I am using lodash in one of my projects to achieve filter. My requirement is we have different SELECT options that are generated dynamically. And these are populated with json.
So my filter function that I need should be generic. For example if there are 3 drop downs.
dropdown1. populated with values whose json_property is ABC_CODE="002"
dropdown2. populated with values whose json_property is xyz_CODE="002"
dropdown2 values should change based on dropdown1 selection
I have a masterdata list, which tells this information.
The loadash _.filter function should use varaibles. Because this filter should be used dynamically for different select options.
ex:
var a=_.filter($scope.masterData, function(e){
return _.indexOf(v, e.ABC_CODE) != -1;
});
console.log(a); //returns array of objects
I get the values.
How can I replace ABC_CODE from a javascript variable. like e.tempVar where tempVar is ABC_CODE
use bracket notation
var a = _.filter($scope.masterData, function(e) {
var key = ABC_CODE;
return _.indexOf(v, e[key]) != -1;
});
console.log(a); //returns array of objects
Related
I have got list of objects
listOf(User("John",32), User("Katy",15), User("Sam",43))
How can write a function which returns me the User object if in parameter I pass a name. For example getUser("John") and it suppose to return me User("John",32)
One possibility is also using firstOrNull:
val list = listOf(User("John",32), User("Katy",15), User("Sam",43))
list.firstOrNull { it.name == "John" }
I'm trying to save just a number from a string I get from a paragraph but when I try to asign an alias to it and then check the value it returns undefined. I've tried a few solutions I found but none of those seem to work for me. These are two ways I tried (I tried another one similar to the second one but using split, had same result). The console.log inside of the 'then' doesn't show in the console, and when I try the alias after the code is when I get undefined.
cy.get('p')
.eq(1)
.should('have.text', '/[0-9]+/g')
.as('solNumber')
cy.get('p')
.eq(1)
.invoke('text')
.then((text)=>{
var fullText = text;
var pattern = /[0-9]+/g;
var number = fullText.match(pattern);
console.log(number);
})
.as('solNumber')
Please convert with + operator and return the numeric value if you want numeric type to be stored.
cy.get('p').eq(1)
.invoke('text')
.then(fullText => {
const number = fullText.match(/[0-9]+/);
return +number // text to numeric
})
.as('solNumber')
cy.get('#solNumber')
.should('eq', 42) // numeric type
});
Running your 2nd code on this,
<p>21</p>
<p>42</p>
gives the correct outcome
cy.get('p')
.eq(1)
.invoke('text')
.then((text)=>{
var fullText = text;
var pattern = /[0-9]+/g;
var number = fullText.match(pattern);
console.log(number); // logs 42
})
.as('solNumber')
cy.get('#solNumber')
.should('eq', '42') // passes
So, you need to inspect the DOM, it looks like it's not what you expect.
The first attempt you were passing a jquery element to the .should() and although some chainers change the subject yours did not so it saved the jquery element as solNumber.
The second attempt invokes the .text() which was passed to the .then() it logs the number correctly. However, you did not return anything at the end of the .then() block, therefore, solNumber should hold the entire paragraph.
This should help you out to extract the specific number and save it as an alias.
cy.get('p')
.invoke('text')
.invoke('trim')
.then(paragraph => {
const matcher = /some/
expect(paragraph).to.match(matcher) // check number is there
const indexOfText = paragraph.match(matcher) // get index of match text
return paragraph.substring(indexOfText.index, indexOfText.index + indexOfText[0].length) // return substring
})
.as('savedText')
cy.get('#savedText')
.then(cy.log) // will print out the number you seek
I have a JSON array which has the following entries:
[{"customer":"xyz","date":"10.10.2014","attr1":"ABC","attr2":"001"},{"customer":"xyz","date":"10.10.2014","attr3":"XYZ","attr4":"123"},{"customer":"xyz","date":"11.10.2014","attr1":"DEF","attr2":"002"},{"customer":"xyz","date":"11.10.2014","attr3":"DDD","attr4":"222"}]
Is there a way, using lodash, I can merge the array so that this becomes:
[{"customer":"xyz","date":"10.10.2014","attr1":"ABC","attr2":"001","attr3":"XYZ","attr4":"123"},{"customer":"xyz","date":"11.10.2014","attr1":"DEF","attr2":"002","attr3":"DDD","attr4":"222"}]
Basically use the "date" attribute to merge multiple rows with different JSON attributes into a single JSON object entry ?
