Supporting code for my applying blockchain to healthcare blog post on ethereum for events and filters
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Setup a private ethereum network from here: https://github.com/chafey/ethereum-private-network
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Metamask with supported browser (Chrome is what I use)
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Meteor
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Make sure your ethereum private test network is running.
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Create an ethereum account in metamask using the coinbase private key (web3.eth.accounts[0]) in the private ethereum network: 0xf059416a2f6bb05d0770bbacb24a6430757aa7db5c15959838ed142b486df5b8
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Make sure you are using the coinbase account in metamask and connected to the localhost 8545 network. Metamask should show a large quantity of ether.
Start the meteor application:
cd app
meteor
Open your web browser to localhost:3000
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Press "Create" to create a new patient smart contract instance. After a few seconds, geth will mine the transaction and the UI will update showing controls to modify the patient smart contract and a history of changes. Go ahead and make some changes by entering values for name, dob and gender and pressing the corresponding "save" buttons. Pressing save will update that property in the patient smart contract. It may take several seconds for the updates to apply (remember that ethereum has 15 second block times). Press the "Update" button to update the table of updates. You will notice the block number is displayed, the time stamp and the values of the properties at that point in time.
You can also attach to an existing patient smart contract instance by entering its address and pressing "Attach". Once attached, the controls will be shown with the current values and history for the attached instance.