Long story short, I'm trying to develop an iOS app using React-Native for the front-end and MySQL for the back.
After installing the mysql module and install rn-nodeify, I wastold that I'm missing module A. After installing module A and reloading, I am missing B. After B, then C, etc etc etc. After getting past the modules, I get this error:
undefined is not an object (evaluating RNRandomBytes.seed)
Then, I installed RNPM and ran "rnpm link. Now, my app will not build and shows this error.
Am I doing something that is just fundamentally wrong, or is it this much of a pain to install the mysql module?
This also happened to me when I tried PostgreSQL.
Am I doing something that is just fundamentally wrong, or is it this much of a pain to install the mysql module? (This also happened to me when I tried PostgreSQL)
Maybe. React Native should be though of as purely client code. Similarly to how you would separate your web code from backend code.
The MySQL node module is designed to run in Node. Node is separate environment. Generally you can use one package.json file and one node_modules directory for both your server side and client code. As long as your careful not to import server code, i.e. code designed to run in node, into your client code.
Sometimes you run into versioning problems and it's best to have a separate directory with separate package.json file for the server code.
If I still don't understand your setup. Please update your question to include your directory structure, where you're calling the mysql module, and how you are running that script.
So it looks like I was doing something very fundamentally wrong. I was completely missing the middleman that is a backend server (lol). I have set up an Express server to interact with the database and have gotten it working.
Related
I'm trying to figure out how to properly setup an ejabberd project that allows for easy compilation of custom beam files- so far, we've been using an existing project that is cumbersome to manage, and uses erlide as the IDE.
I would like to set up the project in a way that I can use a more helpful IDE like vscode, and somehow streamline the compiling and copying of the beam files and updating the module on the server.
Writing code in Elixir is fine as well- I just want the project to be set up in a way that is dev friendly.
Apologies if the question is too broad, but I'm not exactly sure how else to best phrase it. If you feel like I'm missing something in my current flow, please let me know, as I've basically inherited this project. If there are any clarifications required, let me know as well.
Thanks.
easy compilation of custom beam files
somehow streamline the compiling and copying of the beam files and updating the module on the server.
If the task is about compiling and loading additional modules, a running ejabberd node can compile, load and start additional modules in runtime, see
https://docs.ejabberd.im/developer/extending-ejabberd/modules/#ejabberd-contrib
Usually the modules come from
https://github.com/processone/ejabberd-contrib
but you can tell ejabberd to download other modules from other git repositories, or you can copy modules source code and tell ejabberd to install them. And those modules can be written in Erlang or Elixir. Full example: https://docs.ejabberd.im/developer/extending-ejabberd/elixir/#elixir-module-in-ejabberd-contrib
Basically:
you write the module in your development machine, test it...
when happy with the source code, copy mod_whatever.erl to the production machine, $HOME/.ejabberd-modules/sources/mod_whatever as explained in the example mentioned earlier
run ejabberdctl module_install mod_whatever
In step 2, instead of copying the source code yourself, you can have a git repository just for your module, tell ejabberd the module's git URL, similarly to https://github.com/processone/ejabberd-contrib/tree/master/extra
BTW, for step 3, starting in ejabberd 22.10, there's a page in ejabberd webadmin to install and uninstall those modules (copying the files requires manual administration of course).
I would like to set up the project in a way that I can use a more helpful IDE like vscode
What a coincidence, these days I'm playing with VSCode variants (VSCode, VSCodium, Coder's code-server and Github Codespaces) and how to develop ejabberd using them. This is useful for step 1 that I mentioned earlier (write module and test it). If you are interested in ejabberd + VSCode, tell me.
I am new to Erlang, I have been trying to install Erlang and ejabberd on EC2 ubuntu machine, everything went well till I started compiling some external modules in ejabberd. It started throwing error undefined parse transform 'lager_transform'.
I tried everything which is as below:
Did rebar get-deps, make clean, make deps, make install. After this I am able to see that lager_transform.beam is made and present in /lib/ folder.
Checked rebar.config file, it had lager deps on top, which is widely suggested, no help even after that.
Added -compile[{parse_tranform},{lager_transform}] on top of module, even then their is no luck.
I am really blocked on this, and not able to complete the installation. I have done this before on fedora with ejabberd 15.11 and otp 18.2, at that time it was using p1_logger instead of lager. But now when I am installing fresh with otp 18.2 and ejabberd 16.0 or 15.11, I am getting lager_transform undefined error.
