Ruby on rails ID display is not correct < H2 > I tried to recreate the table on the terminal, but the ID showed 4, and I was advised to use each_with_index, but I didn t know where to put it. < H2 > related codes < div class= "container " > < d...
A rookie. After installing lightGBM with pip, there is a problem with the reference (the system is High Sierra) In [3]: import lightgbm --------------------------------------------------------------------------- OSError ...
-- binary= usr bin firefox -- port=4444 http: 127.0.0.1:4444 session < H1 > < Net::HTTPInternalServerError:0x00000001865438 > < H1 > var lib gems 2.3.0 gems selenium-webdriver-3.13.0 lib selenium webdriver remote response.rb:69:in `assert_ok : P...
because the back end uses ajax to interact with the front end, it becomes necessary for the back end to write interface documentation. I used to use word to write interface documents, but recently I worked with colleagues to write the back-end, word is ...
compass create xxxx command the resulting project directory does not have "images " and "javascripts " folders, only "stylesheets ", "sass " and config.rb ...
Today, I was working on a machine learning project and encountered a small problem. I want to extract a column of data using the regular expression and then run it and find that there is no name1 data. This symbol is very puzzling for the Great God s ...
when I first got in touch with ruby, I saw that my colleague had this code when I was in review today: provider = campaign_type == :entry ? Settings.pay_method_to_provider[pay_method] : self.auth_provider it s hard to understand at first glance. wh...
mac vue-cli initialization failed. Here is the error. $vue init webpack pro Unknown command init. vue-cli Failed to download repo vuejs-templates [object Object]: Response code 404 (Not Found) I used npm cnpm brew and tried the same error on one...
for example, there is a form like this: <input type="text" name="user[name]" value="bob"> is parsed into the following format in rails params { user: { name: "bob" } } so there are two questions I ...
this is a comment page of a school curriculum grading system. I want to do this: 1. Count the number of words in each comment 2. When the whole loop is over, count out the total number of words of all comments < div id= "header " > < H1 > Course R...
can homebrew only install the latest version of the software? where is the source of the software, homebrew s own server? what s the difference between downloading and installing the root itself from the official website? ...
I m not familiar with the git command. I used vscode s git management tool to "undo the last commit " twice, but now I don t want to undo those commits. How can I restore them? ...
it s always the fault of this red area. I m new here. I don t know to ask for help. Thank you ....
Please observe the following code: < a> refinement : Because refinement activation should be as static as possible. ...
Environment: rails webpacker: vue + vuex + vue-router + iview problem: change the state value through mutation, and through the vue browser debugging tool, you can see that mutation triggers normally, but the variable for computed to get the correspond...
recently in the study of elk, need to embed ruby code, but also hope to understand ruby to help, explain, thank you! just explain what each of the following two parts represents. xx "xxx" do end xx("xxx&q...
recently read railstutorial . the model generated through rails g model User name:string email:string has gradually become the following virtues with the tutorials: class User < ApplicationRecord before_save { self.email = email.downcase } v...
I have a form form in a pop-up box to add content to the page. Click the cancel button to empty the contents of the form itself. Using this.$refs [ addServiceForm ] .invalid Fields () does not work. Console comes out console.log (this.$refs [ addSer...
There is a function in the component, which hides the weight selection box when the checkbox "title only " is selected through v-show, and displays the weight selection box when the checkbox "title + body " is selected adds the variable isWeight, to ...
the requirement is to implement compressed upload. Most of them are realized by canvas method on the Internet, so I wrote one after it. But it doesn t seem to work. After uploading, the downloaded picture is still very large. the code is as follows ...
The range is: u0000-u0040 is mainly used for regularization. I want to see if this range is full of punctuation ...
as the title in fact, there are two major problems that need to be solved: 1. Extract the data into store and monitor the data. You can use Object.defineProperties or Proxy 2. You need to notify the component to update if the data chang...