destroy

Destroying a Postgres DB on Heroku

雨燕双飞 提交于 2019-11-27 17:17:20
I want to destroy the database but I'm not sure what the command would be. Does anyone know how to do this? CraigKerstiens You shouldn't use a postgres command to fully delete your database, as you will not have permissions to create a new one. Instead you should use the heroku command to clear out your database: heroku pg:reset DATABASE_URL None of the answers above actually describe how to destroy a Heroku database, which was the original question (and what led me here seeking an answer). From their docs , either of these will work: heroku addons:destroy heroku-postgresql:tier (where tier is

Remove duplicate records based on multiple columns?

戏子无情 提交于 2019-11-27 17:04:36
I'm using Heroku to host my Ruby on Rails application and for one reason or another, I may have some duplicate rows. Is there a way to delete duplicate records based on 2 or more criteria but keep just 1 record of that duplicate collection? In my use case, I have a Make and Model relationship for cars in my database. Make Model --- --- Name Name Year Trim MakeId I'd like to delete all Model records that have the same Name, Year and Trim but keep 1 of those records (meaning, I need the record but only once). I'm using Heroku console so I can run some active record queries easily. Any

has_many through association dependent destroy under condition of who called destroy

不打扰是莪最后的温柔 提交于 2019-11-27 15:14:42
问题 Is there a way to check, within a before_destroy hook, what object (class) called destroy ? In the following example, when a patient is destroyed, so are their appointments (which is what I want); however I don't want to allow a physician to be destroyed if there are any appointments associated with that physician . Again, is there a way to do such a check in the before_destory callback? If not, is there any other way to accomplish this "destruction check" based on the "direction" of the call

Rails - How To Destroy Users Created Under Devise?

北城以北 提交于 2019-11-27 14:46:35
问题 For my application, I have user accounts that people can sign up. I use the devise gem for the setup. I also have a users page that lists out all the users registered to the site along with a destroy link. I want my administrator to be able to delete users and have it redirected to this users listing page. But when I click the link to destroy a specific user, it just redirects to the user profile page and does not delete the user from the database. Does somebody know why? **UPDATE: Updated

Tkinter example code for multiple windows, why won't buttons load correctly?

╄→尐↘猪︶ㄣ 提交于 2019-11-27 11:03:00
I am writing a program which should: Open a window with the press of a button. Close the newly opened window with the press of another button. I'm using classes so I can insert the code into a larger program later. However, I can't get my buttons to load correctly. import tkinter as tk class Demo1(tk.Frame): def __init__(self): tk.Frame.__init__(self) self.pack() self.master.title("Demo 1") self.button1 = tk.Button(self, text = "Button 1", width = 25, command = self.new_window) self.button1.grid(row = 0, column = 1, columnspan = 2, sticky = tk.W+tk.E+tk.N+tk.S) def new_window(self): self

How to destroy a JavaScript object?

杀马特。学长 韩版系。学妹 提交于 2019-11-27 09:56:07
问题 Recently, I came across one of my application which consumes too much memory and increasing by 10 MB/sec. So, I like to know the best way to destroy JavaScript object and variables so memory consumption stay down and my FF can't get destroyed. I am calling two of my JavaScript in every 8 sec interval without reloading the page. function refresh() { $('#table_info').remove(); $('#table').hide(); if (refreshTimer) { clearTimeout(refreshTimer); refreshTimer = null ; } document.getElementById(

Destroying a specific session in Code Igniter

拟墨画扇 提交于 2019-11-27 09:09:47
问题 Staff Note: This question and the associated answers are locked to prevent off topic discussion surrounding a current event that is related to the question at hand. Questions about this event can be found on our meta site. Thank you! I want to be able to log users out of my app built in Code Igniter. I know how to end an active local session: $this->session->sess_destroy(); But how can I destroy a session that was started on another computer and thereby log a user out of their session? I

How to destroy the php session with one button

岁酱吖の 提交于 2019-11-27 08:11:09
问题 I'd like to make a simple form button which completely destroys the session when you click on it. I am just starting to use PHP for the first time, and do not see how I implement it into my HTML code. What I'd like is simply a form button which will clear the session (and possibly an explanation as to how it works) 回答1: The form button is just like any other form button, nothing special. Catch the POST on the php side of things, and use session_destroy(); to kill the session data entirely.

Delete / Destroy is not working in rails 3 with jQuery

纵然是瞬间 提交于 2019-11-27 05:53:02
问题 My delete/destroy is not working for Rails 3. Not for any scaffold or even for new projects. <%= link_to 'Destroy', card, :confirm => 'Are you sure?', :method => :delete %> From this question. Solution is Firefox reinstalation. But mine is also not working in chrome, safari or opera. Html code generated:-- <a href="/categories/1" data-confirm="Are you sure?" data-method="delete" rel="nofollow">Destroy</a> PS: Please don't say include default JS files or something. Because I am not interested

Why does super.onDestroy() in java Android goes on top in destructors? [duplicate]

巧了我就是萌 提交于 2019-11-27 04:17:41
问题 This question already has an answer here: What is the correct order of calling superclass methods in onPause, onStop and onDestroy methods? and Why? 7 answers According to which logic does super.onDestroy(); in destructors goes on top? For example: protected void onDestroy() { super.onDestroy(); releaseMediaPlayer(); } and not: protected void onDestroy() { releaseMediaPlayer(); super.onDestroy(); } Like in c++, obj-c, pascal, etc? 回答1: It really depends on what you want to do in your