Create Otree project with demo games && Add application mini_ultimatum

.gitignore

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+venv
+staticfiles
+./db.sqlite3
+.idea
+*~
+*.sqlite3
+_static_root
+_bots*s
+__temp*
+__pycache__/
+*.py[cod]
+.DS_Store
+merge.ps1
+*.otreezip

LICENSE

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+Copyright (c) 2014 Daniel Li Chen, Martin Walter Schonger, Christopher Wickens.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+The Licensee undertakes to mention the name oTree, the names of the licensors
+(Daniel L. Chen, Martin Schonger and Christopher Wickens) and to cite the
+following article in all publications in which results of experiments conducted
+with the Software are  published: Chen, Daniel L., Martin Schonger, and Chris Wickens.
+2016. "oTree - An open-source platform for laboratory, online, and field experiments."
+Journal of Behavioral and Experimental Finance, vol 9: 88-97.

Procfile

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+web: otree prodserver1of2
+worker: otree prodserver2of2

_rooms/econ101.txt

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+Alice
+Bob
+Charlie

_templates/global/Page.html

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+{{ extends "otree/Page.html" }}
+{{ load otree }}
+
+{{ block global_styles  }}
+{{ endblock }}
+{{ block global_scripts  }}
+{{ endblock }}

bargaining/Introduction.html

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+{{ block title }}Introduction{{ endblock }}
+{{ block content }}
+    {{ include_sibling 'instructions.html' }}
+    {{ next_button }}
+{{ endblock }}

bargaining/Request.html

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+{{ block title }}Request{{ endblock }}
+{{ block content }}
+
+    <p>How much will you demand for yourself?</p>
+
+    {{ formfields }}
+
+    <p>{{ next_button }}</p>
+
+    {{ include_sibling 'instructions.html' }}
+
+{{ endblock }}

bargaining/Results.html

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+{{ block title }}Results{{ endblock }}
+{{ block content }}
+    <table class=table style="width: auto">
+        <tr>
+            <th>You demanded</th>
+            <td>{{ player.request }}</td>
+        </tr>
+        <tr>
+            <th>The other participant demanded</th>
+            <td>{{ other_player_request }}</td>
+        </tr>
+        <tr>
+            <th>Sum of your demands</th>
+            <td>{{ group.total_requests }}</td>
+        </tr>
+        <tr>
+            <th>Thus you earn</th>
+            <td>{{ player.payoff }}</td>
+        </tr>
+    </table>
+
+    <p>{{ next_button }}</p>
+
+    {{ include_sibling 'instructions.html' }}
+
+{{ endblock }}

bargaining/__init__.py

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+from otree.api import *
+
+
+
+
+doc = """
+This bargaining game involves 2 players. Each demands for a portion of some
+available amount. If the sum of demands is no larger than the available
+amount, both players get demanded portions. Otherwise, both get nothing.
+"""
+
+
+class C(BaseConstants):
+    NAME_IN_URL = 'bargaining'
+    PLAYERS_PER_GROUP = 2
+    NUM_ROUNDS = 1
+    AMOUNT_SHARED = cu(100)
+
+
+class Subsession(BaseSubsession):
+    pass
+
+
+class Group(BaseGroup):
+    total_requests = models.CurrencyField()
+
+
+class Player(BasePlayer):
+    request = models.CurrencyField(
+        doc="""
+        Amount requested by this player.
+        """,
+        min=0,
+        max=C.AMOUNT_SHARED,
+        label="Please enter an amount from 0 to 100",
+    )
+
+
+# FUNCTIONS
+def set_payoffs(group: Group):
+    players = group.get_players()
+    group.total_requests = sum([p.request for p in players])
+    if group.total_requests <= C.AMOUNT_SHARED:
+        for p in players:
+            p.payoff = p.request
+    else:
+        for p in players:
+            p.payoff = cu(0)
+
+
+def other_player(player: Player):
+    return player.get_others_in_group()[0]
+
+
+# PAGES
+class Introduction(Page):
+    pass
+
+
+class Request(Page):
+    form_model = 'player'
+    form_fields = ['request']
+
+
+class ResultsWaitPage(WaitPage):
+    after_all_players_arrive = set_payoffs
+
+
+class Results(Page):
+    @staticmethod
+    def vars_for_template(player: Player):
+        return dict(other_player_request=other_player(player).request)
+
+
+page_sequence = [Introduction, Request, ResultsWaitPage, Results]

bargaining/instructions.html

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+
+<div class="card bg-light m-3">
+
+    <div class="card-body">
+        <h3>
+            Instructions
+        </h3>
+
+        <p>
+            You have been randomly and anonymously paired with another participant.
+            There is {{ C.AMOUNT_SHARED }} for you to divide.
+            Both of you have to simultaneously and independently demand a portion
+            of the {{ C.AMOUNT_SHARED }} for yourselves. If the sum of your
+            demands is smaller or equal to {{ C.AMOUNT_SHARED }}, both of
+            you get what you demanded. If the sum of your demands is larger
+            than {{ C.AMOUNT_SHARED }},
+            both of you get nothing.
+        </p>
+    </div>
+</div>

