migration

问题 I'm using sequelize-cli for migrations and have researched different scenarios but there doesn't seem to be a definite solid answer as to how to self join. I want to have a join table called friendships which joins users and friends (which are essentially just users). More specifically trying to gain an understanding about the difference between "through" and "as" in this situation. 1) This is my friendship table. Getting tripped up on the second association. I have created two columns, one

问题 I've been trying to figure this out all day without any luck... This is the error that I'm getting when I try to migrate an app after using the "makemigrations" command. self._related_fields = self.resolve_related_fields() File "/home/cg/webdev/rivos/local/lib/python2.7/site-packages/django-django-834d78f/django/db/models/fields/related.py", line 1386, in resolve_rel ated_fields raise ValueError('Related model %r cannot be resolved' % self.rel.to) ValueError: Related model 'checkout_mgr

问题 After upgrading to Rails 5.0 from 4.2 I am getting the following error: rails db:migrate == 20160703164716 AddDeviseToUsers: migrating ================================= -- change_table(:users) rails aborted! StandardError: An error has occurred, this and all later migrations canceled: PG::DuplicateColumn: ERROR: column "email" of relation "users" already exists : ALTER TABLE "users" ADD "email" character varying DEFAULT '' NOT NULL /Users/my_username/.rvm/gems/ruby-2.3.0/gems/activerecord-5.0

问题 I've created a new application with ASP.NET MVC5, using Individual User Accounts for security and Code-First Migrations for the Models/Database modeling. All options are default. I want to setup custom Users and Roles to it, so i created a Seed using RoleManager and UserManager just to populate the Database. It works fine, create 3 Users, 3 Roles and set each User's Role correctly. I can log in to the application correctly. The problem is that i can't execute any Identity method using the

问题 I've created a new application with ASP.NET MVC5, using Individual User Accounts for security and Code-First Migrations for the Models/Database modeling. All options are default. I want to setup custom Users and Roles to it, so i created a Seed using RoleManager and UserManager just to populate the Database. It works fine, create 3 Users, 3 Roles and set each User's Role correctly. I can log in to the application correctly. The problem is that i can't execute any Identity method using the

问题 I am having the most frustrating issue with VQmod. I moved my OpenCart store from a Godaddy VPS to Rackspace's Cloud Sites. The move went fine and everything works properly except the VQmod's on the admin panel. None of them load. No errors in the log files, no admin cache files in the cache dir, no php errors. Things I have tried: Cleared all cache Changed admin folder to 755 reinstalled VQmod tried both manually and using the installer with fresh index.php files Removed all XML files and

问题 I added a new migration to rename an old column. Everything seems correct in this code, for me: public function up() { Schema::table('reports', function (Blueprint $table) { $table->renameColumn('reporter_id', 'created_by'); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::table('reports', function (Blueprint $table) { $table->renameColumn('created_by', 'reporter_id'); }); } But then I faced an error: In Connection.php line 664: SQLSTATE[0A000]: Feature

问题 Scenario: I have received auto generated project in ASP.NET CORE from my colleague. There is auto-generated code for Account/Manage service. This code includes ApplicationUser Class, DBContext and migration folder with 00000000000000_CreateIdentitySchema.cs and 20180323155805_Snapshot.cs. I have been trying to change my User class to have integer id. To do that I added generic to IdentityUser: public class ApplicationUser : IdentityUser**<int>** { } I also had to create ApplicationRole class,

问题 I've created Payment package for my laravel project I want to make migration files inside migrations folder of my package. How can create it using artisan command? I want something like php artisan make:migration packages/Payment/src/Database/add_orderId_to_cart_payment_table 回答1: Use this command on root folder php artisan make:migration create_products_table --create=products //create only Migration file php artisan make:model Product -m //Create Migration, Model file php artisan make:model

问题 I'm trying to implement a datamigration using django 1.7 native migration system. Here is what I've done. # -*- coding: utf-8 -*- from __future__ import unicode_literals from django.db import migrations def create_basic_user_group(apps, schema_editor): """Forward data migration that create the basic_user group """ Group = apps.get_model('auth', 'Group') Permission = apps.get_model('auth', 'Permission') group = Group(name='basic_user') group.save() perm_codenames = ( 'add_stuff', '...', ) # we