', 'upload_form_submit');         $formdata.append('nonce', upload.form_nonce);          $.ajax({             url: upload.ajaxurl,             type: 'post',             data: $formdata,             datatype: "json",             async: false,             success: this._success.bind(this),             error: this._error.bind(this),             cache: false,             contenttype: false,             processdata: false         });          return false;     },      _success: function (jsonresponse) {          var response = jsonresponse;          if (response.type == 'success') {              // clear fields             this.$fields.val('');             this.$submitbutton.prop('disabled', true);              // show message             if (response.message) {                 $('.response-success').text(response.message);             }         } else {             this._error(response.message);         }          return jsonresponse;     },      _error: function (error) {          this.$submitbutton.prop('disabled', false);          // show message         if (error) {              if (typeof error === 'object') {                 $('.response-success').text(error.statustext);             } else {                  // custom error                 $('.response-success').text(error);                  this.$form.find('*[required]').each(function (i, elem) {                     var $elem = $(elem);                     if (!$elem.val()) {                         $elem.parent().addclass('empty-field');                     }                 });             }          }     }

my php response

/**  * callback validate ajax request  */ public function ajax_submit_form() {     check_ajax_referer( 'form_submit', 'security' );      if ( !isset( $_post['fields'] ) ) {         return;     }      $json = array();      // parse $.serialize()     parse_str( $_post['fields'], $this->_post_fields );      // check if required fields not empty     if ( $this->is_valid_data() ) {         // save posts         if ( $this->handle_frontend_new_post_form_submission() ) {             $json['type']    = 'success';             $json['message'] = $this->_notices['post_sent'];         } else {             $json['type']    = 'error';             $json['message'] = $this->_notices['post_not_sent'];         }     } else {         $json['type']    = 'error';         $json['message'] = $this->_notices['empty_fields'];     }       die( wp_json_encode( $json ) ); }


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