bertrand/Decide.html

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+{{ block title }}Set Your Price{{ endblock }}
+{{ block content }}
+
+    {{ formfields }}
+
+
+    <p>{{ next_button }}</p>
+
+    {{ include_sibling 'instructions.html' }}
+
+{{ endblock }}

bertrand/Introduction.html

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+{{ block title }}Introduction{{ endblock }}
+{{ block content }}
+    {{ include_sibling 'instructions.html' }}
+    {{ next_button }}
+{{ endblock }}

bertrand/Results.html

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+{{ block title }}Results{{ endblock }}
+{{ block content }}
+    <table class="table">
+        <tr>
+            <th>Your price</th>
+            <td>{{ player.price }}</td>
+        </tr>
+        <tr>
+            <th>Lowest price</th>
+            <td>{{ group.winning_price }}</td>
+        </tr>
+        <tr>
+            <th>Was your product sold?</th>
+            <td>{{ if player.is_winner }} Yes {{ else }} No {{ endif }}</td>
+        </tr>
+        <tr>
+            <th>Your payoff</th>
+            <td>{{ player.payoff }}</td>
+        </tr>
+    </table>
+
+    {{ next_button }}
+
+    {{ include_sibling 'instructions.html' }}
+
+{{ endblock }}

bertrand/__init__.py

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+from otree.api import *
+
+
+
+doc = """
+2 firms complete in a market by setting prices for homogenous goods.
+See "Kruse, J. B., Rassenti, S., Reynolds, S. S., & Smith, V. L. (1994).
+Bertrand-Edgeworth competition in experimental markets.
+Econometrica: Journal of the Econometric Society, 343-371."
+"""
+
+
+class C(BaseConstants):
+    PLAYERS_PER_GROUP = 2
+    NAME_IN_URL = 'bertrand'
+    NUM_ROUNDS = 1
+    MAXIMUM_PRICE = cu(100)
+
+
+class Subsession(BaseSubsession):
+    pass
+
+
+class Group(BaseGroup):
+    winning_price = models.CurrencyField()
+
+
+class Player(BasePlayer):
+    price = models.CurrencyField(
+        min=0,
+        max=C.MAXIMUM_PRICE,
+        doc="""Price player offers to sell product for""",
+        label="Please enter an amount from 0 to 100 as your price",
+    )
+    is_winner = models.BooleanField()
+
+
+# FUNCTIONS
+def set_payoffs(group: Group):
+    import random
+
+    players = group.get_players()
+    group.winning_price = min([p.price for p in players])
+    winners = [p for p in players if p.price == group.winning_price]
+    winner = random.choice(winners)
+    for p in players:
+        if p == winner:
+            p.is_winner = True
+            p.payoff = p.price
+        else:
+            p.is_winner = False
+            p.payoff = cu(0)
+
+
+# PAGES
+class Introduction(Page):
+    pass
+
+
+class Decide(Page):
+    form_model = 'player'
+    form_fields = ['price']
+
+
+class ResultsWaitPage(WaitPage):
+    after_all_players_arrive = set_payoffs
+
+
+class Results(Page):
+    pass
+
+
+page_sequence = [Introduction, Decide, ResultsWaitPage, Results]

bertrand/instructions.html

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+
+<div class="instructions well well-lg" style="">
+
+    <h3>
+        Instructions
+    </h3>
+    <p>
+        You have been randomly and anonymously paired with another participant.
+        Each of you will represent a firm. Each firm manufactures one unit of
+        the same product at no cost.
+    </p>
+    <p>
+        Each of you privately sets your price, anything from 0 to {{ C.MAXIMUM_PRICE }}.
+        The buyer in the market will always buy one unit of the product at the
+        lower price. In case of a tie, the buyer will buy from one of you at
+        random. Your profit is your price if your product is sold and zero
+        otherwise.
+    </p>
+</div>

common_value_auction/Bid.html

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+{{ block title }}Bid{{ endblock }}
+{{ block content }}
+
+    <p>
+        The value of the item is estimated to be {{ player.item_value_estimate }}.
+        This estimate may deviate from the actual value by at most {{ C.BID_NOISE }}.
+    </p>
+
+    <p>
+        Please make your bid now. The amount can be between {{ C.BID_MIN }} and {{ C.BID_MAX }}, inclusive.
+    </p>
+
+    {{ formfields }}
+
+    {{ next_button }}
+
+    {{ include_sibling 'instructions.html' }}
+
+{{ endblock }}

common_value_auction/Introduction.html

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+{{ block title }}Introduction{{ endblock }}
+{{ block content }}
+
+    {{ include_sibling 'instructions.html' }}
+
+    {{ next_button }}
+
+{{ endblock }}