exports.campagne_add_post = function(req, res, next) {
// Validate fields.
req.assert('name', 'Please fill the name').isLength({ min: 1 }).trim().withMessage('First name must be specified.')
.isAlphanumeric().withMessage('First name has non-alphanumeric characters.');
req.assert('date_debut', 'Invalid date_debut').isISO8601();
req.assert('date_fin', 'Invalid date_fin').isISO8601();
req.assert('agence', 'Please fill agence name').isLength({ min: 1 }).trim().withMessage('Agence must be specified.')
.isAlphanumeric().withMessage('Agence has non-alphanumeric characters.');
req.assert('annonceur', 'Please fill the annonceur name').isLength({ min: 1 }).trim().withMessage('Annonceur name must be specified.')
.isAlphanumeric().withMessage('Annonceur name has non-alphanumeric characters.');
req.assert('groupe_annonceur', 'Please fill groupe annonceur').isLength({ min: 1 }).trim().withMessage('Groupe annonceur must be specified.')
.isAlphanumeric().withMessage('Groupe annonceur has non-alphanumeric characters.');
req.assert('produit', 'Please fill product name').isLength({ min: 1 }).trim().withMessage('Poduct name must be specified.')
.isAlphanumeric().withMessage('Product name has non-alphanumeric characters.');
var errors = req.validationErrors();
console.log(errors);
if (!errors) {
// Sanitize fields (using wildcard).
sanitizeBody('*').trim().escape();
var campagne = new Campagne(
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit
}
);
Campagne.findOne({ 'name': req.body.name })
.exec(function (err, found_name) {
if (err) {
var errors_detail = ("Error Insert : %s ", err);
req.flash('msg_error', errors_detail);
res.render('campagne/add-campagne',
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit,
});
}
if (found_name) {
req.flash('msg_error', 'Campagne with the same name already existe');
res.render('campagne/add-campagne',
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit,
});
}
else {
if(req.body.date_debut > req.body.date_fin){
req.flash('msg_error', 'date_debut must be before date_fin');
res.render('campagne/add-campagne',
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit
});
}else {
console.log(req.body.name +'\n');
console.log(req.body.date_debut +'\n');
console.log(req.body.date_fin +'\n');
console.log(req.body.agence +'\n');
console.log(req.body.annonceur +'\n');
console.log(req.body.produit);
campagne.save(function (err) {
if (err) {
var errors_detail = ("Error Insert : %s ", err);
req.flash('msg_error', errors_detail);
res.render('campagne/add-campage',
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit
});
}
// Genre saved. Redirect to genre detail page.
req.flash('msg_info', 'Create campagne success');
res.redirect('/campagnes');
});
}
}
});
} else {
console.log(errors);
errors_detail = "Sory there are error" + " <ul>" ;
for (i in errors)
{
error = errors[i];
errors_detail += ' <li>'+error.msg+'</li>';
}
errors_detail += "</ul>";
req.flash('msg_error', errors_detail);
res.render('campagne/add-campagne',
{
name: req.body.name,
date_debut: req.body.date_debut,
date_fin: req.body.date_fin,
agence: req.body.agence,
annonceur: req.body.annonceur,
groupe_annonceur: req.body.groupe_annonceur,
produit: req.body.produit,
});
}
};
当我提交表单时，我收到以下消息： 错误：发送后无法设置标头。 在validateHeader（_http_outgoing.js：494：11） 在ServerResponse.setHeader（_http_outgoing.js：501：3）
我发现错误的原因之一是我的控制器中的重定向。 我在mongoose中也有一个$ __ save.error。 如果我能得到somme的帮助，那就太好了。
答案 0 :(得分：1)
因为您在致电res.render时无法返回。这样，您尝试多次发送响应，因此，在发送第一个响应后设置标头。
e.g。
Campagne.findOne({ 'name': req.body.name })
.exec(function (err, found_name) {
if (err) {
var errors_detail = ("Error Insert : %s ", err);
req.flash('msg_error', errors_detail);
// you should return here, because it can go to following condition
return res.render('campagne/add-campagne',{
// some code
});
}
if (found_name) {
req.flash('msg_error', 'Campagne with the same name already existe');
return res.render('campagne/add-campagne', {
// some code
});
}
适用于所有条件。