updated for truffle 4

Author: Thomas Wiesner

README.md

@@ -11,90 +11,28 @@ The scope of the Code is to show what you can achieve in Solidity, Ethereum, Web
 * Listen and react to specific events
 * Write Test Cases
 * Deploy the DApp
-* Work with MIST
+* Work with Remix
+* Work with MetaMask
 * Work with Truffle and WebPack
 
 ## Install Instructions
 
-Developing for Ethereum is sometimes frustrating, because things change at fast pace. If something does not work as described here, please:
+### Geth
+Download geth for your platform from https://geth.ethereum.org/downloads/
 
-### Update October 2017
-On all platforms it should be easier to install truffle now. The truffle team has put together a package that doesn't need compilation:
-```
-npm install -g truffle
-npm install -g ethereumjs-testrpc
-```
-
-All code should be updated to the Solidity Version 0.4.15 and works with Truffle 3.4.11.
-
-### Update End
-
-### General
-
-1. try a google search as you are 100% not alone with your problem
-2. inform the instructors of the course so they can correct the problem
-3. if you have the time, it would be awesome if you'd make a pull-request here
-
-### Windows
-
-~~1. Download Python:~~
- https://www.python.org/downloads/release/python-2712/
-
-~~2. .Net Packages~~
- https://www.microsoft.com/en-US/download/details.aspx?id=49982
-
- https://www.microsoft.com/en-us/download/details.aspx?id=30653
-
-~~3. SSL~~
- https://slproweb.com/products/Win32OpenSSL.html
-
-~~4. and eventually you also need the Visual Studio, because of the C++ Compiler:~~
- https://www.visualstudio.com/vs/
-
- After downloading the Visual Studio make sure to open one time _a new c++ project_.
-
-5. Install the Git-Bash as it comes with a mingw:
- https://git-scm.com/downloads
-
-6. Install NodeJS and the Node Package Manager (NPM)
- https://nodejs.org/en/download/
+#### Geth Mac-OS:
+Copy the "geth" file within the download zip into the following folder:
 
-7. Install Truffle and TestRPC
- npm install -g truffle
- npm install -g ethereumjs-testrpc
+"/usr/local/bin"
 
-### Ubuntu
+### Truffle
+Install NodeJS first: https://nodejs.org/en/
 
-~~1. Install necessary packages:~~
-```
-sudo apt-get update && sudo apt-get upgrade
-sudo apt-get install curl git vim build-essential
-```
-
-2. Install NodeJS and NPM
-```
- curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
- sudo apt-get install -y nodejs
- sudo npm install -g express
-```
-
-3. Install Truffle and TestRPC
- npm install -g truffle
- npm install -g ethereumjs-testrpc
-### Mac
-
-1. Install node
-https://nodejs.org/en/download/
-
-~~2. Install a c++ compiler which typically comes with xCode.~~
-
-3. Install truffle from the command line **as root/systems administrator**
+Then in the Terminal/PowerShell install Truffle:
 ```
 npm install -g truffle
-npm install -g ethereumjs-testrpc
 ```
 
-
 ## Known Issues
 
 ### Fatal: Error starting protocol stack: listen udp :30303: bind: address already in use
@@ -110,72 +48,5 @@ For MIST:
 /Applications/Mist.app/Contents/MacOS/Mist --rpc <path to chaindata>/geth.ipc
 ```
 
-### Error when running truffle test/migrate
-
-If something like this pops up:
-```
-dependency_path = source.resolve_dependency_path(import_path, dependency_path);
-```
-
-or
-
-```
-/usr/lib/node_modules/truffle/node_modules/truffle-compile/profiler.js:120
-        if (ancestors.length > 0) {
-                     ^
-
-TypeError: Cannot read property 'length' of undefined
-    at walk_from (/usr/lib/node_modules/truffle/node_modules/truffle-compile/profiler.js:120:22)
-
-```
-
-then try to install truffle 3.1.9:
-
-```
-npm install -g [email protected]
-```
-
-### Error when installing truffle
-
-Something like
-
- `... receive errors including "MSBUILD : error MSB3428: Could not load the Visual C++ component "VCBuild.exe".`
-
-or
-
-`... node_modules\truffle\node_modules\sha3\build\sha3.vcxproj(20,3): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.".  `
-
-When you have installed Visual Studio, make sure you have opened a c++ project once.
-
-Then try `npm config set msvs_version 2015 --global` and in addition you can try to install the ms-build tools:
-```
-npm install --global --production windows-build-tools
-```
-
-### Geth Attach
-
-
-On Windows its simply possible to do a `geth attach`, but on MacOS it seems that you need to provide the actual ipc file. `geth --datadir /media/user/sdcard/chaindata --ipcpath $HOME/.ethereum/geth.ipc console` which is a problem posed here: http://ethereum.stackexchange.com/questions/4472/port-30303-error-in-mist-when-i-run-geth-with-a-different-datadir
-
-
-### Private Network
-The way the private network is initialized changed in the past months and seems to keep changing. For better information on it, it is advised to directly see the correct instructions on:
-https://github.com/ethereum/go-ethereum
-
-_Usually_ it should work with:
-```
-geth init path/to/genesis.json --datadir=/path/to/some/folder
-```
-
-
-### Solidity Compilation Errors/Warnings
-Solidity is in active maintenance and things change _all the time_! The code throughout the course was written for the current version (at the time this Readme was written) 0.4.8.
-
-Any Solidity Program can be "forced" to use another compiler version (older one) by using as _first line in your program_
-`pragma solidity ^0.4.0;` for version 0.4.0, change it to whatever version you might need.
-
-The code here is updated to work with solidity 0.4.15.
-
-
 ## Contact
 If you run into any problems, don't hesitate to contact us on the course-forum at any time. If you use the forum-search function, there is a high chance that you find the answer to your problem already.

s08/l02/index.html

@@ -13,7 +13,9 @@
         }
 
         function getBalance() {
-            document.getElementById("myBalance").innerText = web3.fromWei(web3.eth.getBalance(web3.eth.accounts[0]), "ether");
+            web3.eth.getBalance(web3.eth.accounts[0], function(error, balance) {
+                document.getElementById("myBalance").innerText = web3.fromWei(balance, "ether");
+            });
         }
     </script>
 </head>

s11/frontend/app/javascripts/app.js

@@ -124,9 +124,9 @@ window.addEventListener('load', function() {
     // Use Mist/MetaMask's provider
     window.web3 = new Web3(web3.currentProvider);
   } else {
-    console.warn("No web3 detected. Falling back to http://localhost:8545. You should remove this fallback when you deploy live, as it's inherently insecure. Consider switching to Metamask for development. More info here: http://truffleframework.com/tutorials/truffle-and-metamask");
+    console.warn("No web3 detected. Falling back to http://localhost:9545. You should remove this fallback when you deploy live, as it's inherently insecure. Consider switching to Metamask for development. More info here: http://truffleframework.com/tutorials/truffle-and-metamask");
     // fallback - use your fallback strategy (local node / hosted node + in-dapp id mgmt / fail)
-    window.web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
+    window.web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:9545"));
   }
 
   App.start();

s11/frontend/truffle.js

@@ -3,7 +3,7 @@ require('babel-register')
 
 module.exports = {
   networks: {
-    development: {
+    mynetwork: {
       host: 'localhost',
       port: 8545,
       network_id: '*' // Match any network id