Use _.groupBy() to group the objects by date. Then _.merge() each group:
var customers = [{"customer":"xyz","date":"10.10.2014","attr1":"ABC","attr2":"001"},{"customer":"xyz","date":"10.10.2014","attr3":"XYZ","attr4":"123"},{"customer":"xyz","date":"11.10.2014","attr1":"DEF","attr2":"002"},{"customer":"xyz","date":"11.10.2014","attr3":"DDD","attr4":"222"}];
var result = _(customers)
.groupBy('date') // group the objects by date
.map(function(item) { // map each group
return _.merge.apply(_, item); // merge all objects in the group
})
.value();
console.log(result);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.16.4/lodash.js"></script>
Here is a solution using lodash 3.10.1. I assumed you want to merge each pair and that the second element of a pair will override existing properties from the first one (if there are such).
var source = [{"customer":"xyz","date":"10.10.2014","attr1":"ABC","attr2":"001"},{"customer":"xyz","date":"10.10.2014","attr3":"XYZ","attr4":"123"},{"customer":"xyz","date":"11.10.2014","attr1":"DEF","attr2":"002"},{"customer":"xyz","date":"11.10.2014","attr3":"DDD","attr4":"222"}];
var chunked = _.chunk(source, 2);
var result = _.map(chunked, _.spread(_.merge));
console.log(result);
And here is a working jsbin.
I am currently rendering a list of sql rows from a database using:
Sql sql = new Sql(dataSource)
def list = []
def index = 0
params.mrnaIds.each { mrnaName ->
sql.eachRow ("select value from patient_mrna where mrna_id=$mrnaId") { row ->
list[index] = row.value
index++
}
}
render list
However I would like to avoid assigning the values to a list before rendering them.
The variable params.mrnaIds is coming from a multi select input, so it could either be a single string or a string array containing ids. Is there a way to iterate through these ids inside the eachRow method?
I would like to be able to execute something like:
render sql.eachRow ("select value from patient_mrna where mrna_id=?", params.mrnaIds) { row ->
list[index] = row.value
index++
}
But I'm not completely sure that there is a way to call eachRow with this functionality. If there is not, is there some other way to render the results without storing them in a list?
I think you can render each row:
sql.eachRow( someQuery, someParams ){ row ->
render row as JSON
}
There is rows() to return a list instead ok working with it (like eachRow() is used for). It also shares all the different arguments. E.g.:
render sql.rows("select value from patient_mrna where mrna_id=?", params).collect{ it.value }
I'm using node js 0.10.12 to perform querys to postgreSQL 9.1.
I get the error error invalid input synatx for integer: "{39}" (39 is an example number) when I try to perform an update query
I cannot see what is going wrong. Any advise?
Here is my code (snippets) in the front-end
//this is global
var gid=0;
//set websockets to search - works fine
var sd = new WebSocket("ws://localhost:0000");
sd.onmessage = function (evt)
{
//get data, parse it, because there is more than one vars, pass id to gid
var received_msg = evt.data;
var packet = JSON.parse(received_msg);
var tid = packet['tid'];
gid=tid;
}
//when user clicks button, set websockets to send id and other data, to perform update query
var sa = new WebSocket("ws://localhost:0000");
sa.onopen = function(){
sa.send(JSON.stringify({
command:'typesave',
indi:gid,
name:document.getElementById("typename").value,
}));
sa.onmessage = function (evt) {
alert("Saved");
sa.close;
gid=0;//make gid 0 again, for re-use
}
And the back -end (query)
var query=client.query("UPDATE type SET t_name=$1,t_color=$2 WHERE t_id = $3 ",[name, color, indi])
query.on("row", function (row, result) {
result.addRow(row);
});
query.on("end", function (result) {
connection.send("o");
client.end();
});
Why this not work and the number does not get recognized?
Thanks in advance
As one would expect from the initial problem, your database driver is sending in an integer array of one member into a field for an integer. PostgreSQL rightly rejects the data and return an error. '{39}' in PostgreSQL terms is exactly equivalent to ARRAY[39] using an array constructor and [39] in JSON.
Now, obviously you can just change your query call to pull the first item out of the JSON array. and send that instead of the whole array, but I would be worried about what happens if things change and you get multiple values. You may want to look at separating that logic out for this data structure.