Please make sure you compile ejabberd as described in documentation: http://docs.ejabberd.im/admin/guide/installation/#installing-ejabberd-from-source-code
For example, you can compile it with:
./configure --enable-lager --enable-mysql
make
You need to run configure and make to set properly the build chain.
I have cloned my office colleague's zend2 project from our server. He used zfcuser, zfcbase, and zfcadmin. But when I tried to run the project in my local machine its giving
<b>Fatal error</b>: Uncaught exception 'Zend\ModuleManager\Exception\RuntimeException'
with message 'Module (ZfcBase) could not be initialized.' in C:\xampp\htdocs\coolshop
\vendor\ZF2\library\Zend\ModuleManager\ModuleManager.php:140
Everything is fine to me as the same project 100% working in my colleague's machine. I tried the composer as well. But no luck
This is a result of loading the ZfcBase module as a git submodule. If you fix this module you'll receive the same error for other modules or dependencies you're using in that manner. I've encountered this problem when someone tries to clone the project on a new machine or you delete the project locally and try to re-clone it.
The simple answer here is to use composer as your dependency manager, you'll have a better day. Head over to ZfcBase on Packagist and copy the require statement into your composer.json file (You'll need to run the composer script after saving your .json file). Most modules should have instructions on using composer to grab them in the README.
I should note that if you're using other modules that depend on ZfcBase, you'll likely just need to have a require statement for those, and not their dependencies (like ZfcBase).
Someone had a similar question regarding the ZfcUser module. Using composer solved his issue.
I am having a problem with the ExecJS in that it is unable to locate a required Runtime. I am using Windows, and I have both Windows CScript and Node.js installed on my computer, but neither of these guys are being invoked.
As a result, I am unable to run any rails task that involves this (I cannot even load my rake list in RubyMine to call actions such as db:create to create my databases from a fresh project.)
I am capable of accessing both csript and node from the command line, and I have checked my environment variables and their proper file locations are in the PATH. There's something else ruining my ability to use ExecJS. Has anyone else had a similar experience where you have had all of the right stuff, but something is still going wrong?
When Ruby spawns child process to invoke CScript or Node, it will use the same rules that allow cmd.exe execute them from the command line.
But, sometimes, stuff in your registry or your environment variables can affect this process.
At RubyInstaller project we collected a series of troubleshooting items that could possible be the culprit.
Please check that COMSPEC environment variable is set to use cmd.exe and nothing like TCC/LE or other stuff.
C:\>SET COMSPEC
Also, check that your registry do not contain an AutoRun key, which will also affect Ruby.
C:\>REG QUERY "HKCU\Software\Microsoft\Command Processor"
C:\>REG QUERY "HKLM\Software\Microsoft\Command Processor"
If you see a key AutoRun in one of the above commands, that means something is setup to automatically execute everytime a new cmd.exe is started, which is bad for some cases.
Please follow the instructions in the Troubleshooting page on how to remove it.
This also affects gem installation that requires compilation, but if is not failing for you then the problem might be something else.
Hope that helps.
I was having similar problems, my basic skeleton app wouldn't run despite having Node.js installed, and then trying therubyracer gem. Finally I decided to use my troubleshooting mantra with windows, "When in doubt, run as admin". So I ran my rails cmd as an admin and it worked fine after that.
I'm working on a symfony project and I need a user access conected to an LDAP server. So I searched for something already done to add to my app and found this plugin that has all I wanted.
So I tried to install with the command $ php symfony plugin:install bhLDAPAuthPlugin
for some reason it throws me this error:
No release avaiable for plugin "bhLDAPAuthPlugin"
I don't really understand what that message means. I've checked the spell of the command (also copied the command given in the page of the plugin) and same error appears. If I had no all requeriments for instalation, other errors would be thrown, right?
PS: If you know some easy way to implement by myself the comunication with LDAP (Microsoft Active Directory) will also be appreciated.
No exactly sure how to solve the error message, perhaps it helps is specifically specify which version you wish to install.
Otherwise there's an easy workaround:
Just download the tgz file from here:
http://www.symfony-project.org/plugins/bhLDAPAuthPlugin/6_0_0
and do
php symfony plugin:install bhLDAPAuthPlugin-etc-etc.tgz