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QUESTION
I've tried creating the below implicit so that I can GET/read data from the postgreSQL database. I've tried add in the recommended implicits but they turn grey and seem to be unused.
...ANSWER
Answered 2020-Sep-04 at 14:40Older versions of Scala provided .leftMap
to Either
(because this is what Circe Result aliases to), which might have been mentioned in the source that you used.
However, newer versions cleaned up API a bit to they used .left
and .right
to aggregate many of the methods. So .leftMap
became .left.map
, but you have also .left.flatMap
etc, so that you can use Either
easily not only in use cases that align with Either being Right-biased.
So long story short - replace .leftMap
with .left.map
in never versions of Scala.
QUESTION
I am working on a basic job-board app for practice and when trying to compile my Scala code I am getting the following error.
...ANSWER
Answered 2020-Aug-07 at 09:59In your case, Doobie doesn't know how to serialize JobPostDetails
into JSON column on your Postgres database.
By default, Doobie doesn't know how to change case class into JSON. Arguably the most popular library for serializing JSON in scala is circe. You'd have to add additional dependencies in your build.sbt
for circe and circe-Postgres-doobie integration.
QUESTION
I've seached a lot and haven't found a solution for this issue.
When calling my resource controller create method, I'm always getting 403.
Other policies that work: view, update, delete
On the model policy:
...ANSWER
Answered 2020-May-12 at 09:45i think the problem is in this line:
QUESTION
possibly a little out my depth here, I've read the heroku docs thoroughly and still don't quite understand how the Procfile should be set up. Trying to deploy heroku ($ heroku open
), gives this error log:
ANSWER
Answered 2020-Jan-27 at 12:10try updating your Procfile to read as:
QUESTION
I've scraped many sites in the past using the requests library and the methodology I use here but for some reason, this site keeps returning a 500 error despite the fact I can access information in the browser.
Here is a link to progressive's job board for all of their IT openings: https://progressive.taleo.net/careersection/2/jobsearch.ftl?lang=en#
here is my code:
...ANSWER
Answered 2019-Dec-22 at 00:46It looks like you need to set he time zone
header:
QUESTION
I wrote a web page crawler that successfully crawls a web page and grabs the data of one job posting using puppeteer
. I'm now trying to get all the elements on the page with the class of .opportunity
and then pass it into a function that will get the data for that specific job posting. However the list of getElementsByClassName
is returning an empty object?
ANSWER
Answered 2019-Sep-09 at 15:34In the argument of document.getElementsByClassName('.opportunity')
, you have the CSS selector '.opportunity'
.
The getElementsByClassName method takes a name of a class as an argument, not a CSS selector.
Most likely it should be corrected to document.getElementsByClassName('opportunity')
.
QUESTION
I'm new to Async functions and even node.js. I'm trying to crawl a website and grab some data from it. When crawling the website my code randomly throws an ugly error:
...ANSWER
Answered 2019-Sep-09 at 14:25The error is visible on your first line:
Error: Evaluation failed: TypeError: Cannot read property 'innerText' of null
either document.querySelector('.opportunity .row .col-lg-20 h3 a')
returns null
or document.querySelector('.opportunity .hidden-xs.paragraph')
returns null
QUESTION
I am trying to crawl an external job posting board and grab the data for each job posting. Right now I'm just trying to collect the data for the first job posting in the list of job posting. I cant seem to get it to stop erroring on me saying:
UnhandledPromiseRejectionWarning: Error: Evaluation failed: TypeError: Cannot read property 'textContent' of null
I havent used puppeteer much so i may just have a simple syntax issue im not seeing.The address on the data I'm trying to crawl: Canvas Job Postings
...ANSWER
Answered 2019-Sep-09 at 14:39Problem
The expression document.querySelector('.opportunity .row .col-lg-20 h3 a')
returns null
, meaning that the selector does not find any elements.
Most likely, this is the case, because although the load
event has been triggered, the page is not done yet building.
Solution
The simplest way to solve this, is to wait for the element to appear, before continuing your script. You can use page.waitForSelector
for this like this:
QUESTION
When I try and delete records within Django Admin, for some records, I am getting
'bool' object is not callable
I cannot work out where the error is based on this Traceback.
...ANSWER
Answered 2019-Sep-04 at 08:52You have set an on_delete
of a ForeignKey
, or OneToOneField
to a boolean (True
or False
). So something like:
QUESTION
the basic Django CheckboxSelectMultiple
widget allows for a label
and value
to be passed through to the template. I want to add 2 additional fields from a model but I cannot work out how, although I believe it is through subclassing get_context
I have this model and I would like to include the icon
and description
in the widget
ANSWER
Answered 2019-Jun-29 at 12:22This might not be the best solution, but it works.
I subclass create_option
like so:
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