Question

我需要模型查询的帮助，我想找到带有变量的字段，该字段是我输入到控制器中的，而现在的问题是该字段无法读取我的变量，因此这是代码

控制器

public function tampil_soal(){
        $kode_soal = $this->input->post('kode_soal');
        $where = array('kode_soal' => $kode_soal);
        $data['tampilan']= $this->m_model->tampil_soal($kode_soal)->result();
        $this->load->view('soal_tampil',$data);
    }

模型

public function tampil_soal($where){
        return $this->db->query("select * from soal where kode_soal='$where' ORDER BY RAND()");
    }

查看

<form action="<?php echo base_url()?>siswa/tampil_soal" method="post" class="form">
    <input class="input" name="kode_ujian" placeholder="Kode ujian"/>
  <input class="button" type="submit" name="submit" value="Selesai"/>
</form>

Answer 1

只需尝试：

//controller
public function tampil_soal(){
    $kode_soal = $this->input->post('kode_ujian');
    $data['tampilan']= $this->m_model->tampil_soal($kode_soal);
    $this->load->view('soal_tampil',$data);
}


// model
public function tampil_soal($where){
    $this->db->where('kode_soal',$where);
    return $this->db->get('soal')->result();
    // use the return $this->db->get('soal')->row();
    // if your query return one record
}

Answer 2

我认为您必须在查询中使用result（）函数

Module3

Answer 3

尝试以下查询： //控制器

public function tampil_soal(){
        $data['tampilan']= $this->m_model->tampil_soal($this->input->post('kode_soal');
        $this->load->view('soal_tampil',$data);
    }

//型号

public function tampil_soal($where){
      return $this->db->where('kode_soal',$where)->get('soal')->result();
    }

Answer 4

查看

<form action="<?php echo base_url()?>siswa/tampil_soal" method="post" class="form">
    <input class="input" name="kode_ujian" placeholder="Kode ujian"/>
  <input class="button" type="submit" name="submit" value="Selesai"/>
</form>

控制器

您使用了错误的帖子名称“ $ this-> input-> post（'kode_soal'）”，将其更改为$ this-> input-> post（'kode_ujian'）然后

public function tampil_soal(){
        $kode_soal = $this->input->post('kode_ujian');
        $where = array('kode_soal' => $kode_soal);
        $data['tampilan']= $this->m_model->tampil_soal($kode_soal);
        $this->load->view('test',$data);
    }

模型

public function tampil_soal($where){
    $qry = $this->db->query("select * from soal where kode_soal='$where' ORDER BY RAND()");
        if($qry->num_rows()>0){
            return $qry->result();
        }else{
            return array();
        }
    }

Answer 5

模型

if ([[url absoluteString] hasPrefix:kCDVAssetsLibraryPrefixes]) {
    ALAssetsLibraryAssetForURLResultBlock resultBlock = ^(ALAsset* asset) {
        if (asset) {
            ALAssetRepresentation* assetRepresentation = [asset defaultRepresentation];
            NSString* MIMEType = (__bridge_transfer NSString*)UTTypeCopyPreferredTagWithClass((__bridge CFStringRef)[assetRepresentation UTI], kUTTagClassMIMEType);
            Byte* buffer = (Byte*)malloc((unsigned long)[assetRepresentation size]);
            NSUInteger bufferSize = [assetRepresentation getBytes:buffer fromOffset:0.0 length:(NSUInteger)[assetRepresentation size] error:nil];
            NSData* data = [NSData dataWithBytesNoCopy:buffer length:bufferSize freeWhenDone:YES];
            [self sendResponseWithResponseCode:200 data:data mimeType:MIMEType];
        }

Answer 6

更改此

public function tampil_soal($where){
        return $this->db->query("select * from soal where kode_soal='$where' ORDER BY RAND()");
    }

对此

public function tampil_soal($kode_soal){
        return $this->db->query("select * from soal where kode_soal='$kode_soal' ORDER BY RAND()");
    }

希望这会有所帮助

Codeigniter-具有变量的mysql查询

6 个答案: