How to update node node with node.js? - node.js

Question

I cannot update the node in the database with neo4j.the update process does not occur. If the problem is not the question of the code, I could not figure out the writing of the code.
app.post('/Movie/update',function(req, res){
var title = req.body.title;
var title = req.body.title2;
session
.run('MATCH (n:Movie {title:{titleParam}}) SET n.title={titleParam} RETURN n',{titleParam:title, title2Param:title})
.then(function(result){
res.redirect('/');
session.close();
})
.catch(function(err){
console.log(err);
});
res.redirect('/');
});
HTML code:
<form method="POST" action="/movie/update">
<br>
<input type="text" name="title">
<input type="text" name="title2">
<br>
<input type="submit" value="Submit">
</form>

Answer 1

In addition to #jfriesenhahn's answer, your Javascript code is also assigning 2 different values to the same title variable. You should use 2 different variables:
var title = req.body.title;
var title2 = req.body.title2;
session
.run('MATCH (n:Movie {title: $title}}) SET n.title= $title2 RETURN n',
{title: title, title2: title2})
or, more simply:
session
.run('MATCH (n:Movie {title: $title}}) SET n.title= $title2 RETURN n',
{title: req.body.title, title2: req.body.title2})
This answer also uses the now-preferred $foo syntax for parameters (instead of the deprecated {foo} syntax).

Answer 2

So, it may just be a typo on your part, but you are using titleParam twice.
I think they cypher you are looking for is:
MATCH (n:Movie {title:{titleParam}}) SET n.title={title2Param} RETURN n