49b5ecfc76
* Add Ethereum Tooling Guides * Apply suggestions from code review * fix tabs * review comments addressed and some cleanup Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
66 lines
2.7 KiB
Markdown
66 lines
2.7 KiB
Markdown
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# Remix: Deploying a Smart Contract
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Learn how to deploy a simple Solidity-based smart contract to Ethermint using the Remix in-browser IDE {synopsis}
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## Pre-requisite Readings
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- [Installation](./../../quickstart/installation.md) {prereq}
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- [Run a node](./../../quickstart/run_node.md) {prereq}
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- [MetaMask](../keys-wallets/metamask.md) {prereq}
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[Remix](http://remix.ethereum.org/) is an in-browser IDE for [Solidity](https://github.com/ethereum/solidity) smart contracts. In this guide, we will learn how to deploy a contract to a running Ethermint network through Remix and interact with it.
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## Connect Ethermint account to Remix
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::: tip
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If you haven’t already, follow the steps in the [Metamask guide](.//metamask.md) to import your Ethermint private key into Metamask. Start the Ethermint daemon and REST server.
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:::
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Go to [Remix](http://remix.ethereum.org/). There are some contracts in the File Explorer. Replace these with the source code to `Counter.sol` below. On the left-most bar, select the Solidity Compiler and compile the contract.
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```javascript
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pragma solidity >=0.7.0 <0.9.0;
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contract Counter {
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uint256 counter = 0;
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function add() public {
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counter++;
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}
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function subtract() public {
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counter--;
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}
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function getCounter() public view returns (uint256) {
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return counter;
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}
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}
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```
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Next, select the `Deploy and Run` option. Select `Injected Web3` as the `Environment`. This will open a metamask popup for you to connect your Metamask to Remix. Select `Connect` to confirm.
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You should see your account show up in the left-hand panel.
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## Deploy and Interact
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Now that your account is connected, you are able to deploy the contract. Press the `Deploy` button. A metamask pop-up will appear asking you to confirm. Confirm the transaction. You should see a log for the deployment transaction in the Ethermint daemon logs:
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```bash
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I[2020-07-15|17:26:43.155] Added good transaction module=mempool tx=877A8E6600FA27EC2B2362719274314977B243671DC4E5F8796ED97FFC0CBE42 res="&{CheckTx:log:\"[]\" gas_wanted:121193 }" height=31 total=1
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```
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Once the contract has been successfully deployed, you will see it show up in the `Deployed Contracts` section in the left-hand side, as well as a green check in the Remix console showing the transaction details.
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Now, you are able to interact with the contract through Remix. For `Counter.sol`, click `add`. This will open a Metamask pop-up asking you to confirm. Confirm the transaction. Then, click `getCounter` to get the count, which should be `1`.
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