Connect HTML page with Elasticsearch using Python flask
Question
I am new to web development. I am trying to create a web page which will display index from elastic search database. I am using python flask for backend. I see html page and python console shows index. But I am not able to fetch index from HTML page.
I am not sure what could be the issue
Python code is as follows:
from flask import Flask,render_template, request
from elasticsearch import Elasticsearch
app = Flask(__name__)
es = Elasticsearch([{'host': 'localhost', 'port': 9200}])
doc1 = {"food": "Japanese", "spice_level": "moderate"}
doc2 = {"food": "Italian", "spice_level": "mild"}
doc3 = {"food": "Indian", "spice_level": "spicy"}
es.index(index="food", doc_type="spice_level", id=1, body=doc2)
resp = es.get(index="food", doc_type="spice_level", id=1)
print(resp)
@app.route('/')
def home():
return render_template('index.html')
app.route('/dashboard', methods=['GET', 'POST'])
if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000)
HTML code is as follows:
<!DOCTYPE html>
<BODY bgcolor="cyan">
<form method="GET" action="/dashboard">
<center>
<H1>Database UI </H1> <br>
search here <input type = "text" name= "index" /> <br>
<input type = "submit">
</center>
</form>
</BODY>
</html>
Whenever I type a index name and click on search button, page gives me error as :
The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.
I cannot see any other error then this, and it's really difficult to debug with less information about error.
2 answers
solution1
1 ACCPTED 2019-05-17 09:47:10
why your
/dashboardreturn 404 ?because lack of view function to response.
app.route('/dashboard', methods=['GET', 'POST'])is invalid.How to access
/dashboardof elascticsearch ?In your case, the simplest way is modify the index.html
<!DOCTYPE html>
<BODY bgcolor="cyan">
<form method="POST" action="http://localhost:9200/dashboard">
<center>
<H1>Database UI </H1> <br>
search here <input type = "text" name= "index" /> <br>
<input type = "submit">
</center>
</form>
</BODY>
</html>
solution2
0 2019-05-17 10:55:36
can you use this here? for Parse data from html to python code you need to have POST inside @app.route like this:
@app.route("/", methods=['GET', 'POST'])
def home():
return render_template('index.html')
if you want to pase data into index.html you can use this here:
somedata = "variable string"
render_template('index.html', somedata=somedata)
inside index.html do {{ somedata }}
<!DOCTYPE html>
<BODY bgcolor="cyan">
<form method="POST" action="">
<center>
<H1>Database UI </H1> <br>
<!-- it will show (variable string) -->
{{ somedata }}
search here <input type = "text" name= "index" /> <br>
<input type = "submit">
</center>
</form>
</BODY>
</html>
happy codeing.
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